Since the topic of books and such are popping up recently. I thought I would let you all know about another good book I just picked up.

Incident Response: Investigating Computer Crime
By: Kevin Mandia and Chris Prosise
ISBN 0-07-213182-9
Osborne/McGraw-Hill Publishing
Web site: http://www.incidentresponsebook.com

It is an excellent book on networking security. As well the web site is not that bad either.