Cisco Systems 2.5 Authentication

6-55
Cisco Router and Security Device Manager 2.5 User’s Guide
OL-4015-12
Chapter6 Edit Interface/Connection
Authentication
Note 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.
Authentication
This page is displayed if you enabled PPP for a serial connection or PPPoE
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) passwo rd to secure the connection
between the devices. This password secures both incoming and outgoing access.
CHAP/PAP
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.