Protocol Analyzers

Contents

Analyzer::Tag

Type:

Type:	`enum` `Analyzer::ANALYZER_AYIYA` `Analyzer::ANALYZER_BACKDOOR` `Analyzer::ANALYZER_BITTORRENT` `Analyzer::ANALYZER_BITTORRENTTRACKER` `Analyzer::ANALYZER_CONNSIZE` `Analyzer::ANALYZER_DCE_RPC` `Analyzer::ANALYZER_DHCP` `Analyzer::ANALYZER_DNP3_TCP` `Analyzer::ANALYZER_DNP3_UDP` `Analyzer::ANALYZER_CONTENTS_DNS` `Analyzer::ANALYZER_DNS` `Analyzer::ANALYZER_FTP_DATA` `Analyzer::ANALYZER_IRC_DATA` `Analyzer::ANALYZER_FINGER` `Analyzer::ANALYZER_FTP` `Analyzer::ANALYZER_FTP_ADAT` `Analyzer::ANALYZER_GNUTELLA` `Analyzer::ANALYZER_GSSAPI` `Analyzer::ANALYZER_GTPV1` `Analyzer::ANALYZER_HTTP` `Analyzer::ANALYZER_ICMP` `Analyzer::ANALYZER_IDENT` `Analyzer::ANALYZER_IMAP` `Analyzer::ANALYZER_INTERCONN` `Analyzer::ANALYZER_IRC` `Analyzer::ANALYZER_KRB` `Analyzer::ANALYZER_KRB_TCP` `Analyzer::ANALYZER_CONTENTS_RLOGIN` `Analyzer::ANALYZER_CONTENTS_RSH` `Analyzer::ANALYZER_LOGIN` `Analyzer::ANALYZER_NVT` `Analyzer::ANALYZER_RLOGIN` `Analyzer::ANALYZER_RSH` `Analyzer::ANALYZER_TELNET` `Analyzer::ANALYZER_MODBUS` `Analyzer::ANALYZER_MYSQL` `Analyzer::ANALYZER_CONTENTS_NCP` `Analyzer::ANALYZER_NCP` `Analyzer::ANALYZER_CONTENTS_NETBIOSSSN` `Analyzer::ANALYZER_NETBIOSSSN` `Analyzer::ANALYZER_NTLM` `Analyzer::ANALYZER_NTP` `Analyzer::ANALYZER_PIA_TCP` `Analyzer::ANALYZER_PIA_UDP` `Analyzer::ANALYZER_POP3` `Analyzer::ANALYZER_RADIUS` `Analyzer::ANALYZER_RDP` `Analyzer::ANALYZER_RFB` `Analyzer::ANALYZER_CONTENTS_NFS` `Analyzer::ANALYZER_CONTENTS_RPC` `Analyzer::ANALYZER_NFS` `Analyzer::ANALYZER_PORTMAPPER` `Analyzer::ANALYZER_SIP` `Analyzer::ANALYZER_CONTENTS_SMB` `Analyzer::ANALYZER_SMB` `Analyzer::ANALYZER_SMTP` `Analyzer::ANALYZER_SNMP` `Analyzer::ANALYZER_SOCKS` `Analyzer::ANALYZER_SSH` `Analyzer::ANALYZER_DTLS` `Analyzer::ANALYZER_SSL` `Analyzer::ANALYZER_STEPPINGSTONE` `Analyzer::ANALYZER_SYSLOG` `Analyzer::ANALYZER_CONTENTLINE` `Analyzer::ANALYZER_CONTENTS` `Analyzer::ANALYZER_TCP` `Analyzer::ANALYZER_TCPSTATS` `Analyzer::ANALYZER_TEREDO` `Analyzer::ANALYZER_UDP` `Analyzer::ANALYZER_XMPP` `Analyzer::ANALYZER_ZIP`

enum

Analyzer::ANALYZER_AYIYA

Analyzer::ANALYZER_BACKDOOR

Analyzer::ANALYZER_BITTORRENT

Analyzer::ANALYZER_BITTORRENTTRACKER

Analyzer::ANALYZER_CONNSIZE

Analyzer::ANALYZER_DCE_RPC

Analyzer::ANALYZER_DHCP

Analyzer::ANALYZER_DNP3_TCP

Analyzer::ANALYZER_DNP3_UDP

Analyzer::ANALYZER_CONTENTS_DNS

Analyzer::ANALYZER_DNS

Analyzer::ANALYZER_FTP_DATA

Analyzer::ANALYZER_IRC_DATA

Analyzer::ANALYZER_FINGER

Analyzer::ANALYZER_FTP

Analyzer::ANALYZER_FTP_ADAT

Analyzer::ANALYZER_GNUTELLA

Analyzer::ANALYZER_GSSAPI

Analyzer::ANALYZER_GTPV1

Analyzer::ANALYZER_HTTP

Analyzer::ANALYZER_ICMP

Analyzer::ANALYZER_IDENT

Analyzer::ANALYZER_IMAP

Analyzer::ANALYZER_INTERCONN

Analyzer::ANALYZER_IRC

Analyzer::ANALYZER_KRB

Analyzer::ANALYZER_KRB_TCP

Analyzer::ANALYZER_CONTENTS_RLOGIN

Analyzer::ANALYZER_CONTENTS_RSH

Analyzer::ANALYZER_LOGIN

Analyzer::ANALYZER_NVT

Analyzer::ANALYZER_RLOGIN

Analyzer::ANALYZER_RSH

Analyzer::ANALYZER_TELNET

Analyzer::ANALYZER_MODBUS

Analyzer::ANALYZER_MYSQL

Analyzer::ANALYZER_CONTENTS_NCP

Analyzer::ANALYZER_NCP

Analyzer::ANALYZER_CONTENTS_NETBIOSSSN

Analyzer::ANALYZER_NETBIOSSSN

Analyzer::ANALYZER_NTLM

Analyzer::ANALYZER_NTP

Analyzer::ANALYZER_PIA_TCP

Analyzer::ANALYZER_PIA_UDP

Analyzer::ANALYZER_POP3

Analyzer::ANALYZER_RADIUS

Analyzer::ANALYZER_RDP

Analyzer::ANALYZER_RFB

Analyzer::ANALYZER_CONTENTS_NFS

Analyzer::ANALYZER_CONTENTS_RPC

Analyzer::ANALYZER_NFS

Analyzer::ANALYZER_PORTMAPPER

Analyzer::ANALYZER_SIP

Analyzer::ANALYZER_CONTENTS_SMB

Analyzer::ANALYZER_SMB

Analyzer::ANALYZER_SMTP

Analyzer::ANALYZER_SNMP

Analyzer::ANALYZER_SOCKS

Analyzer::ANALYZER_SSH

Analyzer::ANALYZER_DTLS

Analyzer::ANALYZER_SSL

Analyzer::ANALYZER_STEPPINGSTONE

Analyzer::ANALYZER_SYSLOG

Analyzer::ANALYZER_CONTENTLINE

Analyzer::ANALYZER_CONTENTS

Analyzer::ANALYZER_TCP

Analyzer::ANALYZER_TCPSTATS

Analyzer::ANALYZER_TEREDO

Analyzer::ANALYZER_UDP

Analyzer::ANALYZER_XMPP

Analyzer::ANALYZER_ZIP

Bro::ARP

ARP Parsing

Components

Events

arp_request

Type:	`event` (mac_src: `string`, mac_dst: `string`, SPA: `addr`, SHA: `string`, TPA: `addr`, THA: `string`)

Generated for ARP requests.

See Wikipedia for more information about the ARP protocol.

Mac_src:	The request’s source MAC address.
Mac_dst:	The request’s destination MAC address.
SPA:	The sender protocol address.
SHA:	The sender hardware address.
TPA:	The target protocol address.
THA:	The target hardware address.

Mac_src:	The reply’s source MAC address.
Mac_dst:	The reply’s destination MAC address.
SPA:	The sender protocol address.
SHA:	The sender hardware address.
TPA:	The target protocol address.
THA:	The target hardware address.

Type:	`event` (SPA: `addr`, SHA: `string`, TPA: `addr`, THA: `string`, explanation: `string`)

SPA:	The sender protocol address.
SHA:	The sender hardware address.
TPA:	The target protocol address.
THA:	The target hardware address.
Explanation:	A short description of why the ARP packet is considered “bad”.

Bro::AYIYA

AYIYA Analyzer

Components

Analyzer::ANALYZER_AYIYA

Type:	`event` (c: `connection`, os: `backdoor_endp_stats`, rs: `backdoor_endp_stats`)

Type:	`event` (c: `connection`, is_orig: `bool`, len: `count`)

Type:	`event` (c: `connection`, is_orig: `bool`, num_null: `count`, len: `count`)

Bro::BitTorrent

BitTorrent Analyzer

Components

Analyzer::ANALYZER_BITTORRENT

Analyzer::ANALYZER_BITTORRENTTRACKER

Events

bittorrent_peer_handshake

Type:	`event` (c: `connection`, is_orig: `bool`, reserved: `string`, info_hash: `string`, peer_id: `string`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_keep_alive

Type:	`event` (c: `connection`, is_orig: `bool`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_choke

Type:	`event` (c: `connection`, is_orig: `bool`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_unchoke

Type:	`event` (c: `connection`, is_orig: `bool`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_interested

Type:	`event` (c: `connection`, is_orig: `bool`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_not_interested

Type:	`event` (c: `connection`, is_orig: `bool`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_have

Type:	`event` (c: `connection`, is_orig: `bool`, piece_index: `count`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_bitfield

Type:	`event` (c: `connection`, is_orig: `bool`, bitfield: `string`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_request

Type:	`event` (c: `connection`, is_orig: `bool`, index: `count`, begin: `count`, length: `count`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_piece

Type:	`event` (c: `connection`, is_orig: `bool`, index: `count`, begin: `count`, piece_length: `count`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_cancel

Type:	`event` (c: `connection`, is_orig: `bool`, index: `count`, begin: `count`, length: `count`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_port

Type:	`event` (c: `connection`, is_orig: `bool`, listen_port: `port`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_unknown

Type:	`event` (c: `connection`, is_orig: `bool`, message_id: `count`, data: `string`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bittorrent_peer_weird

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bt_tracker_request

Type:	`event` (c: `connection`, uri: `string`, headers: `bt_tracker_headers`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bt_tracker_response

Type:	`event` (c: `connection`, status: `count`, headers: `bt_tracker_headers`, peers: `bittorrent_peer_set`, benc: `bittorrent_benc_dir`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bt_tracker_response_not_ok

Type:	`event` (c: `connection`, status: `count`, headers: `bt_tracker_headers`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

bt_tracker_weird

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`)

TODO.

See Wikipedia for more information about the BitTorrent protocol.

Bro::ConnSize

Connection size analyzer

Components

Analyzer::ANALYZER_CONNSIZE

Events

conn_bytes_threshold_crossed

Type:	`event` (c: `connection`, threshold: `count`, is_orig: `bool`)

Generated for a connection that crossed a set byte threshold. Note that this is a low level event that should usually be avoided for user code. Use ConnThreshold::bytes_threshold_crossed instead.

C:	the connection
Threshold:	the threshold that was set
Is_orig:	true if the threshold was crossed by the originator of the connection

conn_packets_threshold_crossed

Type:	`event` (c: `connection`, threshold: `count`, is_orig: `bool`)

Generated for a connection that crossed a set packet threshold. Note that this is a low level event that should usually be avoided for user code. Use ConnThreshold::bytes_threshold_crossed instead.

C:	the connection
Threshold:	the threshold that was set
Is_orig:	true if the threshold was crossed by the originator of the connection

Functions

set_current_conn_bytes_threshold

Type:	`function` (cid: `conn_id`, threshold: `count`, is_orig: `bool`) : `bool`

Sets the current byte threshold for connection sizes, overwriting any potential old threshold. Be aware that in nearly any case you will want to use the high level API instead (ConnThreshold::set_bytes_threshold).

Cid:	The connection id.
Threshold:	Threshold in bytes.
Is_orig:	If true, threshold is set for bytes from originator, otherwhise for bytes from responder.

set_current_conn_packets_threshold

Type:	`function` (cid: `conn_id`, threshold: `count`, is_orig: `bool`) : `bool`

Sets a threshold for connection packets, overwtiting any potential old thresholds. Be aware that in nearly any case you will want to use the high level API instead (ConnThreshold::set_packets_threshold).

Cid:	The connection id.
Threshold:	Threshold in packets.
Is_orig:	If true, threshold is set for packets from originator, otherwhise for packets from responder.

get_current_conn_bytes_threshold

Type:	`function` (cid: `conn_id`, is_orig: `bool`) : `count`

Gets the current byte threshold size for a connection.

Cid:	The connection id.
Is_orig:	If true, threshold of originator, otherwhise threshold of responder.
Returns:	0 if no threshold is set or the threshold in bytes

get_current_conn_packets_threshold

Type:	`function` (cid: `conn_id`, is_orig: `bool`) : `count`

Gets the current packet threshold size for a connection.

Cid:	The connection id.
Is_orig:	If true, threshold of originator, otherwhise threshold of responder.
Returns:	0 if no threshold is set or the threshold in packets

Bro::DCE_RPC

DCE-RPC analyzer

Components

Analyzer::ANALYZER_DCE_RPC

Options/Constants

DCE_RPC::max_cmd_reassembly

Type:	`count`
Attributes:	`&redef`
Default:	`20`

The maximum number of simultaneous fragmented commands that the DCE_RPC analyzer will tolerate before the it will generate a weird and skip further input.

DCE_RPC::max_frag_data

Type:	`count`
Attributes:	`&redef`
Default:	`30000`

The maximum number of fragmented bytes that the DCE_RPC analyzer will tolerate on a command before the analyzer will generate a weird and skip further input.

Types

DCE_RPC::PType

Type:

enum

DCE_RPC::REQUEST

DCE_RPC::PING

DCE_RPC::RESPONSE

DCE_RPC::FAULT

DCE_RPC::WORKING

DCE_RPC::NOCALL

DCE_RPC::REJECT

DCE_RPC::ACK

DCE_RPC::CL_CANCEL

DCE_RPC::FACK

DCE_RPC::CANCEL_ACK

DCE_RPC::BIND

DCE_RPC::BIND_ACK

DCE_RPC::BIND_NAK

DCE_RPC::ALTER_CONTEXT

DCE_RPC::ALTER_CONTEXT_RESP

DCE_RPC::SHUTDOWN

DCE_RPC::CO_CANCEL

DCE_RPC::ORPHANED

DCE_RPC::IfID

Type:

enum

DCE_RPC::unknown_if

DCE_RPC::epmapper

DCE_RPC::lsarpc

DCE_RPC::lsa_ds

DCE_RPC::mgmt

DCE_RPC::netlogon

DCE_RPC::samr

DCE_RPC::srvsvc

DCE_RPC::spoolss

DCE_RPC::drs

DCE_RPC::winspipe

DCE_RPC::wkssvc

DCE_RPC::oxid

DCE_RPC::ISCMActivator

Events

dce_rpc_message

Type:	`event` (c: `connection`, is_orig: `bool`, fid: `count`, ptype_id: `count`, ptype: `DCE_RPC::PType`)

Generated for every DCE-RPC message.

C:	The connection.
Is_orig:	True if the message was sent by the originator of the TCP connection.
Fid:	File ID of the PIPE that carried the DCE-RPC message. Zero will be used if the DCE-RPC was not transported over a pipe.
Ptype_id:	Numeric representation of the procedure type of the message.
Ptype:	Enum representation of the prodecure type of the message.

dce_rpc_bind

Type:	`event` (c: `connection`, fid: `count`, uuid: `string`, ver_major: `count`, ver_minor: `count`)

Generated for every DCE-RPC bind request message. Since RPC offers the ability for a client to request connections to multiple endpoints, this event can occur multiple times for a single RPC message.

C:	The connection.
Fid:	File ID of the PIPE that carried the DCE-RPC message. Zero will be used if the DCE-RPC was not transported over a pipe.
Uuid:	The string interpretted uuid of the endpoint being requested.
Ver_major:	The major version of the endpoint being requested.
Ver_minor:	The minor version of the endpoint being requested.

dce_rpc_bind_ack

Type:	`event` (c: `connection`, fid: `count`, sec_addr: `string`)

Generated for every DCE-RPC bind request ack message.

C:	The connection.
Fid:	File ID of the PIPE that carried the DCE-RPC message. Zero will be used if the DCE-RPC was not transported over a pipe.
Sec_addr:	Secondary address for the ack.

dce_rpc_request

Type:	`event` (c: `connection`, fid: `count`, opnum: `count`, stub_len: `count`)

Generated for every DCE-RPC request message.

C:	The connection.
Fid:	File ID of the PIPE that carried the DCE-RPC message. Zero will be used if the DCE-RPC was not transported over a pipe.
Opnum:	Number of the RPC operation.
Stub_len:	Length of the data for the request.

dce_rpc_response

Type:	`event` (c: `connection`, fid: `count`, opnum: `count`, stub_len: `count`)

Generated for every DCE-RPC response message.

C:	The connection.
Fid:	File ID of the PIPE that carried the DCE-RPC message. Zero will be used if the DCE-RPC was not transported over a pipe.
Opnum:	Number of the RPC operation.
Stub_len:	Length of the data for the response.

Bro::DHCP

DHCP analyzer

Components

Analyzer::ANALYZER_DHCP

Events

dhcp_discover

Type:	`event` (c: `connection`, msg: `dhcp_msg`, req_addr: `addr`, host_name: `string`)

Generated for DHCP messages of type DHCPDISCOVER (client broadcast to locate available servers).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Req_addr:	The specific address requested by the client.
Host_name:	The value of the host name option, if specified by the client.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

dhcp_offer

Type:	`event` (c: `connection`, msg: `dhcp_msg`, mask: `addr`, router: `dhcp_router_list`, lease: `interval`, serv_addr: `addr`, host_name: `string`)

Generated for DHCP messages of type DHCPOFFER (server to client in response to DHCPDISCOVER with offer of configuration parameters).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Mask:	The subnet mask specified by the message.
Router:	The list of routers specified by the message.
Lease:	The least interval specified by the message.
Serv_addr:	The server address specified by the message.
Host_name:	Optional host name value. May differ from the host name requested from the client.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

dhcp_request

Type:	`event` (c: `connection`, msg: `dhcp_msg`, req_addr: `addr`, serv_addr: `addr`, host_name: `string`)

Generated for DHCP messages of type DHCPREQUEST (Client message to servers either (a) requesting offered parameters from one server and implicitly declining offers from all others, (b) confirming correctness of previously allocated address after, e.g., system reboot, or (c) extending the lease on a particular network address.)

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Req_addr:	The client address specified by the message.
Serv_addr:	The server address specified by the message.
Host_name:	The value of the host name option, if specified by the client.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

dhcp_decline

Type:	`event` (c: `connection`, msg: `dhcp_msg`, host_name: `string`)

Generated for DHCP messages of type DHCPDECLINE (Client to server indicating network address is already in use).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Host_name:	Optional host name value.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

dhcp_ack

Type:	`event` (c: `connection`, msg: `dhcp_msg`, mask: `addr`, router: `dhcp_router_list`, lease: `interval`, serv_addr: `addr`, host_name: `string`)

Generated for DHCP messages of type DHCPACK (Server to client with configuration parameters, including committed network address).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Mask:	The subnet mask specified by the message.
Router:	The list of routers specified by the message.
Lease:	The least interval specified by the message.
Serv_addr:	The server address specified by the message.
Host_name:	Optional host name value. May differ from the host name requested from the client.

dhcp_nak

Type:	`event` (c: `connection`, msg: `dhcp_msg`, host_name: `string`)

Generated for DHCP messages of type DHCPNAK (Server to client indicating client’s notion of network address is incorrect (e.g., client has moved to new subnet) or client’s lease has expired).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Host_name:	Optional host name value.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

dhcp_release

Type:	`event` (c: `connection`, msg: `dhcp_msg`, host_name: `string`)

Generated for DHCP messages of type DHCPRELEASE (Client to server relinquishing network address and cancelling remaining lease).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Host_name:	The value of the host name option, if specified by the client.

dhcp_inform

Type:	`event` (c: `connection`, msg: `dhcp_msg`, host_name: `string`)

Generated for DHCP messages of type DHCPINFORM (Client to server, asking only for local configuration parameters; client already has externally configured network address).

C:	The connection record describing the underlying UDP flow.
Msg:	The parsed type-independent part of the DHCP message.
Host_name:	The value of the host name option, if specified by the client.

Note

Bro does not support broadcast packets (as used by the DHCP protocol). It treats broadcast addresses just like any other and associates packets into transport-level flows in the same way as usual.

Bro::DNP3

DNP3 UDP/TCP analyzers

Components

Analyzer::ANALYZER_DNP3_TCP

Analyzer::ANALYZER_DNP3_UDP

Events

dnp3_application_request_header

Type:	`event` (c: `connection`, is_orig: `bool`, application: `count`, fc: `count`)

Generated for a DNP3 request header.

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Fc:	function code.

dnp3_application_response_header

Type:	`event` (c: `connection`, is_orig: `bool`, application: `count`, fc: `count`, iin: `count`)

Generated for a DNP3 response header.

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Fc:	function code.
Iin:	internal indication number.

dnp3_object_header

Type:	`event` (c: `connection`, is_orig: `bool`, obj_type: `count`, qua_field: `count`, number: `count`, rf_low: `count`, rf_high: `count`)

Generated for the object header found in both DNP3 requests and responses.

