Parameterizing Kubernetes NetworkPolicies on GKE with Helm for Zero-Trust Pod Networking

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A DEV Community article explains how to apply zero-trust networking to pods on Google Kubernetes Engine (GKE) using Helm templates. It shows how NetworkPolicy resources can be parameterized so that default-deny behavior and per-application access rules are configured from values files. The example defines a backend-access policy that allows frontend clients to reach the backend application on port 80. The approach aims to make network segmentation reusable and easier to manage across deployments. The excerpt provided is partial template and YAML code, so the full scope of the guidance is not shown.

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