Why traditional perimeter-based security is failing and how to implement a Zero Trust Architecture (ZTA) across your Kubernetes clusters.
The traditional "castle and moat" approach to network security is no longer viable in a cloud-native, highly distributed world. Zero Trust Architecture operates on the principle of "never trust, always verify." Every request, whether internal or external, must be strongly authenticated, authorized, and encrypted. In this post, we discuss how to implement Zero Trust within Kubernetes using Istio service mesh for mutual TLS (mTLS), strict network policies for pod-to-pod communication, and short-lived identity credentials via OIDC. We also cover the operational overhead and how to monitor for anomalous lateral movement.