HTTPS protocol required the certificate to authorized the Hostname/IP. Normally, we suggest you apply for the certificate from qualified certification authorities. In order to make sure the HTTPS safer and avoid the unsafe link prompt when you first log in to the PBX.
Here I am going to introduce how to use Wildcard certificates from Comodo for Yeastar S-Series VoIP PBX.
Step 1: Apply Wildcard SSL Certificate through the link click here
And you can check this link to know more about the Wildcard SSL Certificate. click here
Step 2: Then you will get 4 certificates file as below. For example, it contains 3 Trusted Certificates:
And 1 Server Certificate:
Below is the relationship among the 4 certificates.
Step 3: Upload all of the Trusted Certificates in Yeastar S-Series VoIP PBX. The menu path Settings> System> Security> Certificate.
Step 4: Create a Server Certificate with format 'xx.pem'.
1. Open the Server Certificate file - 'xx.crt' file with editor (such as Notepad ++), then input the Key in it. The key is stored in other file authority provided that is not from the above certificate files.
Then save the Server certificate file with format 'xx.pem'.
Note: Please put the Key above 'BEGIN CERTIFICATE'.
2. Then upload the Server certificate file to Yeastar S-Series VoIP PBX. The menu path is: Settings> System> Security> Certificate.
Step 5: Select the Server Certificate. The menu path is: Settings> System> Security> Service-> Certificate. Click to "Save" and later reboot your system to let it take effect.