Port forwarding (sometimes referred to as tunneling) is the act of forwarding a network port from one network node to another. This technique can allow an external user to reach a port on a private IP address (inside a LAN) from the outside via a NAT-enabled router.
Port forwarding allows remote computers (e.g. public machines on the Internet) to connect to a specific computer within a private LAN.
For example:
* forwarding ports 80 or 443 to run an HTTP webserver
* forwarding port 22 to allow Secure Shell access
* forwarding port 21 to allow FTP access
What port to use? Well generally it is accepted that everything above 30.000 is good.
How to open a port for torrent? Well on this site you will find good guides to many router types.
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