ZyXEL Communications NWA-3500 ユーザーズマニュアル

Chapter 10 Wireless Security Screen

NWA-3500/NWA-3550 User’s Guide

Authentication is the process of verifying whether a wireless device is allowed to 
use the wireless network. You can make every user log in to the wireless network 
before they can use it. However, every device in the wireless network has to 
support IEEE 802.1x to do this.

For wireless networks, you can store the user names and passwords for each user 
in a RADIUS server. This is a server used in businesses more than in homes. If you 
do not have a RADIUS server, you cannot set up user names and passwords for 
your users.

Unauthorized wireless devices can still see the information that is sent in the 
wireless network, even if they cannot use the wireless network. Furthermore, 
there are ways for unauthorized wireless users to get a valid user name and 
password. Then, they can use that user name and password to use the wireless 
network.

You can configure up to 16 security profiles in your NWA. The following table 
shows the relative effectiveness of wireless security methods:.

The available security modes in your NWA are as follows:

• None. No data encryption.
• WEP. Wired Equivalent Privacy (WEP) encryption scrambles the data 

transmitted between the wireless stations and the access points to keep 

network communications private.

Table 39   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