# RADIUS: Basics Process Description

- ## 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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