CCNP Security Identity Management SISE 300-715 Official Cert Guide

Chapter 3

Extensible Authentication Protocol (EAP) over LAN: 802.1X

This chapter covers the following topics:

• EAP types

• Supplicant, authenticator, and authentication server

• Supplicant options

• Network access devices

In the early 2000s, the IEEE standardized 802.1X as a solution for port-based network access control. It was predicted to revolutionize networking, and no device would be able to plug in and communicate on a network without the users identifying themselves and being authorized again. It took about a decade for 802.1X to really start catching on. This book went to press in 2020, nearly two decades after the IEEE standardized 802.1X, and network admins are still rather fearful of it—but they do not need to be!

There are three fundamental ...