SMC Networks Barricade SMC2804WBR38 - Manual (Page 70)

Configuring the Wireless Barricade g Router
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(Demilitarized Zone) may expose your local network to a variety
of security risks, so only use this option as a last resort.
DDNS (Dynamic DNS) Settings
Domain Name – A series of alphanumeric strings separated by
periods, that is the address of a the Router network connection
and that identifies the owner of the address.
Dynamic DNS provides users on the Internet with a method to tie
their domain name(s) to computers or servers. DDNS allows your
domain name to follow your IP address automatically by having
your DNS records changed when your IP address changes.
The section also has a “Server Configuration” section that
automatically opens the port options checked in the Virtual
Server section. Simply enter in the IP Address of your server,
such as a web server, and then click on the port option HTTP
Port 80 so users can access your server from the WAN
connection (Internet).