
Configuring Dial Services
3-2 114062 Rev. A
CHAP is the default authentication protocol. To select PAP, you must go to the
PPP Interface List window, select the special line record for dial services, and
specify PAP in the Local Authentication Protocol parameter. For more
information about CHAP and PAP, see Configuring PPP Services.
Types of Authentication
You can configure one-way authentication or two-way authentication. In two-way
authentication both routers can authenticate the caller. In one-way authentication,
only the receiving router does the authentication.
Two-Way Authentication
Figure 3-1 shows an example of two-way authentication. For CHAP, Router A
initiates a CHAP challenge, and Router B responds. Router A responds with a
Response Match and the connection is activated.
Figure 3-1. 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
Komentarze do niniejszej Instrukcji