Authentication - Cisco ROUTER-SDM-CD User Manual

Chapter 6 Edit Interface/Connection
Note

Authentication

CHAP/PAP
OL-4015-12
This feature appears only if supported by the Cisco IOS release on your router.
To choose a dynamic DNS method to use, do one of the following:
Enter the name of an existing dynamic DNS method.
•
Enter the name in the Dynamic DNS Method field exactly as it appears in the
list in Configure > Additional Tasks > Dynamic DNS Methods.
Choose an existing dynamic DNS method from a list.
•
Click the drop-down menu and choose an existing method. A window with a
list of existing dynamic DNS methods opens. This menu choice is available
only if there are existing dynamic DNS methods.
Create a new dynamic DNS method.
•
Click the drop-down menu and choose to create a new dynamic DNS method.
To clear an associated dynamic DNS method from the interface, choose None
from the drop-down menu.
This page is displayed if you enabled
encapsulation for an ATM or Ethernet connection, or you are configuring an ISDN
BRI or analog modem connection. Your service provider or network administrator
may use a Challenge Handshake Authentication Protocol (CHAP) password or a
Password Authentication Protocol (PAP) password to secure the connection
between the devices. This password secures both incoming and outgoing access.
Check the box for the type of authentication used by your service provider. If you
do not know which type your service provider uses, you can check both boxes: the
router will attempt both types of authentication, and one attempt will succeed.
CHAP authentication is more secure than PAP authentication.
Cisco Router and Security Device Manager 2.5 User's Guide
PPP for a serial connection or
Authentication
PPPoE
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