You dont need to port forward, check the V.14 Update.
To host without port forwarding you must:----A: Have UPnP enabled on your router. There is often a simple radio button for this on your router configuration page.-OR-B: Have a router that does not randomize UDP origin ports. If you do not have UPnP your server's ping will show up as "---". In this case if your router is non-randomizing your server will still be join-able.
Go into Internet Explorer2. Type in the address bar: 192.168.1.13. Login using this: User name: Admin Password: Admin (If Admin doesn't work use Password.)4. Look around. UPnP is usually under Advanced/Advanced Options.5. Simply click Enable.6. Save.7. Play BL