US Patent 8155036 Portable multi-level security communications system

A portable multi-level security communications system (system) provides a communications backbone for Internet Protocol (IP) based data at multiple levels of security and allows on-board users to communicate, with each other and an outside network, while maintaining separation from the on-board communication system. The system can connect to an outside network using a fast, reliable connection without impeding or conflicting with current on-board operating systems. The system is able to run multiple security enclaves while maintaining separation between the enclaves and their users.