Routing on Linux

kanwar_rajan · 10-10-2004, 12:03 PM

hey i have a linux machine with 2 nics

i want to setup the box as a gateway for my network ( static router )

i dont want to do NAT , just a simple gateway

how do i do it on linux

i found a software zebra to implement but its quite advanced as it includes various routing protocols .
cant i do simple static routing on linux

if yes, please tell me how ?

thanx in advance

chort · 10-10-2004, 12:55 PM

All you have to do is enable IP forwarding, then it will forward any packets that are directed to it from one directly attached network to another network that it knows about (including the default route). If you wish to add routes to the kernel, either use the route command or the ip command. Note that route and ip are completely different and you have to pick which one you want to use and stick to it. Read their respective man pages to see what the difference is.

rabeea · 10-11-2004, 05:55 AM

hi,
To enable ip forwarding just enter this

#echo "1" > /proc/sys/net/ipv4/ip_forward

rest u have to enter routes using ip and route command