The basic usage is airmon-ng, where indicates if you wish to start or stop the interface specifies the interface name optionally sets the card to a specific channel.
You can also specify the channel for the monitor mode via this tool. Monitor mode puts the wireless interface into promiscuous state, to enable it to sniff all the Wi-Fi data within range. It is frequently used in combination with other tools. This tool is very basic, and is used primarily for enabling or disabling the monitor mode on a wireless interface. Injection/replay of Wi-Fi packets into the airspace.Įxploitation of weaknesses present in various Wi-Fi clients, to establish fake connections with such clients, in order to launch man-in-the-middle type of attacks. There are many popular wireless sniffing and key sniffing tools available for linux like Air Snort,Air Crack,Wire Shark,etc.I am using Air Crack.Īircrack-ng is basically a suite of tools that are crafted to achieve the following major objectives:Ĭapturing raw Wi-Fi packets in an intended airspace, on various channels of interest, and then analysing the captured packets to show various Wi-Fi networks and Wi-Fi clients that were operating during the collection time period.īreaking WEP and WPA PSK (pre-shared key)-type Wi-Fi networks by exploiting the known vulnerabilities of such networks.
#How to use aircrack to crack wpa how to
We will now see how to sniff a wireless network with WEP security and use the sniffed packets to crack the password.
#How to use aircrack to crack wpa cracked
This is not a flaw in WPA, but in the network manager who sets the weak password.WPA takes long time to get cracked because normally it uses dictionary attacks to crack WPA. I would like to make one point clear here- one can crack WPA passwords if they are too simple. So, WPA generates a unique key for each client and access point link.Morever, the pre-shared key is very rarely used, making it difficult for sniffers to crack the key. WPA, on the other hand, uses a pre-shared key to derive temporary key, using which all the traffic is encrypted. This is not practical for large installs. Second, one has to manually update all the client machines when a WEP key is changed on the network. It uses the same key to encrypt all the data.This means a large number of packet transfers with the same key, which makes cracking easy. The difference in WEP and WPA is that WEP applies a static method to use pre-shared keys for encryption.