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Obj_type:	type of object, which is classified based on an 8-bit group number and an 8-bit variation number.
Qua_field:	qualifier field.
Number:	TODO.
Rf_low:	the structure of the range field depends on the qualified field. In some cases, the range field contains only one logic part, e.g., number of objects, so only rf_low contains useful values.
Rf_high:	in some cases, the range field contains two logic parts, e.g., start index and stop index, so rf_low contains the start index while rf_high contains the stop index.

dnp3_object_prefix

Type:	`event` (c: `connection`, is_orig: `bool`, prefix_value: `count`)

Generated for the prefix before a DNP3 object. The structure and the meaning of the prefix are defined by the qualifier field.

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Prefix_value:	The prefix.

dnp3_header_block

Type:	`event` (c: `connection`, is_orig: `bool`, start: `count`, len: `count`, ctrl: `count`, dest_addr: `count`, src_addr: `count`)

Generated for an additional header that the DNP3 analyzer passes to the script-level. This header mimics the DNP3 transport-layer yet is only passed once for each sequence of DNP3 records (which are otherwise reassembled and treated as a single entity).

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Start:	the first two bytes of the DNP3 Pseudo Link Layer; its value is fixed as 0x0564.
Len:	the “length” field in the DNP3 Pseudo Link Layer.
Ctrl:	the “control” field in the DNP3 Pseudo Link Layer.
Dest_addr:	the “destination” field in the DNP3 Pseudo Link Layer.
Src_addr:	the “source” field in the DNP3 Pseudo Link Layer.

dnp3_response_data_object

Type:	`event` (c: `connection`, is_orig: `bool`, data_value: `count`)

Generated for a DNP3 “Response_Data_Object”. The “Response_Data_Object” contains two parts: object prefix and object data. In most cases, object data are defined by new record types. But in a few cases, object data are directly basic types, such as int16, or int8; thus we use an additional data_value to record the values of those object data.

C:	The connection the DNP3 communication is part of.
Is_orig:	True if this reflects originator-side activity.
Data_value:	The value for those objects that carry their information here directly.

dnp3_attribute_common

Type:	`event` (c: `connection`, is_orig: `bool`, data_type_code: `count`, leng: `count`, attribute_obj: `string`)

Generated for DNP3 attributes.

dnp3_crob

Type:	`event` (c: `connection`, is_orig: `bool`, control_code: `count`, count8: `count`, on_time: `count`, off_time: `count`, status_code: `count`)

Generated for DNP3 objects with the group number 12 and variation number 1

CROB:	control relay output block

dnp3_pcb

Type:	`event` (c: `connection`, is_orig: `bool`, control_code: `count`, count8: `count`, on_time: `count`, off_time: `count`, status_code: `count`)

Generated for DNP3 objects with the group number 12 and variation number 2

PCB:	Pattern Control Block

dnp3_counter_32wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`)

Generated for DNP3 objects with the group number 20 and variation number 1 counter 32 bit with flag

dnp3_counter_16wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`)

Generated for DNP3 objects with the group number 20 and variation number 2 counter 16 bit with flag

dnp3_counter_32woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, count_value: `count`)

Generated for DNP3 objects with the group number 20 and variation number 5 counter 32 bit without flag

dnp3_counter_16woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, count_value: `count`)

Generated for DNP3 objects with the group number 20 and variation number 6 counter 16 bit without flag

dnp3_frozen_counter_32wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`)

Generated for DNP3 objects with the group number 21 and variation number 1 frozen counter 32 bit with flag

dnp3_frozen_counter_16wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`)

Generated for DNP3 objects with the group number 21 and variation number 2 frozen counter 16 bit with flag

dnp3_frozen_counter_32wFlagTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 21 and variation number 5 frozen counter 32 bit with flag and time

dnp3_frozen_counter_16wFlagTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, count_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 21 and variation number 6 frozen counter 16 bit with flag and time

dnp3_frozen_counter_32woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, count_value: `count`)

Generated for DNP3 objects with the group number 21 and variation number 9 frozen counter 32 bit without flag

dnp3_frozen_counter_16woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, count_value: `count`)

Generated for DNP3 objects with the group number 21 and variation number 10 frozen counter 16 bit without flag

dnp3_analog_input_32wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 30 and variation number 1 analog input 32 bit with flag

dnp3_analog_input_16wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 30 and variation number 2 analog input 16 bit with flag

dnp3_analog_input_32woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, value: `count`)

Generated for DNP3 objects with the group number 30 and variation number 3 analog input 32 bit without flag

dnp3_analog_input_16woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, value: `count`)

Generated for DNP3 objects with the group number 30 and variation number 4 analog input 16 bit without flag

dnp3_analog_input_SPwFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 30 and variation number 5 analog input single precision, float point with flag

dnp3_analog_input_DPwFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value_low: `count`, value_high: `count`)

Generated for DNP3 objects with the group number 30 and variation number 6 analog input double precision, float point with flag

dnp3_frozen_analog_input_32wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 31 and variation number 1 frozen analog input 32 bit with flag

dnp3_frozen_analog_input_16wFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 31 and variation number 2 frozen analog input 16 bit with flag

dnp3_frozen_analog_input_32wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 31 and variation number 3 frozen analog input 32 bit with time-of-freeze

dnp3_frozen_analog_input_16wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 31 and variation number 4 frozen analog input 16 bit with time-of-freeze

dnp3_frozen_analog_input_32woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, frozen_value: `count`)

Generated for DNP3 objects with the group number 31 and variation number 5 frozen analog input 32 bit without flag

dnp3_frozen_analog_input_16woFlag

Type:	`event` (c: `connection`, is_orig: `bool`, frozen_value: `count`)

Generated for DNP3 objects with the group number 31 and variation number 6 frozen analog input 16 bit without flag

dnp3_frozen_analog_input_SPwFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 31 and variation number 7 frozen analog input single-precision, float point with flag

dnp3_frozen_analog_input_DPwFlag

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value_low: `count`, frozen_value_high: `count`)

Generated for DNP3 objects with the group number 31 and variation number 8 frozen analog input double-precision, float point with flag

dnp3_analog_input_event_32woTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 32 and variation number 1 analog input event 32 bit without time

dnp3_analog_input_event_16woTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 32 and variation number 2 analog input event 16 bit without time

dnp3_analog_input_event_32wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 32 and variation number 3 analog input event 32 bit with time

dnp3_analog_input_event_16wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 32 and variation number 4 analog input event 16 bit with time

dnp3_analog_input_event_SPwoTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`)

Generated for DNP3 objects with the group number 32 and variation number 5 analog input event single-precision float point without time

dnp3_analog_input_event_DPwoTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value_low: `count`, value_high: `count`)

Generated for DNP3 objects with the group number 32 and variation number 6 analog input event double-precision float point without time

dnp3_analog_input_event_SPwTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 32 and variation number 7 analog input event single-precision float point with time

dnp3_analog_input_event_DPwTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, value_low: `count`, value_high: `count`, time48: `count`)

Generated for DNP3 objects with the group number 32 and variation number 8 analog input event double-precisiion float point with time

dnp3_frozen_analog_input_event_32woTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 33 and variation number 1 frozen analog input event 32 bit without time

dnp3_frozen_analog_input_event_16woTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 33 and variation number 2 frozen analog input event 16 bit without time

dnp3_frozen_analog_input_event_32wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 33 and variation number 3 frozen analog input event 32 bit with time

dnp3_frozen_analog_input_event_16wTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 33 and variation number 4 frozen analog input event 16 bit with time

dnp3_frozen_analog_input_event_SPwoTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`)

Generated for DNP3 objects with the group number 33 and variation number 5 frozen analog input event single-precision float point without time

dnp3_frozen_analog_input_event_DPwoTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value_low: `count`, frozen_value_high: `count`)

Generated for DNP3 objects with the group number 33 and variation number 6 frozen analog input event double-precision float point without time

dnp3_frozen_analog_input_event_SPwTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value: `count`, time48: `count`)

Generated for DNP3 objects with the group number 33 and variation number 7 frozen analog input event single-precision float point with time

dnp3_frozen_analog_input_event_DPwTime

Type:	`event` (c: `connection`, is_orig: `bool`, flag: `count`, frozen_value_low: `count`, frozen_value_high: `count`, time48: `count`)

Generated for DNP3 objects with the group number 34 and variation number 8 frozen analog input event double-precision float point with time

dnp3_file_transport

Type:	`event` (c: `connection`, is_orig: `bool`, file_handle: `count`, block_num: `count`, file_data: `string`)

g70

dnp3_debug_byte

Type:	`event` (c: `connection`, is_orig: `bool`, debug: `string`)

Debugging event generated by the DNP3 analyzer. The “Debug_Byte” binpac unit generates this for unknown “cases”. The user can use it to debug the byte string to check what caused the malformed network packets.

Bro::DNS

DNS analyzer

Components

Analyzer::ANALYZER_CONTENTS_DNS

Analyzer::ANALYZER_DNS

Events

dns_message

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `dns_msg`, len: `count`)

Generated for all DNS messages.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Is_orig:	True if the message was sent by the originator of the connection.
Msg:	The parsed DNS message header.
Len:	The length of the message’s raw representation (i.e., the DNS payload).

dns_request

Type:	`event` (c: `connection`, msg: `dns_msg`, query: `string`, qtype: `count`, qclass: `count`)

Generated for DNS requests. For requests with multiple queries, this event is raised once for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Query:	The queried name.
Qtype:	The queried resource record type.
Qclass:	The queried resource record class.

dns_rejected

Type:	`event` (c: `connection`, msg: `dns_msg`, query: `string`, qtype: `count`, qclass: `count`)

Generated for DNS replies that reject a query. This event is raised if a DNS reply indicates failure because it does not pass on any answers to a query. Note that all of the event’s parameters are parsed out of the reply; there’s no stateful correlation with the query.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Query:	The queried name.
Qtype:	The queried resource record type.
Qclass:	The queried resource record class.

dns_query_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, query: `string`, qtype: `count`, qclass: `count`)

Generated for each entry in the Question section of a DNS reply.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Query:	The queried name.
Qtype:	The queried resource record type.
Qclass:	The queried resource record class.

dns_A_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, a: `addr`)

Generated for DNS replies of type A. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
A:	The address returned by the reply.

dns_AAAA_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, a: `addr`)

Generated for DNS replies of type AAAA. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
A:	The address returned by the reply.

dns_A6_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, a: `addr`)

Generated for DNS replies of type A6. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
A:	The address returned by the reply.

dns_NS_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, name: `string`)

Generated for DNS replies of type NS. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Name:	The name returned by the reply.

dns_CNAME_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, name: `string`)

Generated for DNS replies of type CNAME. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Name:	The name returned by the reply.

dns_PTR_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, name: `string`)

Generated for DNS replies of type PTR. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Name:	The name returned by the reply.

dns_SOA_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, soa: `dns_soa`)

Generated for DNS replies of type CNAME. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Soa:	The parsed SOA value.

dns_WKS_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`)

Generated for DNS replies of type WKS. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.

dns_HINFO_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`)

Generated for DNS replies of type HINFO. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.

dns_MX_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, name: `string`, preference: `count`)

Generated for DNS replies of type MX. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Name:	The name returned by the reply.
Preference:	The preference for name specified by the reply.

dns_TXT_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, strs: `string_vec`)

Generated for DNS replies of type TXT. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Strs:	The textual information returned by the reply.

dns_CAA_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, flags: `count`, tag: `string`, value: `string`)

Generated for DNS replies of type CAA (Certification Authority Authorization). For replies with multiple answers, an individual event of the corresponding type is raised for each. See RFC 6844 for more details.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Flags:	The flags byte of the CAA reply.
Tag:	The property identifier of the CAA reply.
Value:	The property value of the CAA reply.

dns_SRV_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`, target: `string`, priority: `count`, weight: `count`, p: `count`)

Generated for DNS replies of type SRV. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.
Target:	Target of the SRV response – the canonical hostname of the machine providing the service, ending in a dot.
Priority:	Priority of the SRV response – the priority of the target host, lower value means more preferred.
Weight:	Weight of the SRV response – a relative weight for records with the same priority, higher value means more preferred.
P:	Port of the SRV response – the TCP or UDP port on which the service is to be found.

dns_unknown_reply

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_answer`)

Generated on DNS reply resource records when the type of record is not one that Bro knows how to parse and generate another more specific event.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The type-independent part of the parsed answer record.

dns_EDNS_addl

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_edns_additional`)

Generated for DNS replies of type EDNS. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The parsed EDNS reply.

dns_TSIG_addl

Type:	`event` (c: `connection`, msg: `dns_msg`, ans: `dns_tsig_additional`)

Generated for DNS replies of type TSIG. For replies with multiple answers, an individual event of the corresponding type is raised for each.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.
Ans:	The parsed TSIG reply.

dns_end

Type:	`event` (c: `connection`, msg: `dns_msg`)

Generated at the end of processing a DNS packet. This event is the last dns_* event that will be raised for a DNS query/reply and signals that all resource records have been passed on.

See Wikipedia for more information about the DNS protocol. Bro analyzes both UDP and TCP DNS sessions.

C:	The connection, which may be UDP or TCP depending on the type of the transport-layer session being analyzed.
Msg:	The parsed DNS message header.

dns_full_request

Type:	`event` ()

Deprecated. Will be removed.

Todo

Unclear what this event is for; it’s never raised. We should just remove it.

non_dns_request

Type:	`event` (c: `connection`, msg: `string`)
Msg:	The raw DNS payload.

Note

This event is deprecated and superseded by Bro’s dynamic protocol detection framework.

Bro::File

Generic file analyzer

Components

Analyzer::ANALYZER_FTP_DATA

Analyzer::ANALYZER_IRC_DATA

Events

file_transferred

Type:	`event` (c: `connection`, prefix: `string`, descr: `string`, mime_type: `string`)

Generated when a TCP connection associated w/ file data transfer is seen (e.g. as happens w/ FTP or IRC).

C:	The connection over which file data is transferred.
Prefix:	Up to 1024 bytes of the file data.
Descr:	Deprecated/unused argument.
Mime_type:	MIME type of the file or “<unknown>” if no file magic signatures matched.

Bro::Finger

Finger analyzer

Components

Analyzer::ANALYZER_FINGER

Events

finger_request

Type:	`event` (c: `connection`, full: `bool`, username: `string`, hostname: `string`)

Generated for Finger requests.

See Wikipedia for more information about the Finger protocol.

C:	The connection.
Full:	True if verbose information is requested (`/W` switch).
Username:	The request’s user name.
Hostname:	The request’s host name.

Bro::FTP

FTP analyzer

Components

Analyzer::ANALYZER_FTP

Analyzer::ANALYZER_FTP_ADAT

Types

ftp_port

Type:

record

h: addr: The host’s address.
p: port: The host’s port.
valid: bool: True if format was right. Only then are h and p valid.

A parsed host/port combination describing server endpoint for an upcoming data transfer.

Events

ftp_request

Type:	`event` (c: `connection`, command: `string`, arg: `string`)

Generated for client-side FTP commands.

See Wikipedia for more information about the FTP protocol.

C:	The connection.
Command:	The FTP command issued by the client (without any arguments).
Arg:	The arguments going with the command.

ftp_reply

Type:	`event` (c: `connection`, code: `count`, msg: `string`, cont_resp: `bool`)

Generated for server-side FTP replies.

See Wikipedia for more information about the FTP protocol.

C:	The connection.
Code:	The numerical response code the server responded with.
Msg:	The textual message of the response.
Cont_resp:	True if the reply line is tagged as being continued to the next line. If so, further events will be raised and a handler may want to reassemble the pieces before processing the response any further.

Functions

parse_ftp_port

Type:	`function` (s: `string`) : `ftp_port`

Converts a string representation of the FTP PORT command to an ftp_port.

S:	The string of the FTP PORT command, e.g., `"10,0,0,1,4,31"`.
Returns:	The FTP PORT, e.g., `[h=10.0.0.1, p=1055/tcp, valid=T]`.

parse_eftp_port

Type:	`function` (s: `string`) : `ftp_port`

Converts a string representation of the FTP EPRT command (see RFC 2428) to an ftp_port. The format is "EPRT<space><d><net-prt><d><net-addr><d><tcp-port><d>", where <d> is a delimiter in the ASCII range 33-126 (usually |).

S:	The string of the FTP EPRT command, e.g., `"\|1\|10.0.0.1\|1055\|"`.
Returns:	The FTP PORT, e.g., `[h=10.0.0.1, p=1055/tcp, valid=T]`.

parse_ftp_pasv

Type:	`function` (str: `string`) : `ftp_port`

Converts the result of the FTP PASV command to an ftp_port.

Str:	The string containing the result of the FTP PASV command.
Returns:	The FTP PORT, e.g., `[h=10.0.0.1, p=1055/tcp, valid=T]`.

parse_ftp_epsv

Type:	`function` (str: `string`) : `ftp_port`

Converts the result of the FTP EPSV command (see RFC 2428) to an ftp_port. The format is "<text> (<d><d><d><tcp-port><d>)", where <d> is a delimiter in the ASCII range 33-126 (usually |).

Str:	The string containing the result of the FTP EPSV command.
Returns:	The FTP PORT, e.g., `[h=10.0.0.1, p=1055/tcp, valid=T]`.

fmt_ftp_port

Type:	`function` (a: `addr`, p: `port`) : `string`

Formats an IP address and TCP port as an FTP PORT command. For example, 10.0.0.1 and 1055/tcp yields "10,0,0,1,4,31".

A:	The IP address.
P:	The TCP port.
Returns:	The FTP PORT string.

Bro::Gnutella

Gnutella analyzer

Components

Analyzer::ANALYZER_GNUTELLA

Events

gnutella_text_msg

Type:	`event` (c: `connection`, orig: `bool`, headers: `string`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

gnutella_binary_msg

Type:	`event` (c: `connection`, orig: `bool`, msg_type: `count`, ttl: `count`, hops: `count`, msg_len: `count`, payload: `string`, payload_len: `count`, trunc: `bool`, complete: `bool`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

gnutella_partial_binary_msg

Type:	`event` (c: `connection`, orig: `bool`, msg: `string`, len: `count`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

gnutella_establish

Type:	`event` (c: `connection`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

gnutella_not_establish

Type:	`event` (c: `connection`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

gnutella_http_notify

Type:	`event` (c: `connection`)

TODO.

See Wikipedia for more information about the Gnutella protocol.

Todo

Bro::GSSAPI

GSSAPI analyzer

Components

Analyzer::ANALYZER_GSSAPI

Events

gssapi_neg_result

Type:	`event` (c: `connection`, state: `count`)

Generated for GSSAPI negotiation results.

C:	The connection.
State:	The resulting state of the negotiation.

Bro::GTPv1

GTPv1 analyzer

Components

Analyzer::ANALYZER_GTPV1

Events

gtpv1_message

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`)

Generated for any GTP message with a GTPv1 header.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.

gtpv1_g_pdu_packet

Type:	`event` (outer: `connection`, inner_gtp: `gtpv1_hdr`, inner_ip: `pkt_hdr`)

Generated for GTPv1 G-PDU packets. That is, packets with a UDP payload that includes a GTP header followed by an IPv4 or IPv6 packet.

Outer:	The GTP outer tunnel connection.
Inner_gtp:	The GTP header.
Inner_ip:	The inner IP and transport layer packet headers.

Note

Since this event may be raised on a per-packet basis, handling it may become particularly expensive for real-time analysis.

gtpv1_create_pdp_ctx_request

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_create_pdp_ctx_request_elements`)

Generated for GTPv1-C Create PDP Context Request messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

gtpv1_create_pdp_ctx_response

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_create_pdp_ctx_response_elements`)

Generated for GTPv1-C Create PDP Context Response messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

gtpv1_update_pdp_ctx_request

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_update_pdp_ctx_request_elements`)

Generated for GTPv1-C Update PDP Context Request messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

gtpv1_update_pdp_ctx_response

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_update_pdp_ctx_response_elements`)

Generated for GTPv1-C Update PDP Context Response messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

gtpv1_delete_pdp_ctx_request

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_delete_pdp_ctx_request_elements`)

Generated for GTPv1-C Delete PDP Context Request messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

gtpv1_delete_pdp_ctx_response

Type:	`event` (c: `connection`, hdr: `gtpv1_hdr`, elements: `gtp_delete_pdp_ctx_response_elements`)

Generated for GTPv1-C Delete PDP Context Response messages.

C:	The connection over which the message is sent.
Hdr:	The GTPv1 header.
Elements:	The set of Information Elements comprising the message.

Bro::HTTP

HTTP analyzer

Components

Analyzer::ANALYZER_HTTP

Events

http_request

Type:	`event` (c: `connection`, method: `string`, original_URI: `string`, unescaped_URI: `string`, version: `string`)

Generated for HTTP requests. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. This event is generated as soon as a request’s initial line has been parsed, and before any http_header events are raised.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Method:	The HTTP method extracted from the request (e.g., `GET`, `POST`).
Original_URI:	The unprocessed URI as specified in the request.
Unescaped_URI:	The URI with all percent-encodings decoded.
Version:	The version number specified in the request (e.g., `1.1`).

http_reply

Type:	`event` (c: `connection`, version: `string`, code: `count`, reason: `string`)

Generated for HTTP replies. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. This event is generated as soon as a reply’s initial line has been parsed, and before any http_header events are raised.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Version:	The version number specified in the reply (e.g., `1.1`).
Code:	The numerical response code returned by the server.
Reason:	The textual description returned by the server along with code.

http_header

Type:	`event` (c: `connection`, is_orig: `bool`, name: `string`, value: `string`)

Generated for HTTP headers. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the header was sent by the originator of the TCP connection.
Name:	The name of the header.
Value:	The value of the header.

