This section describes how to configure Password Authentication Protocol (PAP) authentication. PAP uses simple passwords.
A FW functions as an authenticator and uses PAP to authenticate its peer. PAP authentication is performed locally on the authenticator or on a remote authentication server. To implement PAP authentication, configure user accounts and the authentication mode. If remote authentication is used, configure an authentication server as well.
PAP uses simple passwords and is the least secure authentication protocol. After a PPP link is established, the device to be authenticated repeatedly sends a user name and a password until authentication is complete. During PAP authentication, the transmitted user name and password are susceptible to monitoring.
By default, PPP packets are not authenticated.
Display the system view.
system-view
Display the interface view.
interface interface-type interface-number
Configure the local end to authenticate its peer end in PAP mode.
ppp authentication-mode [ chap ] pap
The ppp authentication-mode chap pap command enables CHAP negotiation to take precedence over PAP negotiation during LCP negotiation. If the authenticator supports neither of these two modes, negotiation fails.
Display the system view.
system-view
Display the interface view.
interface interface-type interface-number
Enable the local end to be authenticated by the peer end in PAP mode and send a PAP user name and a password.
ppp pap local-user user-name password cipher password