[ubuntu][wifi sniffer] How to use wificard to sniffer the packet on the air

Type ifconfig then show ether list.

ifconfig wlan0 down;
iwconfig wlan0 mode monitor;
ifconfig wlan0 up.

If wifi interface show long mac address, then successful.



Open wireshark to monitor the packet wihich on the air.

The packet on the air will appear on the wireshark.

If Machine is on channe 3.
Please type "iwconfig wlan0 channel 3" to switch ether dongle to match machine on channel 3.
Then ether dongle will capture the packet from machine.