VPNs 1 story

As part of Network Standards & Protocols, VPNs is best understood through its own mechanism, dependencies, configuration choices, and interoperability constraints. Coverage uses VPNs architecture, VPNs protocol, VPNs configuration, and VPNs compatibility to explain how the layer works, what it depends on, and where compatibility or configuration matters. This keeps VPNs narrower than Network Standards & Protocols as a whole while giving readers enough context to compare approaches, understand expected behavior, and recognize when a problem-specific tag is the better fit.