Authentication, Authorization and Accounting (AAA) Protocols Agententechnologien in der Telekommunikation Sommersemester 2009 Babak Shafieian
[email protected] A O T Agententechnologien in betrieblichen Anwendungen 10.06.2009 und der Telekommunikation Overview A O T Agententechnologien in der Telekommunikation - 2 TU Berlin Motivation (Why AAA?) Ö Telecommunications services are a global market worth over US$ 1.5 trillion in revenue. Home Entertainment Voice over IP (VoIP) Multimedia Conference Messaging/ Presence A O T Agententechnologien in der Telekommunikation - 3 TU Berlin Authentication (Who is
[email protected]) Ö Authentication is the process of verifying user’s identity using credentials like username, password or certificates. Ö After the successful match of user’s authentication credentials with the credentials stored in the database of the service provider, the user is granted access to the network, otherwise the access is denied. A O T Agententechnologien in der Telekommunikation - 4 TU Berlin Authorization Ö Is the process of enforcing policies. It determines what types or qualities of network resources or specific services the user is permitted. Ö By using the access policy defined for a specific user, the service provider grants or rejects the access requests from the user. Ö Access policy could be applied on a per user or group basis. A O T Agententechnologien in der Telekommunikation - 5 TU Berlin Accounting Ö Is the process of keeping track of what the user is doing. Ö It includes: Amount of the time spent in the network (duration of session) Number of packets(or bytes) transmitted during a session. The accessed services during a session.