DMZ (computing) DMZ (computing) In computer security, a DMZ or demilitarized zone (sometimes referred to as a perimeter network or screened subnet) is a physical or logical subnetwork that contains and exposes an organization's external-facing services to an untrusted network, usually a larger network such as the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's local area network (LAN): an external network node can access only what is exposed in the DMZ, while the rest of the organization's network is firewalled. The DMZ functions as a small, isolated network positioned between the Internet
Acronym shortened form, such as words with the middle omitted (for example, "Rd" for "road" or "Dr" for "Doctor"), an acronym is a word formed from the first letter or first few letters of each word in a phrase (such as "sonar", created from "sound navigation and ranging"). Attestations for "" in German are known from 1921, and for "acronym" in English from 1940. Although the word "acronym" is often used to refer to any abbreviation formed from initial letters, some dictionaries and usage commentators define "acronym" to mean an abbreviation that is pronounced as a word, in contrast to an