Resolving External IP address Internally

[texanpenguin]

I have a Netgear DG834G router which is set up to update my DynDNS.org account with my current IP address so that other people can resolve my iMac's hosted webpages.

Inbound port 80 requests are forwarded to the iMac and that all works a treat.

The problem, though, is that I'd like to be able to view pages on the iMac locally by using the dyndns URL, rather than a local IP (which is essential because I currently have a WordPress blog on the server which needs to know its own path as being some external path).

Currently, whenever I visit my external IP (or by inference my dyndns URL), it tries to resolve the page on the router itself instead of forwarding it through to the iMac. Obviously redirecting LAN requests to port 80 through to the iMac instead of the router setup page is fine by mesince I can change the router setup to port 8080 if I like, but I don't even know how to tell LAN computers to abide by WAN firewall rules.


Any help you can provide would be much appreciated. Currently I'm forced to use an online proxy service.