Authentication, Authorization and Accounting – A functional description of a type of security architecture for a network. When people refer to a AAA System or a “Triple A” system, they are referring to a kind of system that has control over:
- Authentication – Is the user who we think they are and are they allowed into our system
- Authorization – Which users have access to which services which and how many resources can be allocated to each user
- Accounting – tracking the actual usage by the user
“Triple A” systems are generally considered to be secure.