Internet Gateway Design for Defense Data Network Access

The research work performed on Internet Gateways in the Computer Engineering Research Laboratory at the University of Arizona is described in this paper. The research is sponsored by the U.S. Army Information Systems Command. The design of two Gateways for access to the Defense Data Network is presented. The IP Gateway has been demonstrated and links two Sytek LocalNet 20 Broadband networks via the DDN. The TCP/IP Gateway is currently being built so that it can be used to access the DDN from generic networks. The functions of these Gateways are presented and their implementations are discussed.