Note

This event is also raised for headers found in nested body entities.

http_all_headers

Type:	`event` (c: `connection`, is_orig: `bool`, hlist: `mime_header_list`)

Generated for HTTP headers, passing on all headers of an HTTP message at once. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the header was sent by the originator of the TCP connection.
Hlist:	A table containing all headers extracted from the current entity. The table is indexed by the position of the header (1 for the first, 2 for the second, etc.).

Note

This event is also raised for headers found in nested body entities.

http_begin_entity

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated when starting to parse an HTTP body entity. This event is generated at least once for each non-empty (client or server) HTTP body; and potentially more than once if the body contains further nested MIME entities. Bro raises this event just before it starts parsing each entity’s content.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the entity was sent by the originator of the TCP connection.

http_end_entity

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated when finishing parsing an HTTP body entity. This event is generated at least once for each non-empty (client or server) HTTP body; and potentially more than once if the body contains further nested MIME entities. Bro raises this event at the point when it has finished parsing an entity’s content.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the entity was sent by the originator of the TCP connection.

http_entity_data

Type:	`event` (c: `connection`, is_orig: `bool`, length: `count`, data: `string`)

Generated when parsing an HTTP body entity, passing on the data. This event can potentially be raised many times for each entity, each time passing a chunk of the data of not further defined size.

A common idiom for using this event is to first reassemble the data at the scripting layer by concatenating it to a successively growing string; and only perform further content analysis once the corresponding http_end_entity event has been raised. Note, however, that doing so can be quite expensive for HTTP tranders. At the very least, one should impose an upper size limit on how much data is being buffered.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the entity was sent by the originator of the TCP connection.
Length:	The length of data.
Data:	One chunk of raw entity data.

http_content_type

Type:	`event` (c: `connection`, is_orig: `bool`, ty: `string`, subty: `string`)

Generated for reporting an HTTP body’s content type. This event is generated at the end of parsing an HTTP header, passing on the MIME type as specified by the Content-Type header. If that header is missing, this event is still raised with a default value of text/plain.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the entity was sent by the originator of the TCP connection.
Ty:	The main type.
Subty:	The subtype.

Note

This event is also raised for headers found in nested body entities.

http_message_done

Type:	`event` (c: `connection`, is_orig: `bool`, stat: `http_message_stat`)

Generated once at the end of parsing an HTTP message. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. A “message” is one top-level HTTP entity, such as a complete request or reply. Each message can have further nested sub-entities inside. This event is raised once all sub-entities belonging to a top-level message have been processed (and their corresponding http_entity_* events generated).

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Is_orig:	True if the entity was sent by the originator of the TCP connection.
Stat:	Further meta information about the message.

http_event

Type:	`event` (c: `connection`, event_type: `string`, detail: `string`)

Generated for errors found when decoding HTTP requests or replies.

See Wikipedia for more information about the HTTP protocol.

C:	The connection.
Event_type:	A string describing the general category of the problem found (e.g., `illegal format`).
Detail:	Further more detailed description of the error.

http_stats

Type:	`event` (c: `connection`, stats: `http_stats_rec`)

Generated at the end of an HTTP session to report statistics about it. This event is raised after all of an HTTP session’s requests and replies have been fully processed.

C:	The connection.
Stats:	Statistics summarizing HTTP-level properties of the finished connection.

Functions

skip_http_entity_data

Type:	`function` (c: `connection`, is_orig: `bool`) : `any`

Skips the data of the HTTP entity.

C:	The HTTP connection.
Is_orig:	If true, the client data is skipped, and the server data otherwise.

Bro::ICMP

ICMP analyzer

Components

Analyzer::ANALYZER_ICMP

Events

icmp_sent

Type:	`event` (c: `connection`, icmp: `icmp_conn`)

Generated for all ICMP messages that are not handled separately with dedicated ICMP events. Bro’s ICMP analyzer handles a number of ICMP messages directly with dedicated events. This event acts as a fallback for those it doesn’t.

See Wikipedia for more information about the ICMP protocol.

C:	The connection record for the corresponding ICMP flow.
Icmp:	Additional ICMP-specific information augmenting the standard connection record c.

icmp_sent_payload

Type:	`event` (c: `connection`, icmp: `icmp_conn`, payload: `string`)

The same as icmp_sent except containing the ICMP payload.

C:	The connection record for the corresponding ICMP flow.
Icmp:	Additional ICMP-specific information augmenting the standard connection record c.
Payload:	The payload of the ICMP message.

icmp_echo_request

Type:	`event` (c: `connection`, icmp: `icmp_conn`, id: `count`, seq: `count`, payload: `string`)

Generated for ICMP echo request messages.

See Wikipedia for more information about the ICMP protocol.

C:	The connection record for the corresponding ICMP flow.
Icmp:	Additional ICMP-specific information augmenting the standard connection record c.
Id:	The echo request identifier.
Seq:	The echo request sequence number.
Payload:	The message-specific data of the packet payload, i.e., everything after the first 8 bytes of the ICMP header.

Bro::Ident

Ident analyzer

Components

Analyzer::ANALYZER_IDENT

Events

ident_request

Type:	`event` (c: `connection`, lport: `port`, rport: `port`)

Generated for Ident requests.

See Wikipedia for more information about the Ident protocol.

C:	The connection.
Lport:	The request’s local port.
Rport:	The request’s remote port.

Bro::IMAP

IMAP analyzer (StartTLS only)

Components

Analyzer::ANALYZER_IMAP

Events

imap_capabilities

Type:	`event` (c: `connection`, capabilities: `string_vec`)

Generated when a server sends a capability list to the client, after being queried using the CAPABILITY command.

C:	The connection.
Capabilities:	The list of IMAP capabilities as sent by the server.

imap_starttls

Type:	`event` (c: `connection`)

Generated when a IMAP connection goes encrypted after a successful StartTLS exchange between the client and the server.

C:	The connection.

Bro::InterConn

InterConn analyzer deprecated

Components

Analyzer::ANALYZER_INTERCONN

Events

interconn_stats

Type:	`event` (c: `connection`, os: `interconn_endp_stats`, rs: `interconn_endp_stats`)

Deprecated. Will be removed.

interconn_remove_conn

Type:	`event` (c: `connection`)

Deprecated. Will be removed.

Bro::IRC

IRC analyzer

Components

Analyzer::ANALYZER_IRC

Events

irc_request

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, command: `string`, arguments: `string`)

Generated for all client-side IRC commands.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	Always true.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Command:	The command.
Arguments:	The arguments for the command.

Note

This event is generated only for messages that originate at the client-side. Commands coming in from remote trigger the irc_message event instead.

irc_reply

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, code: `count`, params: `string`)

Generated for all IRC replies. IRC replies are sent in response to a request and come with a reply code.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the reply. IRC uses the prefix to indicate the true origin of a message.
Code:	The reply code, as specified by the protocol.
Params:	The reply’s parameters.

irc_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, command: `string`, message: `string`)

Generated for IRC commands forwarded from the server to the client.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	Always false.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Command:	The command.
Message:	TODO.

Note

This event is generated only for messages that are forwarded by the server to the client. Commands coming from client trigger the irc_request event instead.

irc_quit_message

Type:	`event` (c: `connection`, is_orig: `bool`, nick: `string`, message: `string`)

Generated for IRC messages of type quit. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Nick:	The nickname coming with the message.
Message:	The text included with the message.

irc_privmsg_message

Type:	`event` (c: `connection`, is_orig: `bool`, source: `string`, target: `string`, message: `string`)

Generated for IRC messages of type privmsg. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Source:	The source of the private communication.
Target:	The target of the private communication.
Message:	The text of communication.

irc_notice_message

Type:	`event` (c: `connection`, is_orig: `bool`, source: `string`, target: `string`, message: `string`)

Generated for IRC messages of type notice. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Source:	The source of the private communication.
Target:	The target of the private communication.
Message:	The text of communication.

irc_squery_message

Type:	`event` (c: `connection`, is_orig: `bool`, source: `string`, target: `string`, message: `string`)

Generated for IRC messages of type squery. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Source:	The source of the private communication.
Target:	The target of the private communication.
Message:	The text of communication.

irc_join_message

Type:	`event` (c: `connection`, is_orig: `bool`, info_list: `irc_join_list`)

Generated for IRC messages of type join. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Info_list:	The user information coming with the command.

irc_part_message

Type:	`event` (c: `connection`, is_orig: `bool`, nick: `string`, chans: `string_set`, message: `string`)

Generated for IRC messages of type part. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Nick:	The nickname coming with the message.
Chans:	The set of channels affected.
Message:	The text coming with the message.

irc_nick_message

Type:	`event` (c: `connection`, is_orig: `bool`, who: `string`, newnick: `string`)

Generated for IRC messages of type nick. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Who:	The user changing its nickname.
Newnick:	The new nickname.

irc_invalid_nick

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated when a server rejects an IRC nickname.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.

irc_network_info

Type:	`event` (c: `connection`, is_orig: `bool`, users: `count`, services: `count`, servers: `count`)

Generated for an IRC reply of type luserclient.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Users:	The number of users as returned in the reply.
Services:	The number of services as returned in the reply.
Servers:	The number of servers as returned in the reply.

irc_server_info

Type:	`event` (c: `connection`, is_orig: `bool`, users: `count`, services: `count`, servers: `count`)

Generated for an IRC reply of type luserme.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Users:	The number of users as returned in the reply.
Services:	The number of services as returned in the reply.
Servers:	The number of servers as returned in the reply.

irc_channel_info

Type:	`event` (c: `connection`, is_orig: `bool`, chans: `count`)

Generated for an IRC reply of type luserchannels.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Chans:	The number of channels as returned in the reply.

irc_who_line

Type:	`event` (c: `connection`, is_orig: `bool`, target_nick: `string`, channel: `string`, user: `string`, host: `string`, server: `string`, nick: `string`, params: `string`, hops: `count`, real_name: `string`)

Generated for an IRC reply of type whoreply.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Target_nick:	The target nickname.
Channel:	The channel.
User:	The user.
Host:	The host.
Server:	The server.
Nick:	The nickname.
Params:	The parameters.
Hops:	The hop count.
Real_name:	The real name.

irc_names_info

Type:	`event` (c: `connection`, is_orig: `bool`, c_type: `string`, channel: `string`, users: `string_set`)

Generated for an IRC reply of type namereply.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
C_type:	The channel type.
Channel:	The channel.
Users:	The set of users.

irc_whois_operator_line

Type:	`event` (c: `connection`, is_orig: `bool`, nick: `string`)

Generated for an IRC reply of type whoisoperator.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Nick:	The nickname specified in the reply.

irc_whois_channel_line

Type:	`event` (c: `connection`, is_orig: `bool`, nick: `string`, chans: `string_set`)

Generated for an IRC reply of type whoischannels.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Nick:	The nickname specified in the reply.
Chans:	The set of channels returned.

irc_whois_user_line

Type:	`event` (c: `connection`, is_orig: `bool`, nick: `string`, user: `string`, host: `string`, real_name: `string`)

Generated for an IRC reply of type whoisuser.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Nick:	The nickname specified in the reply.
User:	The user name specified in the reply.
Host:	The host name specified in the reply.
Real_name:	The real name specified in the reply.

irc_oper_response

Type:	`event` (c: `connection`, is_orig: `bool`, got_oper: `bool`)

Generated for IRC replies of type youreoper and nooperhost.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Got_oper:	True if the oper command was executed successfully (youreport) and false otherwise (nooperhost).

irc_global_users

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, msg: `string`)

Generated for an IRC reply of type globalusers.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Msg:	The message coming with the reply.

irc_channel_topic

Type:	`event` (c: `connection`, is_orig: `bool`, channel: `string`, topic: `string`)

Generated for an IRC reply of type topic.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Channel:	The channel name specified in the reply.
Topic:	The topic specified in the reply.

irc_who_message

Type:	`event` (c: `connection`, is_orig: `bool`, mask: `string`, oper: `bool`)

Generated for IRC messages of type who. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Mask:	The mask specified in the message.
Oper:	True if the operator flag was set.

irc_whois_message

Type:	`event` (c: `connection`, is_orig: `bool`, server: `string`, users: `string`)

Generated for IRC messages of type whois. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Server:	TODO.
Users:	TODO.

irc_oper_message

Type:	`event` (c: `connection`, is_orig: `bool`, user: `string`, password: `string`)

Generated for IRC messages of type oper. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
User:	The user specified in the message.
Password:	The password specified in the message.

irc_kick_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, chans: `string`, users: `string`, comment: `string`)

Generated for IRC messages of type kick. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Chans:	The channels specified in the message.
Users:	The users specified in the message.
Comment:	The comment specified in the message.

irc_error_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, message: `string`)

Generated for IRC messages of type error. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Message:	The textual description specified in the message.

irc_invite_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, nickname: `string`, channel: `string`)

Generated for IRC messages of type invite. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Nickname:	The nickname specified in the message.
Channel:	The channel specified in the message.

irc_mode_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, params: `string`)

Generated for IRC messages of type mode. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Params:	The parameters coming with the message.

irc_squit_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, server: `string`, message: `string`)

Generated for IRC messages of type squit. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Server:	The server specified in the message.
Message:	The textual description specified in the message.

irc_dcc_message

Type:	`event` (c: `connection`, is_orig: `bool`, prefix: `string`, target: `string`, dcc_type: `string`, argument: `string`, address: `addr`, dest_port: `count`, size: `count`)

Generated for IRC messages of type dcc. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Prefix:	The optional prefix coming with the command. IRC uses the prefix to indicate the true origin of a message.
Target:	The target specified in the message.
Dcc_type:	The DCC type specified in the message.
Argument:	The argument specified in the message.
Address:	The address specified in the message.
Dest_port:	The destination port specified in the message.
Size:	The size specified in the message.

irc_user_message

Type:	`event` (c: `connection`, is_orig: `bool`, user: `string`, host: `string`, server: `string`, real_name: `string`)

Generated for IRC messages of type user. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
User:	The user specified in the message.
Host:	The host name specified in the message.
Server:	The server name specified in the message.
Real_name:	The real name specified in the message.

irc_password_message

Type:	`event` (c: `connection`, is_orig: `bool`, password: `string`)

Generated for IRC messages of type password. This event is generated for messages coming from both the client and the server.

See Wikipedia for more information about the IRC protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Password:	The password specified in the message.

irc_starttls

Type:	`event` (c: `connection`)

Generated if an IRC connection switched to TLS using STARTTLS. After this event no more IRC events will be raised for the connection. See the SSL analyzer for related SSL events, which will now be generated.

C:	The connection.

Bro::KRB

Kerberos analyzer

Components

Analyzer::ANALYZER_KRB

Analyzer::ANALYZER_KRB_TCP

Types

KRB::Error_Msg

Type:

record

pvno: count: Protocol version number (5 for KRB5)
msg_type: count: The message type (30 for ERROR_MSG)
client_time: time &optional: Current time on the client
server_time: time: Current time on the server
error_code: count: The specific error code
client_realm: string &optional: Realm of the ticket
client_name: string &optional: Name on the ticket
service_realm: string: Realm of the service
service_name: string: Name of the service
error_text: string &optional: Additional text to explain the error
pa_data: vector of KRB::Type_Value &optional: Optional pre-authentication data

The data from the ERROR_MSG message. See RFC 4120.

KRB::SAFE_Msg

Type:

record

pvno: count: Protocol version number (5 for KRB5)
msg_type: count: The message type (20 for SAFE_MSG)
data: string: The application-specific data that is being passed from the sender to the reciever
timestamp: time &optional: Current time from the sender of the message
seq: count &optional: Sequence number used to detect replays
sender: KRB::Host_Address &optional: Sender address
recipient: KRB::Host_Address &optional: Recipient address

The data from the SAFE message. See RFC 4120.

KRB::KDC_Options

Type:

record

forwardable: bool: The ticket to be issued should have its forwardable flag set.
forwarded: bool: A (TGT) request for forwarding.
proxiable: bool: The ticket to be issued should have its proxiable flag set.
proxy: bool: A request for a proxy.
allow_postdate: bool: The ticket to be issued should have its may-postdate flag set.
postdated: bool: A request for a postdated ticket.
renewable: bool: The ticket to be issued should have its renewable flag set.
opt_hardware_auth: bool: Reserved for opt_hardware_auth
disable_transited_check: bool: Request that the KDC not check the transited field of a TGT against the policy of the local realm before it will issue derivative tickets based on the TGT.
renewable_ok: bool: If a ticket with the requested lifetime cannot be issued, a renewable ticket is acceptable
enc_tkt_in_skey: bool: The ticket for the end server is to be encrypted in the session key from the additional TGT provided
renew: bool: The request is for a renewal
validate: bool: The request is to validate a postdated ticket.

KDC Options. See RFC 4120

KRB::AP_Options

Type:

record

use_session_key: bool: Indicates that user-to-user-authentication is in use
mutual_required: bool: Mutual authentication is required

AP Options. See RFC 4120

KRB::Type_Value

Type:

record

data_type: count: The data type
val: string: The data value

Used in a few places in the Kerberos analyzer for elements that have a type and a string value.

KRB::Ticket

Type:

record

pvno: count: Protocol version number (5 for KRB5)
realm: string: Realm
service_name: string: Name of the service
cipher: count: Cipher the ticket was encrypted with
ciphertext: string &optional: Cipher text of the ticket

A Kerberos ticket. See RFC 4120.

KRB::Ticket_Vector

Type:	`vector` of `KRB::Ticket`

KRB::Host_Address

Type:

record

ip: addr &log &optional: IPv4 or IPv6 address
netbios: string &log &optional: NetBIOS address
unknown: KRB::Type_Value &optional: Some other type that we don’t support yet

A Kerberos host address See RFC 4120.

KRB::KDC_Request

Type:

record

pvno: count: Protocol version number (5 for KRB5)
msg_type: count: The message type (10 for AS_REQ, 12 for TGS_REQ)
pa_data: vector of KRB::Type_Value &optional: Optional pre-authentication data
kdc_options: KRB::KDC_Options: Options specified in the request
client_name: string &optional: Name on the ticket
service_realm: string: Realm of the service
service_name: string &optional: Name of the service
from: time &optional: Time the ticket is good from
till: time: Time the ticket is good till
rtime: time &optional: The requested renew-till time
nonce: count: A random nonce generated by the client
encryption_types: vector of count: The desired encryption algorithms, in order of preference
host_addrs: vector of KRB::Host_Address &optional: Any additional addresses the ticket should be valid for
additional_tickets: vector of KRB::Ticket &optional: Additional tickets may be included for certain transactions

The data from the AS_REQ and TGS_REQ messages. See RFC 4120.

KRB::KDC_Response

Type:

record

pvno: count: Protocol version number (5 for KRB5)
msg_type: count: The message type (11 for AS_REP, 13 for TGS_REP)
pa_data: vector of KRB::Type_Value &optional: Optional pre-authentication data
client_realm: string &optional: Realm on the ticket
client_name: string: Name on the service
ticket: KRB::Ticket: The ticket that was issued

The data from the AS_REQ and TGS_REQ messages. See RFC 4120.

Events

krb_as_request

Type:	`event` (c: `connection`, msg: `KRB::KDC_Request`)

A Kerberos 5 Authentication Server (AS) Request as defined in RFC 4120. The AS request contains a username of the client requesting authentication, and returns an AS reply with an encrypted Ticket Granting Ticket (TGT) for that user. The TGT can then be used to request further tickets for other services.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Msg:	A Kerberos KDC request message data structure.

krb_as_response

Type:	`event` (c: `connection`, msg: `KRB::KDC_Response`)

A Kerberos 5 Authentication Server (AS) Response as defined in RFC 4120. Following the AS request for a user, an AS reply contains an encrypted Ticket Granting Ticket (TGT) for that user. The TGT can then be used to request further tickets for other services.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Msg:	A Kerberos KDC reply message data structure.

krb_tgs_request

Type:	`event` (c: `connection`, msg: `KRB::KDC_Request`)

A Kerberos 5 Ticket Granting Service (TGS) Request as defined in RFC 4120. Following the Authentication Server exchange, if successful, the client now has a Ticket Granting Ticket (TGT). To authenticate to a Kerberized service, the client requests a Service Ticket, which will be returned in the TGS reply.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Msg:	A Kerberos KDC request message data structure.

krb_tgs_response

Type:	`event` (c: `connection`, msg: `KRB::KDC_Response`)

A Kerberos 5 Ticket Granting Service (TGS) Response as defined in RFC 4120. This message returns a Service Ticket to the client, which is encrypted with the service’s long-term key, and which the client can use to authenticate to that service.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Msg:	A Kerberos KDC reply message data structure.

krb_ap_request

Type:	`event` (c: `connection`, ticket: `KRB::Ticket`, opts: `KRB::AP_Options`)

A Kerberos 5 Authentication Header (AP) Request as defined in RFC 4120. This message contains authentication information that should be part of the first message in an authenticated transaction.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Ticket:	The Kerberos ticket being used for authentication.
Opts:	A Kerberos AP options data structure.

krb_ap_response

Type:	`event` (c: `connection`)

A Kerberos 5 Authentication Header (AP) Response as defined in RFC 4120. This is used if mutual authentication is desired. All of the interesting information in here is encrypted, so the event doesn’t have much useful data, but it’s provided in case it’s important to know that this message was sent.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.

krb_priv

Type:	`event` (c: `connection`, is_orig: `bool`)

A Kerberos 5 Private Message as defined in RFC 4120. This is a private (encrypted) application message, so the event doesn’t have much useful data, but it’s provided in case it’s important to know that this message was sent.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Is_orig:	Whether the originator of the connection sent this message.

krb_safe

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `KRB::SAFE_Msg`)

A Kerberos 5 Safe Message as defined in RFC 4120. This is a safe (checksummed) application message.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Is_orig:	Whether the originator of the connection sent this message.
Msg:	A Kerberos SAFE message data structure.

krb_cred

Type:	`event` (c: `connection`, is_orig: `bool`, tickets: `KRB::Ticket_Vector`)

A Kerberos 5 Credential Message as defined in RFC 4120. This is a private (encrypted) message to forward credentials.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Is_orig:	Whether the originator of the connection sent this message.
Tickets:	Tickets obtained from the KDC that are being forwarded.

krb_error

Type:	`event` (c: `connection`, msg: `KRB::Error_Msg`)

A Kerberos 5 Error Message as defined in RFC 4120.

