Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 04-08-2006 Installation Manual page 555

system tries to use the highest possible data transmission rate. Some WLAN cards
do not support the setting of bit rates.
Access Point
In an environment with several access points, one of them can be preselected by
specifying the MAC address.
30.1.4 Utilities
hostap (package hostap) is used to run a WLAN card as an access point. More infor-
mation about this package is available at the project home page
.epitest.fi/).
kismet (package kismet) is a network diagnosis tool with which to listen to the WLAN
packet traffic. In this way, you can also detect any intrusion attempts in your network.
More information is available at
the manual page.
30.1.5 Tips and Tricks for Setting Up a
WLAN
These tips can help tweak speed and stability as well as security aspects of your WLAN.
Stability and Speed
The performance and reliability of a wireless network mainly depend on whether the
participating stations receive a clean signal from the other stations. Obstructions like
walls greatly weaken the signal. The more the signal strength sinks, the more the
transmission slows down. During operation, check the signal strength with the iwconfig
utility on the command line (Link Quality field) or with KInternet in KDE. If you
have problems with the signal quality, try to set up the devices somewhere else or adjust
the position of the antennas of your access points. Auxiliary antennas that substantially
improve the reception are available for a number of PCMCIA WLAN cards. The rate
specified by the manufacturer, such as 54 MBit/s, is a nominal value that represents
the theoretical maximum. In practice, the maximum data throughput is no more than
half this value.
http://www.kismetwireless.net/
(http://hostap
and in
Wireless Communication 555