Use airodump-ng and Horst to analyze the live WiFi traffic:
#iwconfig #check the wireless card
#ip link set wlan0 down
#iw dev wlan0 set monitor mode
#ip link set wlan0 up
#iw dev wlan0 set channel 10
#aireplay-ng --test wlan0 #testing the device on channel 10
airodump-ng wlan0
#figure out BSSID, SID, connected stations, etc.
airodump-ng --band abg wlan0
#figure out BSSID, SID, connected stations, etc on all bands (default only 2.4).
airodump-ng --channel 3 wlan0
#sniffing on channel 3
airodump-ng --channel 3 --essid WHATSOVER wlan0
#sniffing on channel 3 filtering by essid
airodump-ng --channel 3 --encrypt WPA1 wlan0
#sniffing on channel 3 only for encryption WPA1
Home of the WiFi tools: