Demilitarized zone

In the beginning, the demilitarized zone (or DMZ ) indicates the zone which separates the North Korea from South Korea in the neighborhoods of the 38 {{E}} parallel. It ensures that each of the two camps will be able to see an operation of the enemy of penetration of the zone (and thus a will of war). It is what one names in European terms a '' No man' S Land '' in the United Kingdom and a '' glacis '' in France.

In Computer security

A demilitarized zone is a sub-network (DMZ) isolated by two Pare-feu X (firewall). This sub-network contains machines being between a internal network (LAN - stations customers) and an external network (typically, Internet).

It is also defined as a zone, a sub-network to see even one arranges IP addresses (or only one IP address) on a network not being subject to the rules of Firewall.

The DMZ makes it possible these machines to reach Internet and/or to publish services on Internet under the control of the external fire wall. In the event of compromising of a machine of the DMZ, the access towards the lan is still controlled by the internal fire wall.

The figure opposite represents a particular case of DMZ; for reasons of economy, the two fire walls are amalgamated. It is the “collapsed dmz”, less sour, because as soon as the fire wall is compromised, plus nothing is not controlled.

The DMZ is also (on certain routers) the fact of redirecting all the ports towards a precise PC on a lan.

See too

demilitarized Korean Zone for the history of the zone which gave the name to this data-processing concept.
Fire wall
Computer security
Bastion (data-processing)

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