D-Link DFL-800 Application Note page 16

6.2.3) Setup WinRadius Server
6.2.3.1)
1)
2)
3)
Set the Secret Key
Click the "System" from the "Setting" drop down list
Key in the "NAS Secret".
Note: The NAS Secret must be the same key set in the DFL-800 "Shared
Key".
Click "OK", close and start the WinRadius Server again.
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