Chapter 19: Security: 802.1X Authentication; Overview Of 802.1X - Cisco 300 Series Administration Manual

Security: 802.1X Authentication

Overview of 802.1X

Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
This section describes 802. 1 X authentication.
It covers the following topics:
• Overview of 802.1X
• Authenticator Overview
• Common Tasks
• 802.1X Configuration Through the GUI
• Defining Time Ranges<300-500>
• Authentication Method and Port Mode Support<300-500>
802. 1 x authentication restricts unauthorized clients from connecting to a LAN
through publicity-accessible ports. 802. 1 x 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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