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This protocol is used for authentication purposes; it sends cleartext usernames and passwords with no forms of encryption or a means of challenging. What authentication protocol is this?
PAP
CHAP
MSCHAP
Password Authentication Protocol (PAP) is a weak authentication protocol. It does not encrypt any data and the authentication credentials are sent in the clear. There is no method for challenging at either end; therefore, it is very easy to intercept and masquerade as a legitimate user. EDIT: POP isn't secure either. POP needs SSL/TLS configured otherwise it's passed in plaintext as well. Confusing question.
Edit: because POP and PAP are correct answers,deleting POP.
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