In security, specifically physical security, the term access control refers to the practice of restricting entrance to a property, a building, or a room to authorized persons. Physical access control can be achieved by a human (a guard, bouncer, or receptionist); through mechanical means such as locks and keys; or through technological means such as a card access system.
Computer security access control includes authentication, authorization and audit. It also includes additional measures such as physical devices, including biometric scans and metal locks, hidden paths, digital signatures, encryption, social barriers, and monitoring by humans and automated systems. Authorization may be implemented using role based access control, access control lists or a policy language such as XACML.
Access control is the ability to permit or deny the use of an object (a passive entity, such as a system or file) by a subject (an active entity, such as an individual or process).
Computer security access control includes authentication, authorization and audit. It also includes additional measures such as physical devices, including biometric scans and metal locks, hidden paths, digital signatures, encryption, social barriers, and monitoring by humans and automated systems. Authorization may be implemented using role based access control, access control lists or a policy language such as XACML.
Access control is the ability to permit or deny the use of an object (a passive entity, such as a system or file) by a subject (an active entity, such as an individual or process).
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Last Updated: Sep 2009
Last Updated: Sep 2009
What is Access Control?
Access control systems provide the essential services of identification and authentication (I&A), authorization, and accountability where identification and authentication determine who can log on to a system, authorization determines what an authenticated user can do, and accountability identifies what a user did.
In public policy, access control to restrict access to systems ("authorization") or to track or monitor behavior within systems ("accountability") is an implementation feature of using trusted systems for security or social control.
In public policy, access control to restrict access to systems ("authorization") or to track or monitor behavior within systems ("accountability") is an implementation feature of using trusted systems for security or social control.
