Try putting in /etc/sysctl.conf the line
net.ipv4.ip_forward = 1

Steven Yellin

On Wed, 11 Jul 2007, vivek chal wrote:

> Hi all!
>
> I have made Gateway of my DNS by using the following iptables rules:
>   iptables --flush
>   iptables --table nat --flush
>   iptables --delete-chain
>   iptables --table nat --delete-chain
>   iptables --table nat --append POSTROUTING --out-interface eth0 -j
> MASQUERADE
>   iptables --append FORWARD --in-interface eth1 -j ACCEPT
>   echo 1 > /proc/sys/net/ipv4/ip_forward
>   iptables-save
>
> My gateway is working fine but the only problem is that i have to run
> echo 1 > /proc/sys/net/ipv4/ip_forward
> everyday after booting my server in order to make my gateway up.My clients
> can't ping any site untill i give this command. i have made service iptables
> to start at boot time.
> Could anyone tell me where i am doing wrong.
>
> -- 
> Vivek Chalotra
> GRID Project Associate,
> High Energy Physics Group,
> Department of Physics & Electronics,
> University of Jammu,
> Jammu 180006,
> INDIA.
>