I know it is possible as I have seen it done.
On 15 Jul 2005, at 14:27, Justin Ellison wrote:
> This is practically impossible with a layer 3 device like
> m0n0wall. If
> you block a port to a modern p2p client, most of them will randomly
> change ports, many will even use port 80. The closest you can get
> is to
> create a 1k pipe and redirect all p2p rules to it - but you still
> eliminate the port hopping.