# Cis K8S V1120 1.2.14

> Ensure that the admission control plugin NodeRestriction is set (Automated)

- Skill: `cyberstrikeus/cis-k8s-v1120-1-2-14` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-k8s-v1120-1-2-14`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-k8s-v1120-1-2-14/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-k8s-v1120-1-2-14

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# 1.2.14 Ensure that the admission control plugin NodeRestriction is set (Automated)

## Profile Applicability

- Level 2 - Master Node

## Description

Limit the `Node` and `Pod` objects that a kubelet could modify.

## Rationale

Using the `NodeRestriction` plug-in ensures that the kubelet is restricted to the `Node` and `Pod` objects that it could modify as defined. Such kubelets will only be allowed to modify their own `Node` API object, and only modify `Pod` API objects that are bound to their node.

## Impact

None

## Audit

Run the following command on the Control Plane node:

```bash
ps -ef | grep kube-apiserver
```

Verify that the `--enable-admission-plugins` argument is set to a value that includes `NodeRestriction`.

## Remediation

Follow the Kubernetes documentation and configure `NodeRestriction` plug-in on kubelets. Then, edit the API server pod specification file `/etc/kubernetes/manifests/kube-apiserver.yaml` on the master node and set the `--enable-admission-plugins` parameter to a value that includes `NodeRestriction`.

```
--enable-admission-plugins=...,NodeRestriction,...
```

## Default Value

By default, `NodeRestriction` is not set.

## References

1. [https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/)
2. [https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#noderestriction](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#noderestriction)
3. [https://kubernetes.io/docs/reference/access-authn-authz/node/](https://kubernetes.io/docs/reference/access-authn-authz/node/)

## CIS Controls

| Controls Version | Control                                              | IG 1 | IG 2 | IG 3 |
| ---------------- | ---------------------------------------------------- | ---- | ---- | ---- |
| v8               | 13.10 Perform Application Layer Filtering            |      |      | \*   |
| v7               | 12.9 Deploy Application Layer Filtering Proxy Server |      |      | \*   |