See Wikipedia for more information about the Kerberos protocol.

C:	The connection over which this Kerberos message was sent.
Msg:	A Kerberos error message data structure.

Bro::Login

Telnet/Rsh/Rlogin analyzers

Components

Analyzer::ANALYZER_CONTENTS_RLOGIN

Analyzer::ANALYZER_CONTENTS_RSH

Analyzer::ANALYZER_LOGIN

Analyzer::ANALYZER_NVT

Analyzer::ANALYZER_RLOGIN

Analyzer::ANALYZER_RSH

Analyzer::ANALYZER_TELNET

Events

rsh_request

Type:	`event` (c: `connection`, client_user: `string`, server_user: `string`, line: `string`, new_session: `bool`)

Generated for client side commands on an RSH connection.

See RFC 1258 for more information about the Rlogin/Rsh protocol.

C:	The connection.
Client_user:	The client-side user name as sent in the initial protocol handshake.
Server_user:	The server-side user name as sent in the initial protocol handshake.
Line:	The command line sent in the request.
New_session:	True if this is the first command of the Rsh session.

Note

For historical reasons, these events are separate from the login_ events. Ideally, they would all be handled uniquely.

Todo

rsh_reply

Type:	`event` (c: `connection`, client_user: `string`, server_user: `string`, line: `string`)

Generated for client side commands on an RSH connection.

See RFC 1258 for more information about the Rlogin/Rsh protocol.

C:	The connection.
Client_user:	The client-side user name as sent in the initial protocol handshake.
Server_user:	The server-side user name as sent in the initial protocol handshake.
Line:	The command line sent in the request.

Note

For historical reasons, these events are separate from the login_ events. Ideally, they would all be handled uniquely.

Todo

login_failure

Type:	`event` (c: `connection`, user: `string`, client_user: `string`, password: `string`, line: `string`)

Generated for Telnet/Rlogin login failures. The login analyzer inspects Telnet/Rlogin sessions to heuristically extract username and password information as well as the text returned by the login server. This event is raised if a login attempt appears to have been unsuccessful.

C:	The connection.
User:	The user name tried.
Client_user:	For Telnet connections, this is an empty string, but for Rlogin connections, it is the client name passed in the initial authentication information (to check against .rhosts).
Password:	The password tried.
Line:	The line of text that led the analyzer to conclude that the authentication had failed.

Note

The login analyzer depends on a set of script-level variables that need to be configured with patterns identifying login attempts. This configuration has not yet been ported over from Bro 1.5 to Bro 2.x, and the analyzer is therefore not directly usable at the moment.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_success

Type:	`event` (c: `connection`, user: `string`, client_user: `string`, password: `string`, line: `string`)

Generated for successful Telnet/Rlogin logins. The login analyzer inspects Telnet/Rlogin sessions to heuristically extract username and password information as well as the text returned by the login server. This event is raised if a login attempt appears to have been successful.

C:	The connection.
User:	The user name used.
Client_user:	For Telnet connections, this is an empty string, but for Rlogin connections, it is the client name passed in the initial authentication information (to check against .rhosts).
Password:	The password used.
Line:	The line of text that led the analyzer to conclude that the authentication had succeeded.

Note

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_input_line

Type:	`event` (c: `connection`, line: `string`)

Generated for lines of input on Telnet/Rlogin sessions. The line will have control characters (such as in-band Telnet options) removed.

C:	The connection.
Line:	The input line.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_output_line

Type:	`event` (c: `connection`, line: `string`)

Generated for lines of output on Telnet/Rlogin sessions. The line will have control characters (such as in-band Telnet options) removed.

C:	The connection.
Line:	The ouput line.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_confused

Type:	`event` (c: `connection`, msg: `string`, line: `string`)

Generated when tracking of Telnet/Rlogin authentication failed. As Bro’s login analyzer uses a number of heuristics to extract authentication information, it may become confused. If it can no longer correctly track the authentication dialog, it raises this event.

C:	The connection.
Msg:	Gives the particular problem the heuristics detected (for example, `multiple_login_prompts` means that the engine saw several login prompts in a row, without the type-ahead from the client side presumed necessary to cause them)
Line:	The line of text that caused the heuristics to conclude they were confused.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_confused_text

Type:	`event` (c: `connection`, line: `string`)

Generated after getting confused while tracking a Telnet/Rlogin authentication dialog. The login analyzer generates this even for every line of user input after it has reported login_confused for a connection.

C:	The connection.
Line:	The line the user typed.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_terminal

Type:	`event` (c: `connection`, terminal: `string`)

Generated for clients transmitting a terminal type in a Telnet session. This information is extracted out of environment variables sent as Telnet options.

C:	The connection.
Terminal:	The TERM value transmitted.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_display

Type:	`event` (c: `connection`, display: `string`)

Generated for clients transmitting an X11 DISPLAY in a Telnet session. This information is extracted out of environment variables sent as Telnet options.

C:	The connection.
Display:	The DISPLAY transmitted.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

authentication_accepted

Type:	`event` (name: `string`, c: `connection`)

Generated when a Telnet authentication has been successful. The Telnet protocol includes options for negotiating authentication. When such an option is sent from client to server and the server replies that it accepts the authentication, then the event engine generates this event.

See Wikipedia for more information about the Telnet protocol.

Name:	The authenticated name.
C:	The connection.

Note

This event inspects the corresponding Telnet option while login_success heuristically determines success by watching session data.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

authentication_rejected

Type:	`event` (name: `string`, c: `connection`)

Generated when a Telnet authentication has been unsuccessful. The Telnet protocol includes options for negotiating authentication. When such an option is sent from client to server and the server replies that it did not accept the authentication, then the event engine generates this event.

See Wikipedia for more information about the Telnet protocol.

Name:	The attempted authentication name.
C:	The connection.

Note

This event inspects the corresponding Telnet option while login_success heuristically determines failure by watching session data.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

authentication_skipped

Type:	`event` (c: `connection`)

Generated for Telnet/Rlogin sessions when a pattern match indicates that no authentication is performed.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.

Note

The login analyzer depends on a set of script-level variables that need to be configured with patterns identifying activity. This configuration has not yet been ported over from Bro 1.5 to Bro 2.x, and the analyzer is therefore not directly usable at the moment.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

login_prompt

Type:	`event` (c: `connection`, prompt: `string`)

Generated for clients transmitting a terminal prompt in a Telnet session. This information is extracted out of environment variables sent as Telnet options.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.
Prompt:	The TTYPROMPT transmitted.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

activating_encryption

Type:	`event` (c: `connection`)

Generated for Telnet sessions when encryption is activated. The Telnet protocol includes options for negotiating encryption. When such a series of options is successfully negotiated, the event engine generates this event.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.

inconsistent_option

Type:	`event` (c: `connection`)

Generated for an inconsistent Telnet option. Telnet options are specified by the client and server stating which options they are willing to support vs. which they are not, and then instructing one another which in fact they should or should not use for the current connection. If the event engine sees a peer violate either what the other peer has instructed it to do, or what it itself offered in terms of options in the past, then the engine generates this event.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.

bad_option

Type:	`event` (c: `connection`)

Generated for an ill-formed or unrecognized Telnet option.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

bad_option_termination

Type:	`event` (c: `connection`)

Generated for a Telnet option that’s incorrectly terminated.

See Wikipedia for more information about the Telnet protocol.

C:	The connection.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

Functions

get_login_state

Type:	`function` (cid: `conn_id`) : `count`

Returns the state of the given login (Telnet or Rlogin) connection.

Cid:

The connection ID.

Returns:

False if the connection is not active or is not tagged as a login analyzer. Otherwise the function returns the state, which can be one of:

LOGIN_STATE_AUTHENTICATE: The connection is in its initial authentication dialog.

LOGIN_STATE_LOGGED_IN: The analyzer believes the user has successfully authenticated.

LOGIN_STATE_SKIP: The analyzer has skipped any further processing of the connection.

LOGIN_STATE_CONFUSED: The analyzer has concluded that it does not correctly know the state of the connection, and/or the username associated with it.

Bro::MIME

MIME parsing

Components

Events

mime_begin_entity

Type:	`event` (c: `connection`)

Generated when starting to parse an email MIME entity. MIME is a protocol-independent data format for encoding text and files, along with corresponding metadata, for transmission. Bro raises this event when it begins parsing a MIME entity extracted from an email protocol.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.

Note

Bro also extracts MIME entities from HTTP sessions. For those, however, it raises http_begin_entity instead.

mime_end_entity

Type:	`event` (c: `connection`)

Generated when finishing parsing an email MIME entity. MIME is a protocol-independent data format for encoding text and files, along with corresponding metadata, for transmission. Bro raises this event when it finished parsing a MIME entity extracted from an email protocol.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.

Note

Bro also extracts MIME entities from HTTP sessions. For those, however, it raises http_end_entity instead.

mime_one_header

Type:	`event` (c: `connection`, h: `mime_header_rec`)

Generated for individual MIME headers extracted from email MIME entities. MIME is a protocol-independent data format for encoding text and files, along with corresponding metadata, for transmission.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
H:	The parsed MIME header.

Note

Bro also extracts MIME headers from HTTP sessions. For those, however, it raises http_header instead.

mime_all_headers

Type:	`event` (c: `connection`, hlist: `mime_header_list`)

Generated for MIME headers extracted from email MIME entities, passing all headers at once. MIME is a protocol-independent data format for encoding text and files, along with corresponding metadata, for transmission.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Hlist:	A table containing all headers extracted from the current entity. The table is indexed by the position of the header (1 for the first, 2 for the second, etc.).

Note

Bro also extracts MIME headers from HTTP sessions. For those, however, it raises http_header instead.

mime_segment_data

Type:	`event` (c: `connection`, length: `count`, data: `string`)

Generated for chunks of decoded MIME data from email MIME entities. MIME is a protocol-independent data format for encoding text and files, along with corresponding metadata, for transmission. As Bro parses the data of an entity, it raises a sequence of these events, each coming as soon as a new chunk of data is available. In contrast, there is also mime_entity_data, which passes all of an entities data at once in a single block. While the latter is more convenient to handle, mime_segment_data is more efficient as Bro does not need to buffer the data. Thus, if possible, this event should be preferred.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Length:	The length of data.
Data:	The raw data of one segment of the current entity.

Note

Bro also extracts MIME data from HTTP sessions. For those, however, it raises http_entity_data (sic!) instead.

mime_entity_data

Type:	`event` (c: `connection`, length: `count`, data: `string`)

Generated for data decoded from an email MIME entity. This event delivers the complete content of a single MIME entity with the quoted-printable and and base64 data decoded. In contrast, there is also mime_segment_data, which passes on a sequence of data chunks as they come in. While mime_entity_data is more convenient to handle, mime_segment_data is more efficient as Bro does not need to buffer the data. Thus, if possible, the latter should be preferred.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Length:	The length of data.
Data:	The raw data of the complete entity.

Note

While Bro also decodes MIME entities extracted from HTTP sessions, there’s no corresponding event for that currently.

mime_all_data

Type:	`event` (c: `connection`, length: `count`, data: `string`)

Generated for passing on all data decoded from a single email MIME message. If an email message has more than one MIME entity, this event combines all their data into a single value for analysis. Note that because of the potentially significant buffering necessary, using this event can be expensive.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Length:	The length of data.
Data:	The raw data of all MIME entities concatenated.

Note

While Bro also decodes MIME entities extracted from HTTP sessions, there’s no corresponding event for that currently.

mime_event

Type:	`event` (c: `connection`, event_type: `string`, detail: `string`)

Generated for errors found when decoding email MIME entities.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Event_type:	A string describing the general category of the problem found (e.g., `illegal format`).
Detail:	Further more detailed description of the error.

Note

Bro also extracts MIME headers from HTTP sessions. For those, however, it raises http_event instead.

mime_content_hash

Type:	`event` (c: `connection`, content_len: `count`, hash_value: `string`)

Generated for decoded MIME entities extracted from email messages, passing on their MD5 checksums. Bro computes the MD5 over the complete decoded data of each MIME entity.

Bro’s MIME analyzer for emails currently supports SMTP and POP3. See Wikipedia for more information about MIME.

C:	The connection.
Content_len:	The length of the entity being hashed.
Hash_value:	The MD5 hash.

Note

While Bro also decodes MIME entities extracted from HTTP sessions, there’s no corresponding event for that currently.

Bro::Modbus

Modbus analyzer

Components

Analyzer::ANALYZER_MODBUS

Events

modbus_message

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, is_orig: `bool`)

Generated for any Modbus message regardless if the particular function is further supported or not.

C:	The connection.
Headers:	The headers for the modbus function.
Is_orig:	True if the event is raised for the originator side.

modbus_exception

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, code: `count`)

Generated for any Modbus exception message.

C:	The connection.
Headers:	The headers for the modbus function.
Code:	The exception code.

modbus_read_coils_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus read coils request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first coil to be read.
Quantity:	The number of coils to be read.

modbus_read_coils_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, coils: `ModbusCoils`)

Generated for a Modbus read coils response.

C:	The connection.
Headers:	The headers for the modbus function.
Coils:	The coil values returned from the device.

modbus_read_discrete_inputs_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus read discrete inputs request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first coil to be read.
Quantity:	The number of coils to be read.

modbus_read_discrete_inputs_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, coils: `ModbusCoils`)

Generated for a Modbus read discrete inputs response.

C:	The connection.
Headers:	The headers for the modbus function.
Coils:	The coil values returned from the device.

modbus_read_holding_registers_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus read holding registers request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first register to be read.
Quantity:	The number of registers to be read.

modbus_read_holding_registers_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, registers: `ModbusRegisters`)

Generated for a Modbus read holding registers response.

C:	The connection.
Headers:	The headers for the modbus function.
Registers:	The register values returned from the device.

modbus_read_input_registers_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus read input registers request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first register to be read.
Quantity:	The number of registers to be read.

modbus_read_input_registers_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, registers: `ModbusRegisters`)

Generated for a Modbus read input registers response.

C:	The connection.
Headers:	The headers for the modbus function.
Registers:	The register values returned from the device.

modbus_write_single_coil_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, value: `bool`)

Generated for a Modbus write single coil request.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the coil to be written.
Value:	The value to be written to the coil.

modbus_write_single_coil_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, value: `bool`)

Generated for a Modbus write single coil response.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the coil that was written.
Value:	The value that was written to the coil.

modbus_write_single_register_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, value: `count`)

Generated for a Modbus write single register request.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the register to be written.
Value:	The value to be written to the register.

modbus_write_single_register_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, value: `count`)

Generated for a Modbus write single register response.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the register that was written.
Value:	The value that was written to the register.

modbus_write_multiple_coils_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, coils: `ModbusCoils`)

Generated for a Modbus write multiple coils request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first coil to be written.
Coils:	The values to be written to the coils.

modbus_write_multiple_coils_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus write multiple coils response.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first coil that was written.
Quantity:	The quantity of coils that were written.

modbus_write_multiple_registers_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, registers: `ModbusRegisters`)

Generated for a Modbus write multiple registers request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first register to be written.
Registers:	The values to be written to the registers.

modbus_write_multiple_registers_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`, quantity: `count`)

Generated for a Modbus write multiple registers response.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The memory address of the first register that was written.
Quantity:	The quantity of registers that were written.

modbus_read_file_record_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`)

Generated for a Modbus read file record request.

C:	The connection.
Headers:	The headers for the modbus function.

modbus_read_file_record_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`)

Generated for a Modbus read file record response.

C:	The connection.
Headers:	The headers for the modbus function.

modbus_write_file_record_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`)

Generated for a Modbus write file record request.

C:	The connection.
Headers:	The headers for the modbus function.

modbus_write_file_record_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`)

Generated for a Modbus write file record response.

C:	The connection.
Headers:	The headers for the modbus function.

modbus_mask_write_register_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, and_mask: `count`, or_mask: `count`)

Generated for a Modbus mask write register request.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the register where the masks should be applied.
And_mask:	The value of the logical AND mask to apply to the register.
Or_mask:	The value of the logical OR mask to apply to the register.

modbus_mask_write_register_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, address: `count`, and_mask: `count`, or_mask: `count`)

Generated for a Modbus mask write register request.

C:	The connection.
Headers:	The headers for the modbus function.
Address:	The memory address of the register where the masks were applied.
And_mask:	The value of the logical AND mask applied register.
Or_mask:	The value of the logical OR mask applied to the register.

modbus_read_write_multiple_registers_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, read_start_address: `count`, read_quantity: `count`, write_start_address: `count`, write_registers: `ModbusRegisters`)

Generated for a Modbus read/write multiple registers request.

Read_start_address:
C:	The connection.
Headers:	The headers for the modbus function.
	The memory address of the first register to be read.
Read_quantity:	The number of registers to read.
Write_start_address:
	The memory address of the first register to be written.
Write_registers:
	The values to be written to the registers.

modbus_read_write_multiple_registers_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, written_registers: `ModbusRegisters`)

Generated for a Modbus read/write multiple registers response.

Written_registers:
C:	The connection.
Headers:	The headers for the modbus function.
	The register values read from the registers specified in the request.

modbus_read_fifo_queue_request

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, start_address: `count`)

Generated for a Modbus read FIFO queue request.

C:	The connection.
Headers:	The headers for the modbus function.
Start_address:	The address of the FIFO queue to read.

modbus_read_fifo_queue_response

Type:	`event` (c: `connection`, headers: `ModbusHeaders`, fifos: `ModbusRegisters`)

Generated for a Modbus read FIFO queue response.

C:	The connection.
Headers:	The headers for the modbus function.
Fifos:	The register values read from the FIFO queue on the device.

Bro::MySQL

MySQL analyzer

Components

Analyzer::ANALYZER_MYSQL

Events

mysql_command_request

Type:	`event` (c: `connection`, command: `count`, arg: `string`)

Generated for a command request from a MySQL client.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Command:	The numerical code of the command issued.
Arg:	The argument for the command (empty string if not provided).

mysql_error

Type:	`event` (c: `connection`, code: `count`, msg: `string`)

Generated for an unsuccessful MySQL response.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Code:	The error code.
Msg:	Any extra details about the error (empty string if not provided).

mysql_ok

Type:	`event` (c: `connection`, affected_rows: `count`)

Generated for a successful MySQL response.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Affected_rows:	The number of rows that were affected.

mysql_result_row

Type:	`event` (c: `connection`, row: `string_vec`)

Generated for each MySQL ResultsetRow response packet.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Row:	The result row data.

mysql_server_version

Type:	`event` (c: `connection`, ver: `string`)

Generated for the initial server handshake packet, which includes the MySQL server version.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Ver:	The server version string.

mysql_handshake

Type:	`event` (c: `connection`, username: `string`)

Generated for a client handshake response packet, which includes the username the client is attempting to connect as.

See the MySQL documentation for more information about the MySQL protocol.

C:	The connection.
Username:	The username supplied by the client

Bro::NCP

NCP analyzer

Components

Analyzer::ANALYZER_CONTENTS_NCP

Analyzer::ANALYZER_NCP

Options/Constants

NCP::max_frame_size

Type:	`count`
Attributes:	`&redef`
Default:	`65536`

The maximum number of bytes to allocate when parsing NCP frames.

Events

ncp_request

Type:	`event` (c: `connection`, frame_type: `count`, length: `count`, func: `count`)

Generated for NCP requests (Netware Core Protocol).

See Wikipedia for more information about the NCP protocol.

C:	The connection.
Frame_type:	The frame type, as specified by the protocol.
Length:	The length of the request body, excluding the frame header.
Func:	The requested function, as specified by the protocol.

Bro::NetBIOS

NetBIOS analyzer support

Components

Analyzer::ANALYZER_CONTENTS_NETBIOSSSN

Analyzer::ANALYZER_NETBIOSSSN

Events

netbios_session_message

Type:	`event` (c: `connection`, is_orig: `bool`, msg_type: `count`, data_len: `count`)

Generated for all NetBIOS SSN and DGM messages. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Is_orig:	True if the message was sent by the originator of the connection.
Msg_type:	The general type of message, as defined in Section 4.3.1 of RFC 1002.
Data_len:	The length of the message’s payload.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

netbios_session_request

Type:	`event` (c: `connection`, msg: `string`)

Generated for NetBIOS messages of type session request. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

netbios_session_accepted

Type:	`event` (c: `connection`, msg: `string`)

Generated for NetBIOS messages of type positive session response. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

netbios_session_rejected

Type:	`event` (c: `connection`, msg: `string`)

Generated for NetBIOS messages of type negative session response. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

netbios_session_raw_message

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`)

Generated for NetBIOS messages of type session message that are not carrying an SMB payload.

NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Is_orig:	True if the message was sent by the originator of the connection.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header (i.e., the `user_data`).

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

This is an oddly named event. In fact, it’s probably an odd event to have to begin with.

Todo

netbios_session_ret_arg_resp

Type:	`event` (c: `connection`, msg: `string`)

Generated for NetBIOS messages of type retarget response. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

This is an oddly named event.

Todo

netbios_session_keepalive

Type:	`event` (c: `connection`, msg: `string`)

Generated for NetBIOS messages of type keep-alive. Bro’s NetBIOS analyzer processes the NetBIOS session service running on TCP port 139, and (despite its name!) the NetBIOS datagram service on UDP port 138.

