P2P apps port scanning

From:	=?iso-8859-1?Q?Nicol=E1s_Villar?= <nico at torino dot com dot ar>
To:	m0n0wall at lists dot m0n0 dot ch
Subject:	P2P apps port scanning
Date:	Thu, 07 Jul 2005 12:28:47 -0300

Hi, i'm planning use m0n0 as a firewall over my MAN with 150 usr (for now, later like 1000) but
still can't block traffic from Kazaa because the port scanning. I'm only open a few ports (80, 21,
443, and a couple more), but in my labs test the Kazaa is always connecting for some other port,
like 80...

any ideas?
Tankx

Nico.