> 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/xsoar-6-administrator-guide/6.15/onboard-cortex-xsoar/high-availability/use-a-signed-certificate.md).

# Use a Signed Certificate

Use a signed certificate in a Cortex XSOAR 6.15 high availability deployment.

By default, Cortex XSOAR servers use a self-signed certificate for a secure HTTP connection. If you are using your own server certificate, you need to make that certificate available to all of your application servers or main hosts.

1. Place the certificate in the shared file server, under **`/var/lib/demisto`**.
2. For each app server or main host, stop the server.

   `sudo service demisto stop`
3. For each app server or main host, add the following to the `/etc/demisto.conf` file:
   * Security.CertFile: `"<path to .pem file>"`
   * Security.KeyFile: `"<path to .key file>"`


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