Snort mailing list archives

Re: Using resp against a virus -> LaBrea plugin?


From: Frank Knobbe <fknobbe () knobbeits com>
Date: 09 Jul 2002 22:23:08 -0500

On Tue, 2002-07-09 at 21:39, Jeff Kell wrote:
Michael Boman wrote:

On Wednesday 10 July 2002 05:39, Jeremy wrote:

   I was just curious if resp could be used to reset the connection when an
email virus matches a rule. For example we get tons of Klez matches on our
external snort box and I was wondering if we could use resp to reset the
connection before it hits the smtp server.

If you reset the SMTP transmission the SMTP server on the other end will try
again and again and again... You get the idea...

<rant>
Viruses should be stopped by a ANTI VIRUS software, NOT with a IDS software.

Oh, I don't know, there's a certain satisfaction in tying up the sender
SMTP and adding to their outbound queue...


Man! You just gave me an idea. How about a LaBrea plugin for Snort so
that if a connection matches a signature, the connection will just be
kept hanging like LaBrea does it! That oughta take care of viruses and
worms alike...

Frank


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