The password authentication protocol PAP belongs to one of the link control protocols, mainly by providing a method of establishing a peer-to-peer structure ID through a 2-time handshake. This is implemented on the basis of initial link determination.
After completing the link determination, the peer structure repeats the ID / password to the identity verifier until the authentication is received or the connection is stopped.
PAP is not an effective authentication method that is sent on the circuit on the circuit in the text format, and there is no protection for eavesdropping, playback or repeated attacks. The peer structure can only control the frequency. So even more efficient authentication methods such as CHAP, their implementation must provide a valid negotiation mechanism before PAP.
This authentication method is suitable for environments where you can use clear text to log in to the remote host. In this case, the method provides security similar to the remote host with a conventional user. For more information, please visit the following page: 中文 版: http://www.networkDictionary.com/chinese/protocols/pap.php English version: http://www.networkDictionary.com/protocols/pap.php
