> One of the things I would like
> to do is determine if (when) our web server, which hosts our applications,
> is being port scanned.  How do I go about this?  Are there (free or cheap)
> tools that will help you do this?

The Snort Intrusion Detection System (IDS) is free software that will detect
port scans, etc. There are versions that run on UNIX and Windows. Check it
out at http://www.snort.org

-Rod


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