NAS
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The Network Access Server (NAS) is the device that clients connect
to in order to get access to the network ...
... Network Access Identifier (NAI) submitted by the user to the NAS in
the initial network authentication. It is also expected that NASes ...
... NAS in
the initial network authentication. It is also expected that NASes
will use the NAI as part of the process of opening a new tunnel ...