Digi Transport WR44: Can you set NAT on a GRE tunnel interface?

I have two ethernet interfaces, eth0 traffic will be routed through the cellular WAN, eth1 traffic will be routed through a GRE tunnel carried over the Cellular connection. Can I configure the GRE tunnel interface with NAT spcifically for ethernet1?


You can do nat on a gre tunnel you would have to use the firewall to NAT the packet as it enters and exits the tunnel and this would depend on where the traffic started.

there is an option under advanced in GRE to switch this on.

simple rule

pass break end from addr-eth1 /24 to any -> x.x.x.x

hope that helps



Thanks James, I’ll give it a go

Thanks James, works a treat!