16ViewsInterface viewPredefined user rolesnetwork-adminExamples# Configure Serial 2/1/0 to reject ACFC requests received from the remote peer. system-view[Sysname] interface serial 2/1/0[Sysname-Serial2/1/0] ppp acfc remote-rejectppp authentication-modeUse ppp authentication-mode to configure PPP authentication on an interface.Use undo ppp authentication-mode to restore the default.Syntaxppp authentication-mode { chap | ms-chap | ms-chap-v2 | pap } * [ [ call-in ] domain{ isp-name | default enable isp-name } ]undo ppp authentication-modeDefaultPPP authentication is disabled on an interface.ViewsInterface viewPredefined user rolesnetwork-adminParameterschap: Uses CHAP authentication.ms-chap: Uses MS-CHAP authentication.ms-chap-v2: Uses MS-CHAP-V2 authentication.pap: Uses PAP authentication.call-in: Authenticates the call-in users only. This keyword can be configured when the local end actsas the receiving end of DDR calls.For more information about DDR, seeLayer 2—WAN AccessConfiguration Guide.domain isp-name: Specifies the ISP domain name for authentication, a case-insensitive string of 1to 255 characters.default enable isp-name: Specifies the default ISP domain name for authentication, acase-insensitive string of 1 to 255 characters.Usage guidelinesPPP authentication includes the following categories:• PAP—Two-way handshake authentication. The password is in plain text or cipher text.• CHAP—Three-way handshake authentication. The password is in plain text or cipher text.• MS-CHAP—Three-way handshake authentication. The password is in cipher text.• MS-CHAP-V2—Three-way handshake authentication. The password is in cipher text.
