DMZ host
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In computing, some home routers (D-Link/Linksys/SMC/SOHO/Actiontec/Belkin) refer to a DMZ host.
These are pseudo DMZs, as they provide no security between that host and the internal network. That is, the DMZ host is able to connect to hosts on the internal network, but hosts in a real DMZ are prevented from doing so by the firewall that sits between them.
A home router DMZ host is a host on the internal network that has all ports exposed, except those ports forwarded otherwise.
The Xbox 360 and Xbox require this setting in order to work fully.
See also
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