Minimizing External Network Access

Minimizing external network exposure requires layered controls beyond Kubernetes NetworkPolicies: host-level iptables rules, explicit NodePort restrictions, outbound traffic policies, and namespace segmentation to contain breach scope.
Minimizing external network access addresses Domain 3.6 in the CKS blueprint: "Restricting network access to the cluster and its components". The exam explicitly tests understanding of:
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CKS — Certified Kubernetes Security Specialist
25 lessons