You might have encountered the term Port Forwarding when configuring bittorrent on your computer or analyzing slow or none existing traffic with bittorrent. One of the first answers of those helpful support guys in all forums is always check Port Forwarding, but what the heck is it ?
Port Forwarding can be described as a way to tell your router to send specific traffic to a specific computer inside the network. For bittorrent it would mean that the bittorrent ports that are used are forwarded to the network device that is running your bittorrent client.
Bittorrent is however not the only possible application. You could forward requests for port 21 to a home ftp server or requests for port 80 to a web server.
The Port Forwarding Tester tests if this is setup correctly. This can be done by simply entering the computers IP and the port that you want to check. The port forwarding script scans for your IP by default, you only need to change it if you want to test a different computer that has a different IP.
If the result is that the port is blocked at that IP Port Forwarding is not setup properly. A great site to find out how you setup port forwarding for your router is the website Port Forward which has instructions for hundreds of routers.
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Port Forwarding Tester
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