[fw-wiz] TCP/IP filtering concepts presentation

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From: "Small, Jim" <jim.small@eds.com>
To: firewall-wizards@honor.icsalabs.com
Date: Wed, 26 Feb 2003 13:31:33 -0500

I'm going to do a presentation on TCP/IP filtering concepts in March. In
fact, if anyone near Detroit, Michigan in the States is interested...
http://www.mug.org/meeting_location.php

The presentation will be around an hour. I'm looking for ideas on what to
present. Here's what I'm thinking:
o Run through the IP, UDP, and TCP headers
o Cover TCP flags (including valid/invalid combinations)
o Run through sequence numbers to explain how "statefullness" works
o Run through ICMP including the various types, including which types are
necessary for the Internet to function correctly
o Explain how NAT works including PAT and IP to IP mapping
o Quickly walk through port forwarding, redirection, and "bouncing"

o Finally I'm thinking of running through some of the major firewall
products such as Check Point's FireWall-1, Cisco's PIX, Netscreen's
appliances, Secure Computing's Sidewinder G2, Sun's SunScreen, and
OpenSource firewalls including IP Filter, pf, IPTables, and ipfw.

I have a lot of good sources to draw on including Stevens TCP/IP Illustrated
series and O'reilly's Building Internet Firewalls.

Does anyone have any recommendations, suggestions, or ideas that I am
missing? Also, if anyone has any material or sites they think would be
helpful, I'd be grateful.

Thanks,
   <> Jim
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