BCM4331 deauthenticates every five minutes

[Arend van Spriel]

On 06/20/2013 10:33 AM, Arend van Spriel wrote:
> On 06/19/2013 11:11 PM, Chris Adams wrote:
>> Once upon a time, Arend van Spriel <arend at broadcom.com> said:
>>> Can you make a capture using a wireless sniffer (using your thinkpad
>>> maybe)?
>>
>> How would I go about doing that?  I've done lots of network debugging
>> with tcpdump and such, but not much wireless stuff.
>>
>
> I use wireshark these days. If you install that you can use the steps
> below and select the wireless interface in wireshark to capture. I use
> wlan0 as interface name, but it may be different for you.
>
> 1. disable network-manager so it won't interfere.
> 2. bring the interface down
> $ sudo ifconfig wlan0 down
> 3. change interface type to monitor
> $ sudo iw dev wlan0 set type monitor
> 4. bring up the interface
> $ sudo ifconfig wlan0 up
> 5. start wireshark and select wlan0
> $ gksudo wireshark
>
> It will complain that running wireshark as root is not secure. If you
> care about that, you should read [1].

Forgot a step. You need to select a channel. You can do that before 
starting a capture in wireshark: $ sudo iw dev wlan0 set channel 5

> Regards,
> Arend
>
> [1]
> http://wiki.wireshark.org/Security#Administrator.2Froot_account_not_required.21
>
>
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