Information, Computer and Network Security Terms Glossary and Dictionary

PAP: Password Authentication Protocol

The Password Authentication Protocol (PAP), a Link Control Protocol in the PPP suite, provides a simple method for the peer to establish its identity using a 2-way handshake. This is done only upon initial link establishment. Unlike CHAP, PAP passes the password and the host name or username in the clear (unencrypted). PAP does not itself prevent unauthorized access but merely identifies the remote end. The router or access server then determines whether that user is allowed access.

Related Terms

PAP: Password Authentication Protocol