SMC Networks SMC Barricade g SMC2804WBR - Manual (Page 80)

Configuring the Wireless Barricade g Router
70
DMZ
If you have a client PC that cannot run an Internet application
properly from behind the firewall, then you can open the client up
to unrestricted two-way Internet access. Enter the IP address of
a DMZ host to this screen. Adding a client to the DMZ
(Demilitarized Zone) may expose your local network to a variety
of security risks, so only use this option as a last resort.