SMC Networks Barricade SMC7004ABR User Manual page 64

Configuring the Barricade Router
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.
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