Chapter 20: Security: 802.1X Authentication; Overview Of 802.1X - Cisco Small Business 200 Series Administration Manual

Security: 802.1X Authentication
This section describes 802.1X authentication.
It covers the following topics:
•

Overview of 802.1X

• Authenticator Overview
• Common Tasks
• 802.1X Configuration Through the GUI
Overview of 802.1X
802.1x authentication restricts unauthorized clients from connecting to a LAN through publicity-accessible
ports. 802.1x authentication is a client-server model. In this model, network devices have the following
specific roles.
• Client or supplicant
• Authenticator
• Authentication server
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