ZyXEL Communications NWA-3550 ユーザーズマニュアル

 Chapter 10 Wireless Security Screen

NWA-3500/NWA-3550 User’s Guide

This section provides technical background information on the topics discussed in 
this chapter.

The following is a general guideline in choosing the security mode for your NWA.

• Use WPA(2) security if you have WPA(2)-aware wireless clients and a RADIUS 

server. WPA has user authentication and improved data encryption over WEP.

• Use WPA(2)-PSK if you have WPA(2)-aware wireless clients but no RADIUS 

server.    

• If you don’t have WPA(2)-aware wireless clients, then use WEP key encrypting. 

A higher bit key offers better security. You can manually enter 64-bit, 128-bit or 

152-bit WEP keys.

More information on Wireless Security can be found in 

Group Key 
Update Timer

The Group Key Update Timer is the rate at which the AP sends a 
new group key out to all clients. The re-keying process is the WPA 
equivalent of automatically changing the group key for an AP and all 
stations in a WLAN on a periodic basis. Setting of the Group Key 
Update Timer is also supported in WPA-PSK mode. The NWA’s 
default is 1800 seconds (30 minutes). 

Apply

Click Apply to save your changes.

Reset

Click Reset to begin configuring this screen afresh.

Table 46   Wireless > Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX