Authentication, Authorization, Accounting

Question 1

What is Authentication?

Answer 1

Proving you are who you say you are

Question 2

What is Authorization?

Answer 2

What do you have permission to do?

Question 3

What is Accounting?

Answer 3

Keeping records of any change made to a system, as well as tracking who made those changes and when

Question 4

RADIUS

Answer 4

Remote Authentication Dial-In User Service

Industry Standard for managing AAA requirements

User will connect to a Remote Access Server (outside the network), this Remote Access Server will then communicate with a RADIUS server (within the network) and verify that the supplied credentials are correct

In modern topologies, Wireless AP’s can act as external Remote Access Servers

Question 5

TACAS

Answer 5

Terminal Access Controller Access - Control System

CISCO Proprietary Protocol for managing AAA requirements

Question 6

Access Client (in the context of RADIUS)

Answer 6

The user who is asking for a connection to the network, communicates with the RADIUS Client

Question 7

RADIUS Client

Answer 7

The device which communicates with the internal RADIUS server on behalf of the Access Client