ZyXEL Communications NWA-3550, User Manual

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Chapter 10 Wireless Security Screen
NWA-3500/NWA-3550 User’s Guide
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10.3 Technical Reference
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 or WPA2 security if you have WPA/WPA2-aware wireless clients and a
RADIUS server. WPA has user authentication and improved data encryption
over WEP.
• Use WPA-PSK or WPA2-PSK if you have WPA/WPA2-aware wireless clients but
no RADIUS server.
• If you don’t have WPA/WPA2-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 Appendix A on page 303 .
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 44 Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX
LABEL DESCRIPTION