SMC Networks SMC7004ABR V.2 - Manual (Page 73)

Configuring the Barricade™ Router
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This DNS feature is powered by TZO.com. With a DDNS
connection you can host your own web site, email server, FTP
site, and more at your own location even if you have a dynamic
IP address. (Default: Disable)
UPnP (Universal Plug and Play) Setting
Enable UPnP by checking ON in the screen above. UPnP allows
the device to automatically:
•
dynamically join a local network.
•
obtain an IP address.
•
convey its capabilities and learn about the presence and
capabilities of other devices.(Default: OFF)