KubeDojo

Minimizing External Network Access

AK
by Alexis Kinsella··18 min read
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

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