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Demilitarized zone

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Demilitarized zone (DMZ) (also called a screened subnet) is

[a] network created by connecting two firewalls. Systems that are externally accessible but need some protections are usually located on DMZ networks.[1]
[a] host or network segment inserted as a “neutral zone” between an organization’s private network and the Internet.[2]
[a] [p]erimeter network segment that is logically between internal and external networks. Its purpose is to enforce the internal network's IA policy for external information exchange and to provide external, untrusted sources with restricted access to releasable information while shielding the internal network from outside attacks.[3]

References Edit

  1. NIST Special Publication 800-41.
  2. NIST Special Publication 800-45, Glossary, at A-1.
  3. DoD Directive 8500.1, at 18.

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