Problems with Wifi-link 5100 AGN

[Fragant]

I have a laptop PC Probook 4410s model, with a wireless network card intel (R) wifi link 5100 agn, connected to a Networks Wireless 802.11b / g wireless Router With, with the Windows operating system reload, connect to some distance from it when you have a distance no more than 30 meters, disconnects, it is not if the router or wireless card. The router is configured as follows:

Network Name: Default_11G
802.11g band
Network Operation Mode (infrastructural)
Open Authentication Level
Data Encryption: No

I had to remove the password because I was not connected or 1 meter, and this added to the profiles of the network to connect automatically and fixed IP. It would be better for me if you tell how to Crack WPA in Backtrack 2. Please help as soon as possible.

[BlackNGold]

I think that you should try to update your drivers for the Wifi-link 5100 AGN. First, choose your version of BackTrack 2 here. I suggest downloading two modified versions of Backtrack 2 updates. Once you downloaded and burned live CD, boot your computer on Backtrack 2. Arriving at the login screen, the login is root and the password is toor. Enter the command startx to start the GUI.

[Sanith]

The following are some tips on the shell:

• To get to a folder, type cd / . For example, if you have a fat32 partition recognized as hda3, type cd/mnt/hda3 to go in that partition. The capture files are then stored on your fat32 partition, which will get them back later, including Windows.
• Pass the mouse pointer on the shell, and right click, show menubar. You can find options to open multiple shells side by side, change the font size etc ...

[Kerwin]

Here, the wifi interface (characterized by the 802.11b / g) is recognized as wlan0. For the switch to monitor mode to listen to wireless networks, type the command airmon-ng start followed by the name of the wifi interface. In this case:-ng start wlan0 airmon

The return of console indicating "monitor mode enabled" indicates that your wireless card has just passed in monitor mode.

[Otto]

Airodump-ng can listen to wireless networks and to save the packets in a capture file. The controls are fairly simple:

• usage: airodump-ng <options> <interface> [, ,...] <interface>
• A quick test: airodump-ng - encrypt wlan0 wpa
• To stop airodump, press ctrl + c in the shell. Here, airodump-ng has listened to all the channels, and has posted the access points using WPA encryption without writing capture file.

List of filters airodump-ng:

• Encrypt can target as the encryption of networks, eg: - encrypt wpa target only to WPA encrypted networks
• W specifies the name of the capture file to be created ex: w-out
• Bssid can target listening on a single point of access eg - bssid 00: AA: 11: BB: 22: CC: 33

[Pikachoo]

A method of crack (passive method) is to target an access point, network and listen for hours until a client connects. Indeed, the 4-way handshake is a set of packets transmitted by the access point and the station when it connects. Upon connection, if your reception is good (the quality of the radio signal is visible in the column "rxq" if it exceeds 50 it is of good quality), the handshake is captured. Another method is to use aireplay-ng attack and -0 to force the client to disconnect and capture the handshake when he reconnects (the wireless network manager for Windows is set by default to automatically reconnect to a access point in case of disconnection, the attack exploits this vulnerability -0).

[BlackNGold]

Plan your attack aireplay-ng. Click in session, new shell and open two new shells. In the first, prepare the command aireplay-ng -0 0-a bssid-c station interface. In the second, prepare the command aireplay-ng -0 0-a bssid interface. The parameter indicates an attack -0, 0 means that after sending packets will be infinite, and then it will stop the attack after a few moments with ctrl + v. You can specify a delay, for example aireplay-ng -0 5, and the attack stops after sending five packet. When orders are ready, run them into each shell, wait a few seconds and stop them.

[Big Fish]

The handshake is now in the capture file, you can stop airodump. You now need to arm yourself with a good dictionary file and copy the file or is the capture file. As you can see, I copied the dictionary file in the folder named 8.txt root. The file is out-01.cap the capture file containing the handshake, and out-01.txt file is a file created by airodump-ng containing information about the capture file. The crack starts, aircrack-ng will test all the passwords contained in the dictionary file. The speed of the crack, shown in top keys / second depends on the computing power of your CPU.