[M@sprackle.org ~]$

These are some awesome videos for iptables; I really enjoyed them and if you as well make sure you tell the guys over at Linux Journal.
I find embedded videos annoying so I’m just putting these links up.

Mastering IPTables by Linux Journal

http://www.linuxjournal.com/

IPTables Episode one

IPTables Episode two

IPTables Episode three

This is just a great video and link to the Enterprise IPA Server.
Red Hat IPA Server