[Snort-sigs] Yahoo Messenger signature

tyler at ...337... tyler at ...337...
Wed Feb 6 09:12:03 EST 2002

True, but that's the problem with Yahoo.. it can run over any port like
AOL.. :-\ .. looks like 80, 23, 20, 21, 119, 25, and 5050.  Perhaps a port
range like, less than 119 or 5050? .. 

-----Original Message-----
From: Michael Scheidell [mailto:scheidell at ...249...]
Sent: Wednesday, February 06, 2002 11:36 AM
To: tyler at ...337...
Cc: snort-sigs at lists.sourceforge.net
Subject: Re: [Snort-sigs] Yahoo Messenger signature

> alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"Yahoo Messenger
> content:"|594D534709|"; \
> depth:5; flags:AP+; classtype:misc-activity; resp:rst_all;)

What about a port range? this will 'scan' the first 5 bytes of every

Michael Scheidell
Secnap Network Security, LLC
(561) 368-9561 scheidell at ...249...
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