2006-10-29 04:04:03 · 5 answers · asked by nmcuro 1 in Computers & Internet ➔ Internet
By default routers and firewalls close all 65535 TCP and UDP ports, since this stops anyone and everyone from opening connections to your computer, which could allow then to do all sorts of good and mostly bad things.
This is great at protecting your computer or network, until you want to accept incoming connections, to run a webserver for example. Without forwarding an external port through your router or firewall external traffic will never get through.
Port forwarding tells your router or firewall not to block by default external traffic on a certain TCP or UDP port or range of ports.
2006-10-29 04:17:54 · answer #1 · answered by s__i 3 · 0⤊ 0⤋
Port forwarding allows you to "forward" incoming traffic through and past a router to a device inside a firewall router. For instance you may wish to "telnet" to a router that is inside so you forward port 23 traffic to the router. The request goes directly to the intended device.
2006-10-29 04:12:55 · answer #2 · answered by john p 1 · 0⤊ 0⤋
port forwarding is a cheating way of opening up a port on your firewall so a program can communicate - Bi-directionally - with another computer or program.
2006-10-29 04:07:15 · answer #3 · answered by tsmoreland324 2 · 0⤊ 0⤋
Because otherwise your firewall won't let anything through that port.
2006-10-29 04:05:43 · answer #4 · answered by lordandmaker 3 · 0⤊ 0⤋
Are you referring to a computer or a ship??
2006-10-29 04:08:01 · answer #5 · answered by SYJ 5 · 0⤊ 0⤋