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
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