Obviously, I work for AirDefense but since my company was mentioned, I thought I could add value here. We can in fact determine authorized users from unauthorized users via a number of mechanisms, IP address, MAC address, naming, LEAP name etc. We also can do some triangulation, although it gets tricky in RF. Via our correlation engine we can pin point direction and signal strength and via stateful inspection do this on a minute by minute basis for tracking users who are roaming.
We did also build a specific sensor that can disassociate a session and prevent the connection. We do not sell this into the commercial market because of legal issues. There are a number of proactive measures that you can do today, however, to prevent connectivity or unauthorized users. Reconnaissance activity varies in form and some sniffers and other devices can not be detected - others can be detected and identified. If you need more information, please do not hesitate to contact me. Candace Stone Regional Manager (310) 372-9313 (310) 748-3008 (Cell) [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Colee Sent: Friday, August 01, 2003 6:01 AM To: [EMAIL PROTECTED] Subject: Re: [SOCALWUG] Location determination and jamming! Air Defense says that their distributed monitoring system will, with the proper map input for the area, be able to tell you the location of a specific AP or client. I have not see it demonstrated, yet, though. Your problem goes beyond simple triangulation of a signal - I expect that you'll want to do this during normal activity times, when you will likely have several (at a minimum) legitimate users working. With simple signal source triangulation, you listen to the signal strength and direction from several known locations and plot the location of the target on a map. But, during normal usage time, you have to sort out the specific user that you want to locate from the signals of all the other users that you are not concerned about - not as easy of a task as it might seem. For an idea of a jammer, see the Phrack article about building your own GPS jammer - it should get you started. Remember, however, that jamming may not be legal, and is certainly a double-edged sword - both for unwanted and unintended interference that can be caused in areas that you don't want it in and for unintentional lack-of-coverage areas that may escape you. Good luck, David >>> [EMAIL PROTECTED] 08/01/03 02:04AM >>> hi folks, i have an interesting problem to solve.... i am studying in univ and my dept has it's own block in the univ. the area is roughly around 300 sq mts. u ppl know of any techniques to determine the location of the mobile user... maybe accurately to about which room/lab the mobile user is in using ad-hoc technique. i am wondering if such a thing is possible in first place. some sort of research (Eg RADAR technique) is done to find an avg soln to the above problem; but those are for non-adhoc types (i.e with the help of access points and signal strengths)... any help in this direction would be greatly appreciated.... and one more thing is to do with the security issues..... let me give u an example... suppose we do not want anyone to snoop our signal just outside our premises here in IBM, we were planning to do a bit of research in building a JAMMER. yes, u heard it right... a jammer to jam RF signals outside our premises. I am aware of such jammers for GSM phones; but not for WiFi. What would be a possible technology (in terms of PHY) to use to build such a jammer. Please let me know if you people have any pointers for this. thanks in advance, kiran Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com Buy The Best In BOOKS at http://www.bestsellers.indiatimes.com Bid for Air Tickets on Air Sahara Flights at Prices Lower Than Before. Just log on to http://airsahara.indiatimes.com and Bid Now !
BEGIN:VCARD VERSION:2.1 N:Stone;Candace FN:Candace Stone ([EMAIL PROTECTED]) ORG:AirDefense TITLE:Regional Manager TEL;WORK;VOICE:(310) 372-9313 TEL;CELL;VOICE:(310) 748-3008 ADR;WORK:;;55 15th Street;Hermosa Beach;CA;90254;United States of America LABEL;WORK;ENCODING=QUOTED-PRINTABLE:55 15th Street=0D=0AHermosa Beach, CA 90254=0D=0AUnited States of America EMAIL;PREF;INTERNET:[EMAIL PROTECTED] REV:20020806T002348Z END:VCARD
