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Access control system topologies Access control system using serial controllers. 1. Serial controllers. Controllers are connected to a host PC via a serial RS-485 communication line (or via 20mA current loop in some older systems). External RS-232/485 converters or internal RS-485 cards have to be installed, as standard PCs do not have RS-485 ...
Definition. According to the model, the protection state of a computer system can be abstracted as a set of objects , that is the set of entities that needs to be protected (e.g. processes, files, memory pages) and a set of subjects , that consists of all active entities (e.g. users, processes).
Logical access controls enforce access control measures for systems, programs, processes, and information. The controls can be embedded within operating systems, applications, add-on security packages, or database and telecommunication management systems.
A mantrap, security mantrap portal, airlock, sally port or access control vestibule is a physical security access control system comprising a small space with two sets of interlocking doors, such that the first set of doors must close before the second set opens.
A database management system, in its access control mechanism, can also apply mandatory access control; in this case, the objects are tables, views, procedures, etc. With mandatory access control, this security policy is centrally controlled by a security policy administrator; users do not have the ability to override the policy and, for ...
Some key aspects of these systems include: Access credentials - Access cards, fobs, or badges are used to identify and authenticate authorized users. Information encoded on the credentials is read by card readers at entry points. Access control panels - These control the system, make access decisions, and are usually located in a secure area.
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