Network Security Principles and Practices

Summary

RADIUS is a standardized protocol that can help you implement AAA functionality on Cisco devices. This chapter discussed how RADIUS is used to help perform AAA functions for a NAS. The RADIUS packet format was discussed, along with how it encrypts the user passwords for secrecy. We looked at the three aspects of AAA as they correspond to RADIUS. This chapter concludes the two chapters devoted to the discussion of the security server (AAA server) protocols that are supported on Cisco devices. The usefulness of these protocols, however, remains evident throughout the book.