Check out the companion sites for these books:
Building Linux and OpenBSD Firewalls
by Wes Sonnenreich and Tom Yates
The companion Web site for is full of information on resources
for Security, OpenBSD, and Linux.
GUIDE TO SEARCH ENGINES
by Wes Sonnenreich and Tim Macinta
Click here to go to the companion Web site
Timely. Practical. Reliable.