Abstract
This chapter focuses on the selection of appropriate security elements. The kinds, variety, and severity of security vulnerabilities found in networked microcomputers are markedly different from those encountered in data centers or time-sharing applications where a number of terminal devices are connected to a central mainframe. In contrast to the traditional physical and logical controls implemented at one place, which are typical of a data center security scheme, a network of computers, workstations, and other devices requires the following information security measures: (1) control of access to all information files accessible from the home network or from connected foreign networks; (2) control of activity once authorized entry to a file has been allowed; (3) control of access to network traffic; (4) establishment of effective identification and authentication means for each network user and for each network component; (5) control of access to network resources such as clearinghouses, communications controllers, front ends, and various servers; and (6) control of information propagation to prevent distribution or leaking to unauthorized network stations or users.
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