80 vCenter Server requires port 80 for a direct HTTP connection. Port 80 redirects the request to HTTPS port 443. This port is useful if you accidentally use http://server instead of https://server.

389 This port must be opened on the local and all remote instances of vCenter Server. This is the LDAP port number of the directory service of the vCenter Server group. The vCenter Server system needs to bind port 389, even if the vCenter Server instance is not added to the linked mode group. If another service is running on this port, it is best to delete it or change its port to another port. You can run LDAP service on any port from 1025 to 65535. If this instance acts as Microsoft Windows Active Directory, change the port number from 389 to any available port between 1025 and 65535.

443 Default port used by the vCenter Server system to listen for connections from the vSphere Client. To enable vCenter Server to receive data from the vSphere Client, open port 443 in the firewall. The vCenter Server system also uses port 443 to listen to data transmitted from the vSphere Web Access client and other SDK clients. If you use another port number for HTTPS, you must use the.

636 For vCenter link mode, this is the SSL port of the local instance. If another service is running on this port, it is best to delete it or change its port to another port. You can run SSL service on any port from 1025 to 65535.

The default port used by the 902 vCenter Server system to send data to managed hosts. The managed host will also periodically send detection signals to the vCenter Server system through UDP port 902. The firewall between the server and the host or between hosts must not block this port.

902/903 Ports 902 and 903 must not be blocked between the vSphere Client and the host. The vSphere Client uses these ports to display the virtual machine console.

8080 Web service HTTP. Used for VMware virtualcenter management web service.

8443 network service HTTPS. Used for VMware virtualcenter management web service.

60099 Web service change service notification port