The EnSight application suite consists of a number of different applications (Client, Server, Collabhub, Server of Servers, etc) that communicate over TCP/IP (socket) connections. The collection of connections are fairly complex and in secure environments, the specifics of those connections are critical for advanced client/server usage of EnSight with remote components. In this section, we document the various connections that can be made by the suite so that specific firewall and VPN/tunnel configurations can be customized for use with EnSight.