TCP and UDP Ports for the vSphere Client

TCP and UDP Ports

Port

Purpose

Traffic Type

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

902 (Default)

vSphere Client access to virtual machine consoles

Incoming and outgoing TCP, outgoing UDP

903

Remote console traffic generated by user access to virtual machines on a specific host.

vSphere Client access to virtual machine consoles

MKS transactions (xinetd/vmware-authd-mks)

Incoming TCP