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Firewall Wizards: Re: Botnets, IRC servers and firewalls?

Re: Botnets, IRC servers and firewalls?

From: Paul Robertson <proberts_at_patriot.net>
Date: Tue, 3 Feb 2004 08:45:01 -0500 (EST)

On Tue, 3 Feb 2004, Gadi Evron wrote:

> > I've yet to see a business need for BotNet clients to run successfully ;)
>
> Perhaps application filtering for the Drone control protocol?

Much better done in a controlled lab environment than on a production
network. The bot connecting to a captive server isn't what I'd consider
"successful."

> Drone armies, although massive are nothing special.
>
> They are usually built of the same 2-4 Trojan horses that are big at
> that time.

Yep, but the point I'm making is that we have widespread infections inside
companies "protected" by firewalls- while the firewalls are perfectly
capable of supporting sane security policies that would block the 98th
percentile of these things.

> Filtering the traffic for their control protocol, on whatever port, or
> their repetetive echo commands/ special connections to IRC servers under
> certain IRC names or nickname/ident/name pattern-combinations is pretty
> easy to do when you come to think about it.

Exactly my point.

Paul
-----------------------------------------------------------------------------
Paul D. Robertson "My statements in this message are personal opinions
proberts_at_patriot.net which may have no basis whatsoever in fact."
probertson_at_trusecure.com Director of Risk Assessment TruSecure Corporation
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Received on Feb 03 2004

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