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Subject: Re: [CRAWDAD-USERS] wifi_parser

You might also want to look at the wireshark wiki: <http://wiki.wireshark.org/CaptureSetup/WLAN>

Cheers, Tristan

At 08:40 on 07 Nov 2007, John Otto said: Hi Daniel,

 I don't think you should expect to capture the beacon frames from an
 interface in managed mode. You're on the right track with using an
 interface in monitor mode. It sounds like you have created the
 interface correctly. This is what I use to create my monitor interface
 "mon0" for my Atheros card with hardware device "wifi0":
 `wlanconfig mon0 create wlandev wifi0 wlanmode monitor`

 The next step is to bring up the network interface:
 `ifconfig mon0 up`

 This should solve your "network is down" error message.
 Regards,
 John Otto

 On Nov 7, 2007 7:24 AM, Daniel Gonzalez Sanchez
 <dgonzalezsanchez@cedetel.es> wrote:

Hi everybody,

 i found http://crawdad.cs.dartmouth.edu/ a week ago and i think is very very
 interesting for everybody who are working with wireless networks.
 We are from a university of Spain and we are researching about location
 methods using the signal of the wifi networks. We want to use the RSSI.
 We found your tool "wifi_parser", and when we probe the program we capture
 packets but all this packets are Management frames of Association Request,
 i.e. the frames our station sends, and a few unknown frames. So we think we
 aren't capturing the signals ( for  example the beacon frames) that are
 being sending by the APs. These AP?s are from a university network.
 First we use for this purpose a wireless card ipw3945 in Managed mode but we
 only capture that frames.
 After we probe a dwlg -650 in mode Managed and again we only capture
 Asocciation Request and uniknown. Later we probe with this card in monitor
 mode but the program no works because it said the "network is down"
 Does anybody what is the problem because we dont capture the rest of the
 frames?

 We are working on Ubuntu 7.10 and  the wireless card work well, so we can
 conect to the APs and access to the Internet.
 Thank you for your attention
 Cheers

 Daniel Gonzalez