Port used by vSphere 4

1. Vmotion : 8000
2. HA traffic : 2050–2250 and 8042–8045
3. Traffic between ESX hosts for VMware Fault Tolerance : 8100, 8200
4. Transactions to iSCSI storage devices : 3260
5. Transactions from NFS storage devices : 2049
6. vSphere Client uses ports 80 to communicate with vCenter Server and Port 443 to communicate with ESX server
7. Port 902 : vCenter Server uses this port to send data to vCenter Server managed hosts. 

Port 902 is the port that vCenter Server assumes is available when sending data to an    ESX host. VMware does not support configuring a different port for this connection.

1. Port 443 : The vSphere Client, vSphere Web Access Client, and SDK use this port to send data to     vCenter Server managed hosts. Also, the vSphere Client, vSphere Web Access Client, and SDK, when connected directly to an ESX host, use this port to support any management functions related to the server and its virtual machines. Port 443 is the port that clients assume is available when sending data to the ESX host. VMware does not support configuring a different port for these connections.
2. Port 903: The vSphere Client and vSphere Web Access use this port to provide a

connection for guest operating system MKS activities on virtual machines. It isthrough this port that users interact with the guest operating systems andapplications of the virtual machine.

VMware does not support configuring a different port for this function.