Network security: the parts of the sum

Attention is given to the three basic elements of network security, i.e. encryption, network protocols, and trusted computer system protocols. It is noted that each of these measures is needed to achieve overall network security and yet frequently the advocates of individual measures ignore the others for a variety of technical and/or doctrinal reasons. The author attempts to convey the importance of applying these measures in proper perspective to achieve true network security. Examples of problems in network security are discussed, including personal-computer encryption services, secure data network issues, and COMSEC procurements