Firewalling Q

[Vulpes Velox]

On Tue, 18 May 2004 14:04:45 +0400
Schizik <schizik at mail.ru> wrote:

> 
> Greetings, gurus!
> 
> I do need to limit people from my internal LAN to access
> filesharing services like eDonkey, Mule, Kaza, etc
> 
> The problem is that it is can not be done with port ranges
> based ipfw rules, because ports can be changed by users
> in this programs.
> 
> What is I need some sort of setup which will analyze traffic
> going to and from people and based on recognition apply
> different firewall rules.
> 
> Can anyone recommend me an approach for this?

Look up info on what control ports and the like they all use. Block
those. ^_^