WLAN Informationen ermitteln per CLI

Dies ist eine Auflistung diverse Tools zur Ermittlung von WLAN-Information bei Linux.

Diese Programm hilft, wenn man mehr Informationen über das WLAN haben möchte.

iwlist wlp3s0 bit | grep "Current"
          Current Bit Rate=135 Mb/s
iwlist wlp3s0 bitrate | grep "Current"
          Current Bit Rate=135 Mb/s
iwlist wlp3s0 rate | grep "Current"
          Current Bit Rate=135 Mb/s

iwlist wlp3s0 channel | grep "Current"
          Current Frequency:5.5 GHz (Channel 100)
iwlist wlp3s0 freq | grep "Current"
          Current Frequency:5.5 GHz (Channel 100)
iwlist wlp3s0 frequency | grep "Current"
          Current Frequency:5.5 GHz (Channel 100)

iwlist wlp3s0 scan
wlp3s0    Scan completed :
          Cell 01 - Address: 68:92:34:6B:83:4C
                    Channel:100
                    Frequency:5.5 GHz (Channel 100)
                    Quality=49/70  Signal level=-61 dBm  
                    Encryption key:on
                    ESSID:"Heiniger_CNET"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000005b36846
                    Extra: Last beacon: 96ms ago
                    IE: Unknown: 000D4865696E696765725F434E4554
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 030164
                    IE: Unknown: 070A434820240817640A1E00
                    IE: Unknown: DD1E00904C33CE011BFFFF000000000000000000001000000000000000000000
                    IE: Unknown: 2D1ACE011BFFFF000000000000000000001000000000000000000000
                    IE: Unknown: DD1A00904C3464050000000000000000000000000000000000000000
                    IE: Unknown: 3D1664050000000000000000000000000000000000000000
                    IE: Unknown: 7F0400000000
                    IE: Unknown: DD180050F20201018E0003A4000027A4000042435E0062322F00
                    IE: Unknown: DD080013920100010525
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: C8:CB:B8:E8:0C:D1
                    Channel:13
                    Frequency:2.472 GHz (Channel 13)
                    Quality=44/70  Signal level=-66 dBm  
                    Encryption key:on
                    ESSID:"W30KM98"
                    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
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=3200099a7f352ec3
                    Extra: Last beacon: 3867ms ago
                    IE: Unknown: 00075733304B4D3938
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 03010D
                    IE: Unknown: 23021300
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: 32043048606C
                    IE: Unknown: 470104
                    IE: Unknown: 2D1AAC0103FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160D080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown: DD180050F20201018E0003A4000027A4000042435E0062322F00
          Cell 03 - Address: C8:CB:B8:E8:0C:D0
                    Channel:13
                    Frequency:2.472 GHz (Channel 13)
                    Quality=41/70  Signal level=-69 dBm  
                    Encryption key:on
                    ESSID:""
                    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
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000099a7f352180
                    Extra: Last beacon: 3871ms ago
                    IE: Unknown: 0000
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 03010D
                    IE: Unknown: 050400010000
                    IE: Unknown: 23021300
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
                    IE: Unknown: 470104
                    IE: Unknown: 2D1AAC0103FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160D080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F20201018E0003A4000027A4000042435E0062322F00

Mit Hilfe dieser Datei kann man das Hintergrundrauschen ermittel und somit auf allfällige Störquellen reagieren.
Hier nun ein Beispiel:

cat /proc/net/wireless
Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
 face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon | 22
wlp3s0: 0000   52.  -58.  -256        0      0      0     45     95        0

Der interessanteste Wert ist noise, je tiefer dieser ist, desto näher ist man der Störquell.
Der andere Wert ist level, dieser gibt die Signalstärke in db aus.