shdesigns,
Thanks for the reply. Based on your comments, I searched the router manual (TRENDnet TEW-633GR) for the word 'loop' and found the following:
You might have trouble accessing a virtual server using its public identity (WAN-side IP-address of the gateway or its dynamic DNS name) from a machine on the LAN. Your requests may not be looped back or you may be redirected to the "Forbidden" page.
This will happen if you have an Access Control Rule configured for this LAN machine.
The requests from the LAN machine will not be looped back if Internet access is blocked at the time of access. To work around this problem, access the LAN machine using its LAN-side identity.
Requests may be redirected to the "Forbidden" page if web access for the LAN machine is restricted by an Access Control Rule. Add the WAN-side identity (WAN-side IP-address of the router or its dynamic DNS name) on the Advanced Web Filter screen to work around this problem.
I do not have an Access Control rule set (but I tried creating one, and that did not help). I did not see anything related to private IP addresses on the WAN interface. Seems that I may be SOL...
