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Re: Firewall rulebase automation - Grey Box assessment
From: Clement Dupuis <cdupuis () cccure org>
Date: Wed, 25 Jun 2008 14:06:57 -0400

Good day Arvind,

This seems like an interesting tool.

Does the tool identifies conflicting rules which is often time one of the main concern with a very large rulebase. For example, can it identify that rule 23 is doing nothing because there is a rule before that already allow the traffic.

Thanks a lot

Clement



arvind doraiswamy wrote:
Hi Guys,
Maybe there have been times when you have pentested a firewall. As
part of a grey box engagement you were assigned the task of auditing
that HUGE firewall rulebase and were stuck on how to proceed , just
because of the sheer volume of information. I hence have created a
little tool in Perl to help in auditing a rulebase and helping you in
narrow down on the weak rules. Obviously this is a big Work In
Progress and can be better but its a start and what I've written works
- Current support is just for Cisco PIX though the framework was
designed to scale across multiple firewalls and no major changes need
to be made.

Please come back to me with feedback on how I can make this better and
what I've missed in the first place. The code can be accessed at:
http://sourceforge.net/projects/fwauto

Thanks
Arvind Doraiswamy
Security Consultant - Paladion Networks
http://www.paladion.net

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