# Cis Oke V180 3.2.5

> Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)

- Skill: `cyberstrikeus/cis-oke-v180-3-2-5` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-oke-v180-3-2-5`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-oke-v180-3-2-5/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-oke-v180-3-2-5

---


# CIS OKE Benchmark v1.8.0 - Control 3.2.5

## Profile Applicability

- **Level:** 1

## Description

Do not disable timeouts on streaming connections.

## Rationale

Setting idle timeouts ensures that you are protected against Denial-of-Service attacks, inactive connections and running out of ephemeral ports.

**Note:** By default, `--streaming-connection-idle-timeout` is set to 4 hours which might be too high for your environment. Setting this as appropriate would additionally ensure that such streaming connections are timed out after serving legitimate use cases.

## Impact

Long-lived connections could be interrupted.

## Audit Procedure

### Audit Method 1

If using a Kubelet configuration file, check that there is an entry for `--streaming-connection-idle-timeout` is not set to `0`.

First, SSH to the relevant node.

Run the following command on each node to find the appropriate Kubelet config file:

```bash
find / -name kubelet.service
```

The output of the above command should return the file and location `/etc/systemd/system/kublet.service` which is the location of the Kubelet service config file.

Open the Kubelet service config file:

```bash
sudo more etc/systemd/system/kubelet.service
```

Verify that the `--streaming-connection-idle-timeout` argument is not set to `0`.

### Audit Method 2

If using the api configz endpoint consider searching for the status of `"streamingConnectionIdleTimeout":"4h0m0s"` by extracting the live configuration from the nodes running kubelet.

Set the local proxy port and the following variables and provide proxy port number and node name:

```bash
kubectl proxy --port=8001 &

export HOSTNAME_PORT=localhost:8001 (example host and port number)
export NODE_NAME=10.0.10.4 (example node name from "kubectl get nodes")

curl -sSL "http://${HOSTNAME_PORT}/api/v1/nodes/${NODE_NAME}/proxy/configz"
```

## Remediation

### Remediation Method 1

If modifying the Kubelet service config file, edit the kubelet.service file `/etc/systemd/system/kubelet.service` and set the below parameter:

```
--streaming-connection-idle-timeout
```

### Remediation Method 2

If using the api configz endpoint consider searching for the status of `"streamingConnectionIdleTimeout":` by extracting the live configuration from the nodes running kubelet.

See detailed step-by-step configmap procedures in [Reconfigure a Node's Kubelet in a Live Cluster](https://kubernetes.io/docs/tasks/administer-cluster/reconfigure-kubelet/), and then rerun the curl statement from audit process to check for kubelet configuration changes.

```bash
kubectl proxy --port=8001 &

export HOSTNAME_PORT=localhost:8001 (example host and port number)
export NODE_NAME=10.0.10.4 (example node name from "kubectl get nodes")

curl -sSL "http://${HOSTNAME_PORT}/api/v1/nodes/${NODE_NAME}/proxy/configz"
```

**For all remediations:** Based on your system, restart the `kubelet` service and check status:

```bash
systemctl daemon-reload
systemctl restart kubelet.service
systemctl status kubelet -l
```

## Default Value

See the OKE documentation for the default value.

## References

1. https://kubernetes.io/docs/admin/kubelet/
2. https://github.com/kubernetes/kubernetes/pull/18552
3. https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Concepts/contengoverview.htm

## CIS Controls

| Controls Version | Control                                                                                   | IG 1 | IG 2 | IG 3 |
| ---------------- | ----------------------------------------------------------------------------------------- | ---- | ---- | ---- |
| v8               | 10.5 Enable Anti-Exploitation Features                                                    |      | \*   | \*   |
| v7               | 8.3 Enable Operating System Anti-Exploitation Features / Deploy Anti-Exploit Technologies |      | \*   | \*   |

## MITRE ATT&CK Mappings

| Techniques / Sub-techniques | Tactics | Mitigations |
| --------------------------- | ------- | ----------- |
| T1490                       | TA0040  | M1028       |

## Profile

**Level 1** (Automated)