How to shared my wired broadband internet connection to other system with 2 LAN card

karthickk02 · 09-16-2010, 06:59 AM

I'm using RedHat Linux. In my friend system have Winxp. I have 2 LAN Cards. I'm using wired Broadband internet. So i want to share my internet connection to my friend system through another one LAN card. How can i do this

suprstar · 09-16-2010, 08:33 AM

So you have one LAN card (call it eth0) connected directly to your cable modem, and the other (eth1) to the internal LAN (or your friend's PC)?

Create a route for your internal LAN to make eth0 the default gateway (if it isn't already) using 192.168.0.1 as the internal facing IP of your cable modem:

Code:

route add default gw 192.168.0.1 eth0

enable routing, and point your friend's PC to your linux box's eth1 interface's IP to use as a gateway.

There's also a gui interface to set up all your networking parameters:

system-config-network

suprstar · 09-16-2010, 08:48 AM

btw:

Code:

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

to enable routing for now.

add

Code:

FORWARD_IPV4=true

to /etc/sysconfig/network make it route when the OS boots.