Abstract:
An access control mechanism is a set of operations performing auth<>-
rization and enforcement checks, creation and movement of rights within
the system from assigned control functions established by predefined
control information. Enforcing accec,Scontrol policies, which
are the basis of control information, requires knowing who can access,
is a total reflection of management policies of a computing system.
MeasureS of access validation, to S,OTIeextent, is optional and in actuality,
is dominated and modulated by the management policies of the
authority of a computing system. An online software control mechanism
for the management of computer systems has been developed in order to
validate a user's access into the system on extensive measureS of constraints.
System management operations for process control of different job requeSts
are attributed and realized, to some extents, in the form of controlling
priority attribute through modifications, and servicing the timer
interrupt requests with job termination "ftcr a definite interval of
processing time.
To make the enforcement of acceSS control and proceSS control policies,
a secondary storage base for control information is maintained with
many oth"r as,;ociat()d or supporting information like job stati5tics
or job accounting information to ensure proper decisive actions.
The complete software system has been developed in IBM/370 and a specific
version of this has been installed irithe same operated under DOS/VS and
also in IBM/4331 operated under OOS/VSE in BUET Computer Centre.
