Besides P2P traffic (uTorrent + eMule), I also download a lot of things from IRC. If I define a fixed dcc transfer port (8000), can I use it as the single port from which all IRC downloads will use? I ask this because when a client offers me a DCC connection, it always shows ports on the >40000 range. Also, connections to IRC servers use the range 6660-6669 or other port for secure connections. If I want to give them highest priority, are these the only ports I need to add?