Multi Cluster Multi Network communication

Hi I’m working on an istio multicluster configuration.
I need to know on which port the communication between two clusters is.
On which ports the “remote” cluster calls the primary? The “primary” calls the “remote” on the 443 only?

were you able to find it?

15443 is the port you need for multi-cluster service communication. You will also need to k8s API ports for service discovery.