Allow P2P

Hi all.

I have small network in my company. I permited p2p but i have problem. I want to allow p2p only on 3 computers. Can some one tell me how to do it.

there are few ways how you can implement this.
one of them, create 4 firewall rules:
3 rules allowing p2p for specific clients,
and 1 rule (after 3 rules) that will drop p2p traffic for others.