> 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-xsoar-8-on-prem/8.6/configure-cortex-xsoar/engines/engine-requirements.md). # Engine requirements You can install engines on all Linux machines. Docker/Podman needs to be installed before installing an engine. If you are using the shell installer for an engine, Docker/Podman is installed automatically. {% hint style="info" %} ### Note The Cron package is required for installing engines on a Linux machine. {% endhint %} #### Engine hardware requirements If your hard drive is partitioned, we recommend a minimum of 50 GB for the `/var` partition. | Component | Dev Environment Minimum | Production Minimum | | --------- | ----------------------- | ------------------ | | CPU | 8 CPU cores | 16 CPU cores | | Memory | 16 GB RAM | 32 GB RAM | | Storage | 100 GB | 100 GB | {% hint style="info" %} ### Note If using Podman, we recommend reserving 150 GB for container storage, either in the `/home` partition or a different storage directory that you have set using the `rootless_storage_path` key. For more information, see [Change container storage directory](https://app.gitbook.com/s/vksWgzvBZ9ZvAg4dGLrH/engines/install-an-engine/podman/change-container-storage-directory). {% endhint %} #### Operating system requirements You can deploy a Cortex XSOAR engine on the following operating systems: | Operating System | Supported Versions | | ---------------- | -------------------------------------------------------------------- | | Ubuntu | 18.04, 20.04, 22.04 | | RHEL | 8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, 9.0, 9.1, 9.2, 9.3 | | Oracle Linux | 7.x | | Amazon Linux | 2 | {% hint style="info" %} ### Note Centos 8.x reached End of Life (EOL) on December 31, 2021, and is no longer a supported operating system. Centos 7.x reached End of Life (EOL) on June 30, 2024, and is no longer a supported operating system. {% endhint %} #### Engine required URLs {% hint style="info" %} ### Important Ensure the DNS record that maps to API access is added to your DNS server. The Cortex XSOAR engine uses it to establish a secure WebSocket (WSS) connection to the XSOAR API server for authentication, communication, and task execution. For more information, see [URL requirements](/cortex-xsoar-8-on-prem/8.6/onboard-cortex-xsoar/cortex-xsoar-installation/system-requirements/url-requirements.md). {% endhint %} You need to allow the following URLs for Cortex XSOAR engines to operate properly. The URLs are needed to pull container images from public Docker registries. The endpoint URL is: `wss://api-/xsoar/d1ws` | FUNCTION | SERVICE | PORT | DIRECTION | | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------- | --------- | | Integrations | | Integration-specific ports | Outbound | | Engine connectivity | HTTPS | 443 (configurable) | Outbound | | Docker/Podman |

Note

Docker URLs may change. For the current list, see . Note that some URLs in the allow list are for Docker Desktop and are not required for Cortex XSOAR.

| 443 | Outbound | | Google Cloud Registry | gcr.io | 443 | Outbound | --- # 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-xsoar-8-on-prem/8.6/configure-cortex-xsoar/engines/engine-requirements.md?ask=&goal= ``` `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.