ESXi hosts and other network components are accessed using predetermined TCP and UDP ports. If you manage network components from outside a firewall, you might be required to reconfigure the firewall to allow access on the appropriate ports.
The table lists TCP and UDP ports, and the purpose and the type of each. Ports that are open by default at installation time are indicated by (Default).
|443 (Default)|| HTTPS access
vSphere Client access to vCenter Server
vSphere Client access to ESXi hosts
vSphere Client access to vSphere Update Manager
|Incoming TCP to the ESXi host|
vSphere Client access to virtual machine consoles
|Incoming TCP to the ESXi host, outgoing TCP from the ESXi host, outgoing UDP from the ESXi host|