In my opinion, the above unsubscribe friend does not understand the essence.
port forwarded on the router with dd-wrt (iptables), that is Your web-server does not receive the real address in any way, whether it is at least Apache, though, engenx, at least something.
So do not bother.
In Your case the output is — only if you have the opportunity to put on dd-wrt proxy forwarding to your internal web server. But if You have a router allows.