Wep Encryption; Overview; Introduction To Radius; Types Of Radius Messages - ZyXEL Communications ZyWALL 5 User Manual

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Table of Contents

Table 23 Wireless Security Relational Matrix (continued)

AUTHENTICATION

MANAGEMENT PROTOCOL

6.4 WEP Encryption

WEP (Wired Equivalent Privacy) as specified in the IEEE 802.11 standard provides methods

for both data encryption and wireless station authentication. WEP provides a mechanism for

encrypting data using encryption keys. Both the AP and the wireless stations must use the

same WEP key to encrypt and decrypt data. Your ZyWALL allows you to configure up to four

64-bit or 128-bit WEP keys, but only one key can be used at any one time.

6.5 802.1x Overview

The IEEE 802.1x standard outlines enhanced security methods for both the authentication of

wireless stations and encryption key management. Authentication can be done using the local

user database internal to the ZyWALL (authenticate up to 32 users) or an external RADIUS

server for an unlimited number of users.

RADIUS is based on a client-sever model that supports authentication and accounting, where

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

the following tasks among others:

• Authentication

Determines the identity of the users.

• Accounting

Keeps track of the client's network activity.

RADIUS user is a simple package exchange in which your ZyWALL acts as a message relay

between the wireless station and the network RADIUS server.

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

RADIUS server for user authentication:

• Access-Request

Chapter 6 Wireless LAN

ZyWALL 5 User's Guide