Episode 27 — Network Zones: trusted, untrusted, and screened subnet decisions
Network zoning is a recurring theme in CloudNetX scenarios because it provides a simple, defensible way to structure trust and control access. This episode defines trusted zones as segments reserved for internal systems with strict controls and limited exposure, untrusted zones as areas where traffic originates from unknown or uncontrolled sources, and screened subnets as buffer zones designed to host services that must be reachable but must not expose internal assets. The first paragraph focuses on zone intent, explaining that a zone is not just an address range but a policy boundary with a clear purpose and expected behavior. It explains how zones help determine where to place security controls, where to enforce inspection, and how to reason about permitted flows, especially when scenarios require reducing exposure without breaking legitimate access.
