In military terms, a demilitarized zone (DMZ) is an area, usually the frontier or boundary between two or more groups, where military activity is not permitted, usually by treaty or other agreement. Often the demilitarized zone lies upon a line of control and forms a de-facto international border.
Demilitarized zones have also unintentionally become wildlife preserves as they cause the land which they sit on to be too dangerous for construction. See also Korean Demilitarized Zone.
Generally, "demilitarized" means converted to non-military use or purpose, returned to a civilian field. In such meaning the term is oftenly used in former Soviet countries both in Western and local (transliterated) languages.
Computer networks
In computer network terms, a DMZ is a network or part of a network, separated from other systems by a firewall which allows only certain types of network traffic to enter or leave. In a typical example, a company will protect its internal networks from the internet with a firewall, but will have a separate DMZ to which the public can gain limited access. Public web servers might be placed in such a DMZ.
In military terms, a demilitarized zone (DMZ) is an area, usually the frontier or boundary between two or more groups, where military activity is not permitted, usually by treaty or other agreement.
In computer network terms, a DMZ is a network or part of a network, separated from other systems by a firewall which allows only certain types of network traffic to enter or leave.
DMZ was also the name of a proto-punk rock and roll band from Boston in the mid-1970s, who later became garage rock revivalists, The Lyres
The point of a DMZ is that connections from the internal and the external network to the DMZ are permitted, whereas connections from the DMZ are only permitted to the external network -- hosts in the DMZ may not connect to the internal network.
A DMZ is often created through a configuration option on the firewall, where each network is connected to a different port on the firewall - this is called a three-legged firewall set-up.
A stronger approach is two use two firewalls, where the DMZ is in the middle and connected to both firewalls, and one firewall is connected to the internal network and the other to the external network.
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