DMZ

abbr.
demilitarized zone

(DeMilitarized Zone) A middle ground between an organization's trusted internal network and an untrusted, external network such as the Internet. Also called a "perimeter network," the DMZ is a subnetwork (subnet) that may sit between firewalls or off one leg of a firewall. Organizations typically place their Web, mail and authentication servers in the DMZ. DMZ is a military term that refers to the area between two enemies. See bastion host and firewall.

The DMZ

All servers exposed to the Internet (the bastion hosts) are located in the DMZ, which is isolated from the public Internet and the private LAN by screening routers.

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[common] Literally, De-Militarized Zone. Figuratively, the portion of a private network that is visible through the network's firewalls (see firewall machine). Coined in the late 1990s as jargon, this term is now borderline techspeak.

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