When designing and determining the architecture for a successful VDI deployment, it is important to understand the underlying network traffic flows, ports, and components. Use Figure 1 as a starting reference for understanding the interdependencies of the different components within a VMware Horizon 7 architecture. The number of ports and protocols that are required will vary depending on the size of the deployment, the external connectivity requirements, and the display protocols in use (RDP, Blast, or PCoIP). You should undertake careful planning and design to allow these ports and protocols in the corporate network firewall policies.
For more information about required ports and protocols, see VMware View ports and network connectivity requirements (1027217) and the VMware Horizon Reference Architecture guide.