Components of AAA
Authentication, authorization, and accounting are the functional components, but they also contain certain core components. It's important to understand the core components of AAA and their functions, which are as follows:
- Client: A device that attempts to access the network by authenticating itself or acting as substitute to validate the user.
- Policy Enforcement Point (PEP): It implements the requisites specified by client access. It is also referred to as the authenticator, VPN concentrator, Wireless Access Point (WAP), and so on.
- Policy Information Point (PIP): It stores information and facilitates access decisions. A PIP could be a database containing device IDs, a user directory, or a one-time password, to name a few.
- Policy Decision Point (PDP): It is responsible for collecting access requests from the PEP and also assigning the PIP to collect more information that would help in making an access decision. It is responsible for making the final decision about the network...
