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Re: OPENVPN/IPTABLES help



On Wed, Nov 5, 2008 at 12:59 PM, woodson2 <mlstarling31 hotmail com> wrote:
>
> Hello, I have openvpn up and running successfully on FC9. I'm using routing
> mode with the following configuration
>
> My internal LAN range 10.10.10.0/24
> My Openvpn client range 10.8.0.0/24
>
> I can connect and ping the openvpn server from the openvpn client but can't
> talk to the other machines on the internal LAN subnet. However, the machines
> on the internal LAN subnet can ping the openvpn clients. I have entered the
> following in iptables.
>
>
>
> iptables -t nat -I POSTROUTING -s 10.10.10.0/24 -o eth0 -j MASQUERADE
> iptables -I INPUT -i tun+ -j ACCEPT
> iptables -I INPUT -i tap+ -j ACCEPT
> iptables -I FORWARD -i tap+ -j ACCEPT
> iptables -I FORWARD -i tun+ -j ACCEPT
> iptables -I INPUT -i eth0 -j ACCEPT
> iptables -I FORWARD -i eth0 -j ACCEPT
>
>
> I have also added a route on my d-link router that routes any traffic
> destined to 10.8.0.0/24 back to the OPENVPN server(10.10.10.xxx). This all
> works as it should when the firewall is disabled so apparently I'm missing
> some rule in iptables...Any help would be greatly appreciated..thanks..

Did you enable forwarding on the openvpn server?

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


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