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RADIUS is an information interaction protocol of distributed and C/S construction. It can protect
the network from unauthorized visits. It is used in the network that allows remote visits but
requests the higher security. It defines the RADIUS packet format and the message
transmission mechanism. It stipulates that using UDP as transport layer protocol to encapsulate
the RADIUS packet.
At the beginning, RADIUS is the AAA protocol for the dial-up users only. With the development
of the user accesses, RADIUS adapts to various access, including Ethernet access and ADSL
access. It accesses server through authentication and authorization, and collects records the
usage of network source through accounting.
Step 1
Select Advanced > Seldom-used > Security > Radius Settings.
The Radius Settings interface is displayed. See Figure 3-48.
Step 2
Click Add.
The Add New Server interface is displayed. See Figure 3-49.
Figure 3-48
Radius configuration
Advanced Settings 43
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