Certain UDP and TCP ports must be open so that View components can communicate with each other. Knowing which Windows services run on each type of View server helps identify services that do not belong on the server. View TCP and UDP PortsView uses TCP and UDP ports for network access between its components. Services on a View Connection Server HostThe operation of View depends on several services that run on a View Connection Server host. Services on a Security ServerThe operation of View depends on several services that run on a security server.