This chapter describes authentication, authorization, and accounting (AAA), with an emphasis on accounting. It starts with a general introduction to AAA, RADIUS, and Diameter, and then the various standards are discussed, along with voice-specific extensions. You will learn how to identify which AAA functions to use for which requirements and what Cisco has implemented.
With authentication, authorization, and accounting, each “A” describes a specific set of tasks to perform:
Authentication verifies that the users are who they say they are.
Authorization limits the user’s activities to a set of policies, such as hours of operation, idle timeouts, filters, limiting service and connection access, and so on.
Accounting generates ...