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How do you sort through specific Event IDs in audit logs?

Posted on 2006-11-29
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Last Modified: 2008-01-09
I know the answer is to use ausearch from a command line.  According to the ausearch man entry, the Event ID comes after the ":" in the msg=audit line entry.  As an example, msg=audit(1116360555.329:2401771) would mean that "2401771" is the Event ID.  But in looking though the audit.logs, it seems as if that number is simply a sequential marker.  Also, I've searched the Internet to try and find something more about Linux audit.log files but everything seems to be geared towards Windows Event IDs.

For instance, we would like to be able to see if a user has tried to access a file they are not authorized to open.  What Event ID would that be and how would we use ausearch to look for such events?

Is there a listing somewhere which gives the definitions of each individual Event ID and how to interpret them so that we can sort on specific events rather than having to cull though each 8M audit.log file?
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Question by:L3MS
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chris_calabrese earned 252 total points
ID: 18068680
Linux/Unix audit logs do not contain Event IDs in the same sense as Windows logs. That makes them a bit more difficult to parse though, but it also allows them to be more flexible in handling corner cases that the log system designers didn't think about ahead of time.

I haven't worked with Linux kernel audit logs so I can't give any specifics, but typically your best bet will be to write a Perl script that parses through the logs and pulls out the info you're interested in.
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by:kblack05
kblack05 earned 248 total points
ID: 18159792
Perhaps you should consider a logging interface such as Splunk, which can help you make MUCH more sense of your log files: http://www.splunk.com/
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