noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The notional part of a network configuration which isolates computers physically from connection to a wider network such as the Internet.
2. 2
   A secure networking solution that uses Host Identity Protocol to make the network invisible to hackers while still allowing endpoints to communicate with the broader network.

Synonyms

All synonyms

air gap

Etymology

From air + wall, by analogy with firewall, than which it is more secure.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.