Re: Making FORWARD_IPV4=YES permanent / DHCP multiple routers

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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?

Modify /etc/sysctl.conf :
# Controls IP packet forwarding
net.ipv4.ip_forward = 1


CM

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