RADIUS: Basics Process Description
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The NAS creates a data packet from this information called the
authentication request. This packet includes information
identifying the specific NAS sending the authentication request,
the port that is being used for the modem connection, and the user
name and password. For protection from eavesdropping the NAS,
acting as a RADIUS client, encrypts (using a shared secret key) the
password before it is sent to the RADIUS server.
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