Air gap (networking)
Network security measure / From Wikipedia, the free encyclopedia
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This article is about network security. For other uses, see Air gap.
An air gap, air wall, air gapping[1] or disconnected network is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.[2] It means a computer or network has no network interface controllers connected to other networks,[3][4] with a physical or conceptual air gap, analogous to the air gap used in plumbing to maintain water quality.