Abstract: A server system in communication with a plurality of machines that form a linear communication orbit establishes a direct duplex connection between the server system and a first endpoint machine. The server system enrolls the first endpoint machine as a satellite endpoint machine, which enables the satellite endpoint machine to execute one or more function modules. Typically, the server system authenticates, via the direct duplex connection, the first endpoint machine, and, after authenticating the first endpoint machine, sends, to the first endpoint machine, an instruction for executing a function module. The server system receives a report including information obtained by the first endpoint machine executing the function module. At least one of the establishing a direct duplex connection, sending the instruction, and receiving the report includes sending or receiving a communication between the first endpoint machine and the server system via the linear communication orbit.