Definition
A Secure Gateway is an intermediary solution between networks or services that controls, filters and secures data flows according to an adopted security policy.
Human Explanation
It provides a controlled crossing point between environments and checks whether traffic meets defined security requirements.
Why it Matters
Centralised traffic control supports consistent policy enforcement and limits unauthorised communication.
Conceptual Boundary
A Secure Gateway is not one device or specific technology. It is an architectural role that different solutions may perform.
Practical Perspective
A Secure Gateway creates most value as part of coherent Security Architecture rather than as an isolated control.