Avaya Configuring RADIUS Manual de usuario descargar pdf (Pagina 33)

RADIUS Overview

303538-A Rev 00

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RADIUS Authentication

You configure RADIUS authentication on a slot-by-slot basis. Therefore, a call

designated for a RADIUS-configured slot performs authentication. If the router is

already using a slot for dial-on-demand, dial backup, or bandwidth-on-demand

service, you cannot configure this slot for authentication. This restriction does not

apply if the slot is configured with a demand circuit group that uses only one

demand pool. In this case, you can configure authentication.

When a remote user calls the RADIUS client, the client passes the call request,

referred to as the access challenge, to the RADIUS server. The access challenge

contains the user’s name and password. The server verifies the user’s identity and,

for authorized callers, responds with an access accept message, which includes

the required access information. This information is sent to the client, which

passes it to the remote user. If the remote user is not authorized, the server

responds with an access reject message.

The client can pass multiple requests to the server simultaneously. If the client

cannot reach the server, and you configured an alternate server, the client passes

the request to the alternate server.

The authentication process occurs only once for each call. Once RADIUS

authentication is complete, the remote user can communicate with the destination

network.

Using PPP for Dial-up Connections

The Bay Networks RADIUS client uses Point-to-Point Protocol (PPP) for the

dial-up line between itself and the remote user. When you configure RADIUS,

Site Manager automatically configures PPP for the client.

To identify itself to the server, the remote user uses the PPP Challenge Handshake

Authentication Protocol (CHAP) or Password Authentication Protocol (PAP). The

client includes the remote user’s CHAP name and secret or PAP ID and password

in the access challenge to the server.

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Avaya Configuring RADIUS Manual de usuario Pagina 33