Avaya Configuring RADIUS Manual de usuario descargar pdf (Pagina 20)

Configuring RADIUS

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To enable RADIUS, you must specify the client’s Internet Protocol (IP) address.

As the RADIUS client, the router passes this address to the server when a remote

user makes an authentication or accounting request. The server will not accept the

request without the client’s IP address.

The client can also support a primary server, which is the original destination

server, and an alternate server, which is a server that the client contacts if it cannot

reach the primary server

RADIUS Authentication

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

designated for a RADIUS-configured slot can perform authentication. You can

also configure a slot for authentication even if the router is already using that slot

for a dial-up service. This includes dial-up services for both:

• Unnumbered IP addresses (demand circuit groups). For more information, see

“

Using IP and IPX Unnumbered Protocols for PPP Connections” on page 1-7.

• Numbered IP addresses (dial-on-demand, dial backup, and

bandwidth-on-demand). For more information, see “

Using RADIUS with a

Dial Service” on page 1-8.

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.

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Avaya Configuring RADIUS Manual de usuario Pagina 20