At the time of writing a suitable Madwifi driver and patch for the eeePC’s built in wireless card had been released but then withdrawn, but it’s likely that an “official” one will be available very soon.

In order carry out attacks on wireless networks efficiently you’ll almost certainly need to patch your wireless drivers to support packet injection – patches and details of how to do this can be found at. On any other device you can check you can find it at. On an eeePC running Ubuntu you can do this via Synaptic.

Build a Portable Security Tool with the ASUS Eee PC and Ubuntuīefore you can start you’ll need to download and install Aircrack-ng.

You can use Aircrack-ng with any wireless laptop, but make sure to catch our previous articles on building a dedicated network security machine with the ultra-portable eeePC and Ubuntu Linux: If any networks uses WEP encryption, it will usually find the relevant WEP key in under a couple of minutes, demonstrating that WEP is totally ineffective. This open source suite of applications can help you locate all the access points in your offices, check that the networks are protected by encryption, and test the strength of the keys or passphrases that are in use.

If you’re not using WPA-Enterprise or WPA-Enterprise (both of which use a RADIUS server) in your organization, then any wireless networks you are running using WEP, WPA or WPA2 are also at risk. It’s quite possible that the wireless signal is leaking out into the street, and anyone passing by could get access to your network – even if they are using WEP, WPA or WPA2 encryption.īut it’s not just rogue APs that are a worry. Rogue access points and weak passwords are the bane of any network administrator’s life: all it takes is one user setting up a consumer-grade wireless router in the cube farm so he or she can use a PDA or whatever and you’ve got yourself a potentially serious security risk.

How to use aircrack as a scanner