Danny Tech Security

The Problem   As you notice when upgrading to Ubuntu 10.04, Ubuntu 10.10, or using the latest BackTrack4. There is an issue with the latest kernel build of 2.6.35-35 which does not allow setting a specific channel and also it will not allow to perform packet injection in the Aircrack-ng suite.  For a solution please read the PDF. Title: Fixed Channel -1 File Name: Fixed Channel -1.pdf File Type: PDF File Size: 1.6 MB Download Now

The new kernel 2.6.35-25 has issues when wireless cards are put into monitor mode. To check the current kernel version on your system use the " uname -r " command and that would display the current kernel. For example if you use airodump-ng it would say " fixed channel mon0: -1 " like seen in the screen-shot below.   This Saturday I will show step by step to solve the " fixed channel mon0: -1 ". Why is this a big issue, this affects other applications that require monitor mode such as Kismet which also means when a user want to do a packet injection the card can't provide that function. On the tutorial for this Friday I will show you how to patch this problem with a Atheros wireless card. The following Linux Distro's have 2.6.35-25 kernel Ubuntu 10.04 Ubuntu 10.10 Backtrack 4 R4 Any other Linux distro that is keep up to date. If your still using previous versions of Ubuntu or BackTrack then this does not affect you, but i