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Thread: RTL8187 Injection problem

  1. #1
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    Default RTL8187 Injection problem

    Hi,

    I have been using backtrack for a while and am testing the latest release, i have a physical install and when i try using injection using the above device it fails, if i switch the same device to the previous version of backtrack it works fine, has something changed or is this a known bug

  2. #2
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    Default Re: RTL8187 Injection problem

    Quote Originally Posted by sataigrey View Post
    Hi,

    I have been using backtrack for a while and am testing the latest release, i have a physical install and when i try using injection using the above device it fails, if i switch the same device to the previous version of backtrack it works fine, has something changed or is this a known bug
    And what have you tried to fix the problem? I have a rtl8187(L) (as listed in my signature) and it works out of the box with BT4 Final. Haven't tried the other (rtl8187b) but it should work either.

  3. #3
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    Default Re: RTL8187 Injection problem

    AWUS036H with rtl8187l works out of the box for me.

  4. #4
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    Default Re: RTL8187 Injection problem

    You can use r8187 module to inject

    rmmod rtl8187
    modprobe r8187
    airmon-ng start wlan0

    airodump-ng wlan0 .........

    for the rtl8187 module

    airmon-ng start wlan0

    write
    iwconfig and you will
    see a card mon0

    then
    airodump-ng mon0......

  5. #5
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    Default Re: RTL8187 Injection problem

    AWUS036H with rtl8187l works with me Im using BT 4 in VMware. Only problem with newist BT4 is that capturing WPA handshake takes a lot more time than in BT4 beta. There might be some updates, which can fix ur problem

  6. #6
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    Default Re: RTL8187 Injection problem

    Quote Originally Posted by dimifak View Post
    You can use r8187 module to inject

    rmmod rtl8187
    modprobe r8187
    airmon-ng start wlan0

    airodump-ng wlan0 .........

    for the rtl8187 module

    airmon-ng start wlan0

    write
    iwconfig and you will
    see a card mon0

    then
    airodump-ng mon0......
    Hello!
    I would like to load the r8187 module 4 but in backtrack your steps to make me say this:
    root @ bt: ~ # rmmod rtl8187
    ERROR: Module rtl8187 does not exist in / proc / modules

    there any way to select the r8187 driver and not the rtl8187

    thanks!

  7. #7
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    Default Re: RTL8187 Injection problem

    you can blacklist the module you want doing this


    echo "blacklist rtl8187" >> /etc/modprobe.d/blacklist

    if you try to unload a module which is not loaded you will receive
    ERROR: Module rtl8187 does not exist in /proc/modules
    i noticed all the days i use bt4f module r8187 works fine with
    open wep and wpa AP
    so no reason to use rtl8187

  8. #8
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    Default Re: RTL8187 Injection problem

    Quote Originally Posted by dimifak View Post
    i noticed all the days i use bt4f module r8187 works fine with open wep and wpa AP so no reason to use rtl8187
    rtl8187 also works fine with WEP and WPA, and it's loaded by default. Why saying that there is no reason to use rtl8187 driver if both drivers have the same performance?

    Plus, rtl8187 uses the mac80211 stack, which is newer than ieee80211 (r8187). Here's an excerpt from aircrack-ng wiki that may help clarify the difference between the two stacks:
    There is a new wireless stack starting in the mainline kernel since 2.6.22 called mac80211. As newer versions of the kernel get released more and more wireless devices are being supported by it. It has the huge advantage of being included in the kernel itself. The mac80211 stack has features such as software MAC (media access controller), hostapd, WEP, WPA, WME, a “link-layer bridging module,” and a QoS (quality of service) implementation. Of specific interest to aircrack-ng is native monitor mode and injection support.
    The legacy drivers use the ieee80211 or net80211 stacks. And quite often there is one stack per wireless device. Depending on the driver, it does not provide native monitor mode or injection support.

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