An example system includes a mobile system having a first network zone and a second network zone of a different type than the first network zone; a converged network device (CND) interposed between the first network zone and the second network zone, the CND comprising: a policy manager circuit structured to interpret a policy comprising a network regulation description; a configuration circuit structured to configure a first network interface circuit in response to the network regulation description, and to configure a gatekeeper interface circuit in response to the network regulation description; wherein the first network interface circuit is structured to regulate communications between end points of the first network zone and end points of the second network zone; and wherein the gatekeeper interface circuit is structured to regulate communications between end points of the first network zone with at least one of an external communications portal or an external device.