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 From:  "Gary Sumner" <garysu at exchange dot microsoft dot com>
 To:  <andyiowalist at mchsi dot com>, <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] Can't seem to block bittorrent and other P2P traffic
 Date:  Thu, 3 Feb 2005 15:06:05 -0800
BT uses more ports that just those you listed...it depends on the
configuration of the client....for instance, my client at home uses a
port in the 17,000 range.

The best thing to do is to configure the BT client to limit upload
speed...for instance, to say 20kbps. That will allow a decent upload
while at the same time not hampering the download speed for the rest of
the house.

Or of course, you could look up you roommates client config and then
totally block that port if you wanted to get back at them :-)


-----Original Message-----
From: andyiowalist at mchsi dot com [mailto:andyiowalist at mchsi dot com] 
Sent: Thursday, February 03, 2005 1:45 PM
To: m0n0wall at lists dot m0n0 dot ch
Subject: [m0n0wall] Can't seem to block bittorrent and other P2P traffic

Running m0n0wall 1.2b3.  i have a WAN interface, a LAN interface
(gigabit only
with jumbo frames) and an OPT1 interface (fast ethernet and the rest).  
The LAN inteface IP is and the OPT1 interface is

For each interface, I have setup the following:

Proto    Source       Port       Destination    Port
TCP/UDP   *         6881-6889         *           *      (Drop)
TCP/UDP   *             *             *       6881-6889  (Drop) 

Is this correct? 

Now while a bunch of packets seem to be dropped, BitTorrent Traffic
still gets
through.  The problem is the upload shoots up and my cable modem
download speed
drops.  This is really annoying because I can't seem to convince one of
roommates that his BT usage is killing our download speed and affecting

I'm tempted to remove that everything goes out default in the OPT1 and
WAN, and
while allowing everything from LAN, restricting for ports 1-1024 (and a
few more
higher) on the OPT1.


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