Port Forwarding a Router
In this case, it is probably OK to disable your firewall, as you are already being protected by the router.
To forward a port in your router manually:
- Find out what your IP address is.
- In Ubuntu, right click the Network Manager applet in the menu bar, and select 'Connection Information'. The address is probably something like 192.168.1.100, or 10.0.1.2.
- If you don't have Network Manager, open a Terminal and type 'ifconfig'. It will list information for each of your network devices. Find the one you are using, and use the number after 'inet addr:'.
- Open Transmission, go to preferences, and enter a number for the port. It is recommended you pick a random number between 49152 and 65535. Let's use 50001 for now. Then quit Transmission.
- Go into your router configuration screen. Normally this is done via your web browser using the address 192.168.0.1 etc.
- Find the port forwarding (sometimes called port mapping) screen. While the page will be different for each router generally you will enter something similar to the following:
- For 'Application' type 'Trans'.
- For 'Start Port' and 'End port' type in the port you chose in Step 2. eg 50001.
- For Protocol, choose Both.
- For IP address, type in your IP address you found in Step 1. eg 10.0.1.2.
- Check Enable.
- Click save settings.
For more comprehensive instructions specific to your router, click here and choose your router from the list.