Enter the ip address to forward these ports to into the Local IP box. If you are forwarding ports so you can run a program on your computer, you should enter your computer's ip address into that box. If you are forwarding a single port, enter that port number into the Internal Port, Ext Start Port and the Ext End Port boxes. If you are forwarding a range of ports, enter the lowest number of that range into the Internal Port, Ext Start Port box. Then enter the highest number of that range into the Ext End Port box. Use the Protocol drop down box to select the protocol type of the ports you are forwarding. Put a checkmark in the Enable checkbox.
1. Find your computer's local IP address (the one assigned by your router). You can find this by going to Start -> Run -> cmd.exe -> type in "ipconfig" (no quotes), press enter -> look at the address next to "IPv4 Address."
2. Type it into the Local IP box on your router's configuration page.
3. In "Internal Port," "External Start Port," and "External End Port," enter 27886, as that will probably be the port you will be using to host P2P.
4. Under "Protocol," select "Both."
5. Check the "Enable" box.
6. Click "Apply."
7. Try it out.