Re: [gentoo-user] Re: wlan0 promiscuous mode

[Saphirus Sage]

Dominic Kexel wrote:
> On Wed, 28 Jan 2009 21:23:12 -0800
> Grant <emailgrant@×××××.com> wrote:
>
>
>>>>> Does anyone know how to put my USB wireless network adapter into
>>>>> promiscuous mode so I can see everything that's happening wirelessley
>>>>> on my network in wireshark?
>>>>>
>>>> ifconfig eth1 promisc
>>>>
>>>> But at least tcpdump puts the interface into promiscous mode
>>>> automatically, so there is a chance that wireshark does the same.
>>>>
>>>>
>>>>
>>> Another way is to use airmon-ng from the aircrack-ng package:
>>>
>>> airmon-ng start wlan0
>>>
>> I can't get that to work.  I get:
>>
>> # airmon-ng start wlan0
>> Interface	Chipset		Driver
>> wlan3			ath5k_pci - [phy0]
>> wlan0		Ralink 2573 USB	rt73usb - [phy1]/usr/sbin/airmon-ng: line 338:
>> /sys/class/ieee80211/phy1/add_iface: No such file or directory
>> mon0: ERROR while getting interface flags: No such device
>> (monitor mode enabled on mon0)
>>
>> It looks like I'm supposed to have /sys/class/ieee80211/phy1/add_iface
>> which isn't there.  I've tried with net.wlan0 started and stopped.
>>
>> - Grant
>>
>
> Your driver has to support monitor-mode.
> I am using an Atheros-based internal WiFi-card and an Alpha-USB-WiFi-device
> with Realtek-Chip. The drivers I used a while ago needed a patch to work with
> monitor-mode, but the recent drivers don't. Take a look at the driver-section
> on the aircrack-ng homepage. Maybe your driver needs to be patched.
>
>
>
I'm using the same chipset with the same driver (ath5_pci with phy0),
and my card can go into monitor mode. I'm wondering if you are using the
driver compiled into the kernel or madwifi-ng drivers.