VMware Converter Enterprise requires the following TCP ports to be open:

A.
139, 902, 905

B.
139, 443, 902

C.
139, 443, 445

D.
443, 902, 905

Explanation:
Required Ports
Converter Enterprise for VirtualCenter (plugin)

* Converter Enterprise Server to remote physical machine – TCP 445, 139 and UDP 137,
* Converter Enterprise Server to VirtualCenter Server – 443
* Converter Enterprise Client to Converter Enterprise Server – 443
* Physical machine to VirtualCenter Server – 443
* Physical machine to ESX Server – 443, 902