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PPP Authentication Protocols - Coggle Diagram
PPP Authentication Protocols
CHAP :checkered_flag:
-CHAP is more secure than PAP.
-It involves a three-way exchange of a shared secret.
-provides protection against replay attacks
PAP
:<3:
PAP is a very basic two-way process with no encryption.
-The username and password are sent in plaintext
-If it is accepted, the connection is allowed.
-PAP is not a strong authentication protocol.
Authentication takes place before the network layer protocol configuration phase begins. :black_flag:
Password Authentication Protocol (PAP) :<3:
1)Initiating PAP –
R1 Sends its PAP username and password to R3.
2)Completing PAP –
R3 Evaluates R1’s username and password against its local database.
If it matches, it accepts the connection
If not, it rejects the connection.
-Challenge Handshake Authentication Protocol (CHAP) : :checkered_flag:
1) R3 initiates the 3-way handshake and sends a challenge message to R1.
2) The remote node responds with a value that is calculated using a one-way hash function.
3) The local router checks the response against its own calculation of the expected hash value. If the values match, the initiating node acknowledges the authentication.
PPP Authentication Command :fire:
PAP
CHAP
PAP CHAP
CHAP PAP
