Despite my best efforts, I still get very confused about ports and port mapping and need some help.... Here is my setup: I am using a Mac, 10.10.4. Router- Motorola SB6120 SURFboard 3.0 Extreme Connected to this is an airport extreme base station. I use Tunnelblick to connect to my VPN and use MuTorrent for P2P. My big question is if I want to have one dedicated P2P port for increased speed, how do I configure it between all these devices and programs......my router, basestation, MacOS preferences, AirVPN and MuTorrent. Each one has port mapping options and that is where I get lost. I definitely want to only allow connections through the "tunnel" and want to be as safe as possible and am just not sure how to work this. I've looked through the how-to's but still am confused. I appreciate any advice!