What is Challenge-Handshake Authentication Protocol (CHAP) and how does it work?

by | Nov 19, 2019 | CCNA, CCNP, CompTIA, Exclusive Articles, Network Security, Securing Authentication, Wireless Network And Security

CHAP

Challenge-Handshake Authentication Protocol (CHAP) is a protocol that is used to authenticate a user or a host to an authenticating entity. This protocol is used by Point-to-Point Protocol (PPP) to authenticate network hosts or routers that connect using a PPP link. CHAP is also used by ISPs to authenticate a client to the ISP server before the client gets access to the ISP server and establishes a connection.

How does CHAP work? In this article, we would discuss that in detail.

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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