![The TCP/IP Guide - PPP Authentication Protocols: Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) The TCP/IP Guide - PPP Authentication Protocols: Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP)](http://www.tcpipguide.com/free/diagrams/ppppap.png)
The TCP/IP Guide - PPP Authentication Protocols: Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP)
![Authenticating Callers on a Link - Managing Serial Networks Using UUCP and PPP in Oracle® Solaris 11.3 Authenticating Callers on a Link - Managing Serial Networks Using UUCP and PPP in Oracle® Solaris 11.3](https://docs.oracle.com/cd/E53394_01/html/E54795/figures/PAP-auth-pro.jpg)
Authenticating Callers on a Link - Managing Serial Networks Using UUCP and PPP in Oracle® Solaris 11.3
FAQ-In What Cases Can the Non-authentication Mode Be Configured When the PC Dials up to the LNS- Huawei
![How to enable CHAP on Radius server (NPS) when using CHAP for Radius authentication on the firewall | SonicWall How to enable CHAP on Radius server (NPS) when using CHAP for Radius authentication on the firewall | SonicWall](https://prod-support-images-cfm.s3.amazonaws.com/KB_1-1XOF7F1_2015-05-20_18-00-54.png)
How to enable CHAP on Radius server (NPS) when using CHAP for Radius authentication on the firewall | SonicWall
![How do I edit the CHAP password for an iSCSI initiator on my ReadyNAS OS 6 storage system? | Answer | NETGEAR Support How do I edit the CHAP password for an iSCSI initiator on my ReadyNAS OS 6 storage system? | Answer | NETGEAR Support](http://www.downloads.netgear.com/files/answer_media/images/23305/23305-2.png)