Hello Everybody...i'm completely new to linux, i was tryin to use Backtrack 4 on my Toshiba Satellite A665 laptop device using its built in wireless network card, but the problem is that when i enter the command "airmon-ng start wlan0" to start the monitor mode it says "Intel 4965/5xxx iwlagn - [phy0]SIOCSIFFLAGS: No such file or directory"
"monitor mode enabled on mon0"
and when typing the command "airodump-ng mon0" it also says no such file or directory....
plz help..what is the problem there?
NB: wireless card is Intel Centrino Advanced-N 6250 AGN

Here's a few links to sites that I found on GOOGLE, Each of these links is to a wifi problem on a Toshiba Satellite:

(By the way is your card a Realtek RTL8191SE? I've seen a few threads on some forums about this card)

• WIFI solved on a toshiba L675
  Ubuntu forums/ toshiba a505<< This has a whole slew of commands to learn (may be informative)
  This is about REALTEK RTL8191SE

The OP said they were using an Intel card.

KEVIN24, perhaps you're just missing the firmware for your device. What does "dmesg | grep iwlagn" say?

Hi Kevin,

At first I thought you can go with downloading the driver and then doing modprobe driver_name (driver that need to be installed) then I realized you are working Backtrack 4 and am not sure if modprobe will work on that. And yes there is one more important thing that you shouldn't miss which is your kernel support for WiFi.

You have to check whether your kernel is configured for WiFi or not.

Have a look at the following link and you will understand what I am talking about: http://www.aircrack-ng.org/doku.php?id=iwlagn

First check which kernel you are using by typing uname -a. Also check which architecture it is whether i386 or x86_64

Once done with the above step navigate to boot directory and see if you find any config files which says something like config-kernel_version (kernel_version will be output of uname -a)

Type the following command to read that file and see if it says something about WiFi under networking section:

less config-kernel_version

Lets see how it goes. I have never worked on Backtrack 4 :-( but it worth giving a try to find out some information about kernel configuration related to WiFi.

If you're completely new to Linux, how about a more friendly distro like Ubuntu or Mint. Backtrack is about the least newbie-friendly distro out there.

Backtrack 4 is based on Ubuntu, it should work. Thinking about that, I never saw a distro with module loading disabled in the kernel by default.

Backtrack is a distro that is specialized towards security and penetration testing. A penetration testing distribution without support for wireless networking would be rather pointless.

1 members found this post helpful.

Yup you are right just checked modprobe on my Linux Mint and it works. Yup standard kernel never by default disable module loading. Sorry I think I was on a different track when I said that. What I mean was is to enable that option incase planning to create a custom kernel.

Yup checked on their website again and found which I missed last time. :-)

tnx for ur replies all...this is what dmesg | grep iwlagn says:
iwlagn: Intel(R) Wireless WifI link AGN driver for linux, 1.3.27kd
uwlagn: Copyright(c) 2003-2009 Intel Corporation
iwlagn 0000:06:00.0: PCI INT A -> GSI 17 (level,low) -> IRQ 17
iwlagn 0000:06:00.0: setting latency timer to 64
iwlagn 0000:06:00.0: Detected Intel wireless wifi link 6050 Series 2x2 AGN REV=0x84
iwlagn 0000:06:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
iwlagn 0000:06:00.0: irq 36 for MSI/MSI-X

Any ideas?

Unfortunately, I don't have any ideas about this, since iwlagn isn't complaining about missing firmware. Hopefully someone else can help.