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Thread: Aircrack-ng and RT2500 Problem

  1. #1
    Join Date
    Mar 2007
    Ubuntu 9.10 Karmic Koala

    Aircrack-ng and RT2500 Problem

    Hi I am trying to crack a WEP enabled server as part of a project for an electrical engineering course.

    I am trying to use the aircrack-ng suite, however I am having a problem with my ralink card:

    devin@devin-laptop:~$ sudo airmon-ng start wlan0 6
    Interface	Chipset		Driver
    wlan0		Ralink 2500 PCI	rt2500pci - [phy0]/usr/sbin/airmon-ng: 833: cannot create /sys/class/ieee80211/phy0/add_iface: Directory nonexistent
    Error for wireless request "Set Mode" (8B06) :
        SET failed on device mon0 ; No such device.
    mon0: ERROR while getting interface flags: No such device
    				(monitor mode enabled on mon0)
    devin@devin-laptop:~$ sudo airmon-ng check
    Found 7 processes that could cause trouble.
    If airodump-ng, aireplay-ng or airtun-ng stops working after
    a short period of time, you may want to kill (some of) them!
    PID	Name
    4831	NetworkManager
    4845	NetworkManagerD
    4878	avahi-daemon
    4879	avahi-daemon
    4993	dhcdbd
    5721	wpa_supplicant
    5749	dhclient
    Process with PID 5749 (dhclient) is running on interface wlan0
    devin@devin-laptop:~$ ifconfig
    wlan0     Link encap:Ethernet  HWaddr 00:13:d3:75:d8:62  
              inet addr:  Bcast:  Mask:
              inet6 addr: fe80::213:d3ff:fe75:d862/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:4184 errors:0 dropped:0 overruns:0 frame:0
              TX packets:2233 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:2538252 (2.4 MB)  TX bytes:349931 (341.7 KB)
    Note: I cut out my other interfaces.

    I've looked around and found that some places call for new drivers, but I haven't been able to figure what driver I need to use exactly. However, I think I just need to disaable some of those processses in the second command I've shown. If it's that simple... how do I disable(not remove) those processes.

    I would really appreciate any help.

  2. #2
    Join Date
    Mar 2007
    Ubuntu 9.10 Karmic Koala

    Re: Aircrack-ng and RT2500 Problem

    I seemed to have found the problem and the solution here.... but I have different questions now.

    1) How do I find out what driver I am using now?
    2) How can I switch between these drivers?

    Thanks again


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