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Understanding the FireWall-1 State Table


{LANG_NAVORIGIN} Firewall CheckPoint
By: Lance Spitzner, 02/21/2004



The intent of this paper is to help you understand how Firewall-1's stateful inspection works. This table is how FW-1 maintains who is doing what and what connections are allowed based on the rule base. To help you better understand your own FW-1 stateful inspection table and validate my data, I have posted all the source code I used at the bottom of this page.

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