ZyXEL Communications 802.11a/g Wireless CardBus Card ZyXEL AG-120, User Manual

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Chapter 1 Introducing the NWA
NWA-3500/NWA-3550 User’s Guide
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• Enable wireless security on your NWA. Choose the most secure encryption
method that all devices on your network support. See Section 10.4 on page 150
for directions on configuring encryption. If you have a RADIUS server, enable
IEEE 802.1x or WPA(2) user identification on your network so users must log in.
This method is more common in business environments.
• Hide your wireless network name (SSID). The SSID can be regularly broadcast
and unauthorized users may use this information to access your network. See
Section 9.4.1 on page 144 for directions on using the web configurator to hide
the SSID.
• Enable the MAC filter to allow only trusted users to access your wireless network
or deny unwanted users access based on their MAC address. See Section Note:
on page 174 for directions on configuring the MAC filter.
1.6 Maintaining Your NWA
Do the following things regularly to keep your NWA running.
• Check the ZyXEL website (www.zyxel.com.tw) regularly for new firmware for
your NWA. Ensure you download the correct firmware for your model.
• Back up the configuration (and make sure you know how to restore it).
Restoring an earlier working configuration may be useful if the device becomes
unstable or even crashes. If you forget your password, you will have to reset the
NWA to its factory default settings. If you backed up an earlier configuration file,
you would not have to totally re-configure the NWA. You could simply restore
your last configuration.
1.7 Hardware Connections
See your Quick Start Guide for information on making hardware connections.
Note: Your NWA has two wireless LAN adaptors, WLAN1 and WLAN2. WLAN1 uses
the RF1 antenna or the antenna on the right (when facing the device) and
WLAN2 uses the RF2 antenna or the antenna on the left. If you connect only
one antenna, you can use only the associated wireless LAN adaptor.