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[CISCO-IOS] SNMP Authentication Failure [0/5]

[CISCO-IOS] SNMP Authentication Failure [0/5]

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Detection Logic

alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[CISCO-IOS] SNMP Authentication Failure [0/5]"; content: "SNMP-3-AUTHFAIL"; default_proto: udp; default_dst_port: $SNMP_PORT; classtype: attempted-recon; xbits: set,recon,track ip_src,expire 86400; xbits: set,brute_force,track ip_src,expire 86400; parse_src_ip: 1; threshold: type suppress, track by_src, count 5, seconds 300; sid: 5000051; rev:11;)

Field Validations

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