Feature Description
In releases prior to 2021.01.0, the SMF used only MSISDN values for the user authentication. In this release, the SMF uses the user name and original password to support Point-to-Point Protocol (PPP), Password Authentication Protocol (PAP), Challenge-Handshake Authentication Protocol (CHAP), or Microsoft CHAP (MSCHAP) authentication.
The SMF configuration aids in the protocol selection for the user authentication. If the secondary authentication is enabled in DNN profile, the SMF interacts with the RADIUS server to perform RADIUS authentication.
To implement the authentication, the RADIUS client residing within the SMF sends the User-Name and User-Password attributes in Access-Request message to the RADIUS server.