ppp authentication pap|chap|ms-chap|ms-chap-v2

This command enables several authentication protocols on the ppp protocol of the specified tunnel interface. Use the no form of this command to disable a specific authentication protocol.

Syntax

ppp authentication pap
ppp authentication chap
ppp authentication ms-chap
ppp authentication ms-chap-v2 

Command	Description
pap	Defines the Password Authentication Protocol.
chap	Defines the Challenge Handshake Authentication Protocol.
ms-chap	Defines the Microsoft Challenge Handshake Authentication Protocol.
ms-chap-v2	Defines the Microsoft Challenge Handshake Authentication Protocol - Version 2.

Default

By default, all protocols are enabled.

Command Mode

Privileged User

Example

This example disable the pap protocol on interface l2tp 3.

(conf-if-L2TP 3)# no ppp authentication pap