IDS mailing list archives
Re: Bittorrent - utorrent
From: Tremaine Lea <focus-ids () ddiction com>
Date: Fri, 9 Mar 2007 21:40:50 -0700
You mean free solutions?Block initiating traffic outbound to any port except those required for business purposes would be an excellent start.
Deploy snort at the perimeter and enable the signatures that fit your environment and address your concerns about network abuses. Choose a web front end that appeals.
Audit machines on a regular basis to find unauthorized software.Use a proxy server (squid is free and very powerful) for all outbound web connections, and block traffic to disallowed sites.
And having said all that, make sure you have a policy in place that can be enforced. If no such policy is in place, you can't reasonably expect users to adher to unwritten rules. Get a policy, get users to sign that policy, and enforce it both technically and via HR routes.
There are definitely any number of commercial solutions that would do all of the above and more.
Tremaine Lea Network Security Consultant On 9-Mar-07, at 4:02 PM, Erick Jensen wrote:
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 HansenSent: 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---------------------------------------------------------------------- --Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT.Go to http://www.coresecurity.com/index.php5? module=Form&action=impact&campaign=intro_sfwto learn more.---------------------------------------------------------------------- ------------------------------------------------------------------------ --Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT.Go to http://www.coresecurity.com/index.php5? module=Form&action=impact&campaign=intro_sfwto learn more.---------------------------------------------------------------------- --
------------------------------------------------------------------------ Test Your IDS Is your IDS deployed correctly? Find out quickly and easily by testing it with real-world attacks from CORE IMPACT. Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaign=intro_sfw to learn more. ------------------------------------------------------------------------
Current thread:
- Re: WAS: Bittorrent - utorrent NOW: Certificate Talk, (continued)
- Re: WAS: Bittorrent - utorrent NOW: Certificate Talk Randal T. Rioux (Mar 19)
- Re: WAS: Bittorrent - utorrent NOW: Certificate Talk Tremaine Lea (Mar 19)
- RE: WAS: Bittorrent - utorrent NOW: Certificate Talk Erick Jensen (Mar 20)
- Re: Bittorrent - utorrent Roland Turner (Security Focus) (Mar 14)
- Re: Bittorrent - utorrent Tremaine Lea (Mar 12)
- Re: Bittorrent - utorrent Stephen Clowater (Mar 12)
- RE: Bittorrent - utorrent Velasquez Venegas Jaime Omar (Mar 12)
- Re: Bittorrent - utorrent Tremaine Lea (Mar 19)
- Re: Bittorrent - utorrent David J. Bianco (Mar 19)
- Re: Bittorrent - utorrent Rocky (Mar 29)
- Re: Bittorrent - utorrent Albert Gonzalez (Mar 20)