You’re creating a list of ports you need the network admin to open on the firewall. What is port 902 used for on vCenter?

Port 902 is the default port vCenter uses to send data to hosts managed by vCenter.

Its TCP/UDP port.

This is the default port used by the vCenter Server system to send data to managed hosts. Managed hosts also send a regular heartbeat over UDP port 902 to the vCenter Server system. This port must not be blocked by firewalls between the server and the hosts or between hosts.

This uses TCP/UDP protocol to manage the hosts.

It is the default port for Vcenter

Required for data transport during cloning of system to be converted to target ESXi/ESX Host