RE: Fingerprinting Firewall
From: rzaluski (rzaluski_at_ivolution.ca)
To: "'intel96'" <firstname.lastname@example.org>, <email@example.com> Date: Mon, 11 Apr 2005 17:33:23 -0400
Another good way is to search job listings that deal with the company with
Online Job postings.. You can get a lot of information just from that
including such things as Firewall makes, models as well as their internal
architectures / systems.
CISO, Security and Infrastructure Services
iVOLUTION Technologies Incorporated
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From: intel96 [mailto:firstname.lastname@example.org]
Sent: Monday, April 11, 2005 2:21 PM
Subject: Re: Fingerprinting Firewall
One of the best way I have found to find out the type of firewall(s)
used is through the company's HR site, which sometimes has a completing
listing on firewalls, IDS, protocols, applications, and MUCH more.
When this does not work I also check firewall mailing list for
@targetcompany.com to see if anyone has posted.
Byron L. Sonne wrote:
>> We all know that, we can identify firewall using various methods and
>> tools like "firewalk".
>> Is there any method or tool available which will remotely fingerprint
>> and enumerate rule
> > base configured on the firewall?
> Well, more accurately put firewalk does not identify firewalls as much
> as it enumerates what kind of traffic will be passed as well as
> allowing you to figure out ACLs in use.
> Generally speaking I don't think you'll be able to come up with
> something along the lines of nmap that will allow you to determine
> what kind of firewall is in place. Certainly not reliably for all
> firewalls and in all situations; there's just to much variability in
> how rules can be configured or traffic scrubbed.
> What I do think is possible is the creation of a tool that will narrow
> the field down to a group of firewalls.
> However, I suppose that for peculiar situations, either from grievous
> design error or peculiar configurations, certain firewalls might stick
> out like a sore thumb. But my suspicions are that would be rare.