Check security mode of connected Wi-Fi network

I got it! :)

sudo wpa_cli status

command gives me information exactly that I want.

Selected interface 'wlan0'
bssid=80:1f:72:95:d2:b2
ssid=whatever
id=0
mode=station
pairwise_cipher=CCMP
group_cipher=TKIP
key_mgmt=WPA2-PSK
wpa_state=COMPLETED
ip_address=192.25.27.111
address=a4:4f:31:15:5f:44
uuid=6099d6ff-4b7d-538a-9e69-3479e250e401

Output of that command is easy to grep.

You can try below command from CLI to list SSIDs.

sudo iwlist wlan0 scan

Or you can also use

nmcli -f all dev wifi | grep SSID | awk '{ print $1 " - " $9 }'

nmcli -f all dev wifi | awk '/SSID/{ print $1 " - " $9}'

replace SSID with ssid you need information for.

Please open a terminal and run:

sudo iwlist wlan0 scan

Your network will appear, along with others in range, similar to this example:

Cell 04 - Address: xx:C1:50:78:B7:xx
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=30/70  Signal level=-80 dBm  
                    Encryption key:on
                    ESSID:"ATT630"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000021823cba79
                    Extra: Last beacon: 4340ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK

                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK

So we see that the encryption is WPA and WPA2 mixed mode with TKIP.

Check security mode of connected Wi-Fi network

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