Discovery of Azure Cloud Resources -VM

Hi All ,

I have this question, like when performing discovery of azure cloud resources we create servicenow cloud discovery schedules. While creating those schedules there is one option to create schedules for VM as well .

So wanted to confirm ,discovering those resources via the VM schedule ,do they also need any credentials or port related access to discovery those devices .My schedule is running perfectly  and discovering all the related devices of the service account / subscriptions.