That's how I did it, with persistent or app triggered
port forwarding for port 80.
App triggered works fine with DHCP addresses on the LAN.
Persistent forwarding requires assigning a static LAN IP
to the server (a 192.168.2.x address) and then forward
port 80 to that IP. You choose.
People access the server using the public IP for the
router -- the IP from your ISP. (The router only supports
one IP from the ISP in router mode)
BTW, make sure that you have firmware 1.11.017 so
loopback is supported by the router, otherwise you cannot
reach the server using the public IP from machines within
the LAN -- which makes it trouble for testing.
>-----Original Message-----
>Hi, I have setup my MN-500 router using a static IP, and
>connected several desktop computers and a webserver to
>it. I cant figure out how to configure the router to use
>a different static IP address to access the server
(which
>is behind the firewall) to the "outside" world.
>
>Does anyone have any suggestions? Virtual DMZ doesnt
>really work because it doesnt map a static IP to an
>internal IP. Can persistent port forwarding accomplish
>this?... and how?
>
>Thanks for any help or tips i can get! 
>.
>