Connect any other computer via Ethernet cable to an open port on the Netopia. That computer thinks it's a normal Web Server request, and responds accordingly.
I think that's neat.) More than ONE Web Server: You may have noticed I have been stressing only ONE computer that acts as a Web Server. You can have other machines in your LAN, serviced by a single WAN address, that also act as a Web Server. What the users in the outside world need to do is append :984 to the WAN IP-address to the Netopia.
In that form, the reference to to port 80, which would be my machine #1.
But "dicksters-domain.dnsalias.net:984" is a reference to the same WAN IP-address, but the Netopia will route it to port 80 on machine #4. Having added one other Web Server machine, I'm sure you realize how another pinhole with another name and External port can forward it to port 80 of another machine.
User Registration Form .lia-form-user-accepts-terms-of-service-entry .lia-form-error-text . User Registration Form .lia-form-captcha-entry .lia-recaptcha .lia-label-required-mark, .(1st digit of dest port)