Networking Company Links

http://www.expand.com/

These guys are really doing some cool stuff in Networking
Just check out the Videos

http://youtube.com/user/ExpandNetworks

http://public.lanl.gov/radiant/jobs.html

Hacking Techniques in Wireless Networks

http://www.cs.wright.edu/~pmateti/InternetSecurity/Lectures/WirelessHacks/Mateti-WirelessHacks.htm

A nice brief overview of most of the terms and tactics for internet security

video tutorials

http://security-freak.net/videos.html

contains video tutorials on
Hacking
worms
Architecture of A Proactive Security Tool
Packet Injection using raw Sockets
Packet Sniffing using Raw sockets.
Basic Socket Programming.

UNIX Socket FAQ

http://www.developerweb.net/forum/index.php

http://www.developerweb.net/forum/archive/index.php/f-62.html
(related to Socket Programming)