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Kubernetes NetworkPolicy Connectivity Simulator

Evaluate NetworkPolicy v1 selectors, isolation, peers and ports locally, map Services to Pods, and generate a directional connectivity matrix.

Pods, Namespaces, Services, and NetworkPolicies stay in this browser
The tool never contacts a cluster or probes a real network; anonymous events contain no names, labels, or manifests.

Network policy snapshot

Multi-document YAML/List and common workload Pod templates, up to 8 MiB and 5,000 objects.

Flow to test

Load the sample and analyze it, then choose any Pod pair to test direction, selectors, and ports.

About Kubernetes NetworkPolicy Connectivity Simulator

Explain Pod-to-Pod ingress and egress decisions. Evaluate NetworkPolicy v1 selectors, isolation, peers and ports locally, map Services to Pods, and generate a directional connectivity matrix. The core workflow is designed to run in your current browser.

Key capabilities

  • Require both source egress and destination ingress when isolated
  • Evaluate matchLabels, matchExpressions, namespace selectors and ipBlock
  • Compare every supplied Pod pair at the chosen port
  • Resolve Service selectors and target ports to backend Pods

Useful for

  • Review policy behavior before a rollout
  • Explain an unexpected allowed or denied Pod connection
  • Find default-deny gaps and plan namespace isolation

Frequently asked questions

Is Kubernetes NetworkPolicy Connectivity Simulator free to use online?

Yes. Kubernetes NetworkPolicy Connectivity Simulator opens in a modern browser and does not require desktop software installation.

What is Kubernetes NetworkPolicy Connectivity Simulator useful for?

Common use cases include Review policy behavior before a rollout; Explain an unexpected allowed or denied Pod connection.

Is my input or file uploaded?

The core processing workflow is designed to run locally in the browser. Key capabilities include Require both source egress and destination ingress when isolated, Evaluate matchLabels, matchExpressions, namespace selectors and ipBlock, Compare every supplied Pod pair at the chosen port; account, comments, and anonymous analytics may still create normal site requests.

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