Great Circle Associates Firewalls
(December 1996)
 

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Subject: Definition required
From: steve . gailey @ nomura . co . uk
Date: Wed, 18 Dec 96 14:30:07 +0000
To: firewalls @ greatcircle . com

Perhaps the denizens of this list could assist with settling an argument?

I have been having a full and frank discussion about the correct definition of 
the three main types of Firewall will a colleague. We generally agree on packet 
filter, but we can't agree on the correct definitive definitions for circuit 
relay and application proxy.

My colleague sticks rigidly to Cheswick and Bellovin, while I tend to go more 
with the Firewalls FAQ view of things.

The problem is that application proxies are more and more starting to look to 
the casual observer like circuit relays.

I don't mean to start a flame war, but other views would be appreciated.

Steve


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