What are the two PPP authentication protocols?
The PPP authentication protocols are Password Authentication Protocol (PAP) and Challenge-Handshake Authentication Protocol (CHAP). Each protocol uses a secrets database that contains identification information, or security credentials, for each caller that is permitted to link to the local machine.
Is authentication mandatory in PPP?
After the link has been established, PPP provides for an optional authentication phase before proceeding to the network layer protocol phase. The NCP phase then establishes and configures different network layer protocols such as IP. By default, authentication before the NCP phase is not mandatory.
What is the difference between PAP and CHAP authentication?
The main difference between PAP and CHAP is that PAP is an authentication protocol that allows Point to Point Protocol to validate users while CHAP is an authentication protocol which provides better security than PAP.
What is PAP authentication type?
The Password Authentication Protocol (PAP) provides simple password authentication on initial link establishment. It is not a strong authentication method, since passwords are transmitted in clear over the link and there is no protection from repeated attacks during the life of the link.
How does PAP provide authentication?
PAP uses a two-way handshake process for authentication using the following steps.
- Client sends username and password to server. The client wishing to establish a PPP session with a server sends a username and password combination to the server.
- Server accepts credentials and verifies.
What is PAP in PPP?
Password Authentication Protocol (PAP) is a password-based authentication protocol used by Point-to-Point Protocol (PPP) to validate users. PAP is specified in RFC 1334.
What is PPP PAP and CHAP?
Solstice PPP implements peer authentication based on the Password Authentication Protocol (PAP) and the Challenge-Handshake Authentication Protocol (CHAP) defined by RFC 1334. Peer authentication is optional, and is negotiated during the link establishment phase. See “Editing the PPP Path Configuration File (ppp.
How do I verify PPP PAP authentication?
- The login command prompts the user for a name and password.
- login then attempts to authenticate the user by looking up the typed user name and password in the password database.
- If the database contains the user name and password, then the user is authenticated and given access to the system.
What are the two authentication protocols supported by PPP?
Point-to-Point Protocol (PPP) currently supports two authentication protocols: Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP). Both are specified in RFC 1334 and are supported on synchronous and asynchronous interfaces.
What is Password Authentication Protocol PAP?
Password Authentication Protocol. Password Authentication Protocol (PAP) is a password-based authentication protocol used by Point to Point Protocol (PPP) to validate users. Almost all network operating system remote servers support PAP. PAP is specified in RFC 1334.
What is the username and password for PPP peer authentication?
username password . This is the username and password used by the local router to authenticate the PPP peer. When the peer sends its PAP username and password, the local router will check whether that username and password are configured locally. If there is a successful match, the peer is authenticated.
What does it mean when a PPP packet has an unknown protocol?
Protocol-Reject Description Reception of a PPP packet with an unknown Protocol field indicates that the peer is attempting to use a protocol which is unsupported. This usually occurs when the peer attempts to configure a new protocol.