> 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/8.12/configure-cortex-xsoar/engines/configure-engines/configure-the-engine-to-call-the-server-without-using-a-proxy/configure-an-engine-to-use-custom-certificates.md).

# Configure an engine to use custom certificates

You can replace the default self-signed certificate for the engine with your own certificate.

1. Find the two files created by the engine. The default location is **`/usr/local/demisto`**.

   **`d1.key.pem`**

   **`d1.cert.pem`**
2. Replace the contents of these files with your own certificates.
3. Change file owner to demisto:

   **`chown -R demisto:demisto d1.key.pem`**

   **`chown -R demisto:demisto d1.cert.pem`**
4. Set the file permissions:

   **`chmod 600 d1.key.pem`**

   **`chmod 644 d1.cert.pem`**


---

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