damien stolarz blog : Blocking Peer-to-Peer File Sharing Programs with Cisco Firewall & Router

{ 2004 03 21 }

Blocking Peer-to-Peer File Sharing Programs with Cisco Firewall & Router

This is a nice synopsis of major P2P applications and their networking, in the form of a “how to block these apps”. Gives some insight on P2P and firewalls.

Posted by Damien Stolarz on Sunday, March 21, 2004, at 11:57 am. Filed under general. Follow any responses to this post with its comments RSS feed. Both comments and trackbacks are currently closed.

{ 1 } Comments

jwenting | March 22, 2004 at 4:11 am | Permalink

or take the reverse approach
and block all ports except a few very specific ones and link those to specific protocols and maybe even hosts (effectively allowing only HTTP and SMTP to go out and that only from the proxy server).