Graco GE-DS-242-POE Manual De Usuario

 

Chapter 4: Web-Based Management 

GE-DS-242-PoE Managed Ethernet Switch User Manual 

109 

802.1x is an IEEE authentication specification which prevents the client from 
accessing a wireless access point or wired switch until it provides authority, like the 
user name and password that are verified by an authentication server (such as 
RADIUS server). 

The IEEE 802.1X standard defines a client-server-based access control and 
authentication protocol that restricts unauthorized clients from connecting to a LAN 
through publicly accessible ports. The authentication server authenticates each client 
connected to a switch port before making available any services offered by the 
switch or the LAN.  
Until the client is authenticated, 802.1X access control allows only Extensible 
Authentication Protocol over LAN (EAPOL) traffic through the port to which the client 
is connected. After authentication is successful, normal traffic can pass through the 
port. 
This section includes this conceptual information: 
•  Device Roles 
•  Authentication Initiation and Message Exchange 
•  Ports in Authorized and Unauthorized States 
•  Device Roles 
With 802.1X port-based authentication, the devices in the network have specific roles 
as shown below.