> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-cloud-posture-management/cases-and-issues/investigation-and-response/automation/engines/install-an-engine/docker/docker-hardening-guide.md).

# Docker hardening guide

The following describes the engine settings we recommend for securely running Docker containers.

When editing the configuration file, you can limit container resources, open file descriptors, limit available CPU, and more. For example, add the following keys to the configuration file:

`{"docker.run.internal.asuser": true,"limit.docker.cpu": true,"limit.docker.memory": true,"python.pass.extra.keys": "--pids-limit=256##--ulimit=nofile=1024:8192"}`

{% hint style="info" %}
We recommend reviewing *Docker network hardening* below before changing any parameters in the configuration file.
{% endhint %}

To securely run Docker containers, we recommend using the latest Docker version.

You can *Check Docker Hardening Configurations* to verify that the Docker container has been hardened according to the settings we recommend.

{% hint style="info" %}
The settings below can also be applied to [Podman](/cortex-cloud-posture-management/cases-and-issues/investigation-and-response/automation/engines/install-an-engine/podman.md), with the exception of limiting available memory, limiting available CPU, and limiting PIDS.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://cortex-docs.paloaltonetworks.com/cortex-cloud-posture-management/cases-and-issues/investigation-and-response/automation/engines/install-an-engine/docker/docker-hardening-guide.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.