# Configuring an OPC UA Server

An OPC UA Server can be configured to publish global variables via the OPC UA protocol. The OPC UA Server is configured with the OPC UA Server application.

- Starting the OPC UA Server
- Stopping the OPC UA Server
- Setting the port of the OPC UA Server
- Allowing anonymous access to the OPC UA Server
- Adding a user of the OPC UA Server
- Deleting a user of the OPC UA Server
- Adding an OPC UA Client certificate
- Accepting an OPC UA Client certificate
- Rejecting an OPC UA Client certificate
- Deleting an OPC UA Client certificate
- Publishing a global variable for OPC UA Clients
- Unpublishing a global variable from OPC UA Clients