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Message-ID: <2147483647.1106344044@[192.168.2.101]>
From: pauls at utdallas.edu (Paul Schmehl)
Subject: Scan for IRC

--On Friday, January 21, 2005 5:34 PM -0600 RandallM <randallm@...mail.com> 
wrote:

> I am so sorry for interrupting the list. I'm trying to pick up IRC
> communications on the network. I've made some filters for Ethereal and
> Observer but can't seem to pick it up. I'm doing something wrong. Used the
> 6668-6669 ports. Any help?
>
You'll have a lot more success using something like snort or tcpdump to 
catch them.  For example, you could easily write a couple of rules that 
would catch any IRC communications, regardless of the port used.

alert tcp $HOME_NET any -> any any (msg:"IRC communications"; content: 
JOIN; sid: 1000000; rev:1;)
alert tcp $HOME_NET any -> any any (msg:"IRC communications"; content: 
PRIVMSG; sid: 1000001; rev:1;)

Paul Schmehl (pauls@...allas.edu)
Adjunct Information Security Officer
The University of Texas at Dallas
AVIEN Founding Member
http://www.utdallas.edu

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