Message parsers help you parsing the message fields. The syslog message written into the message field often is in another syslog format which you might want to split up into their respective fields. And therefore you will most likely need a message parser. There are many different devices out there, which have a different log format, that we need different message parsers for.
This message parser permits LogAnalyzer to understand native Windows Event Log fields (like eventid, catagory, etc) as reported by Adiscon EventReporter and MonitorWare Agent.