Difference between revisions of "Wlan"

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(you must first issue yast2 lan, then you can do iwlist)
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This article explains how to use wireless la(n) networking with Linux. It has been tested with SUSE Linux 12.2. For the commands below you need to be logged in as root user.
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This article explains how to connect to a wireless network with Linux. It has been tested with SUSE Linux 12.2. For the commands below you need to be logged in as root user.
  
 
= Find out your devices =
 
= Find out your devices =
Line 11: Line 11:
 
In this example we will use SUSE Linux 12.2 and a Conceptronic USB WLAN adapter with a RALink chipset. To activate the card, set it up with
 
In this example we will use SUSE Linux 12.2 and a Conceptronic USB WLAN adapter with a RALink chipset. To activate the card, set it up with
 
  yast2 lan
 
  yast2 lan
Yast will offer to install the packages iw and kernel-firmware as well. This is important because the firmware must fit to the drivers' version. So accept installing iw and both iw and kernel-firmware will be installed. Then yast will create a script /etc/sysconfig/ifcfg-wlan0 containing your device's parameters.
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Yast will offer to install the packages iw and kernel-firmware as well. This is important because the firmware must fit to the drivers' version. So accept installing iw and both iw and kernel-firmware will be installed. Then yast will create a script /etc/sysconfig/ifcfg-wlan0 containing your device's parameters. If you select it, yast will also do everything around wpa-supplicant so you can use WPA secured WLAN.
  
 
This will allow you the next command you need to call:
 
This will allow you the next command you need to call:
 
  ifup wlan0
 
  ifup wlan0
  
And you device will be activated.
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And your device will be activated.
  
 
= Find out your networks =
 
= Find out your networks =
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                     Channel:11
 
                     Channel:11
 
                     Frequency:2.462 GHz (Channel 11)
 
                     Frequency:2.462 GHz (Channel 11)
                     Quality='''''52/100'''''  Signal level:-46 dBm
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                     '''''Quality=52/100'''''  Signal level:-46 dBm
 
                     Encryption key:on
 
                     Encryption key:on
 
                     Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
 
                     Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
Line 52: Line 52:
 
                     Extra: Last beacon: 116ms ago
 
                     Extra: Last beacon: 116ms ago
 
In this example you have two cells of a wireless network with the ESSID ''MYLAN''. The quality of the connection is 52%.
 
In this example you have two cells of a wireless network with the ESSID ''MYLAN''. The quality of the connection is 52%.
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= See also =
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* [[connect to the Net]]

Latest revision as of 19:11, 24 November 2015

This article explains how to connect to a wireless network with Linux. It has been tested with SUSE Linux 12.2. For the commands below you need to be logged in as root user.

Find out your devices

Find out what wlan devices you have

# hwinfo --wlan --short
network:                                                        
  wlan0                Ralink 802.11 bg WLAN

In this example, you have one wireless network device. It is named wlan0.

Activate the card

In this example we will use SUSE Linux 12.2 and a Conceptronic USB WLAN adapter with a RALink chipset. To activate the card, set it up with

yast2 lan

Yast will offer to install the packages iw and kernel-firmware as well. This is important because the firmware must fit to the drivers' version. So accept installing iw and both iw and kernel-firmware will be installed. Then yast will create a script /etc/sysconfig/ifcfg-wlan0 containing your device's parameters. If you select it, yast will also do everything around wpa-supplicant so you can use WPA secured WLAN.

This will allow you the next command you need to call:

ifup wlan0

And your device will be activated.

Find out your networks

To find out the networks you can access, use iwlist:

# iwlist wlan0 scanning
wlan0     Scan completed :
          Cell 01 - Address: 00:1D:7E:B4:E9:31
                    ESSID:"MYLAN"
                    Mode:Master
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=48/100  Signal level:-70 dBm
                    Encryption key:on
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1A4C1003FFFF000000000000000000000000000000000000000000
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:tsf=000001a52e792180
                    Extra: Last beacon: 764ms ago
          Cell 02 - Address: 00:0D:88:A0:BD:32
                    ESSID:"MYLAN"
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=52/100  Signal level:-46 dBm
                    Encryption key:on
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Extra:tsf=00000000058c6430
                    Extra: Last beacon: 116ms ago

In this example you have two cells of a wireless network with the ESSID MYLAN. The quality of the connection is 52%.

See also