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content/en/docs/concepts/services-networking/network-policies.md

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 title: Network Policies
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 A network policy is a specification of how groups of {{< glossary_tooltip text="pods" term_id="pod">}} are allowed to communicate with each other and other network endpoints.
 
 NetworkPolicy resources use {{< glossary_tooltip text="labels" term_id="label">}} to select pods and define rules which specify what traffic is allowed to the selected pods.
 
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 ## Prerequisites
 
 Network policies are implemented by the [network plugin](/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/). To use network policies, you must be using a networking solution which supports NetworkPolicy. Creating a NetworkPolicy resource without a controller that implements it will have no effect.
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 - See the [Declare Network Policy](/docs/tasks/administer-cluster/declare-network-policy/)
   walkthrough for further examples.
 - See more [recipes](https://github.com/ahmetb/kubernetes-network-policy-recipes) for common scenarios enabled by the NetworkPolicy resource.
 
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