See Wikipedia for more information about NetBIOS. RFC 1002 describes the packet format for NetBIOS over TCP/IP, which Bro parses.

C:	The connection, which may be TCP or UDP, depending on the type of the NetBIOS session.
Msg:	The raw payload of the message sent, excluding the common NetBIOS header.

Note

These days, NetBIOS is primarily used as a transport mechanism for SMB/CIFS. Bro’s SMB analyzer parses both SMB-over-NetBIOS and SMB-over-TCP on port 445.

Todo

Functions

decode_netbios_name

Type:	`function` (name: `string`) : `string`

Decode a NetBIOS name. See http://support.microsoft.com/kb/194203.

Name:	The encoded NetBIOS name, e.g., `"FEEIEFCAEOEFFEECEJEPFDCAEOEBENEF"`.
Returns:	The decoded NetBIOS name, e.g., `"THE NETBIOS NAME"`.

Bro::NTLM

NTLM analyzer

Components

Analyzer::ANALYZER_NTLM

Types

NTLM::Negotiate

Type:

record

flags: NTLM::NegotiateFlags: The negotiate flags
domain_name: string &optional: The domain name of the client, if known
workstation: string &optional: The machine name of the client, if known
version: NTLM::Version &optional: The Windows version information, if supplied

NTLM::Challenge

Type:

record

flags: NTLM::NegotiateFlags: The negotiate flags
target_name: string &optional: The server authentication realm. If the server is domain-joined, the name of the domain. Otherwise the server name. See flags.target_type_domain and flags.target_type_server
version: NTLM::Version &optional: The Windows version information, if supplied
target_info: NTLM::AVs &optional: Attribute-value pairs specified by the server

NTLM::Authenticate

Type:

record

flags: NTLM::NegotiateFlags: The negotiate flags
domain_name: string &optional: The domain or computer name hosting the account
user_name: string &optional: The name of the user to be authenticated.
workstation: string &optional: The name of the computer to which the user was logged on.
session_key: string &optional: The session key
version: NTLM::Version &optional: The Windows version information, if supplied

NTLM::NegotiateFlags

Type:

record

negotiate_56: bool: If set, requires 56-bit encryption
negotiate_key_exch: bool: If set, requests an explicit key exchange
negotiate_128: bool: If set, requests 128-bit session key negotiation
negotiate_version: bool: If set, requests the protocol version number
negotiate_target_info: bool: If set, indicates that the TargetInfo fields in the CHALLENGE_MESSAGE are populated
request_non_nt_session_key: bool: If set, requests the usage of the LMOWF function
negotiate_identify: bool: If set, requests and identify level token
negotiate_extended_sessionsecurity: bool: If set, requests usage of NTLM v2 session security Note: NTML v2 session security is actually NTLM v1
target_type_server: bool: If set, TargetName must be a server name
target_type_domain: bool: If set, TargetName must be a domain name
negotiate_always_sign: bool: If set, requests the presence of a signature block on all messages
negotiate_oem_workstation_supplied: bool: If set, the workstation name is provided
negotiate_oem_domain_supplied: bool: If set, the domain name is provided
negotiate_anonymous_connection: bool: If set, the connection should be anonymous
negotiate_ntlm: bool: If set, requests usage of NTLM v1
negotiate_lm_key: bool: If set, requests LAN Manager session key computation
negotiate_datagram: bool: If set, requests connectionless authentication
negotiate_seal: bool: If set, requests session key negotiation for message confidentiality
negotiate_sign: bool: If set, requests session key negotiation for message signatures
request_target: bool: If set, the TargetName field is present
negotiate_oem: bool: If set, requests OEM character set encoding
negotiate_unicode: bool: If set, requests Unicode character set encoding

NTLM::Version

Type:

record

major: count: The major version of the Windows operating system in use
minor: count: The minor version of the Windows operating system in use
build: count: The build number of the Windows operating system in use
ntlmssp: count: The current revision of NTLMSSP in use

NTLM::AVs

Type:

record

nb_computer_name: string: The server’s NetBIOS computer name
nb_domain_name: string: The server’s NetBIOS domain name
dns_computer_name: string &optional: The FQDN of the computer
dns_domain_name: string &optional: The FQDN of the domain
dns_tree_name: string &optional: The FQDN of the forest
constrained_auth: bool &optional: Indicates to the client that the account authentication is constrained
timestamp: time &optional: The associated timestamp, if present
single_host_id: count &optional: Indicates that the client is providing a machine ID created at computer startup to identify the calling machine
target_name: string &optional: The SPN of the target server

Events

ntlm_negotiate

Type:	`event` (c: `connection`, negotiate: `NTLM::Negotiate`)

Generated for NTLM messages of type negotiate.

C:	The connection.
Negotiate:	The parsed data of the NTLM message. See init-bare for more details.

ntlm_challenge

Type:	`event` (c: `connection`, challenge: `NTLM::Challenge`)

Generated for NTLM messages of type challenge.

C:	The connection.
Negotiate:	The parsed data of the NTLM message. See init-bare for more details.

ntlm_authenticate

Type:	`event` (c: `connection`, request: `NTLM::Authenticate`)

Generated for NTLM messages of type authenticate.

C:	The connection.
Request:	The parsed data of the NTLM message. See init-bare for more details.

Bro::NTP

NTP analyzer

Components

Analyzer::ANALYZER_NTP

Events

ntp_message

Type:	`event` (u: `connection`, msg: `ntp_msg`, excess: `string`)

Generated for all NTP messages. Different from many other of Bro’s events, this one is generated for both client-side and server-side messages.

See Wikipedia for more information about the NTP protocol.

U:	The connection record describing the corresponding UDP flow.
Msg:	The parsed NTP message.
Excess:	The raw bytes of any optional parts of the NTP packet. Bro does not further parse any optional fields.

Bro::PIA

Analyzers implementing Dynamic Protocol

Components

Analyzer::ANALYZER_PIA_TCP

Analyzer::ANALYZER_PIA_UDP

Bro::POP3

POP3 analyzer

Components

Analyzer::ANALYZER_POP3

Events

pop3_request

Type:	`event` (c: `connection`, is_orig: `bool`, command: `string`, arg: `string`)

Generated for client-side commands on POP3 connections.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Command:	The command sent.
Arg:	The argument to the command.

Todo

pop3_reply

Type:	`event` (c: `connection`, is_orig: `bool`, cmd: `string`, msg: `string`)

Generated for server-side replies to commands on POP3 connections.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	True if the command was sent by the originator of the TCP connection.
Cmd:	The success indicator sent by the server. This corresponds to the first token on the line sent, and should be either `OK` or `ERR`.
Msg:	The textual description the server sent along with cmd.

Todo

This event is receiving odd parameters, should unify.

Todo

pop3_data

Type:	`event` (c: `connection`, is_orig: `bool`, data: `string`)

Generated for server-side multi-line responses on POP3 connections. POP3 connections use multi-line responses to send bulk data, such as the actual mails. This event is generated once for each line that’s part of such a response.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	True if the data was sent by the originator of the TCP connection.
Data:	The data sent.

Todo

pop3_unexpected

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`, detail: `string`)

Generated for errors encountered on POP3 sessions. If the POP3 analyzer finds state transitions that do not conform to the protocol specification, or other situations it can’t handle, it raises this event.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	True if the data was sent by the originator of the TCP connection.
Msg:	A textual description of the situation.
Detail:	The input that triggered the event.

Todo

pop3_starttls

Type:	`event` (c: `connection`)

Generated when a POP3 connection goes encrypted. While POP3 is by default a clear-text protocol, extensions exist to switch to encryption. This event is generated if that happens and the analyzer then stops processing the connection.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.

Todo

pop3_login_success

Type:	`event` (c: `connection`, is_orig: `bool`, user: `string`, password: `string`)

Generated for successful authentications on POP3 connections.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	Always false.
User:	The user name used for authentication. The event is only generated if a non-empty user name was used.
Password:	The password used for authentication.

Todo

pop3_login_failure

Type:	`event` (c: `connection`, is_orig: `bool`, user: `string`, password: `string`)

Generated for unsuccessful authentications on POP3 connections.

See Wikipedia for more information about the POP3 protocol.

C:	The connection.
Is_orig:	Always false.
User:	The user name attempted for authentication. The event is only generated if a non-empty user name was used.
Password:	The password attempted for authentication.

Todo

Bro::RADIUS

RADIUS analyzer

Components

Analyzer::ANALYZER_RADIUS

Types

RADIUS::AttributeList

Type:	`vector` of `string`

RADIUS::Attributes

Type:	`table` [`count`] of `RADIUS::AttributeList`

RADIUS::Message

Type:

record

code: count: The type of message (Access-Request, Access-Accept, etc.).
trans_id: count: The transaction ID.
authenticator: string: The “authenticator” string.
attributes: RADIUS::Attributes &optional: Any attributes.

Events

radius_message

Type:	`event` (c: `connection`, result: `RADIUS::Message`)

Generated for RADIUS messages.

See Wikipedia for more information about RADIUS.

C:	The connection.
Result:	A record containing fields parsed from a RADIUS packet.

radius_attribute

Type:	`event` (c: `connection`, attr_type: `count`, value: `string`)

Generated for each RADIUS attribute.

See Wikipedia for more information about RADIUS.

C:	The connection.
Attr_type:	The value of the code field (1 == User-Name, 2 == User-Password, etc.).
Value:	The data/value bound to the attribute.

Bro::RDP

RDP analyzer

Components

Analyzer::ANALYZER_RDP

Types

RDP::EarlyCapabilityFlags

Type:

record

support_err_info_pdu: bool

want_32bpp_session: bool

support_statusinfo_pdu: bool

strong_asymmetric_keys: bool

support_monitor_layout_pdu: bool

support_netchar_autodetect: bool

support_dynvc_gfx_protocol: bool

support_dynamic_time_zone: bool

support_heartbeat_pdu: bool

RDP::ClientCoreData

Type:

record

version_major: count

version_minor: count

desktop_width: count

desktop_height: count

color_depth: count

sas_sequence: count

keyboard_layout: count

client_build: count

client_name: string

keyboard_type: count

keyboard_sub: count

keyboard_function_key: count

ime_file_name: string

post_beta2_color_depth: count &optional

client_product_id: string &optional

serial_number: count &optional

high_color_depth: count &optional

supported_color_depths: count &optional

ec_flags: RDP::EarlyCapabilityFlags &optional

dig_product_id: string &optional

Events

rdp_connect_request

Type:	`event` (c: `connection`, cookie: `string`)

Generated for X.224 client requests.

C:	The connection record for the underlying transport-layer session/flow.
Cookie:	The cookie included in the request.

rdp_negotiation_response

Type:	`event` (c: `connection`, security_protocol: `count`)

Generated for RDP Negotiation Response messages.

Security_protocol:
C:	The connection record for the underlying transport-layer session/flow.
	The security protocol selected by the server.

rdp_negotiation_failure

Type:	`event` (c: `connection`, failure_code: `count`)

Generated for RDP Negotiation Failure messages.

C:	The connection record for the underlying transport-layer session/flow.
Failure_code:	The failure code sent by the server.

rdp_client_core_data

Type:	`event` (c: `connection`, data: `RDP::ClientCoreData`)

Generated for MCS client requests.

C:	The connection record for the underlying transport-layer session/flow.
Data:	The data contained in the client core data structure.

rdp_gcc_server_create_response

Type:	`event` (c: `connection`, result: `count`)

Generated for MCS server responses.

C:	The connection record for the underlying transport-layer session/flow.
Result:	The 8-bit integer representing the GCC Conference Create Response result.

rdp_server_security

Type:	`event` (c: `connection`, encryption_method: `count`, encryption_level: `count`)

Generated for MCS server responses.

Encryption_method:
C:	The connection record for the underlying transport-layer session/flow.
	The 32-bit integer representing the encryption method used in the connection.
Encryption_level:
	The 32-bit integer representing the encryption level used in the connection.

rdp_server_certificate

Type:	`event` (c: `connection`, cert_type: `count`, permanently_issued: `bool`)

Generated for a server certificate section. If multiple X.509 certificates are included in chain, this event will still only be generated a single time.

Permanently_issued:
C:	The connection record for the underlying transport-layer session/flow.
Cert_type:	Indicates the type of certificate.
	Value will be true is the certificate(s) is permanent on the server.

rdp_begin_encryption

Type:	`event` (c: `connection`, security_protocol: `count`)

Generated when an RDP session becomes encrypted.

Security_protocol:
C:	The connection record for the underlying transport-layer session/flow.
	The security protocol being used for the session.

Bro::RFB

Parser for rfb (VNC) analyzer

Components

Analyzer::ANALYZER_RFB

Events

rfb_event

Type:	`event` (c: `connection`)

Generated for RFB event

C:	The connection record for the underlying transport-layer session/flow.

rfb_authentication_type

Type:	`event` (c: `connection`, authtype: `count`)

Generated for RFB event authentication mechanism selection

C:	The connection record for the underlying transport-layer session/flow.
Authtype:	the value of the chosen authentication mechanism

rfb_auth_result

Type:	`event` (c: `connection`, result: `bool`)

Generated for RFB event authentication result message

C:	The connection record for the underlying transport-layer session/flow.
Result:	whether or not authentication was succesful

rfb_share_flag

Type:	`event` (c: `connection`, flag: `bool`)

Generated for RFB event share flag messages

C:	The connection record for the underlying transport-layer session/flow.
Flag:	whether or not the share flag was set

rfb_client_version

Type:	`event` (c: `connection`, major_version: `string`, minor_version: `string`)

Generated for RFB event client banner message

C:	The connection record for the underlying transport-layer session/flow.
Version:	of the client’s rfb library

rfb_server_version

Type:	`event` (c: `connection`, major_version: `string`, minor_version: `string`)

Generated for RFB event server banner message

C:	The connection record for the underlying transport-layer session/flow.
Version:	of the server’s rfb library

rfb_server_parameters

Type:	`event` (c: `connection`, name: `string`, width: `count`, height: `count`)

Generated for RFB event server parameter message

C:	The connection record for the underlying transport-layer session/flow.
Name:	name of the shared screen
Width:	width of the shared screen
Height:	height of the shared screen

Bro::RPC

Analyzers for RPC-based protocols

Components

Analyzer::ANALYZER_CONTENTS_NFS

Analyzer::ANALYZER_CONTENTS_RPC

Analyzer::ANALYZER_NFS

Analyzer::ANALYZER_PORTMAPPER

Events

nfs_proc_null

Type:	`event` (c: `connection`, info: `NFS3::info_t`)

Generated for NFSv3 request/reply dialogues of type null. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.

Todo

nfs_proc_getattr

Type:	`event` (c: `connection`, info: `NFS3::info_t`, fh: `string`, attrs: `NFS3::fattr_t`)

Generated for NFSv3 request/reply dialogues of type getattr. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Fh:	TODO.
Attrs:	The attributes returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_lookup

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::diropargs_t`, rep: `NFS3::lookup_reply_t`)

Generated for NFSv3 request/reply dialogues of type lookup. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	The arguments passed in the request.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_read

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::readargs_t`, rep: `NFS3::read_reply_t`)

Generated for NFSv3 request/reply dialogues of type read. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	The arguments passed in the request.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_readlink

Type:	`event` (c: `connection`, info: `NFS3::info_t`, fh: `string`, rep: `NFS3::readlink_reply_t`)

Generated for NFSv3 request/reply dialogues of type readlink. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Fh:	The file handle passed in the request.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_write

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::writeargs_t`, rep: `NFS3::write_reply_t`)

Generated for NFSv3 request/reply dialogues of type write. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_create

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::diropargs_t`, rep: `NFS3::newobj_reply_t`)

Generated for NFSv3 request/reply dialogues of type create. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_mkdir

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::diropargs_t`, rep: `NFS3::newobj_reply_t`)

Generated for NFSv3 request/reply dialogues of type mkdir. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_remove

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::diropargs_t`, rep: `NFS3::delobj_reply_t`)

Generated for NFSv3 request/reply dialogues of type remove. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_rmdir

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::diropargs_t`, rep: `NFS3::delobj_reply_t`)

Generated for NFSv3 request/reply dialogues of type rmdir. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_readdir

Type:	`event` (c: `connection`, info: `NFS3::info_t`, req: `NFS3::readdirargs_t`, rep: `NFS3::readdir_reply_t`)

Generated for NFSv3 request/reply dialogues of type readdir. The event is generated once we have either seen both the request and its corresponding reply, or an unanswered request has timed out.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Req:	TODO.
Rep:	The response returned in the reply. The values may not be valid if the request was unsuccessful.

Todo

nfs_proc_not_implemented

Type:	`event` (c: `connection`, info: `NFS3::info_t`, proc: `NFS3::proc_t`)

Generated for NFSv3 request/reply dialogues of a type that Bro’s NFSv3 analyzer does not implement.

NFS is a service running on top of RPC. See Wikipedia for more information about the service.

C:	The RPC connection.
Info:	Reports the status of the dialogue, along with some meta information.
Proc:	The procedure called that Bro does not implement.

Todo

nfs_reply_status

Type:	`event` (n: `connection`, info: `NFS3::info_t`)

Generated for each NFSv3 reply message received, reporting just the status included.

N:	The connection.
Info:	Reports the status included in the reply.

Todo

pm_request_null

Type:	`event` (r: `connection`)

Generated for Portmapper requests of type null.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.

Todo

pm_request_set

Type:	`event` (r: `connection`, m: `pm_mapping`, success: `bool`)

Generated for Portmapper request/reply dialogues of type set.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
M:	The argument to the request.
Success:	True if the request was successful, according to the corresponding reply. If no reply was seen, this will be false once the request times out.

Todo

pm_request_unset

Type:	`event` (r: `connection`, m: `pm_mapping`, success: `bool`)

Generated for Portmapper request/reply dialogues of type unset.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
M:	The argument to the request.
Success:	True if the request was successful, according to the corresponding reply. If no reply was seen, this will be false once the request times out.

Todo

pm_request_getport

Type:	`event` (r: `connection`, pr: `pm_port_request`, p: `port`)

Generated for Portmapper request/reply dialogues of type getport.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Pr:	The argument to the request.
P:	The port returned by the server.

Todo

pm_request_dump

Type:	`event` (r: `connection`, m: `pm_mappings`)

Generated for Portmapper request/reply dialogues of type dump.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
M:	The mappings returned by the server.

Todo

pm_request_callit

Type:	`event` (r: `connection`, call: `pm_callit_request`, p: `port`)

Generated for Portmapper request/reply dialogues of type callit.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Call:	The argument to the request.
P:	The port value returned by the call.

Todo

pm_attempt_null

Type:	`event` (r: `connection`, status: `rpc_status`)

Generated for failed Portmapper requests of type null.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.

Todo

pm_attempt_set

Type:	`event` (r: `connection`, status: `rpc_status`, m: `pm_mapping`)

Generated for failed Portmapper requests of type set.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
M:	The argument to the original request.

Todo

pm_attempt_unset

Type:	`event` (r: `connection`, status: `rpc_status`, m: `pm_mapping`)

Generated for failed Portmapper requests of type unset.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
M:	The argument to the original request.

Todo

pm_attempt_getport

Type:	`event` (r: `connection`, status: `rpc_status`, pr: `pm_port_request`)

Generated for failed Portmapper requests of type getport.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
Pr:	The argument to the original request.

Todo

pm_attempt_dump

Type:	`event` (r: `connection`, status: `rpc_status`)

Generated for failed Portmapper requests of type dump.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.

Todo

pm_attempt_callit

Type:	`event` (r: `connection`, status: `rpc_status`, call: `pm_callit_request`)

Generated for failed Portmapper requests of type callit.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
Call:	The argument to the original request.

Todo

pm_bad_port

Type:	`event` (r: `connection`, bad_p: `count`)

Generated for Portmapper requests or replies that include an invalid port number. Since ports are represented by unsigned 4-byte integers, they can stray outside the allowed range of 0–65535 by being >= 65536. If so, this event is generated.

Portmapper is a service running on top of RPC. See Wikipedia for more information about the service.

R:	The RPC connection.
Bad_p:	The invalid port value.

Todo

rpc_dialogue

Type:	`event` (c: `connection`, prog: `count`, ver: `count`, proc: `count`, status: `rpc_status`, start_time: `time`, call_len: `count`, reply_len: `count`)

Generated for RPC request/reply pairs. The RPC analyzer associates request and reply by their transaction identifiers and raises this event once both have been seen. If there’s not a reply, this event will still be generated eventually on timeout. In that case, status will be set to RPC_TIMEOUT.

See Wikipedia for more information about the ONC RPC protocol.

C:	The connection.
Prog:	The remote program to call.
Ver:	The version of the remote program to call.
Proc:	The procedure of the remote program to call.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
Start_time:	The time when the call was seen.
Call_len:	The size of the call_body PDU.
Reply_len:	The size of the reply_body PDU.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

rpc_call

Type:	`event` (c: `connection`, xid: `count`, prog: `count`, ver: `count`, proc: `count`, call_len: `count`)

Generated for RPC call messages.

See Wikipedia for more information about the ONC RPC protocol.

C:	The connection.
Xid:	The transaction identifier allowing to match requests with replies.
Prog:	The remote program to call.
Ver:	The version of the remote program to call.
Proc:	The procedure of the remote program to call.
Call_len:	The size of the call_body PDU.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

rpc_reply

Type:	`event` (c: `connection`, xid: `count`, status: `rpc_status`, reply_len: `count`)

Generated for RPC reply messages.

See Wikipedia for more information about the ONC RPC protocol.

