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PAP stands for Password Authentication Protocol.
It is the simplest authentication protocol used by FreeRADIUS, as it requires only the Username and Password RADIUS attributes (defined by the original RFCs) to authenticate users.
By extension, it is also one of the least secure protocols, because the password is protected only by the shared secret, so anyone who is able to sniff RADIUS UDP datagrams between the client and the server can pretty easily brute-force break that.
Last edited by Matthew Newton, 2017-08-03 21:11:47
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