Observing interception records of apim instances in the firewall, the protocol and port are not within the scope of apim resource requirements, and it is necessary to confirm the role of these requests.

When using an internal virtual network, APIM does not process requests from customers.

The firewall is always intercepted and recorded, with the client being an API instance and the target being the storage's public IP

Please explain the role of the relevant protocol ports and whether it is necessary to add clearance. I did not see any description of the relevant port in the API documentation

https://video2.skills-academy.com/en-us/azure/api-management/virtual-network-reference?tabs=stv2#required-ports