Here is another very nice article, with a few links / software tools. http://www.forensicswiki.org/wiki/NAT_detection
Faisal Imtiaz Computer Office Solutions Inc. /SnappyDSL.net Ph: (305) 663-5518 x 232 -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Faisal Imtiaz Sent: Friday, August 21, 2009 8:50 PM To: 'WISPA General List' Subject: Re: [WISPA] Apartment Buildings For the Uber Geeks... http://www.sflow.org/detectNAT/ Faisal Imtiaz -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Mike Hammett Sent: Friday, August 21, 2009 8:41 PM To: WISPA General List Subject: Re: [WISPA] Apartment Buildings I believe you can also tell by the timestamps in the packets. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: "ralph" <ralphli...@bsrg.org> Sent: Friday, August 21, 2009 5:38 PM To: "'WISPA General List'" <wireless@wispa.org> Subject: Re: [WISPA] Apartment Buildings > I think it was Earthlink that did have a technology by which they > could see the different MACs behind a router. I wish I could remember > how they said it worked. They did tell me that at the time, they were > not worrying about how many computers were behind your NAT. > > Ralph > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On Behalf Of Eje Gustafsson > Sent: Friday, August 21, 2009 3:24 PM > To: 'WISPA General List' > Subject: Re: [WISPA] Apartment Buildings > > Not seen a single solution that can do that. That is the functionality > of NAT to hide what is behind it. I take advantage of it all the time > when I'm staying in hotels. Use my own AP that allows my wifi enabled > devices access and connect to the hotels system and I'm paying a > single fee for the hotel that charges for internet. > > Only way to "fight" it in a MTU type environment or even with > residential is educate the users and strike some fear into them that > if they run open APs they could get in trouble if the others that > piggy back on it does illegal things such as copyrighted filesharing, > illegal p0rn or simply are virus infected and they this way risk > getting infected and have their own computers compromised and become > BOT slaves. > > Plus also let them know that they are paying for specific service > speeds and if they let others use it a lot for free then themselves no > longer have the speed for themselves and also possible point to the > bit cap portion of the user agreement letting them know that their > account could possibly be shut down prematurely because someone else > is using up all their allow bit count. > > > Some students will not care and there might be two apartment that even > share the cost of the service and then you cannot do much about it > besides maybe limit per connections etc to choke them out. > > What we do at one location (granted all pre-wired) is that the > landlord is paying a small fee each month but then we provide free > internet to the tenants just fast enough to work for a individual > doing normal web browsing but then we also provide upgrade service on > a for pay basis. The people that pay tend to be greedy and want it all > to themselves ;) > > /Eje > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On Behalf Of Josh Luthman > Sent: Thursday, August 20, 2009 9:56 PM > To: sc...@brevardwireless.com; WISPA General List > Subject: Re: [WISPA] Apartment Buildings > > Mikrotik Hotspot does NOT have the capability of catching people > behind NAT. > > Example: > > Joe buys a WRT54g. WRT54g bridges to the paid wireless network. Joe > buys and account via laptop plugged into WRT54g. Joe plus in an AP > behind the router and broadcasts ESSID "Free Internet". People mooch. > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > "When you have eliminated the impossible, that which remains, however > improbable, must be the truth." > --- Sir Arthur Conan Doyle > > > On Thu, Aug 20, 2009 at 10:51 PM, Scott Carullo > <sc...@brevardwireless.com>wrote: > >> Mikrotik Hotspot between them and the internet.... >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> >> -------- Original Message -------- >> > From: "Joe Laura" <joela...@superior1.com> >> > Sent: Thursday, August 20, 2009 10:17 PM >> > To: "WISPA General List" <wireless@wispa.org> >> > Subject: Re: [WISPA] Apartment Buildings >> > >> > I had a nightmare trying to do apartment complexes. I thought I >> > touched >> on a >> > goldmine when all the signups started comming in. Then as tennants >> started >> > firing up their own A/P's others would connect to them and cancel >> service. >> > How are youll dealing with this? 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