Access control mechanisms for a network operating system*

摘要

The growing recognition of the need for computer system security has resulted in the design, development and installation of 'patches,' packages and even new operating systems intended to provide higher degrees of data and systems protection. With the increased utilization of computer networks and current developments in the area of network operating systems (NOSs) 40 , 19 , 30 the requirements for security in networking environments are also coming under investigation. 26 , 42 While research and development are still ongoing in the NOS area, it is vital to ensure that requirements for the security and integrity of data are well specified and that mechanisms for achieving the needed levels of systems protection are included in the design of the NOS. This will ensure that subsequent production versions of NOSs incorporate such mechanisms-thus, charting a course away from the otherwise inevitable 'retrofit security' situation.