What TCP ports does the VMware Agent use?

List of Backup Exec VMware Agent TCP ports for vCenter:
 

Backup Exec Server Process	Backup Exec Server TCP Port	Connection Direction	Server categories	Server TCP Port
beremote.exe	dynamic	→	vCenter Server	443

List of Backup Exec VMware Agent TCP ports for ESXi:

 

Backup Exec Server Process	Backup Exec Server TCP Port	Connection Direction	Server categories	Server TCP Port
beremote.exe	dynamic	→	ESXi Server	443
beremote.exe	dynamic	→	ESXi Server	902

Description:

The TCP ports 443 and 902 are required to access the VMware infrastructure.

Backup Exec connects to TCP port 443 to access the vCenter server or ESXi for information such as the VM discovery requests, snapshot creation, deletion, and so on.
Backup Exec connects to TCP port 902 for NBD/NBDSSL transport.
There is no TCP session from ESXi or vCenter to Backup Exec Server. So there is not listened port in Backup Exec Server for VMware agent.