How to forward ports on the O2 Wireless Box II/III/IV

Firstly, do try to get UPnP working. UPnP is designed to forward ports automatically, and most applications and devices use it. See Enabling UPnP.

If you still cannot get your application to work properly, use the following instructions for port forwarding. Before you do so though, you should set your devices to get their IP address automatically via DHCP. Configuration options on devices vary, but here are some instructions for Windows: Getting your computer's IP address via DHCP.

1) Click http://192.168.1.254/ . If you are prompted for a login the username is "Administrator" and the password is the serial number of your router (printed on its underside, excluding the bit in brackets).

2) Click on the name of your device in the "Home Network" area, e.g. mypc1.

3) Click Configure (top-right of screen), tick "Always use the same address", then click Apply.

4) Click Toolbox > Game & Application Sharing > Create a new game or application.

5) Enter the name of your application, e.g. My_game, click "Manual Entry of Port Maps", then Next.

6) In the list below Protocol, select the protocol of your application (e.g. TCP). In the two boxes below "Port Range", enter the port number of your application, e.g. 5070, then click Add. Repeat this step for all the ports you need forwarded.

Please note: Entering a range of ports e.g. 5070 to 5075 can be unreliable. In this instance, enter them one by one, e.g. 5070, 5071, 5072, etc.

7) Click "Assign a game or application to a local network device".

8) Select your newly created game in "Game or Application", select your device in Device, then click Add.

Your game or application should now be accessible from the internet.