I'm trying to implement SSL offload in Azure Application Gateway as described in documentation: https://docs.microsoft.com/en-us/azure/application-gateway/application-gateway-ssl-portal
It requires to upload existing SSL certificate in PFX format.
How can I generate it?
I assume it should be specific for the DNS name of the Application Gateway. I can see it has automatically generated DNS name in the associated appGatewayFrontendIP (Frontend IP configurations > Public > Public IP address), but I can't specify the DNS name I want.
Am I supposed to create a CNAME in my DNS domain for the Application Gateway and generate a certificate for this CNAME?