RE: Bittorrent - utorrent

["Erick Jensen" <ejensen () vibrant com>]

I would say, this is something that you can't control.  Yes, bit-torrent traffic can be encrypted, and it CAN run on 
443.  But I switched mine to a random port in the 14000 range.  Then I check mark the "encrypted only" box and say 
"good luck Comcast!".  


I think the only effective way of hindering bit-torrent is what some universities do.  They limit the bandwidth and 
allow only burst of full bandwidth.  That way they make bit torrent unbearable to use.  So far that's the only way to 
counter the bit-torrent traffic.   

Has anyone else heard of a better way?



-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Ove Dalgård Hansen
Sent: Wednesday, March 07, 2007 1:38 PM
To: focus-ids () securityfocus com
Subject: Bittorrent - utorrent

Hello Everyone,

I am in a bit of trouble,

On a network where i am configuring IDS - using ASA5510 + SSM module, we try to deny access to Bittorrent downloads - 
it consumes quite a bit of bandwith and is not allowed by the company's policy.
We try to filter bittorrent which succedes - but the utorrent changes protocol and goes by the SSL port 443 and thereby 
circumvent the IDS, since its not possible to see the encrypted traffic. 

Does anyone out there have a good idea of how i am to solve the issue?


Best Regards

Ove Hansen
IT-Quality A/S 
Banemarksvej 50F
Denmark - 2605




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