You can use v5's IPS to detect the GET command on ports other than 80 which is typically Gnutella traffic. This is a problem if you're using the HTTP proxy. It causes false alarms. You could manually edit the rule to chnage the !80 to !. There are GPL tools available that can be run on Linux to detect and/or block P2P traffic but it would require hacking ASL.
You can use v5's IPS to detect the GET command on ports other than 80 which is typically Gnutella traffic. This is a problem if you're using the HTTP proxy. It causes false alarms. You could manually edit the rule to chnage the !80 to !. There are GPL tools available that can be run on Linux to detect and/or block P2P traffic but it would require hacking ASL.