AAA Access Control
AAA stands for authentication, authorization, accounting. This chapter will cover
the authentication and authorization aspects of AAA, leaving the accounting details
for Chapter 11. AAA access control provides much greater scalability and functionality
than the basic access control methods discussed in Chapter 3. AAA can use local
router configuration, TACACS+, RADIUS, and Kerberos for authentication and can
utilize a TACACS+ or RADIUS for authorization.