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Appendix E Wireless LANs

P-2602H(W)(L)-DxA User’s Guide

412

• User based identification that allows for roaming.

• Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for

centralized user profile and accounting management on a network RADIUS server.

• Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional

authentication methods to be deployed with no changes to the access point or the wireless

stations.

RADIUS

RADIUS is based on a client-server model that supports authentication, authorization and

accounting. The access point is the client and the server is the RADIUS server. The RADIUS

server handles the following tasks:

• Authentication

Determines the identity of the users.

• Authorization

Determines the network services available to authenticated users once they are connected

to the network.

• Accounting

Keeps track of the client’s network activity.

RADIUS is a simple package exchange in which your AP acts as a message relay between the

wireless station and the network RADIUS server.

Types of RADIUS Messages

The following types of RADIUS messages are exchanged between the access point and the

RADIUS server for user authentication:

• Access-Request

Sent by an access point requesting authentication.

• Access-Reject

Sent by a RADIUS server rejecting access.

• Access-Accept

Sent by a RADIUS server allowing access.

• Access-Challenge

Sent by a RADIUS server requesting more information in order to allow access. The

access point sends a proper response from the user and then sends another Access-Request

message.

The following types of RADIUS messages are exchanged between the access point and the

RADIUS server for user accounting:

• Accounting-Request

Sent by the access point requesting accounting.

• Accounting-Response

Sent by the RADIUS server to indicate that it has started or stopped accounting.

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ZyXEL Communications P-2602HW-63C Guía de usuario Pagina 412