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Re: Directly attacking a firewall
From: racer32 () hotmail com
Date: Wed, 2 Mar 2011 02:06:49 -0700

I'll tell you how hard and how long. A firewall is a bunch of asics, a CPU, memory and storage. Its basically an 
application specific computer. Thus, find a vulnerability within the system that has not been patched yet and exploit 
it. Though the much easier and more frequently used attack against a firwall is an event driven DDoS attack such as a 
spoofed DNS attack. Frequently, if the firewall is configured to perform certain Layer 4-7 inspections such as HTTP, 
DNS, SMTP, and it does or even does not use ASICs to route those lookups, you can overwhelm it and the CPU with bogus 
lookups at a really high rate. This will destroy the traffic passing through it.

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