1# SNMP - Simple Network Management Protocol - RFC 1157
2# Pattern attributes: good veryfast fast superset
3# Protocol groups: networking ietf_internet_standard
4# Wiki: http://www.protocolinfo.org/wiki/SNMP
5#
6# Usually runs on UDP ports 161 (monitoring) and 162 (traps).
7#
8# These filters match SNMPv1 packets without fail, and are made as
9# specific as possible not to match any ASN.1 encoded protocols. However
10# these could still be matched by other protocols that use ASN.1 encoding
11
12# Contributed by Goli SriSairam <goli_sai AT yahoo.com>
13
14# This pattern has been tested and is believed to work well.
15
16# All SNMPv1 traffic.  See snmp-mon.pat and snmp-trap.pat for details.
17snmp
18^\x02\x01\x04.+([\xa0-\xa3]\x02[\x01-\x04].?.?.?.?\x02\x01.?\x02\x01.?\x30|\xa4\x06.+\x40\x04.?.?.?.?\x02\x01.?\x02\x01.?\x43)
19