C:	The connection.
Xid:	The transaction identifier allowing to match requests with replies.
Status:	The status of the reply, which should be one of the index values of `RPC_status`.
Reply_len:	The size of the reply_body PDU.

Todo

Bro’s current default configuration does not activate the protocol analyzer that generates this event; the corresponding script has not yet been ported to Bro 2.x. To still enable this event, one needs to add a call to Analyzer::register_for_ports or a DPD payload signature.

Bro::SIP

SIP analyzer UDP-only

Components

Analyzer::ANALYZER_SIP

Events

sip_request

Type:	`event` (c: `connection`, method: `string`, original_URI: `string`, version: `string`)

Generated for SIP requests, used in Voice over IP (VoIP).

This event is generated as soon as a request’s initial line has been parsed.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Method:	The SIP method extracted from the request (e.g., `REGISTER`, `NOTIFY`).
Original_URI:	The unprocessed URI as specified in the request.
Version:	The version number specified in the request (e.g., `2.0`).

sip_reply

Type:	`event` (c: `connection`, version: `string`, code: `count`, reason: `string`)

Generated for SIP replies, used in Voice over IP (VoIP).

This event is generated as soon as a reply’s initial line has been parsed.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Version:	The SIP version in use.
Code:	The response code.
Reason:	Textual details for the response code.

sip_header

Type:	`event` (c: `connection`, is_orig: `bool`, name: `string`, value: `string`)

Generated for each SIP header.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Is_orig:	Whether the header came from the originator.
Name:	Header name.
Value:	Header value.

sip_all_headers

Type:	`event` (c: `connection`, is_orig: `bool`, hlist: `mime_header_list`)

Generated once for all SIP headers from the originator or responder.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Is_orig:	Whether the headers came from the originator.
Hlist:	All the headers, and their values

sip_begin_entity

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated at the beginning of a SIP message.

This event is generated as soon as a message’s initial line has been parsed.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Is_orig:	Whether the message came from the originator.

sip_end_entity

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated at the end of a SIP message.

See Wikipedia for more information about the SIP protocol.

C:	The connection.
Is_orig:	Whether the message came from the originator.

Bro::SMB

SMB analyzer

Components

Analyzer::ANALYZER_CONTENTS_SMB

Analyzer::ANALYZER_SMB

Options/Constants

SMB::pipe_filenames

Type:	`set` [`string`]
Attributes:	`&redef`
Default:

{
   "lsarpc",
   "samr",
   "MsFteWds",
   "spoolss",
   "winreg",
   "srvsvc",
   "netdfs",
   "wkssvc"
}

A set of file names used as named pipes over SMB. This only comes into play as a heuristic to identify named pipes when the drive mapping wasn’t seen by Bro.

Types

SMB1::NegotiateResponse

Type:

record

core: SMB1::NegotiateResponseCore &optional: If the server does not understand any of the dialect strings, or if PC NETWORK PROGRAM 1.0 is the chosen dialect.
lanman: SMB1::NegotiateResponseLANMAN &optional: If the chosen dialect is greater than core up to and including LANMAN 2.1.
ntlm: SMB1::NegotiateResponseNTLM &optional: If the chosen dialect is NT LM 0.12.

SMB1::NegotiateResponseCore

Type:

record

dialect_index: count: Index of selected dialect

SMB1::NegotiateResponseLANMAN

Type:

record

word_count: count: Count of parameter words (should be 13)
dialect_index: count: Index of selected dialect
security_mode: SMB1::NegotiateResponseSecurity: Security mode
max_buffer_size: count: Max transmit buffer size (>= 1024)
max_mpx_count: count: Max pending multiplexed requests
max_number_vcs: count: Max number of virtual circuits (VCs - transport-layer connections) between client and server
raw_mode: SMB1::NegotiateRawMode: Raw mode
session_key: count: Unique token identifying this session
server_time: time: Current date and time at server
encryption_key: string: The challenge encryption key
primary_domain: string: The server’s primary domain

SMB1::NegotiateResponseNTLM

Type:

record

word_count: count: Count of parameter words (should be 17)
dialect_index: count: Index of selected dialect
security_mode: SMB1::NegotiateResponseSecurity: Security mode
max_buffer_size: count: Max transmit buffer size
max_mpx_count: count: Max pending multiplexed requests
max_number_vcs: count: Max number of virtual circuits (VCs - transport-layer connections) between client and server
max_raw_size: count: Max raw buffer size
session_key: count: Unique token identifying this session
capabilities: SMB1::NegotiateCapabilities: Server capabilities
server_time: time: Current date and time at server
encryption_key: string &optional: The challenge encryption key. Present only for non-extended security (i.e. capabilities$extended_security = F)
domain_name: string &optional: The name of the domain. Present only for non-extended security (i.e. capabilities$extended_security = F)
guid: string &optional: A globally unique identifier assigned to the server. Present only for extended security (i.e. capabilities$extended_security = T)
security_blob: string: Opaque security blob associated with the security package if capabilities$extended_security = T Otherwise, the challenge for challenge/response authentication.

SMB1::NegotiateResponseSecurity

Type:

record

user_level: bool: This indicates whether the server, as a whole, is operating under Share Level or User Level security.
challenge_response: bool: This indicates whether or not the server supports Challenge/Response authentication. If the bit is false, then plaintext passwords must be used.
signatures_enabled: bool &optional: This indicates if the server is capable of performing MAC message signing. Note: Requires NT LM 0.12 or later.
signatures_required: bool &optional: This indicates if the server is requiring the use of a MAC in each packet. If false, message signing is optional. Note: Requires NT LM 0.12 or later.

SMB1::NegotiateRawMode

Type:

record

read_raw: bool: Read raw supported
write_raw: bool: Write raw supported

SMB1::NegotiateCapabilities

Type:

record

raw_mode: bool: The server supports SMB_COM_READ_RAW and SMB_COM_WRITE_RAW
mpx_mode: bool: The server supports SMB_COM_READ_MPX and SMB_COM_WRITE_MPX
unicode: bool: The server supports unicode strings
large_files: bool: The server supports large files with 64 bit offsets
nt_smbs: bool: The server supports the SMBs particilar to the NT LM 0.12 dialect. Implies nt_find.
rpc_remote_apis: bool: The server supports remote admin API requests via DCE-RPC
status32: bool: The server can respond with 32 bit status codes in Status.Status
level_2_oplocks: bool: The server supports level 2 oplocks
lock_and_read: bool: The server supports SMB_COM_LOCK_AND_READ
nt_find: bool: Reserved
dfs: bool: The server is DFS aware
infolevel_passthru: bool: The server supports NT information level requests passing through
large_readx: bool: The server supports large SMB_COM_READ_ANDX (up to 64k)
large_writex: bool: The server supports large SMB_COM_WRITE_ANDX (up to 64k)
unix: bool: The server supports CIFS Extensions for UNIX
bulk_transfer: bool: The server supports SMB_BULK_READ, SMB_BULK_WRITE Note: No known implementations support this
compressed_data: bool: The server supports compressed data transfer. Requires bulk_transfer. Note: No known implementations support this
extended_security: bool: The server supports extended security exchanges

SMB1::SessionSetupAndXRequest

Type:

record

word_count: count

Count of parameter words

10 for pre NT LM 0.12
12 for NT LM 0.12 with extended security
13 for NT LM 0.12 without extended security

max_buffer_size: count

Client maximum buffer size

max_mpx_count: count

Actual maximum multiplexed pending request

vc_number: count

Virtual circuit number. First VC == 0

session_key: count

Session key (valid iff vc_number > 0)

native_os: string

Client’s native operating system

native_lanman: string

Client’s native LAN Manager type

account_name: string &optional

Account name Note: not set for NT LM 0.12 with extended security

account_password: string &optional

If challenge/response auth is not being used, this is the password. Otherwise, it’s the response to the server’s challenge. Note: Only set for pre NT LM 0.12

primary_domain: string &optional

Client’s primary domain, if known Note: not set for NT LM 0.12 with extended security

case_insensitive_password: string &optional

Case insensitive password Note: only set for NT LM 0.12 without extended security

case_sensitive_password: string &optional

Case sensitive password Note: only set for NT LM 0.12 without extended security

security_blob: string &optional

Security blob Note: only set for NT LM 0.12 with extended security

capabilities: SMB1::SessionSetupAndXCapabilities &optional

Client capabilities Note: only set for NT LM 0.12

SMB1::SessionSetupAndXResponse

Type:

record

word_count: count: Count of parameter words (should be 3 for pre NT LM 0.12 and 4 for NT LM 0.12)
is_guest: bool &optional: Were we logged in as a guest user?
native_os: string &optional: Server’s native operating system
native_lanman: string &optional: Server’s native LAN Manager type
primary_domain: string &optional: Server’s primary domain
security_blob: string &optional: Security blob if NTLM

SMB1::SessionSetupAndXCapabilities

Type:

record

unicode: bool: The client can use unicode strings
large_files: bool: The client can deal with files having 64 bit offsets
nt_smbs: bool: The client understands the SMBs introduced with NT LM 0.12 Implies nt_find
status32: bool: The client can receive 32 bit errors encoded in Status.Status
level_2_oplocks: bool: The client understands Level II oplocks
nt_find: bool: Reserved. Implied by nt_smbs.

SMB1::Find_First2_Request_Args

Type:

record

search_attrs: count: File attributes to apply as a constraint to the search
search_count: count: Max search results
flags: count: Misc. flags for how the server should manage the transaction once results are returned
info_level: count: How detailed the information returned in the results should be
search_storage_type: count: Specify whether to search for directories or files
file_name: string: The string to serch for (note: may contain wildcards)

SMB1::Find_First2_Response_Args

Type:

record

sid: count: The server generated search identifier
search_count: count: Number of results returned by the search
end_of_search: bool: Whether or not the search can be continued using the TRANS2_FIND_NEXT2 transaction
ext_attr_error: string &optional: An extended attribute name that couldn’t be retrieved

SMB2::CloseResponse

Type:

record

alloc_size: count: The size, in bytes of the data that is allocated to the file.
eof: count: The size, in bytes, of the file.
times: SMB::MACTimes: The creation, last access, last write, and change times.
attrs: SMB2::FileAttrs: The attributes of the file.

The response to an SMB2 close request, which is used by the client to close an instance of a file that was opened previously.

For more information, see MS-SMB2:2.2.16

Events

smb1_check_directory_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, directory_name: `string`)

Generated for SMB/CIFS version 1 requests of type check directory. This is used by the client to verify that a specified path resolves to a valid directory on the server.

For more information, see MS-CIFS:2.2.4.17

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Directory_name:	The directory name to check for existence.

smb1_check_directory_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`)

Generated for SMB/CIFS version 1 responses of type check directory. This is the server response to the check directory request.

For more information, see MS-CIFS:2.2.4.17

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.

smb1_close_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_id: `count`)

Generated for SMB/CIFS version 1 requests of type close. This is used by the client to close an instance of an object associated with a valid file ID.

For more information, see MS-CIFS:2.2.4.5

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
File_id:	The file identifier being closed.

See also: smb1_message

smb1_create_directory_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, directory_name: `string`)

Generated for SMB/CIFS version 1 requests of type create directory. This is a deprecated command which has been replaced by the trans2_create_directory subcommand. This is used by the client to create a new directory on the server, relative to a connected share.

For more information, see MS-CIFS:2.2.4.1

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Directory_name:	The name of the directory to create.

smb1_create_directory_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`)

Generated for SMB/CIFS version 1 responses of type create directory. This is a deprecated command which has been replaced by the trans2_create_directory subcommand. This is the server response to the create directory request.

For more information, see MS-CIFS:2.2.4.1

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.

smb1_echo_request

Type:	`event` (c: `connection`, echo_count: `count`, data: `string`)

Generated for SMB/CIFS version 1 requests of type echo. This is sent by the client to test the transport layer connection with the server.

For more information, see MS-CIFS:2.2.4.39

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Echo_count:	The number of times the server should echo the data back.
Data:	The data for the server to echo.

smb1_echo_response

Type:	`event` (c: `connection`, seq_num: `count`, data: `string`)

Generated for SMB/CIFS version 1 responses of type echo. This is the server response to the echo request.

For more information, see MS-CIFS:2.2.4.39

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Seq_num:	The sequence number of this echo reply.
Data:	The data echoed back from the client.

smb1_logoff_andx

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated for SMB/CIFS version 1 requests of type logoff andx. This is used by the client to logoff the user connection represented by UID in the SMB Header. The server releases all locks and closes all files currently open by this user, disconnects all tree connects, cancels any outstanding requests for this UID, and invalidates the UID.

For more information, see MS-CIFS:2.2.4.54

C:	The connection.
Is_orig:	Indicates which host sent the logoff message.

See also: smb1_message

smb1_negotiate_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, dialects: `string_vec`)

Generated for SMB/CIFS version 1 requests of type negotiate. This is sent by the client to initiate an SMB connection between the client and the server. A negotiate exchange MUST be completed before any other SMB messages are sent to the server.

For more information, see MS-CIFS:2.2.4.52

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Dialects:	The SMB dialects supported by the client.

smb1_negotiate_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, response: `SMB1::NegotiateResponse`)

Generated for SMB/CIFS version 1 responses of type negotiate. This is the server response to the negotiate request.

For more information, see MS-CIFS:2.2.4.52

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Response:	A record structure containing more information from the response.

smb1_nt_create_andx_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_name: `string`)

Generated for SMB/CIFS version 1 requests of type nt create andx. This is sent by the client to create and open a new file, or to open an existing file, or to open and truncate an existing file to zero length, or to create a directory, or to create a connection to a named pipe.

For more information, see MS-CIFS:2.2.4.64

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Name:	The `name` attribute specified in the message.

smb1_nt_create_andx_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_id: `count`, file_size: `count`, times: `SMB::MACTimes`)

Generated for SMB/CIFS version 1 responses of type nt create andx. This is the server response to the nt create andx request.

For more information, see MS-CIFS:2.2.4.64

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
File_id:	The SMB2 GUID for the file.
File_size:	Size of the file.
Times:	Timestamps associated with the file in question.

smb1_nt_cancel_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`)

Generated for SMB/CIFS version 1 requests of type nt cancel. This is sent by the client to request that a currently pending request be cancelled.

For more information, see MS-CIFS:2.2.4.65

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.

See also: smb1_message

smb1_query_information_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, filename: `string`)

Generated for SMB/CIFS version 1 requests of type query information. This is a deprecated command which has been replaced by the trans2_query_path_information subcommand. This is used by the client to obtain attribute information about a file.

For more information, see MS-CIFS:2.2.4.9

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Filename:	The filename that the client is querying.

smb1_read_andx_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_id: `count`, offset: `count`, length: `count`)

Generated for SMB/CIFS version 1 requests of type read andx. This is sent by the client to read bytes from a regular file, a named pipe, or a directly accessible device such as a serial port (COM) or printer port (LPT).

For more information, see MS-CIFS:2.2.4.42

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
File_id:	The file identifier being written to.
Offset:	The byte offset the requested read begins at.
Length:	The number of bytes being requested.

smb1_read_andx_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, data_len: `count`)

Generated for SMB/CIFS version 1 responses of type read andx. This is the server response to the read andx request.

For more information, see MS-CIFS:2.2.4.42

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Data_len:	The length of data from the requested file.

smb1_session_setup_andx_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, request: `SMB1::SessionSetupAndXRequest`)

Generated for SMB/CIFS version 1 requests of type setup andx. This is sent by the client to configure an SMB session.

For more information, see MS-CIFS:2.2.4.53

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Request:	The parsed request data of the SMB message. See init-bare for more details.

smb1_session_setup_andx_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, response: `SMB1::SessionSetupAndXResponse`)

Generated for SMB/CIFS version 1 responses of type setup andx. This is the server response to the setup andx request.

For more information, see MS-CIFS:2.2.4.53

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Response:	The parsed response data of the SMB message. See init-bare for more details.

smb1_transaction_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, name: `string`, sub_cmd: `count`)

Generated for SMB/CIFS version 1 requests of type transaction. This command serves as the transport for the Transaction Subprotocol Commands. These commands operate on mailslots and named pipes, which are interprocess communication endpoints within the CIFS file system.

For more information, see MS-CIFS:2.2.4.33

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Name:	A name string that MAY identify the resource (a specific Mailslot or Named Pipe) against which the operation is performed.
Sub_cmd:	The sub command, some may be parsed and have their own events.

smb1_transaction2_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, sub_cmd: `count`)

Generated for SMB/CIFS version 1 requests of type transaction2. This command serves as the transport for the Transaction2 Subprotocol Commands. These commands operate on mailslots and named pipes, which are interprocess communication endpoints within the CIFS file system. Compared to the Transaction Subprotocol Commands, these commands allow clients to set and retrieve Extended Attribute key/value pairs, make use of long file names (longer than the original 8.3 format names), and perform directory searches, among other tasks.

For more information, see MS-CIFS:2.2.4.46

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Sub_cmd:	The sub command, some are parsed and have their own events.

smb1_trans2_find_first2_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, args: `SMB1::Find_First2_Request_Args`)

Generated for SMB/CIFS version 1 transaction2 requests of subtype find first2. This transaction is used to begin a search for file(s) within a directory or for a directory

For more information, see MS-CIFS:2.2.6.2

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Args:	A record data structure with arguments given to the command.

smb1_trans2_query_path_info_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_name: `string`)

Generated for SMB/CIFS version 1 transaction2 requests of subtype query path info. This transaction is used to get information about a specific file or directory.

For more information, see MS-CIFS:2.2.6.6

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
File_name:	File name the request is in reference to.

smb1_trans2_get_dfs_referral_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_name: `string`)

Generated for SMB/CIFS version 1 transaction2 requests of subtype get DFS referral. This transaction is used to request a referral for a disk object in DFS.

For more information, see MS-CIFS:2.2.6.16

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
File_name:	File name the request is in reference to.

smb1_tree_connect_andx_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, path: `string`, service: `string`)

Generated for SMB/CIFS version 1 requests of type tree connect andx. This is sent by the client to establish a connection to a server share.

For more information, see MS-CIFS:2.2.4.55

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Path:	The `path` attribute specified in the message.
Service:	The `service` attribute specified in the message.

smb1_tree_connect_andx_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, service: `string`, native_file_system: `string`)

Generated for SMB/CIFS version 1 responses of type tree connect andx. This is the server reply to the tree connect andx request.

For more information, see MS-CIFS:2.2.4.55

Native_file_system:
C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Service:	The `service` attribute specified in the message.
	The file system of the remote server as indicate by the server.

smb1_tree_disconnect

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, is_orig: `bool`)

Generated for SMB/CIFS version 1 requests of type tree disconnect. This is sent by the client to logically disconnect client access to a server resource.

For more information, see MS-CIFS:2.2.4.51

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Is_orig:	True if the message was from the originator.

See also: smb1_message

smb1_write_andx_request

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, file_id: `count`, offset: `count`, data_len: `count`)

Generated for SMB/CIFS version 1 requests of type write andx. This is sent by the client to write bytes to a regular file, a named pipe, or a directly accessible I/O device such as a serial port (COM) or printer port (LPT).

For more information, see MS-CIFS:2.2.4.43

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Offset:	The byte offset into the referenced file data is being written.
Data:	The data being written.

smb1_write_andx_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, written_bytes: `count`)

Generated for SMB/CIFS version 1 responses of type write andx. This is the server response to the write andx request.

For more information, see MS-CIFS:2.2.4.43

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Written_bytes:	The number of bytes the server reported having actually written.

smb1_message

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, is_orig: `bool`)

Generated for all SMB/CIFS version 1 messages.

See Wikipedia for more information about the SMB/CIFS protocol. Bro’s SMB/CIFS analyzer parses both SMB-over-NetBIOS on ports 138/139 and SMB-over-TCP on port 445.

C:	The connection.
Hdr:	The parsed header of the SMB version 1 message.
Is_orig:	True if the message was sent by the originator of the underlying transport-level connection.

See also: smb2_message

smb1_empty_response

Type:	`event` (c: `connection`, hdr: `SMB1::Header`)

Generated when there is an SMB version 1 response with no message body.

C:	The connection.
Hdr:	The parsed header of the SMB message.

See also: smb1_message

smb1_error

Type:	`event` (c: `connection`, hdr: `SMB1::Header`, is_orig: `bool`)

Generated for SMB version 1 messages that indicate an error. This event is triggered by an SMB header including a status that signals an error.

C:	The connection.
Hdr:	The parsed header of the SMB message.
Is_orig:	True if the message was sent by the originator of the underlying transport-level connection.

See also: smb1_message

smb2_close_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`)

Generated for SMB/CIFS version 2 requests of type close. This is used by the client to close an instance of a file that was opened previously with a successful SMB2 CREATE Request.

For more information, see MS-SMB2:2.2.15

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_name:	The SMB2 GUID of the file being closed.

smb2_close_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, response: `SMB2::CloseResponse`)

Generated for SMB/CIFS version 2 responses of type close. This is sent by the server to indicate that an SMB2 CLOSE request was processed successfully.

For more information, see MS-SMB2:2.2.16

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Response:	A record of attributes returned from the server from the close.

smb2_create_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_name: `string`)

Generated for SMB/CIFS version 2 requests of type create. This is sent by the client to request either creation of or access to a file.

For more information, see MS-SMB2:2.2.13

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_name:	The name of the file being requested.

smb2_create_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`, size: `count`, times: `SMB::MACTimes`, attrs: `SMB2::FileAttrs`)

Generated for SMB/CIFS version 2 responses of type create. This is sent by the server to notify the client of the status of its SMB2 CREATE request.

