Question

Brian is selecting an authentication protocol for a PPP connection. He would like to select an option that encrypts both usernames and passwords and protects against replay using a challenge/response dialog. He would also like to re-authenticate remote systems periodically. Which protocol should he use? Group of answer choices

LEAP
PAP
CHAP
EAP

Answer 1

CHAP

Step-by-step explanation:

CHAP or Challenge-Handshake Authentication Protocol is the best option for Brian´s PPP connection. CHAP allows to validate the identity of users by using the three-way handshake at the first time of the connection and again at any moment after establishing the initial communication.