Authentication, Authorization, and Accounting (AAA) Features

ABC

The term AAA refers to Authentication, Authorization, and Accounting. These are three critical functions that are commonly used to control access to network resources, monitor network usage, and manage security policies.

Here is a detailed explanation of each of the three A's:

1. Authentication: Authentication is the process of verifying the identity of a user or device before allowing access to a network resource. This can involve a username and password combination, a digital certificate, or other methods of proving identity. By requiring authentication, network administrators can ensure that only authorized users are allowed access to sensitive resources.

2. Authorization: Authorization is the process of determining what actions an authenticated user is allowed to perform. For example, a user might be authorized to access a particular file, but not authorized to modify or delete it. Authorization can be based on a user's role within an organization, or on other factors such as time of day or location.

3. Accounting: Accounting refers to the process of tracking network resource usage by authenticated users. This can include logging information such as the time and duration of network access, the types of resources accessed, and the amount of data transferred. Accounting data can be used for billing, auditing, or security purposes.

Therefore, the correct options are A. authorization, C. authentication, and B. accounting.