Radius with PAP

PAP stands for Password Authentication protocol. It is an authentication protocol uses a password. PAP is used in Point-to-Point protocol, to validate users for giving access to system resources.

PAP life cycle is very simple,

1. Client sends Authentication-request (which contains username and password).

2. If credentials are valid, server sends Authentication-ack, else Authentication-nak.

Go through following wiki link for more information.

https://en.wikipedia.org/wiki/Password_authentication_protocol

For PAP, Radius client takes PAP id and password sends them in an Access-Request packet as the User-Name and User-Password. Radius client may include the Attributes Service-Type = Framed-User and Framed-Protocol = PPP as a hint to the RADIUS server that PPP service is expected.

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