Frequently Asked Questions
EtherGap provides real Layer 1 physical isolation for environments where software-only defenses are not enough.
What’s the difference between logical or virtual air gaps and EtherGap?
Logical or virtual “air gaps” typically rely on software controls, routing rules, firewall policies, VLANs, authentication layers, or other in-band mechanisms. Those may reduce access, but they do not physically remove the network path.
EtherGap creates real Layer 1 physical isolation. When the air gap is open, the protected path is physically disconnected. If a connection does not exist, attackers cannot traverse it.
Does anyone else make a true Layer 1 air gap with out-of-band control?
Most products described as “air gaps” are logical, virtual, policy-based, or software-controlled systems. EtherGap is different: it physically controls network connectivity at Layer 1 while being managed through an isolated out-of-band administrative interface.
This distinction matters because the control plane is separated from the network paths being protected.
How does one close or open the air gap?
EtherGap can open or close protected network paths through its administrative interface, scheduled operation, or authorized manual control depending on deployment requirements.
The goal is to make connectivity intentional, controlled, logged, and limited to the windows where it is actually required.
Can EtherGap help comply with regulations like NERC CIP?
EtherGap can support compliance efforts by providing physical isolation, controlled connectivity, scheduled access windows, and tamper-aware logging of administrative and isolation events.
Specific compliance obligations depend on the environment, architecture, and applicable regulatory requirements, but EtherGap can provide a strong technical control for reducing exposure and documenting isolation behavior.
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