access control
1. (I) Protection of system resources against unauthorized access.
2. (I) A process by which use of system resources is regulated according to a security policy and is permitted only by authorized entities (users, programs, processes, or other systems) according to that policy. (See: access, access control service, computer security, discretionary access control, mandatory access control, role-based access control.)
3. (I) /formal model/ Limitations on interactions between subjects and objects in an information system.