Authentication, authorization, and accounting (AAA) represent the major components of network access control and security. Authentication ensures a user's identity by requiring credentials like usernames and passwords. Authorization then determines the resources and services individual users have access to based on their authentication. Accounting tracks user activity for purposes like trend analysis, billing, auditing, and capacity planning. Together these three components (authentication, authorization, accounting) provide the foundation for secure network management and administration through identity verification and access control.

1. AUTHENTICATION, AUTHORIZATION,
ACCOUNTING(AAA)
Rahul kundu
6th sem, IT

2. INTRODUCTION OF AAA
 Sometimes referred to as “ triple-A” or just
AAA,
 A- Authentication
 A- Authorization
 A- Accounting
Represent the big tree in terms of IP based
network management & policy administration.

3.  AUTHENTICATION
 Authentication is a process that ensures &
confirms a user’s identity.
 Authentication begins when a user tries to
access information.
 The user must prove his access rights &
identity.

4.  AUTHENTICATION
 When logging into a computer users
commonly enter usernames & passwords for
authentication purpose.
 This login combination, which must be
assigned to each user, authenticates access.

5.  AUTHORIZATION
 Authorization is the process of granting or
denying a user access to network resources
once the user has been authenticated
through the username & password.
 The amount of information & the amount of
services the user has access to depend on
the user’s authorization level.

6.  ACCOUNTING
 Accounting is the process of keeping track of
a user’s activity while accessing the network
resources, including the amount of time
spent in the network, the services accessed
while there & the amount of data transferred
during the session.
 Accounting data is used for trend analysis,
capacity planning, billing auditing & cost
allocation.

7. THANK YOU