Fwd: IPTABLES Help

[shali Kallumpuram]

Dear all,

anybody please help me to block torrent files downloading through squid or
iptables,  or any other 3rd party tool for linux machine.

Shali K R

Message: 3
Date: Fri, 30 Oct 2009 03:59:53 -0400
From: fyrbrds at netscape.net
Subject: Re: IPTABLES Help
To: ubuntu-users at lists.ubuntu.com
Message-ID: <8CC274E192D1BBE-2564-12B3 at webmail-stg-d12.sysops.aol.com
>
Content-Type: text/plain; charset="us-ascii"


 Most bittorrent clients are no longer using standard ports. Blocking it
without knowing what port it will be on requires some sophisticated packet
inspection. Comcast was using 3rd party software to do this and injecting
session termination packets into the stream to disrupt the connections. I
don't remember the name of this comcastic software but you can google it.
This solution will not be cheap however so you have to really NEED to block
it to be worth the cost. AFAIK, the only way you can do it is to have a
white list of ports and/or client machines for your proxy to filter. This
will have marginal success as I have busted this blockade myself on many
occasions. Also, this approach won't stop bittorrent through tunneling which
can pretty much get around anything you do as long as you have an open
connection. Probably the best you can do is take the simple route like AT&T
and impose draconian bandwidth limits.


---------- Forwarded message ----------
From: shali Kallumpuram <vidyaserveradmin at gmail.com>
Date: Fri, Oct 30, 2009 at 12:46 PM
Subject: IPTABLES Help
To: ubuntu-users at lists.ubuntu.com


Dear all,

i need help in blocking bittorent files downloading through proxi, we are
using squid proxi,  any help??/


Shali K R
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