Kubernetes
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Why this exists By default, every Pod in a Kubernetes cluster can talk to every other Pod, in any namespace. That's convenient for a demo and a real liability in production — a compromised Pod in one namespace can…
NetworkPolicy Starter: Default-Deny + Explicit Allow
A default-deny NetworkPolicy for a namespace, plus a companion policy explicitly allowing exactly the traffic that's actually needed — the pattern every real NetworkPolicy setup starts from.
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