We have two projects -
Project 1 - Google App engine standard python 2.7. Project 2 - Google Appp engine standard python 3.3
Project 1 application is secured using Firebase user authentication. We have a need to access a particular function (URL) of Project 1 accessing from Project 2. The call from Project 2 will be done by the server (not user). We need this to be secure.
Can we enable just this function (URL) in Project 1 with IAP? And use the instructions here to authenticate?
It the above is not a solution, what are our options?