Horizon Workspace comes as a vApp containing several virtual appliances which handle different jobs. The first rule for installing Horizon Workspace is: Get your DNS working! After that the configuration is quite easy. All setup for the vApp is done on the Configurator virtual appliance which propagates the settings to the other appliances. This information is sent via the SSH port which means that all appliances must be reachable from the Configurator via port 22. But what about the other services on the appliances? How do they communicate to each other? The following diagram gives you an overview of the open ports needed in your Horizon environment.
Please note that a few ports are configurable. This includes the connection to the database, the Active Directory, theView and SMTP server and last but not least the vCenter.