VMware Horizon components use several different protocols to exchange messages.
The following table lists the default ports that each protocol uses. You can change the port numbers. For example, you might need to change the port numbers to comply with organization policies, or to avoid contention.
|JMS||TCP port 4001
TCP port 4002
|HTTP||TCP port 80|
|HTTPS||TCP port 443|
|MMR/CDR||TCP port 9427
The following features use this port.
|RDP||TCP port 3389
Note: If the Connection Server instance is configured for direct client connections, these protocols connect directly from the client to the remote desktop and are not tunneled through the Horizon Secure Gateway Server component.
|SOAP||TCP port 80 or 443|
TCP port 4172
UDP ports 4172, 50002, 55000
|USB redirection||TCP port 32111. This port is also used for time zone synchronization.|
|VMware Blast Extreme||
TCP ports 8443, 22443
UDP ports 443, 8443, 22443
|HTML Access||TCP ports 8443, 22443|
TCP Ports for Connection Server Intercommunication
Connection Server instances in a group use additional TCP ports to communicate with each other. For example, Connection Server instances use port 4100 or 4101 to transmit JMS inter-router (JMSIR) traffic to each other. Firewalls are typically not used between the Connection Server instances in a group.