pfSense 2.3 Grok Pattern

pfsense2-3.grok

# GROK Custom Patterns (add to patterns directory and reference in GROK filter for pfSense events):
# GROK Patterns for pfSense 2.3 Logging Format
#
# Created 27 Jan 2015 by J. Pisano (Handles TCP, UDP, and ICMP log entries)
# Edited 14 Feb 2015 by Elijah Paul [email protected]
# Edited 10 Mar 2015 by Bernd Zeimetz <[email protected]>
# Edited 6 Aug 2016 by Brian Turek <[email protected]>
# taken from https://gist.github.com/elijahpaul/3d80030ac3e8138848b5
# - adding PFSENSE_IGMP_DATA
# - moved and tweaked IPv4 ECN pattern (ecn is a WORD, not INT)
# - made PFSENSE_PROTOCOL_DATA optional in pattern (for ICMPv6)
# - added overall PFSENSE_LOG_ENTRY pattern
# - moved the ip_ver detection to version-specific rule to ensure proper identification
#
# TODO: Add support for IPv6 "Options" messages.  Optional PFSENSE_PROTOCOL_DATA still allows this to be parsed, albeit not fully.
#
# Usage: Use the PFSENSE_LOG_ENTRY pattern

PFSENSE_LOG_ENTRY %{PFSENSE_LOG_DATA}%{PFSENSE_IP_SPECIFIC_DATA}%{PFSENSE_IP_DATA}%{PFSENSE_PROTOCOL_DATA}?
PFSENSE_LOG_DATA %{INT:rule},%{INT:sub_rule},,%{INT:tracker},%{WORD:iface},%{WORD:reason},%{WORD:action},%{WORD:direction},
PFSENSE_IP_SPECIFIC_DATA %{PFSENSE_IPv4_SPECIFIC_DATA}|%{PFSENSE_IPv6_SPECIFIC_DATA}
PFSENSE_IPv4_SPECIFIC_DATA (?<ip_ver>(4)),%{BASE16NUM:tos},%{WORD:ecn}?,%{INT:ttl},%{INT:id},%{INT:offset},%{WORD:flags},%{INT:proto_id},%{WORD:proto},
PFSENSE_IPv6_SPECIFIC_DATA (?<ip_ver>(6)),%{BASE16NUM:class},%{DATA:flow_label},%{INT:hop_limit},%{WORD:proto},%{INT:proto_id},
PFSENSE_IP_DATA %{INT:length},%{IP:src_ip},%{IP:dest_ip},
PFSENSE_PROTOCOL_DATA %{PFSENSE_TCP_DATA}|%{PFSENSE_UDP_DATA}|%{PFSENSE_ICMP_DATA}|%{PFSENSE_CARP_DATA}|%{PFSENSE_IGMP_DATA}
PFSENSE_TCP_DATA %{INT:src_port},%{INT:dest_port},%{INT:data_length},%{WORD:tcp_flags},%{INT:sequence_number},%{INT:ack_number},%{INT:tcp_window},%{DATA:urg_data},%{DATA:tcp_options}
PFSENSE_UDP_DATA %{INT:src_port},%{INT:dest_port},%{INT:data_length}
PFSENSE_IGMP_DATA datalength=%{INT:data_length}
PFSENSE_ICMP_DATA %{PFSENSE_ICMP_TYPE}%{PFSENSE_ICMP_RESPONSE}
PFSENSE_ICMP_TYPE (?<icmp_type>(request|reply|unreachproto|unreachport|unreach|timeexceed|paramprob|redirect|maskreply|needfrag|tstamp|tstampreply)),
PFSENSE_ICMP_RESPONSE %{PFSENSE_ICMP_ECHO_REQ_REPLY}|%{PFSENSE_ICMP_UNREACHPORT}| %{PFSENSE_ICMP_UNREACHPROTO}|%{PFSENSE_ICMP_UNREACHABLE}|%{PFSENSE_ICMP_NEED_FLAG}|%{PFSENSE_ICMP_TSTAMP}|%{PFSENSE_ICMP_TSTAMP_REPLY}
PFSENSE_ICMP_ECHO_REQ_REPLY %{INT:icmp_echo_id},%{INT:icmp_echo_sequence}
PFSENSE_ICMP_UNREACHPORT %{IP:icmp_unreachport_dest_ip},%{WORD:icmp_unreachport_protocol},%{INT:icmp_unreachport_port}
PFSENSE_ICMP_UNREACHPROTO %{IP:icmp_unreach_dest_ip},%{WORD:icmp_unreachproto_protocol}
PFSENSE_ICMP_UNREACHABLE %{GREEDYDATA:icmp_unreachable}
PFSENSE_ICMP_NEED_FLAG %{IP:icmp_need_flag_ip},%{INT:icmp_need_flag_mtu}
PFSENSE_ICMP_TSTAMP %{INT:icmp_tstamp_id},%{INT:icmp_tstamp_sequence}
PFSENSE_ICMP_TSTAMP_REPLY %{INT:icmp_tstamp_reply_id},%{INT:icmp_tstamp_reply_sequence},%{INT:icmp_tstamp_reply_otime},%{INT:icmp_tstamp_reply_rtime},%{INT:icmp_tstamp_reply_ttime}
PFSENSE_CARP_DATA %{WORD:carp_type},%{INT:carp_ttl},%{INT:carp_vhid},%{INT:carp_version},%{INT:carp_advbase},%{INT:carp_advskew}