How to set up port forwarding on different routers.
- Login to your modem at http://192.168.1.254 (or whatever the default gateway is set to)
- Click on the Firewall tab at the top
- Click on NAT/Gaming
- Click on Custom Services and fill out the fields as necessary and save and return to the previous page
- Back on the NAT/Gaming main page, choose the Service you just created, and then choose the appropriate device in the Needed by Device field.
- Click Add.