air gap
Void between surfaces
An air gap is a physical separation between two systems that prevents direct connection, especially in computing where a computer isolated from networks is said to be air-gapped: The classified system maintains an air gap from the internet.
The term also describes literal gaps filled with air rather than solid material, as in electrical insulation or building construction.
Network access control system
- offlineNot internet-connected
- disconnectedSeparated from a source
- sneakernetPhysical data transport
- critical infrastructureEssential services and facilities
exfiltration · side-channel · USB transfer · security policy · access control · defense in depth · encryption · confidentiality
Thermal transfer prevention
- dielectricPolarizable electrical non-conductor
- clearancePermitted passage or approval
- creepageGradual surface migration
- high voltageDangerous electrical potential
grounding · safety barrier · flashover · potential difference
Thermal transfer prevention
- double-glazingTwo-layered window glass
- heat transferMovement of thermal energy
- R-valueInsulation effectiveness measure
- cavity wallWall with internal gap
Component reading magnetic media
- hard driveComputer's internal storage device
- recordingCaptured audio or video
- fluxContinuous change or flow
- magnetic storageData kept via magnetism
Curved pipe holding water
- sewer gasFumes from waste pipes
- cross-connectionImproper pipe linkage
- potable waterLiquid safe for consumption
- sanitaryFree of harmful microbes
fixture · water supply · P-trap · standpipe
firewall
Network access control system
- offlineNot internet-connected
- disconnectedSeparated from a source
- sneakernetPhysical data transport
critical infrastructure · exfiltration · side-channel · USB transfer · security policy · access control · defense in depth · encryption · confidentiality
insulation
Thermal transfer prevention
- dielectricPolarizable electrical non-conductor
- clearancePermitted passage or approval
- creepageGradual surface migration
high voltage · grounding · safety barrier · flashover · potential difference
insulation
Thermal transfer prevention
- double-glazingTwo-layered window glass
- heat transferMovement of thermal energy
- R-valueInsulation effectiveness measure
tape head
Component reading magnetic media
- hard driveComputer's internal storage device
- recordingCaptured audio or video
- fluxContinuous change or flow
drain trap
Curved pipe holding water
- sewer gasFumes from waste pipes
- cross-connectionImproper pipe linkage
- potable waterLiquid safe for consumption
sanitary · fixture · water supply · P-trap · standpipe
- Airflowairflow, vent, exhaust, intake, airstream
- barrierswalls, wall, fences, fence, barrier
- gapsrift, void, chasm, crack, crevice
- plumbingpipes, valves, fittings, faucets, drains
- plumbing partsfaucet, valve, washer, drain, gasket
- crypto walletshardware wallet, cold wallet, mobile wallet, crypto wallet, self-custody
air gapdirect connection
internet connection · online · connected · networked · hardwired
air, gap, gaping, gape, airless, gapes, gaper, gappy, gap-toothed