Scanning
You can use different tools to scan the Wi-Fi network:
To scan with the nmcli tool:
# nmcli dev wifi rescan
# nmcli dev wifi list
* SSID MODE CHAN RATE SIGNAL BARS SECURITY
ap-wlan1-wpa2aes_a Infra 36 54 Mbit/s 69 *** WPA2
Buffalo_AG300H_5_N Infra 36 63 Mbit/s 60 *** WPA2
-- Infra 132 54 Mbit/s 50 ** WPA1 802.1X
LINKSYSENG Infra 11 54 Mbit/s 60 *** WPA2
Connect Infra 11 54 Mbit/s 57 *** WPA2
RoamingNetwork Infra 9 54 Mbit/s 49 ** WPA2
DAP-GUEST Infra 11 54 Mbit/s 49 ** WPA1
-- Infra 11 54 Mbit/s 49 ** WPA2 802.1X
TP-LINK_26B9 Infra 1 54 Mbit/s 45 ** WPA2 802.1X
DAP-GUEST Infra 1 54 Mbit/s 45 ** WPA1
NETGEAR_WPA2AES Infra 11 54 Mbit/s 42 ** WPA2
-- Infra 1 54 Mbit/s 42 ** WPA1 802.1X
Orange-f702 Infra 6 54 Mbit/s 35 ** WPA1 WPA2
_AUTO_ONOWiFi Infra 1 54 Mbit/s 24 * WPA1 WPA2 802.1X
Cisco_2600_WEP128_HEX4 Infra 5 54 Mbit/s 87 **** WEP
Cisco_2600_WEP128_HEX4 Infra 2 54 Mbit/s 79 *** WEP
-- Infra 1 54 Mbit/s 47 ** WEP
Silicon Labs Thread 1F8A Infra 6 54 Mbit/s 20 * --
* Cisco_1200G_EAP_PEAP Infra 6 54 Mbit/s 61 *** WPA2 802.1X
Buffalo_AG300H_24_N Infra 6 63 Mbit/s 62 *** WPA2 802.1X
-- Infra 52 54 Mbit/s 57 *** WPA1 802.1X
cisco_hb_aes Infra 6 54 Mbit/s 34 ** WPA1 WPA2
Nebraska Infra 6 54 Mbit/s 29 * WPA2
MOVISTAR_0F50 Infra 6 54 Mbit/s 19 * WPA2
ONO0D9C Infra 9 54 Mbit/s 17 * WPA2
SARES_Cisco_1200 Infra 6 54 Mbit/s 15 * WPA2
-- Infra 11 54 Mbit/s 50 ** WEP
_ONOWiFi Infra 9 54 Mbit/s 20 * --
* SSID MODE CHAN RATE SIGNAL BARS SECURITYTo scan with the iw tool:
# iw dev wlan0 scan
BSS 84:b5:17:40:a7:c0(on wlan0) -- associated
TSF: 546312162668 usec (6d, 07:45:12)
freq: 5180
beacon interval: 102 TUs
capability: ESS Privacy SpectrumMgmt (0x0111)
signal: -11.00 dBm
last seen: 0 ms ago
Information elements from Probe Response frame:
SSID: Cisco_2600_WPA2_AES
Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0
HT capabilities:
Capabilities: 0x19ee
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT RX MCS rate indexes supported: 0-23
HT TX MCS rate indexes are undefined
RSN: * Version: 1
* Group cipher: CCMP
* Pairwise ciphers: CCMP
* Authentication suites: PSK
* Capabilities: 16-PTKSA-RC 16-GTKSA-RC (0x003c)
HT operation:
* primary channel: 36
* secondary channel offset: no secondary
* STA channel width: 20 MHz
* RIFS: 1
* HT protection: no
* non-GF present: 1
* OBSS non-GF present: 0
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
WMM: * Parameter version 1
* u-APSD
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: CW 3-7, AIFSN 2, TXOP 1504 usec
BSS 6c:99:89:76:43:9f(on wlan0)
(truncated)To scan with the wpa_cli tool:
# wpa_cli -iwlan0 scan
# wpa_cli -iwlan0 scan_results
bssid / frequency / signal level / flags / ssid
84:b5:17:40:a7:c0 5180 -11 [WPA2-PSK-CCMP][ESS] Cisco_2600_WPA2_AES
84:b5:17:40:a7:c0 5180 -11 [WPA2-PSK-CCMP][ESS] \x00
6c:99:89:76:43:92 2462 -70 [WPA-PSK-CCMP+TKIP][ESS] DAP-GUEST
58:6d:8f:ea:0e:7a 2462 -71 [WPA2-PSK-CCMP][WPS][ESS] LINKSYSENG
d8:eb:97:ab:11:20 5240 -81 [WPA2-PSK-CCMP][ESS] RoamingNetwork_A
6c:99:89:76:43:90 2462 -75 [WPA2-EAP-CCMP][ESS] \x00
68:7f:74:17:cc:c4 2437 -75 [WPA2-PSK-CCMP][ESS] WRT610N
6c:99:89:76:43:9f 5260 -82 [WPA2-EAP-CCMP][ESS] \x00
6c:99:89:76:43:9e 5260 -82 [WPA-EAP-TKIP][ESS] \x00
a4:2b:b0:de:26:b9 2437 -82 [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS] TP-LINK_26B9
e0:0e:da:38:c1:cf 5320 -91 [WPA2-EAP-CCMP][ESS] \x00
6c:99:89:76:43:93 2462 -70 [WEP][ESS] \x00
e0:0e:da:38:c1:c3 2412 -78 [WEP][ESS] \x00
ec:e1:a9:9a:66:50 5580 -83 [ESS] cisco_me_open_5g
00:90:4c:91:00:01 2462 -84 [ESS] ConnectConnect
You can use NetworkManager to connect to a Wi-Fi network.
Run nmcli with parameter -a to be prompted for any missing parameters, like Wi-Fi password:
# nmcli dev wifi connect TP-LINK_2A39_5G -a
Password:
Device 'wlan0' successfully activated with '26130be0-7ac4-49f7-a97e-bf68ef8c443b'.Link status
You can use different tools to get information about the status of the Wi-Fi interfaces:
To get the status of all devices managed by NetworkManager, use the nmcli tool:
# nmcli dev status
DEVICE TYPE STATE CONNECTION
eth1 ethernet connected eth1
wlan0 wifi connected wlan0
eth0 ethernet unavailable --
can0 can unmanaged --
lo loopback unmanaged --
sit0 sit unmanaged --
wlan1 wifi unmanaged --To get the status with the iw tool:
# iw dev wlan0 link
Connected to 84:b5:17:40:a7:c0 (on wlan0)
SSID: Cisco_2600_WPA2_AES
freq: 5180
RX: 14188 bytes (110 packets)
signal: -11 dBm
tx bitrate: 72.2 MBit/s MCS 7 short GITo get the status with the wpa_cli tool:
# wpa_cli -iwlan0 status
bssid=84:b5:17:40:a7:c0
freq=5180
ssid=Cisco_2600_WPA2_AES
id=0
mode=station
pairwise_cipher=CCMP
group_cipher=CCMP
key_mgmt=WPA2-PSK
wpa_state=COMPLETED
ip_address=192.168.43.30
p2p_device_address=00:40:9d:98:a6:84
address=00:40:9d:98:a6:84
uuid=883ffae7-742b-59c4-9422-ab29a4b2ab6aLink capabilities
Use the following command to get a list of Wi-Fi link capabilities:
# iw list
