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This solution leverages snmptrapd to initially pull the trap off the wire, apply access control, translate, then forward it to rsyslog. rsyslog then puts the translated trap in a log file to be processed by opEvents. opEvents then applies filtering, parsing and actions as appropriate.
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SNMP Trap Processing - Line Diagram snmptrapd--> rsyslog--> /var/log/nmis/syslogSnmpTrap.log --> opEvents --> Blacklist --> EventParserRules --> clarogtSnmpTrapParserPlugin.pm |