| Summary

| Students should now possess an understanding of how the PIX Security Appliance supports authentication, authorization, and accounting (AAA) services. This understanding should include the ability to configure, monitor, and troubleshoot AAA on the PIX.

For authentication, the discussion included how to set usernames and passwords.

For authorization, the discussion focused on the differences between TACACS+ and RADIUS. TACACS+ performs authorization natively, but it requires downloading of per-user ACLs to accomplish authorization using RADIUS.

Finally, students have been introduced to the concept of Point-to-Point Protocol over Ethernet (PPPoE) and should understand how the PIX Security Appliance interoperates with PPPoE to provide secure broadband Internet access to small businesses and home users.