Avaya Configuring Dial Services Bedienungsanleitung Seite 124

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Configuring Dial Services
5-2
308621-14.00 Rev 00
Enabling the called router to dynamically identify the calling router lets a single
dial interface (ISDN or modem) at a remote router be the connection point to
multiple routers.
To set up authentication, you must configure the routers caller resolution table
(see Chapter 16 “Customizing Caller Resolution”). For more information about
CHAP and PAP, see Configuring PPP Services.
Types of Authentication
You can configure one-way authentication or two-way authentication. Two-way
authentication enables both routers to authenticate each other. One-way
authentication enables only the called router to authenticate the remote peer.
Two-Way Authentication
Figure 5-1
shows an example of two-way authentication.
Figure 5-1. Two-Way Authentication
Router A Router B
Authenticate request
Authenticate response
Two-Way Authentication -- PAP
Router A or B can initiate authentication
DS0030A
Challenge
Response match
Response
Router A Router B
Two-Way Authentication -- CHAP
Router A or B can initiate authentication
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