how to lock down the access to a speech resource so that only Speech portal (speech.microsoft.com) would get access to it?
Currently the resource requires "access from all networks". This is against our policy. How can we lock this down? I did not find a suitable IP adress range which worked. What is best practice?
A private endpoint probably cannot be used, but what else?
We need the resource only for Content creation (text to speech with SSML)