ZyXEL Communications Corporation G570SV2 Manuel D’Utilisation

Appendix D Wireless LANs

ZyXEL G-570S

 v2 User’s Guide

Wireless security methods available on the ZyXEL Device are data encryption, wireless client 
authentication, restricting access by device MAC address and hiding the ZyXEL Device 
identity.

The following figure shows the relative effectiveness of these wireless security methods 
available on your ZyXEL Device.

"

You must enable the same wireless security settings on the ZyXEL Device and 
on all wireless clients that you want to associate with it. 

In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to 
support extended authentication as well as providing additional accounting and control 
features. It is supported by Windows XP and a number of network devices. Some advantages 
of IEEE 802.1x are:

• 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 
clients.

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

Table 36   Wireless Security Levels

Least       
Secure                                                                                  

Most Secure

Unique SSID (Default)

Unique SSID with Hide SSID Enabled

MAC Address Filtering

WEP Encryption

IEEE802.1x EAP with RADIUS Server Authentication

Wi-Fi Protected Access (WPA)

WPA2