Tim Alberts wrote:
> First,
>
> I'd like to configure my system to forward ip, to act as a gateway for
> my network. I've always used a script during startup to do this:
>
> echo 1 > /proc/sys/net/ipv4/ip_forward
> iptables -t nat -A POSTROUTING -o ${UPLINK} -j SNAT --to ${IP_NAT}
>
> This works fine, however I want this permanent so I don't have to run
> the script on startup. I have the firewall setup with SNAT fine, but
> when I write the file /etc/sysconfig/network with the line
> 'FORWARD_IPV4=YES' it still doesn't enable the ip forwarding after boot?
>
> cat /proc/sys/net/ipv4/ip_forward
> 0
>
> So how do I do this?
>
>
You want to modify the /etc/sysctl.conf file:
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
That change will take effect the next time the system is rebooted; or,
you can type:
/sbin/sysctl -p
which will load the values specified in /etc/sysctl.conf immediately.
-Greg