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# SNMP Monitoring - Simple Network Management Protocol (RFC1157)
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# Pattern attributes: good veryfast fast subset
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# Protocol groups: networking ietf_internet_standard
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# Wiki: http://en.wikipedia.org/wiki/SNMP
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# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
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#
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# Usually runs on UDP ports 161
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#
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# These filters match SNMPv1 packets without fail, and are made
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# as specific as possible not to match any ASN.1 encoded protocols.
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# However these could still be matched by other protocols that
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# use ASN.1 encoding
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# Contributed by Goli SriSairam <goli_sai AT yahoo.com>
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# This pattern has been tested and is believe to work well.
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#
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# To get or provide more information about this protocol and/or pattern:
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# http://www.protocolinfo.org/wiki/SNMP
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# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers
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# SNMPv1 GET/GETNEXT/SET request and response
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# matches SNMP header
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# version \x02\x01
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# community \x04.+
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# PDU type [\xa0-\xa3] (GET/GETNEXT/SET/GETRESPONSE)
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# RequestId \x02[\x01-\x04].?.?.?.?
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# errorStatus \x02\x01.?
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# errorIndex \x02\x01.?
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# varbinds start \x30
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snmp-mon
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^\x02\x01\x04.+[\xa0-\xa3]\x02[\x01-\x04].?.?.?.?\x02\x01.?\x02\x01.?\x30
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