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# SNMP - Simple Network Management Protocol - RFC 1157
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# Pattern attributes: good veryfast fast superset
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# Protocol groups: networking ietf_internet_standard
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# Wiki: http://www.protocolinfo.org/wiki/SNMP
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#
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# Usually runs on UDP ports 161 (monitoring) and 162 (traps).
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#
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# These filters match SNMPv1 packets without fail, and are made as
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# specific as possible not to match any ASN.1 encoded protocols. However
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# these could still be matched by other protocols that 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 believed to work well.
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# All SNMPv1 traffic. See snmp-mon.pat and snmp-trap.pat for details.
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snmp
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^\x02\x01\x04.+([\xa0-\xa3]\x02[\x01-\x04].?.?.?.?\x02\x01.?\x02\x01.?\x30|\xa4\x06.+\x40\x04.?.?.?.?\x02\x01.?\x02\x01.?\x43)
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