There is disclosed a system and method for enabling transmission of data between an application pair, a first one of the applications in a nomadic/mobile subsystem and a second one of the applications in a ground subsystem comprising a first router within the nomadic/mobile subsystem, the first router interconnected with the first application, a second router within the ground subsystem, the second router interconnected with the second application, and a secure data transfer tunnel established between the first router and the second router, the tunnel comprising a plurality of communication pipes, each one of the plurality of pipes having associated therewith one of a plurality of different communication networks and at least one filtering rule dictating circumstances under which the pipe can be used to transmit data. When at least one attribute of the data to be transmitted matches the at least one filtering rule of a matching one of the plurality of pipes, the transmission of the data between the application pair is assigned to the matching pipe. In a particular embodiment each of said different communication networks comprises a network driver, and each of said plurality of pipes further comprises a roaming profile consisting of a set of rules defining how the pipe can transmit and receive data packets from at least one of said network drivers.