Book Image

BackTrack - Testing Wireless Network Security

By : Kevin Cardwell
Book Image

BackTrack - Testing Wireless Network Security

By: Kevin Cardwell

Overview of this book

Wireless networks are everywhere. You have probably set one up yourself, but have you ever wondered just how safe you are while browsing online? In the majority of cases, the default settings for your networks are not enough to protect you. With your data being transferred over the air, it can be easily plucked and used by anyone who knows how. Don't let it happen to you.BackTrack - Testing Wireless Network Security will help you secure your wireless networks and keep your personal data safe. With this book, you will learn how to configure your hardware for optimum security, find network security holes, and fix them.BackTrack - Testing Wireless Network Security looks at what tools hackers use and shows you how to defend yourself against them. Taking you from no prior knowledge all the way to a fully secure environment, this guide provides useful tips every step of the way. Learn how to select a wireless card to work with the Backtrack tools, run spectrum analysis scans using kismet, set up test networks, and perform attacks against wireless networks. Use the tools aircrack-ng and airodump-ng to crack the wireless encryption used on the network. You will learn everything you need to know to set up your wireless network for use within Backtrack and also how to defend yourself against the included attack tools.
Table of Contents (13 chapters)

Configuring encryption


The challenge we have is that there is no standard, and different access points will provide different methods and names for the settings. The options of the Bountiful router are shown in the following screenshot:

When you look at the previous screenshot, how do you know what it means? Well, this is where you either consult the manual or configure a particular setting and then see what happens. We all know that WEP is not an option, so we can eliminate that right away. The challenge is all of the variants of WPA. What exactly do they mean? The important thing to remember is that the WPA configuration changes from a key that is based on the hexadecimal numbering system to a password or passphrase. This means that, as a user, you have to select a strong password or passphrase. You may recall that we cracked a dictionary word that was used in a WPA configuration. So, one of the first things you want to do is think of a strong password or passphrase to use for your configuration...