```
kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}"
```

When using `Cilium` as a CNI in your cluster, please edit the `flavor` field to `cilium`.

With NetworkPolicy enabled, traffic will be limited to just port 9000.

For more precise policy, set `networkPolicy.allowExternal=true`. This will

* kubelet now accepts a --cni-cache-dir option, which defaults to /var/lib/cni/cache, where CNI stores cache files. ([#78908](https://github.com/kubernetes/kubernetes/pull/78908), [@dcbw](https://github.com/dcbw))

  manager. ([#114095](https://github.com/kubernetes/kubernetes/pull/114095), [@aimuz](https://github.com/aimuz))

### Other (Cleanup or Flake)

- Added automatic download of the CNI binary in `local-up-cluster.sh`, facilitating local debugging. ([#120312](https://github.com/kubernetes/kubernetes/pull/120312), [@HirazawaUi](https://github.com/HirazawaUi))

DefaultDeny namespace annotation. Note: this will enforce policy for *all* pods in the namespace: ``` kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}" ``` When using `Cilium` as a CNI in your cluster, please edit the `flavor` field to `cilium`. With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client...

- Updated CNI Plugins to v1.5.0. ([#125113](https://github.com/kubernetes/kubernetes/pull/125113), [@bzsuni](https://github.com/bzsuni)) [SIG Cloud Provider, Network, Node and Testing]

- Updated cni-plugins to [v1.5.1](https://github.com/containernetworking/plugins/releases/tag/v1.5.1). ([#126966](https://github.com/kubernetes/kubernetes/pull/126966), [@saschagrunert](https://github.com/saschagrunert)) [SIG Cloud Provider, Node and Testing]

- Updated CNI plugins to v1.8.0. ([#133837](https://github.com/kubernetes/kubernetes/pull/133837), [@saschagrunert](https://github.com/saschagrunert)) [SIG Cloud Provider, Node and Testing]

DefaultDeny namespace annotation. Note: this will enforce policy for *all* pods in the namespace: ``` kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}" ``` When using `Cilium` as a CNI in your cluster, please edit the `flavor` field to `cilium`. With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client...

DefaultDeny namespace annotation. Note: this will enforce policy for *all* pods in the namespace: ``` kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}" ``` When using `Cilium` as a CNI in your cluster, please edit the `flavor` field to `cilium`. With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client...

DefaultDeny namespace annotation. Note: this will enforce policy for *all* pods in the namespace: ``` kubectl annotate namespace default "net.beta.kubernetes.io/network-policy={\"ingress\":{\"isolation\":\"DefaultDeny\"}}" ``` When using `Cilium` as a CNI in your cluster, please edit the `flavor` field to `cilium`. With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client...