dBm (updated)
Typical/Reference : Quality:26/94 Signal level:-60 dBm Noise level:-90
dBm
24.6.3 Security
If you want to set up a wireless network, remember that anybody within the transmission
range can easily access it if no security measures are implemented. Therefore, be sure
to activate an encryption method. All WLAN cards and access points support WEP
encryption. Although this is not entirely safe, it does present an obstacle for a potential
attacker.
For private use, use WPA-PSK if available. Although Linux supports WPA on most
hardware components, some drivers do not offer WPA support. It may also not be
available on older access points and routers with WLAN functionality. For such devices,
check if WPA can be implemented by means of a rmware update. If WPA is not
available, WEP is better than no encryption. In enterprises with advanced security re-
quirements, wireless networks should only be operated with WPA.
Use strong passwords for your authentication method. For example, the Web page
https://www.grc.com/passwords.htm generates random 64 character pass-
words.
24.7 Troubleshooting
If your WLAN card is not automatically detected, check whether it is supported by
openSUSE. A list of supported WLAN network cards is available under http://en
.opensuse.org/HCL:Network_(Wireless). If your card is not supported, it
may be possible to make it work using the Microsoft Windows drivers with Ndiswrapper.
Please refer to http://en.opensuse.org/SDB:Ndiswrapper for detailed
information.
If your WLAN card fails to respond, check the following prerequisites:
1.
Do you know the device name of the WLAN card? Usually it is wlan0. Check with
the tool ifconfig.
Wireless LAN 445
