Member Avatar for k2k

hi,
does anyone know how to setup a port# to each PC of my home network? say 192.168.1.1 is my gateway,, 192.168.1.2 is my linux machine. and my public ip is 1.2.3.4 ... how do i make my 192.168.1.2 a port#(ex: port# 10) so when i ssh from outside my home network, i can do something like "1.2.3.4:10" ?


thanks very much

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  • Latest Post Latest Post by sknake
Member Avatar for sknake

Its called port forwarding or NAT and the implemention depends on what type of router you have. If your router is a linux router you can use iptables:

#!/bin/sh
iptables -t nat -F
iptables -t filter -F
iptables -t nat -I PREROUTING -i eth0 -d 1.2.3.4 -p tcp --dport 10 -j DNAT --to-destination 192.168.1.2:10
iptables -t nat -A PREROUTING -d 1.2.3.4 -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.1.0/255.255.255.0 -j SNAT --to-source 1.2.3.4

If you have a netgear, linksys, etc firewall then you should be able to set up forward rules through the GUI on the router @ http://192.168.1.1

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