WEP is an encryption scheme, based on RC-4 cipher, which is available on all 802.11a, b and g wireless products. WEP uses a set of bits called a key to scramble information in the data frames as it leaves the access point or client adapter and the scrambled message and then decrypted by the recipient. Both sides must have the same WEP key, which usually total 64 or 128 bits long. A number of semi-random 24 bit is called the Initialization Vector (IV), is part of the key, so that 64 bit WEP key actually contains only 40 bits of the \ "strong \" encryption while a 128 bit key 104. IV is placed in encrypted frame \ 'header, and transmitted in plain text.

Traditionally, cracking WEP keys has been a slow and tedious process. The attacker must capture hundreds of thousands or millions of packets? a process that could take hours or even days, depending on the volume of traffic passing through the wireless network. After enough packets were captured, a WEP cracking program such as Aircrack would be used to find the WEP key.
Basic Directions:
1). Boot from cd
2). Getting the WEP key
3). Write
4). Reboot to windows
5). Connect using the WEP key

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