How to Use Reaver to crack WPA passwords of Wi-Fi networks

Wi-Fi networks allow us to access the Internet conveniently, but at the same time, we do not want the hacker next door to visit our network, so we naturally need to add a password for WiFi, right? The good news is that you may have read another article about "How to easily crack the WEP password", so you have used a more robust WPA security protocol.

But the bad news is that there is a new Free and Open Source Tool, Reaver, which has discovered a vulnerability in a wireless router, which can crack the passwords on most routers. Today, I will introduce how to use Reaver to crack the WPA/WPA2 password. At last, I will provide corresponding preventive measures.

The first part of the article is detailed steps for cracking WPA using Reaver. Readers can watch videos or follow the text below. Then I will explain how Reaver works. Finally, we will introduce how to prevent Reaver attacks.

Http://www.youtube.com/embed/z1c1OIMbmb0? Wmode = transparent & rel = 0 & autohide = 1 & showinfo = 0 & enablejsapi = 1

Before the formal start, I would like to put it bluntly: Knowledge is power, but power does not mean that we can do whatever we want and violate the law. Likewise, a white horse is not necessarily a prince, and it is not necessarily a thief to unlock it. This article is only about the experiment and verification of some technologies and is only applicable to learning. The more you know, the better you can protect yourself.

Preparations

First, you don't need to become a network expert and learn to use complex command line tools. You just need to prepare a blank DVD, a computer that can connect to WiFi, and free up a few hours, this is what we need. There are many ways to install Reaver, but here we recommend that you follow the instructions below:

• The BackTrack 5 Live DVD. BackTrack is a Linux release that supports Automatic startup. It integrates a large number of network testing tools. Although this is not a required condition for installing and configuring Reaver, It is the simplest method for most users. Download the Live DVD from the BackTrack download page (portal) and then dial it. Here, you can also download the image and install it using VMware. If you don't know what VMware is and what it is, you can use a dial ., When downloading, select BackTrack 5 R3, Gnome environment, and 32 or 64-bit System Based on your CPU (if you are not sure whether it is 32 or 64 here, for the sake of security, select 32-bit), select ISO for the download type, and then click Download.

• A computer with a DVD drive and WiFi support is provided. BackTrack supports most laptop wireless NICs, which should be no problem for most readers. At the same time, your computer needs a DVD drive to start from the BackTrack disc. My test environment is a MacBook Pro that has been in use for six years.

• WPA-encrypted Wi-Fi networks are nearby. No Wi-Fi network. Who are you going to crack. = ...... I will introduce how WiFi protection settings Generate Security Vulnerabilities and how WPA attacks are possible in the "Reaver Working Principles" section.

• Finally, you need a little patience. This is the last step in the experiment. It is not difficult to use Reaver to crack WPA passwords. It uses brute-force cracking. Therefore, your computer will test a large number of different combinations of passwords, to crack the router until the correct password is found. During my test, Reaver spent about two and a half hours cracking my Wi-Fi password. The Reaver homepage is generally about four to ten hours, depending on the actual situation.

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