A centralized approach to computer network security
Frank R. Heinrich, David A. S. Kaufman · 1976
This paper presents an approach to network security at the system design level. Some basic network concepts and major network security threats are outlined. The design approach is described and a brief security analysis is presented. The proposed network structure incorporates data protection devices called network cryptographic devices and a special-purpose processor, the network security center, to control access in the network.