For more information, see MS-SMB2:2.2.14

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_id:	The SMB2 GUID for the file.
Size:	Size of the file.
Times:	Timestamps associated with the file in question.
Attrs:	File attributes.

smb2_negotiate_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, dialects: `index_vec`)

Generated for SMB/CIFS version 2 requests of type negotiate. This is used by the client to notify the server what dialects of the SMB2 Protocol the client understands.

For more information, see MS-SMB2:2.2.3

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Dialects:	A vector of the client’s supported dialects.

smb2_negotiate_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, response: `SMB2::NegotiateResponse`)

Generated for SMB/CIFS version 2 responses of type negotiate. This is sent by the server to notify the client of the preferred common dialect.

For more information, see MS-SMB2:2.2.4

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Response:	The negotiate response data structure.

smb2_read_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`, offset: `count`, length: `count`)

Generated for SMB/CIFS version 2 requests of type read. This is sent by the client to request a read operation on the specified file.

For more information, see MS-SMB2:2.2.19

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_id:	The GUID being used for the file.
Offset:	How far into the file this read should be taking place.
Length:	The number of bytes of the file being read.

See also: smb2_message

smb2_session_setup_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, request: `SMB2::SessionSetupRequest`)

Generated for SMB/CIFS version 2 requests of type session_setup. This is sent by the client to request a new authenticated session within a new or existing SMB 2 Protocol transport connection to the server.

For more information, see MS-SMB2:2.2.5

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Request:	A record containing more information related to the request.

smb2_session_setup_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, response: `SMB2::SessionSetupResponse`)

Generated for SMB/CIFS version 2 responses of type session_setup. This is sent by the server in response to a session_setup request.

For more information, see MS-SMB2:2.2.6

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Response:	A record containing more information related to the response.

smb2_file_rename

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`, dst_filename: `string`)

Generated for SMB/CIFS version 2 requests of type set_info of the rename subtype.

For more information, see MS-SMB2:2.2.39

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_id:	A GUID to identify the file.
Dst_filename:	The filename to rename the file into.

smb2_file_delete

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`, delete_pending: `bool`)

Generated for SMB/CIFS version 2 requests of type set_info of the delete subtype.

For more information, see MS-SMB2:2.2.39

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Delete_pending:	A boolean value to indicate that a file should be deleted when it’s closed if set to T.

smb2_tree_connect_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, path: `string`)

Generated for SMB/CIFS version 2 requests of type tree_connect. This is sent by a client to request access to a particular share on the server.

For more information, see MS-SMB2:2.2.9

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Path:	Path of the requested tree.

smb2_tree_connect_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, response: `SMB2::TreeConnectResponse`)

Generated for SMB/CIFS version 2 responses of type tree_connect. This is sent by the server when a tree_connect request is successfully processed by the server.

For more information, see MS-SMB2:2.2.10

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Response:	A record with more information related to the response.

smb2_tree_disconnect_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`)

Generated for SMB/CIFS version 2 requests of type tree disconnect. This is sent by the client to logically disconnect client access to a server resource.

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.

See also: smb2_message

smb2_tree_disconnect_response

Type:	`event` (c: `connection`, hdr: `SMB2::Header`)

Generated for SMB/CIFS version 2 requests of type tree disconnect. This is sent by the server to logically disconnect client access to a server resource.

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.

See also: smb2_message

smb2_write_request

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, file_id: `SMB2::GUID`, offset: `count`, length: `count`)

Generated for SMB/CIFS version 2 requests of type write. This is sent by the client to write data to the file or named pipe on the server.

For more information, see MS-SMB2:2.2.21

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
File_id:	The GUID being used for the file.
Offset:	How far into the file this write should be taking place.
Length:	The number of bytes of the file being written.

See also: smb2_message

smb2_message

Type:	`event` (c: `connection`, hdr: `SMB2::Header`, is_orig: `bool`)

Generated for SMB/CIFS version 2 messages.

See Wikipedia for more information about the SMB/CIFS protocol. Bro’s SMB/CIFS analyzer parses both SMB-over-NetBIOS on ports 138/139 and SMB-over-TCP on port 445.

C:	The connection.
Hdr:	The parsed header of the SMB version 2 message.
Is_orig:	True if the message came from the originator side.

See also: smb1_message

smb_pipe_connect_heuristic

Type:	`event` (c: `connection`)

Generated for SMB connections when a named pipe has been detected heuristically. The case when this comes up is when the drive mapping isn’t seen so the analyzer is not able to determine whether to send the data to the files framework or to the DCE_RPC analyzer. This heuristic can be tuned by adding or removing “named pipe” names from the SMB::pipe_filenames const.

C:	The connection.

Bro::SMTP

SMTP analyzer

Components

Analyzer::ANALYZER_SMTP

Events

smtp_request

Type:	`event` (c: `connection`, is_orig: `bool`, command: `string`, arg: `string`)

Generated for client-side SMTP commands.

See Wikipedia for more information about the SMTP protocol.

C:	The connection.
Is_orig:	True if the sender of the command is the originator of the TCP connection. Note that this is not redundant: the SMTP `TURN` command allows client and server to flip roles on established SMTP sessions, and hence a “request” might still come from the TCP-level responder. In practice, however, that will rarely happen as TURN is considered insecure and rarely used.
Command:	The request’s command, without any arguments.
Arg:	The request command’s arguments.

Note

Bro does not support the newer ETRN extension yet.

smtp_reply

Type:	`event` (c: `connection`, is_orig: `bool`, code: `count`, cmd: `string`, msg: `string`, cont_resp: `bool`)

Generated for server-side SMTP commands.

See Wikipedia for more information about the SMTP protocol.

C:	The connection.
Is_orig:	True if the sender of the command is the originator of the TCP connection. Note that this is not redundant: the SMTP `TURN` command allows client and server to flip roles on established SMTP sessions, and hence a “reply” might still come from the TCP-level originator. In practice, however, that will rarely happen as TURN is considered insecure and rarely used.
Code:	The reply’s numerical code.
Cmd:	TODO.
Msg:	The reply’s textual description.
Cont_resp:	True if the reply line is tagged as being continued to the next line. If so, further events will be raised and a handler may want to reassemble the pieces before processing the response any further.

Note

Bro doesn’t support the newer ETRN extension yet.

smtp_data

Type:	`event` (c: `connection`, is_orig: `bool`, data: `string`)

Generated for DATA transmitted on SMTP sessions. This event is raised for subsequent chunks of raw data following the DATA SMTP command until the corresponding end marker . is seen. A handler may want to reassemble the pieces as they come in if stream-analysis is required.

See Wikipedia for more information about the SMTP protocol.

C:	The connection.
Is_orig:	True if the sender of the data is the originator of the TCP connection.
Data:	The raw data. Note that the size of each chunk is undefined and depends on specifics of the underlying TCP connection.

Note

This event receives the unprocessed raw data. There is a separate set of mime_* events that strip out the outer MIME-layer of emails and provide structured access to their content.

smtp_unexpected

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`, detail: `string`)

Generated for unexpected activity on SMTP sessions. The SMTP analyzer tracks the state of SMTP sessions and reports commands and other activity with this event that it sees even though it would not expect so at the current point of the communication.

See Wikipedia for more information about the SMTP protocol.

C:	The connection.
Is_orig:	True if the sender of the unexpected activity is the originator of the TCP connection.
Msg:	A descriptive message of what was unexpected.
Detail:	The actual SMTP line triggering the event.

smtp_starttls

Type:	`event` (c: `connection`)

Generated if a connection switched to using TLS using STARTTLS or X-ANONYMOUSTLS. After this event no more SMTP events will be raised for the connection. See the SSL analyzer for related SSL events, which will now be generated.

C:	The connection.

Functions

skip_smtp_data

Type:	`function` (c: `connection`) : `any`

Skips SMTP data until the next email in a connection.

C:	The SMTP connection.

Bro::SNMP

SNMP analyzer

Components

Analyzer::ANALYZER_SNMP

Types

SNMP::Header

Type:

record

version: count

v1: SNMP::HeaderV1 &optional: Set when version is 0.
v2: SNMP::HeaderV2 &optional: Set when version is 1.
v3: SNMP::HeaderV3 &optional: Set when version is 3.

A generic SNMP header data structure that may include data from any version of SNMP. The value of the version field determines what header field is initialized.

SNMP::HeaderV1

Type:

record

community: string

The top-level message data structure of an SNMPv1 datagram, not including the PDU data. See RFC 1157.

SNMP::HeaderV2

Type:

record

community: string

The top-level message data structure of an SNMPv2 datagram, not including the PDU data. See RFC 1901.

SNMP::HeaderV3

Type:

record

id: count

max_size: count

flags: count

auth_flag: bool

priv_flag: bool

reportable_flag: bool

security_model: count

security_params: string

pdu_context: SNMP::ScopedPDU_Context &optional

The top-level message data structure of an SNMPv3 datagram, not including the PDU data. See RFC 3412.

SNMP::PDU

Type:

record

request_id: int

error_status: int

error_index: int

bindings: SNMP::Bindings

A PDU data structure from either RFC 1157 or RFC 3416.

SNMP::TrapPDU

Type:

record

enterprise: string

agent: addr

generic_trap: int

specific_trap: int

time_stamp: count

bindings: SNMP::Bindings

A Trap-PDU data structure from RFC 1157.

SNMP::BulkPDU

Type:

record

request_id: int

non_repeaters: count

max_repititions: count

bindings: SNMP::Bindings

A BulkPDU data structure from RFC 3416.

SNMP::ScopedPDU_Context

Type:

record

engine_id: string

name: string

The ScopedPduData data structure of an SNMPv3 datagram, not including the PDU data (i.e. just the “context” fields). See RFC 3412.

SNMP::ObjectValue

Type:

record

tag: count

oid: string &optional

signed: int &optional

unsigned: count &optional

address: addr &optional

octets: string &optional

A generic SNMP object value, that may include any of the valid ObjectSyntax values from RFC 1155 or RFC 3416. The value is decoded whenever possible and assigned to the appropriate field, which can be determined from the value of the tag field. For tags that can’t be mapped to an appropriate type, the octets field holds the BER encoded ASN.1 content if there is any (though, octets is may also be used for other tags such as OCTET STRINGS or Opaque). Null values will only have their corresponding tag value set.

SNMP::Binding

Type:

record

oid: string

value: SNMP::ObjectValue

The VarBind data structure from either RFC 1157 or RFC 3416, which maps an Object Identifier to a value.

SNMP::Bindings

Type:	`vector` of `SNMP::Binding`

A VarBindList data structure from either RFC 1157 or RFC 3416. A sequences of SNMP::Binding, which maps an OIDs to values.

Events

snmp_get_request

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP GetRequest-PDU message from either RFC 1157 or RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_get_next_request

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP GetNextRequest-PDU message from either RFC 1157 or RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_response

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP GetResponse-PDU message from RFC 1157 or a Response-PDU from RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_set_request

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP SetRequest-PDU message from either RFC 1157 or RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_trap

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::TrapPDU`)

An SNMP Trap-PDU message from RFC 1157.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_get_bulk_request

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::BulkPDU`)

An SNMP GetBulkRequest-PDU message from RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_inform_request

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP InformRequest-PDU message from RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_trapV2

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP SNMPv2-Trap-PDU message from RFC 1157.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_report

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, pdu: `SNMP::PDU`)

An SNMP Report-PDU message from RFC 3416.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Pdu:	An SNMP PDU data structure.

snmp_unknown_pdu

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, tag: `count`)

An SNMP PDU message of unknown type.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Tag:	The tag of the unknown SNMP PDU.

snmp_unknown_scoped_pdu

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`, tag: `count`)

An SNMPv3 ScopedPDUData of unknown type (neither plaintext or an encrypted PDU was in the datagram).

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.
Tag:	The tag of the unknown SNMP PDU scope.

snmp_encrypted_pdu

Type:	`event` (c: `connection`, is_orig: `bool`, header: `SNMP::Header`)

An SNMPv3 encrypted PDU message.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Header:	SNMP version-dependent data that precedes PDU data in the top-level SNMP message structure.

snmp_unknown_header_version

Type:	`event` (c: `connection`, is_orig: `bool`, version: `count`)

A datagram with an unknown SNMP version.

C:	The connection over which the SNMP datagram is sent.
Is_orig:	The endpoint which sent the SNMP datagram.
Version:	The value of the unknown SNMP version.

Bro::SOCKS

SOCKS analyzer

Components

Analyzer::ANALYZER_SOCKS

Events

socks_request

Type:	`event` (c: `connection`, version: `count`, request_type: `count`, sa: `SOCKS::Address`, p: `port`, user: `string`)

Generated when a SOCKS request is analyzed.

C:	The parent connection of the proxy.
Version:	The version of SOCKS this message used.
Request_type:	The type of the request.
Sa:	Address that the tunneled traffic should be sent to.
P:	The destination port for the proxied traffic.
User:	Username given for the SOCKS connection. This is not yet implemented for SOCKSv5.

socks_reply

Type:	`event` (c: `connection`, version: `count`, reply: `count`, sa: `SOCKS::Address`, p: `port`)

Generated when a SOCKS reply is analyzed.

C:	The parent connection of the proxy.
Version:	The version of SOCKS this message used.
Reply:	The status reply from the server.
Sa:	The address that the server sent the traffic to.
P:	The destination port for the proxied traffic.

socks_login_userpass_request

Type:	`event` (c: `connection`, user: `string`, password: `string`)

Generated when a SOCKS client performs username and password based login.

C:	The parent connection of the proxy.
User:	The given username.
Password:	The given password.

socks_login_userpass_reply

Type:	`event` (c: `connection`, code: `count`)

Generated when a SOCKS server replies to a username/password login attempt.

C:	The parent connection of the proxy.
Code:	The response code for the attempted login.

Bro::SSH

Secure Shell analyzer

Components

Analyzer::ANALYZER_SSH

Types

SSH::Algorithm_Prefs

Type:

record

client_to_server: vector of string &optional: The algorithm preferences for client to server communication
server_to_client: vector of string &optional: The algorithm preferences for server to client communication

The client and server each have some preferences for the algorithms used in each direction.

SSH::Capabilities

Type:

record

kex_algorithms: string_vec: Key exchange algorithms
server_host_key_algorithms: string_vec: The algorithms supported for the server host key
encryption_algorithms: SSH::Algorithm_Prefs: Symmetric encryption algorithm preferences
mac_algorithms: SSH::Algorithm_Prefs: Symmetric MAC algorithm preferences
compression_algorithms: SSH::Algorithm_Prefs: Compression algorithm preferences
languages: SSH::Algorithm_Prefs &optional: Language preferences
is_server: bool: Are these the capabilities of the server?

This record lists the preferences of an SSH endpoint for algorithm selection. During the initial SSH key exchange, each endpoint lists the algorithms that it supports, in order of preference. See RFC 4253#section-7.1 for details.

Events

ssh_server_version

Type:	`event` (c: `connection`, version: `string`)

An SSH Protocol Version Exchange message from the server. This contains an identification string that’s used for version identification. See RFC 4253#section-4.2 for details.

C:	The connection over which the message was sent.
Version:	The identification string

ssh_client_version

Type:	`event` (c: `connection`, version: `string`)

An SSH Protocol Version Exchange message from the client. This contains an identification string that’s used for version identification. See RFC 4253#section-4.2 for details.

C:	The connection over which the message was sent.
Version:	The identification string

ssh_auth_successful

Type:	`event` (c: `connection`, auth_method_none: `bool`)

This event is generated when an SSH connection was determined to have had a successful authentication. This determination is based on packet size analysis, and errs on the side of caution - that is, if there’s any doubt about the authentication success, this event is not raised.

Auth_method_none:
C:	The connection over which the SSH connection took place.
	This is true if the analyzer detected a successful connection before any authentication challenge. The SSH protocol provides a mechanism for unauthenticated access, which some servers support.

ssh_auth_attempted

Type:	`event` (c: `connection`, authenticated: `bool`)

This event is generated when an SSH connection was determined to have had an authentication attempt. This determination is based on packet size analysis, and errs on the side of caution - that is, if there’s any doubt about whether or not an authenication attempt occured, this event is not raised.

At this point in the protocol, all we can determine is whether or not the user is authenticated. We don’t know if the particular attempt succeeded or failed, since some servers require multiple authentications (e.g. require both a password AND a pubkey), and could return an authentication failed message which is marked as a partial success.

This event will often be raised multiple times per connection. In almost all connections, it will be raised once unless

C:	The connection over which the SSH connection took place.
Authenticated:	This is true if the analyzer detected a successful connection from the authentication attempt.

ssh_capabilities

Type:	`event` (c: `connection`, cookie: `string`, capabilities: `SSH::Capabilities`)

During the initial SSH key exchange, each endpoint lists the algorithms that it supports, in order of preference. This event is generated for each endpoint, when the SSH_MSG_KEXINIT message is seen. See RFC 4253#section-7.1 for details.

C:	The connection over which the SSH connection took place.
Cookie:	The SSH_MSG_KEXINIT cookie - a random value generated by the sender.
Capabilities:	The list of algorithms and languages that the sender advertises support for, in order of preference.

ssh2_server_host_key

Type:	`event` (c: `connection`, key: `string`)

During the SSH key exchange, the server supplies its public host key. This event is generated when the appropriate key exchange message is seen for SSH2.

C:	The connection over which the SSH connection took place.
Key:	The server’s public host key. Note that this is the public key itself, and not just the fingerprint or hash.

ssh1_server_host_key

Type:	`event` (c: `connection`, p: `string`, e: `string`)

During the SSH key exchange, the server supplies its public host key. This event is generated when the appropriate key exchange message is seen for SSH1.

C:	The connection over which the SSH connection took place.
P:	The prime for the server’s public host key.
E:	The exponent for the serer’s public host key.

ssh_encrypted_packet

Type:	`event` (c: `connection`, orig: `bool`, len: `count`)

This event is generated when an SSH encrypted packet is seen. This event is not handled by default, but is provided for heuristic analysis scripts. Note that you have to set SSH::disable_analyzer_after_detection to false to use this event. This carries a performance penalty.

C:	The connection over which the SSH connection took place.
Orig:	Whether the packet was sent by the originator of the TCP connection.
Len:	The length of the SSH payload, in bytes. Note that this ignores reassembly, as this is unknown.

ssh2_dh_server_params

Type:	`event` (c: `connection`, p: `string`, q: `string`)

Generated if the connection uses a Diffie-Hellman Group Exchange key exchange method. This event contains the server DH parameters, which are sent in the SSH_MSG_KEY_DH_GEX_GROUP message as defined in RFC 4419#section-3.

C:	The connection.
P:	The DH prime modulus.
Q:	The DH generator.

ssh2_gss_error

Type:	`event` (c: `connection`, major_status: `count`, minor_status: `count`, err_msg: `string`)

In the event of a GSS-API error on the server, the server MAY send send an error message with some additional details. This event is generated when such an error message is seen. For more information, see RFC 4462#section-2.1.

C:	The connection.
Major_status:	GSS-API major status code.
Minor_status:	GSS-API minor status code.
Err_msg:	Detailed human-readable error message

ssh2_ecc_key

Type:	`event` (c: `connection`, is_orig: `bool`, q: `string`)

The ECDH and ECMQV key exchange algorithms use two ephemeral key pairs to generate a shared secret. This event is generated when either the client’s or server’s ephemeral public key is seen. For more information, see: RFC 5656#section-4.

C:	The connection
Is_orig:	Did this message come from the originator?
Q:	The ephemeral public key

Bro::SSL

SSL/TLS and DTLS analyzers

Components

Analyzer::ANALYZER_DTLS

Analyzer::ANALYZER_SSL

Types

SSL::SignatureAndHashAlgorithm

Type:

record

HashAlgorithm: count: Hash algorithm number
SignatureAlgorithm: count: Signature algorithm number

Events

ssl_client_hello

Type:	`event` (c: `connection`, version: `count`, possible_ts: `time`, client_random: `string`, session_id: `string`, ciphers: `index_vec`)

Generated for an SSL/TLS client’s initial hello message. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. This event provides access to the initial information sent by the client.

See Wikipedia for more information about the SSL/TLS protocol.

C:	The connection.
Version:	The protocol version as extracted from the client’s message. The values are standardized as part of the SSL/TLS protocol. The `SSL::version_strings` table maps them to descriptive names.
Possible_ts:	The current time as sent by the client. Note that SSL/TLS does not require clocks to be set correctly, so treat with care.
Session_id:	The session ID sent by the client (if any).
Client_random:	The random value sent by the client. For version 2 connections, the client challenge is returned.
Ciphers:	The list of ciphers the client offered to use. The values are standardized as part of the SSL/TLS protocol. The `SSL::cipher_desc` table maps them to descriptive names.

ssl_server_hello

Type:	`event` (c: `connection`, version: `count`, possible_ts: `time`, server_random: `string`, session_id: `string`, cipher: `count`, comp_method: `count`)

Generated for an SSL/TLS server’s initial hello message. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. This event provides access to the initial information sent by the client.

See Wikipedia for more information about the SSL/TLS protocol.

C:	The connection.
Version:	The protocol version as extracted from the server’s message. The values are standardized as part of the SSL/TLS protocol. The `SSL::version_strings` table maps them to descriptive names.
Possible_ts:	The current time as sent by the server. Note that SSL/TLS does not require clocks to be set correctly, so treat with care. This value is not sent in TLSv1.3.
Session_id:	The session ID as sent back by the server (if any). This value is not sent in TLSv1.3.
Server_random:	The random value sent by the server. For version 2 connections, the connection-id is returned.
Cipher:	The cipher chosen by the server. The values are standardized as part of the SSL/TLS protocol. The `SSL::cipher_desc` table maps them to descriptive names.
Comp_method:	The compression method chosen by the client. The values are standardized as part of the SSL/TLS protocol. This value is not sent in TLSv1.3.

ssl_extension

Type:	`event` (c: `connection`, is_orig: `bool`, code: `count`, val: `string`)

Generated for SSL/TLS extensions seen in an initial handshake. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. This event provides access to any extensions either side sends as part of an extended hello message.

