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Authentication, authorization, and accounting (AAA) is a framework used to control and track access within a computer network.. Authentication is concerned with proving identity, authorization with granting permissions, accounting with maintaining a continuous and robust audit trail via logging.
The authentication process in this protocol is always initiated by the server/host and can be performed anytime during the session, even repeatedly. The server sends a random string (usually 128B long). The client uses the password and the string received as input to a hash function and then sends the result together with username in plain text.
Attribute-based access control (ABAC), also known as policy-based access control for IAM, defines an access control paradigm whereby a subject's authorization to perform a set of operations is determined by evaluating attributes associated with the subject, object, requested operations, and, in some cases, environment attributes.
PAM allows programs that rely on authentication to be written independently of the underlying authentication scheme. It was first proposed by Sun Microsystems in an Open Software Foundation Request for Comments (RFC) 86.0 dated October 1995. [1] It was adopted as the authentication framework of the Common Desktop Environment.
Process map is a global-system process model that is used to outline the processes that make up the business system and how they interact with each other. Process map shows the processes as objects , which means it is a static and non-algorithmic view of the processes.
Diameter is an authentication, authorization, and accounting (AAA) protocol for computer networks. It evolved from the earlier RADIUS protocol. It belongs to the application layer protocols in the Internet protocol suite.
XACML is a policy-based, attribute-based access control authorization framework. It provides: An access control architecture. A policy language with which to express a wide range of access control policies including policies that can use consents handled / defined via OAuth. A request / response scheme to send and receive authorization requests.
In computer security, general access control includes identification, authorization, authentication, access approval, and audit.A more narrow definition of access control would cover only access approval, whereby the system makes a decision to grant or reject an access request from an already authenticated subject, based on what the subject is authorized to access.