Log File Analysis

[Mark C Carollo]

I am looking for suggestions on programs that will analyze IIS log files. I want to be able to detect intrusion attempts/code red/nimda/etc. and output it in a format that is easy to understand so I can find trends. The program should be able to analyze multiple log files at once (i.e. log files are created daily and I want to be able to analyze a month or a year at a time).

-- Mark