air gap

See also: airgap

English

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air gap (networking)

Wikipedia

air gap (plural air gaps)

(networking, computer security) A network security measure that consists of ensuring that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.
Synonym: airwall
- 2016, William D. Bryant, International Conflict and Cyberspace Superiority: Theory and Practice, Routledge, →ISBN, page 153:
  The structure and design of Stuxnet confirms the Iranian air gap, as the attackers clearly designed Stuxnet to jump an air gap utilizing multiple methods.
- 2019 September 17, Edward Snowden, Permanent Record, New York, N.Y.: Metropolitan Books/Henry Holt and Company, →ISBN:
  The day after Lindsay left, I took an emergency medical leave of absence from work, citing epilepsy, and packed scant luggage and four laptops: secure communications, normal communications, a decoy, and an “airgap” (a computer that had never gone and would never go online).
A gap where there is a vacuum (not actually air), used to reduce power consumption in microelectronics.
A type of spark gap using a tube filled with air (which is mostly nitrogen), nitrogen alone, or other gases.

network security measure