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What is a “Demilitarized Zone” (DMZ)?

April 26, 2017DMZ

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What is a “Demilitarized Zone” (DMZ)?

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The term “DMZ” is used to describe a firewalled network segment which is physically and logically separate from the primary, firewalled network segment. The DMZ network segment would have completely independent security rules applied to it.

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A demilitarized zone (DMZ) is a firewall configuration that provides an additional level of security. In this configuration, the DMZ is an extra network placed between a protected network and the Internet. Resources residing within the DMZ are visible on the public Internet, but are secure. DMZs typically hold servers that host a company’s public Web site, File Transfer Protocol (FTP) site, and Simple Mail Transfer Protocol (SMTP) server.