ZyXEL Communications P-870HW-I Series, User Manual, Page: 96 / 438

P-870HW-I1 User’s Guide
96 Chapter 6 Wireless LAN
Note: It is recommended that wireless networks use WPA-PSK , WPA , or stronger
encryption. IEEE 802.1x and WEP encryption are better than none at all, but it
is still possible for unauthorized devices to figure out the original information
pretty quickly.
When you select WPA2 or WPA2-PSK in your ZyXEL Device, you can also select an option
( WPA compatible ) to support WPA as well. In this case, if some wireless clients support
WPA and some support WPA2, you should set up WPA2-PSK or WPA2 (depending on the
type of wireless network login) and select the WPA compatible option in the ZyXEL Device.
Many types of encryption use a key to protect the information in the wireless network. The
longer the key, the stronger the encryption. Every wireless client in the wireless network must
have the same key.
6.2.5 One-Touch Intelligent Security Technology (OTIST)
With ZyXEL’s OTIST, you set up the SSID and the encryption (WEP or WPA-PSK) on the
ZyXEL Device. Then, the ZyXEL Device transfers them to wireless clients in the wireless
network. As a result, you do not have to set up the SSID and encryption on every wireless
client.
The wireless clients in the wireless network have to support OTIST, and they have to be in
range of the ZyXEL Device when you activate it. See
Section 6.5 on page 108 for more
details.
6.3 Wireless Performance Overview
The following sections introduce different ways to improve the performance of the wireless
network.
6.3.1 Quality of Service (QoS)
You can turn on Wi-Fi MultiMedia (WMM) QoS to improve the performance of voice and
video applications in the wireless network. QoS gives high priority to voice and video, which
makes them run more smoothly. Similarly, it gives low priority to many large file downloads
so that they do not reduce the quality of other applications.
6.4 General Wireless LAN Screen
Note: If you are configuring the ZyXEL Device from a computer connected to the
wireless LAN and you change the ZyXEL Device’s SSID or WEP settings, you
will lose your wireless connection when you click
Apply . You must then change
the wireless settings of your computer to match the ZyXEL Device’s new
settings.