Hi JohsH,
In the case of the ctrlX CORE Web UI, you can follow these instructions (see PDF attached) to generate a certificate and key. You will need to install both in the CORE and the certificate in the browser you plan to view the web server with. (Thanks to @bostroemc)
For WebIQ, a different process is required. Here are the instructions from WebIQ on the topic. You may not be able to access them without a SmartHMI account.
WebIQ TLS Instructions
Here is another forum post about WebIQ TLS and the CORE.
WebIQ TLS ctrlX CORE
Here is an article on accessing data from a seperate web server in a WebIQ application.
WebIQ with Reverse Proxy
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