How to Crack a Wi-Fi Network’s WEP Password with BackTrack
You already know that if you want to lock down your Wi-Fi network, you should
opt for WPA encryption because WEP is easy to crack. But did you know how easy? Take a look.
Note:
This post demonstrates how to crack WEP passwords, an older and less
often used network security protocol. If the network you want to crack
is using the more popular WPA encryption, see our guide to cracking a Wi-Fi network's WPA password with Reaver instead.
Today
we're going to run down, step-by-step, how to crack a Wi-Fi network
with WEP security turned on. But first, a word: Knowledge is power, but
power doesn't mean you should be a jerk, or do anything illegal. Knowing
how to pick a lock doesn't make you a thief. Consider this post educational, or a proof-of-concept intellectual exercise.
Dozens
of tutorials on how to crack WEP are already all over the internet
using this method. Seriously—Google it. This ain't what you'd call
"news." But what is surprising is that someone like me, with minimal
networking experience, can get this done with free software and a cheap
Wi-Fi adapter. Here's how it goes.