> For the complete documentation index, see [llms.txt](https://docs.monokot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monokot.io/tags-and-devices/opc-ua-connectivity/how-to-pulling-security-certificate.md).

# How to: Pulling Security Certificate

To pull the security certificate of an external OPC UA server and place it to the certificate list using Monokot Server Administrator, open the Device Manager, select the OPC UA Client device used for communication with the external OPC UA server and click *Pull The Certificate*.

![](/files/HoqK2ExlLQfOg178qg0H)

In the following dialog box, click *Yes*, and the certificate will appear in the certificate list on the *Server Certificates* tab. To make the added certificate trusted, select it from the certificate list and click the Trust button.

For the changes to take effect, they need to be synchronized with the server by pressing the *Sync* button or the F5 key.


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