Note that Bro offers more specialized events for a few extensions.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Code:	The numerical code of the extension. The values are standardized as part of the SSL/TLS protocol. The `SSL::extensions` table maps them to descriptive names.
Val:	The raw extension value that was sent in the message.

ssl_extension_elliptic_curves

Type:	`event` (c: `connection`, is_orig: `bool`, curves: `index_vec`)

Generated for an SSL/TLS Elliptic Curves extension. This TLS extension is defined in RFC 4492 and sent by the client in the initial handshake. It gives the list of elliptic curves supported by the client.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Curves:	List of supported elliptic curves.

ssl_extension_ec_point_formats

Type:	`event` (c: `connection`, is_orig: `bool`, point_formats: `index_vec`)

Generated for an SSL/TLS Supported Point Formats extension. This TLS extension is defined in RFC 4492 and sent by the client and/or server in the initial handshake. It gives the list of elliptic curve point formats supported by the client.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Point_formats:	List of supported point formats.

ssl_extension_signature_algorithm

Type:	`event` (c: `connection`, is_orig: `bool`, signature_algorithms: `signature_and_hashalgorithm_vec`)

Generated for an Signature Algorithms extension. This TLS extension is defined in RFC 5246 and sent by the client in the initial handshake. It gives the list of signature and hash algorithms supported by the client.

Signature_algorithms:
C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
	List of supported signature and hash algorithm pairs.

ssl_extension_key_share

Type:	`event` (c: `connection`, is_orig: `bool`, curves: `index_vec`)

Generated for a Key Share extension. This TLS extension is defined in TLS1.3-draft16 and sent by the client and the server in the initial handshake. It gives the list of named groups supported by the client and chosen by the server.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Curves:	List of supported/chosen named groups.

ssl_server_curve

Type:	`event` (c: `connection`, curve: `count`)

Generated if a named curve is chosen by the server for an SSL/TLS connection. The curve is sent by the server in the ServerKeyExchange message as defined in RFC 4492, in case an ECDH or ECDHE cipher suite is chosen.

C:	The connection.
Curve:	The curve.

ssl_dh_server_params

Type:	`event` (c: `connection`, p: `string`, q: `string`, Ys: `string`)

Generated if a server uses a DH-anon or DHE cipher suite. This event contains the server DH parameters, which are sent in the ServerKeyExchange message as defined in RFC 5246.

C:	The connection.
P:	The DH prime modulus.
Q:	The DH generator.
Ys:	The server’s DH public key.

ssl_extension_application_layer_protocol_negotiation

Type:	`event` (c: `connection`, is_orig: `bool`, protocols: `string_vec`)

Generated for an SSL/TLS Application-Layer Protocol Negotiation extension. This TLS extension is defined in draft-ietf-tls-applayerprotoneg and sent in the initial handshake. It contains the list of client supported application protocols by the client or the server, respectively.

At the moment it is mostly used to negotiate the use of SPDY / HTTP2-drafts.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Protocols:	List of supported application layer protocols.

ssl_extension_server_name

Type:	`event` (c: `connection`, is_orig: `bool`, names: `string_vec`)

Generated for an SSL/TLS Server Name extension. This SSL/TLS extension is defined in RFC 3546 and sent by the client in the initial handshake. It contains the name of the server it is contacting. This information can be used by the server to choose the correct certificate for the host the client wants to contact.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Names:	A list of server names (DNS hostnames).

ssl_extension_supported_versions

Type:	`event` (c: `connection`, is_orig: `bool`, versions: `index_vec`)

Generated for an TLS Supported Versions extension. This TLS extension is defined in the TLS 1.3 rfc and sent by the client in the initial handshake. It contains the TLS versions that it supports. This informaion can be used by the server to choose the best TLS version o use.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Versions:	List of supported TLS versions.

ssl_extension_psk_key_exchange_modes

Type:	`event` (c: `connection`, is_orig: `bool`, modes: `index_vec`)

Generated for an TLS Pre-Shared Key Exchange Modes extension. This TLS extension is defined in the TLS 1.3 rfc and sent by the client in the initial handshake. It contains the list of Pre-Shared Key Exchange Modes that it supports.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Versions:	List of supported Pre-Shared Key Exchange Modes.

ssl_established

Type:	`event` (c: `connection`)

Generated at the end of an SSL/TLS handshake. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. This event signals the time when an SSL/TLS has finished the handshake and its endpoints consider it as fully established. Typically, everything from now on will be encrypted.

See Wikipedia for more information about the SSL/TLS protocol.

C:	The connection.

ssl_alert

Type:	`event` (c: `connection`, is_orig: `bool`, level: `count`, desc: `count`)

Generated for SSL/TLS alert records. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. If during that handshake, an endpoint encounters a fatal error, it sends an alert record, that in turn triggers this event. After an alert, any endpoint may close the connection immediately.

See Wikipedia for more information about the SSL/TLS protocol.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Level:	The severity level, as sent in the alert. The values are defined as part of the SSL/TLS protocol.
Desc:	A numerical value identifying the cause of the alert. The values are defined as part of the SSL/TLS protocol.

ssl_session_ticket_handshake

Type:	`event` (c: `connection`, ticket_lifetime_hint: `count`, ticket: `string`)

Generated for SSL/TLS handshake messages that are a part of the stateless-server session resumption mechanism. SSL/TLS sessions start with an unencrypted handshake, and Bro extracts as much information out of that as it can. This event is raised when an SSL/TLS server passes a session ticket to the client that can later be used for resuming the session. The mechanism is described in RFC 4507.

See Wikipedia for more information about the SSL/TLS protocol.

Ticket_lifetime_hint:
C:	The connection.
	A hint from the server about how long the ticket should be stored by the client.
Ticket:	The raw ticket data.

ssl_heartbeat

Type:	`event` (c: `connection`, is_orig: `bool`, length: `count`, heartbeat_type: `count`, payload_length: `count`, payload: `string`)

Generated for SSL/TLS heartbeat messages that are sent before session encryption starts. Generally heartbeat messages should rarely be seen in normal TLS traffic. Heartbeats are described in RFC 6520.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Length:	length of the entire heartbeat message.
Heartbeat_type:	type of the heartbeat message. Per RFC, 1 = request, 2 = response.
Payload_length:	length of the payload of the heartbeat message, according to packet field.
Payload:	payload contained in the heartbeat message. Size can differ from payload_length, if payload_length and actual packet length disagree.

ssl_application_data

Type:	`event` (c: `connection`, is_orig: `bool`, length: `count`)

Generated for non-handshake SSL/TLS application_data messages that are sent before full encryption starts. For TLS 1.2 and lower, this event should not be raised. For TLS 1.3, it is used by Bro internally to determine if the connection has been completely setup. This is necessary as TLS 1.3 does not have CCS anymore.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Content_type:	message type as reported by TLS session layer.
Length:	length of the entire heartbeat message.

ssl_encrypted_data

Type:	`event` (c: `connection`, is_orig: `bool`, content_type: `count`, length: `count`)

Generated for SSL/TLS messages that are sent after session encryption started.

Note that SSL::disable_analyzer_after_detection has to be changed from its default to false for this event to be generated.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Content_type:	message type as reported by TLS session layer.
Length:	length of the entire heartbeat message.

ssl_stapled_ocsp

Type:	`event` (c: `connection`, is_orig: `bool`, response: `string`)

This event contains the OCSP response contained in a Certificate Status Request message, when the client requested OCSP stapling and the server supports it. See description in RFC 6066.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Response:	OCSP data.

ssl_handshake_message

Type:	`event` (c: `connection`, is_orig: `bool`, msg_type: `count`, length: `count`)

This event is raised for each unencrypted SSL/TLS handshake message.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.
Msg_type:	Type of the handshake message that was seen.
Length:	Length of the handshake message that was seen.

ssl_change_cipher_spec

Type:	`event` (c: `connection`, is_orig: `bool`)

This event is raised when a SSL/TLS ChangeCipherSpec message is encountered before encryption begins. Traffic will be encrypted following this message.

C:	The connection.
Is_orig:	True if event is raised for originator side of the connection.

Functions

set_ssl_established

Type:	`function` (c: `connection`) : `any`

Sets if the SSL analyzer should consider the connection established (handshake finished succesfully).

C:	The SSL connection.

Bro::SteppingStone

Stepping stone analyzer

Components

Analyzer::ANALYZER_STEPPINGSTONE

Events

stp_create_endp

Type:	`event` (c: `connection`, e: `int`, is_orig: `bool`)

Deprecated. Will be removed.

stp_resume_endp

Type:	`event` (e: `int`)

Event internal to the stepping stone detector.

stp_correlate_pair

Type:	`event` (e1: `int`, e2: `int`)

Event internal to the stepping stone detector.

stp_remove_pair

Type:	`event` (e1: `int`, e2: `int`)

Event internal to the stepping stone detector.

stp_remove_endp

Type:	`event` (e: `int`)

Event internal to the stepping stone detector.

Bro::Syslog

Syslog analyzer UDP-only

Components

Analyzer::ANALYZER_SYSLOG

Events

syslog_message

Type:	`event` (c: `connection`, facility: `count`, severity: `count`, msg: `string`)

Generated for monitored Syslog messages.

See Wikipedia for more information about the Syslog protocol.

C:	The connection record for the underlying transport-layer session/flow.
Facility:	The “facility” included in the message.
Severity:	The “severity” included in the message.
Msg:	The message logged.

Note

Bro currently parses only UDP syslog traffic. Support for TCP syslog will be added soon.

Bro::TCP

TCP analyzer

Components

Analyzer::ANALYZER_CONTENTLINE

Analyzer::ANALYZER_CONTENTS

Analyzer::ANALYZER_TCP

Analyzer::ANALYZER_TCPSTATS

Events

new_connection_contents

Type:	`event` (c: `connection`)

Generated when reassembly starts for a TCP connection. This event is raised at the moment when Bro’s TCP analyzer enables stream reassembly for a connection.

C:	The connection.

connection_attempt

Type:	`event` (c: `connection`)

Generated for an unsuccessful connection attempt. This event is raised when an originator unsuccessfully attempted to establish a connection. “Unsuccessful” is defined as at least tcp_attempt_delay seconds having elapsed since the originator first sent a connection establishment packet to the destination without seeing a reply.

C:	The connection.

connection_established

Type:	`event` (c: `connection`)

Generated when seeing a SYN-ACK packet from the responder in a TCP handshake. An associated SYN packet was not seen from the originator side if its state is not set to TCP_ESTABLISHED. The final ACK of the handshake in response to SYN-ACK may or may not occur later, one way to tell is to check the history field of connection to see if the originator sent an ACK, indicated by ‘A’ in the history string.

C:	The connection.

partial_connection

Type:	`event` (c: `connection`)

Generated for a new active TCP connection if Bro did not see the initial handshake. This event is raised when Bro has observed traffic from each endpoint, but the activity did not begin with the usual connection establishment.

C:	The connection.

connection_partial_close

Type:	`event` (c: `connection`)

Generated when a previously inactive endpoint attempts to close a TCP connection via a normal FIN handshake or an abort RST sequence. When the endpoint sent one of these packets, Bro waits tcp_partial_close_delay prior to generating the event, to give the other endpoint a chance to close the connection normally.

C:	The connection.

connection_finished

Type:	`event` (c: `connection`)

Generated for a TCP connection that finished normally. The event is raised when a regular FIN handshake from both endpoints was observed.

C:	The connection.

connection_half_finished

Type:	`event` (c: `connection`)

Generated when one endpoint of a TCP connection attempted to gracefully close the connection, but the other endpoint is in the TCP_INACTIVE state. This can happen due to split routing, in which Bro only sees one side of a connection.

C:	The connection.

connection_rejected

Type:	`event` (c: `connection`)

Generated for a rejected TCP connection. This event is raised when an originator attempted to setup a TCP connection but the responder replied with a RST packet denying it.

C:	The connection.

Note

If the responder does not respond at all, connection_attempt is raised instead. If the responder initially accepts the connection but aborts it later, Bro first generates connection_established and then connection_reset.

connection_reset

Type:	`event` (c: `connection`)

Generated when an endpoint aborted a TCP connection. The event is raised when one endpoint of an established TCP connection aborted by sending a RST packet.

C:	The connection.

connection_pending

Type:	`event` (c: `connection`)

Generated for each still-open TCP connection when Bro terminates.

C:	The connection.

connection_SYN_packet

Type:	`event` (c: `connection`, pkt: `SYN_packet`)

Generated for a SYN packet. Bro raises this event for every SYN packet seen by its TCP analyzer.

C:	The connection.
Pkt:	Information extracted from the SYN packet.

Note

This event has quite low-level semantics and can potentially be expensive to generate. It should only be used if one really needs the specific information passed into the handler via the pkt argument. If not, handling one of the other connection_* events is typically the better approach.

connection_first_ACK

Type:	`event` (c: `connection`)

Generated for the first ACK packet seen for a TCP connection from its originator.

C:	The connection.

Note

This event has quite low-level semantics and should be used only rarely.

connection_EOF

Type:	`event` (c: `connection`, is_orig: `bool`)

Generated at the end of reassembled TCP connections. The TCP reassembler raised the event once for each endpoint of a connection when it finished reassembling the corresponding side of the communication.

C:	The connection.
Is_orig:	True if the event is raised for the originator side.

tcp_packet

Type:	`event` (c: `connection`, is_orig: `bool`, flags: `string`, seq: `count`, ack: `count`, len: `count`, payload: `string`)

Generated for every TCP packet. This is a very low-level and expensive event that should be avoided when at all possible. It’s usually infeasible to handle when processing even medium volumes of traffic in real-time. It’s slightly better than new_packet because it affects only TCP, but not much. That said, if you work from a trace and want to do some packet-level analysis, it may come in handy.

C:	The connection the packet is part of.
Is_orig:	True if the packet was sent by the connection’s originator.
Flags:	A string with the packet’s TCP flags. In the string, each character corresponds to one set flag, as follows: `S` -> SYN; `F` -> FIN; `R` -> RST; `A` -> ACK; `P` -> PUSH.
Seq:	The packet’s relative TCP sequence number.
Ack:	If the ACK flag is set for the packet, the packet’s relative ACK number, else zero.
Len:	The length of the TCP payload, as specified in the packet header.
Payload:	The raw TCP payload. Note that this may be shorter than len if the packet was not fully captured.

tcp_option

Type:	`event` (c: `connection`, is_orig: `bool`, opt: `count`, optlen: `count`)

Generated for each option found in a TCP header. Like many of the tcp_* events, this is a very low-level event and potentially expensive as it may be raised very often.

C:	The connection the packet is part of.
Is_orig:	True if the packet was sent by the connection’s originator.
Opt:	The numerical option number, as found in the TCP header.
Optlen:	The length of the options value.

Note

There is currently no way to get the actual option value, if any.

tcp_contents

Type:	`event` (c: `connection`, is_orig: `bool`, seq: `count`, contents: `string`)

Generated for each chunk of reassembled TCP payload. When content delivery is enabled for a TCP connection (via tcp_content_delivery_ports_orig, tcp_content_delivery_ports_resp, tcp_content_deliver_all_orig, tcp_content_deliver_all_resp), this event is raised for each chunk of in-order payload reconstructed from the packet stream. Note that this event is potentially expensive if many connections carry significant amounts of data as then all that data needs to be passed on to the scripting layer.

C:	The connection the payload is part of.
Is_orig:	True if the packet was sent by the connection’s originator.
Seq:	The sequence number corresponding to the first byte of the payload chunk.
Contents:	The raw payload, which will be non-empty.

Note

The payload received by this event is the same that is also passed into application-layer protocol analyzers internally. Subsequent invocations of this event for the same connection receive non-overlapping in-order chunks of its TCP payload stream. It is however undefined what size each chunk has; while Bro passes the data on as soon as possible, specifics depend on network-level effects such as latency, acknowledgements, reordering, etc.

tcp_rexmit

Type:	`event` (c: `connection`, is_orig: `bool`, seq: `count`, len: `count`, data_in_flight: `count`, window: `count`)

TODO.

contents_file_write_failure

Type:	`event` (c: `connection`, is_orig: `bool`, msg: `string`)

Generated when failing to write contents of a TCP stream to a file.

C:	The connection whose contents are being recorded.
Is_orig:	Which side of the connection encountered a failure to write.
Msg:	A reason or description for the failure.

Functions

get_orig_seq

Type:	`function` (cid: `conn_id`) : `count`

Get the originator sequence number of a TCP connection. Sequence numbers are absolute (i.e., they reflect the values seen directly in packet headers; they are not relative to the beginning of the connection).

Cid:	The connection ID.
Returns:	The highest sequence number sent by a connection’s originator, or 0 if cid does not point to an active TCP connection.

Bro::Teredo

Teredo analyzer

Components

Analyzer::ANALYZER_TEREDO

Events

teredo_packet

Type:	`event` (outer: `connection`, inner: `teredo_hdr`)

Generated for any IPv6 packet encapsulated in a Teredo tunnel. See RFC 4380 for more information about the Teredo protocol.

Outer:	The Teredo tunnel connection.
Inner:	The Teredo-encapsulated IPv6 packet header and transport header.

Note

Since this event may be raised on a per-packet basis, handling it may become particularly expensive for real-time analysis.

teredo_authentication

Type:	`event` (outer: `connection`, inner: `teredo_hdr`)

Generated for IPv6 packets encapsulated in a Teredo tunnel that use the Teredo authentication encapsulation method. See RFC 4380 for more information about the Teredo protocol.

Outer:	The Teredo tunnel connection.
Inner:	The Teredo-encapsulated IPv6 packet header and transport header.

Note

Since this event may be raised on a per-packet basis, handling it may become particularly expensive for real-time analysis.

teredo_origin_indication

Type:	`event` (outer: `connection`, inner: `teredo_hdr`)

Generated for IPv6 packets encapsulated in a Teredo tunnel that use the Teredo origin indication encapsulation method. See RFC 4380 for more information about the Teredo protocol.

Outer:	The Teredo tunnel connection.
Inner:	The Teredo-encapsulated IPv6 packet header and transport header.

Note

Since this event may be raised on a per-packet basis, handling it may become particularly expensive for real-time analysis.

teredo_bubble

Type:	`event` (outer: `connection`, inner: `teredo_hdr`)

Generated for Teredo bubble packets. That is, IPv6 packets encapsulated in a Teredo tunnel that have a Next Header value of IPPROTO_NONE. See RFC 4380 for more information about the Teredo protocol.

Outer:	The Teredo tunnel connection.
Inner:	The Teredo-encapsulated IPv6 packet header and transport header.

Note

Since this event may be raised on a per-packet basis, handling it may become particularly expensive for real-time analysis.

Bro::UDP

UDP Analyzer

Components

Analyzer::ANALYZER_UDP

Events

udp_request

Type:	`event` (u: `connection`)

Generated for each packet sent by a UDP flow’s originator. This a potentially expensive event due to the volume of UDP traffic and should be used with care.

U:	The connection record for the corresponding UDP flow.

udp_reply

Type:	`event` (u: `connection`)

Generated for each packet sent by a UDP flow’s responder. This a potentially expensive event due to the volume of UDP traffic and should be used with care.

U:	The connection record for the corresponding UDP flow.

udp_contents

Type:	`event` (u: `connection`, is_orig: `bool`, contents: `string`)

Generated for UDP packets to pass on their payload. As the number of UDP packets can be very large, this event is normally raised only for those on ports configured in udp_content_delivery_ports_orig (for packets sent by the flow’s originator) or udp_content_delivery_ports_resp (for packets sent by the flow’s responder). However, delivery can be enabled for all UDP request and reply packets by setting udp_content_deliver_all_orig or udp_content_deliver_all_resp, respectively. Note that this event is also raised for all matching UDP packets, including empty ones.

U:	The connection record for the corresponding UDP flow.
Is_orig:	True if the event is raised for the originator side.
Contents:	TODO.

Bro::XMPP

XMPP analyzer (StartTLS only)

Components

Analyzer::ANALYZER_XMPP

Events

xmpp_starttls

Type:	`event` (c: `connection`)

Generated when a XMPP connection goes encrypted after a successful StartTLS exchange between the client and the server.

C:	The connection.

Bro::ZIP

Generic ZIP support analyzer

Components

Analyzer::ANALYZER_ZIP

C:	The connection.
Reply_line:	The reply as returned by the server

URI:	The URI to unescape.
Returns:	The unescaped URI with all `%xx` groups decoded.

C:	The connection.
Lport:	The corresponding request’s local port.
Rport:	The corresponding request’s remote port.
User_id:	The user id returned by the reply.
System:	The operating system returned by the reply.

Cid:	The connection ID.
New_state:	The new state of the login analyzer. See `get_login_state` for possible values.
Returns:	Returns false if cid is not an active connection or is not tagged as a login analyzer, and true otherwise.

Name:	The NetBIOS name type.
Returns:	The numeric value of name.

Cid:	The connection ID.
Direction:	Controls what sides of the connection to record. The argument can take one of the four values: `CONTENTS_NONE`: Stop recording the connection’s content. `CONTENTS_ORIG`: Record the data sent by the connection originator (often the client). `CONTENTS_RESP`: Record the data sent by the connection responder (often the server). `CONTENTS_BOTH`: Record the data sent in both directions. Results in the two directions being intermixed in the file, in the order the data was seen by Bro.
F:	The file handle of the file to write the contents to.
Returns:	Returns false if cid does not point to an active connection, and true otherwise.