Actually, it probably has to do w/ the frequency / harmonic resonance of the phone interfearing w/the AP ... not the proximity. Even if the phone operates on a different frequency, it can interfere w/ the AP via harmonic resonance. Harmonic Resonance occurs when one of the frequencies is a multiple of the other. Say your AP operates at 2 hz ( for simplicity sake) and your phone operates at 4 hz, then every other cycle of the phones frequency will be in phase w/ the access points. ASCII Diagra: | x -- sine peak As you can see, the sine waves are prefectly | | | | | Phone in-phase at 2 and 4 w/ respect to the phone. | | | | | | | | | | | | | | |_________________________________ T = 1 sec | | x -- sine peak | | | | ....| |.....| |. Access Point | | | | | __________________________________ T = 1 sec Are there any Ham operators out there that can confirm or deny this? -- Meredith Shaebanyan -----Original Message----- From: Jason Brvenik [mailto:jasonat_private] Sent: Tuesday, August 14, 2001 6:51 AM To: pen-testat_private Subject: RE: Emulating a wireless access point FWIW, This would seem very possible. I have a Cisco 340 AP at home I use for freedom around the house (over a VPN of course). I also have one of those cool multi-point 2.4gig cordless phones with 3 handsets. So you are asking what does this have to do with anything? Well, let me tell you. Every time I pick up the phone it blows out the association with the AP. I haven't had time to look into it any further but I am guesstimating that it is related to the proximity of the phone to the 340 cards I use. I've been intending to get the newer higher power 350 AP and cards to see what that does but with so many other fun things to spend money on I haven't gotten around to it. Jason -----Original Message----- From: Steve Skoronski [mailto:skoronskiat_private] Sent: Monday, August 13, 2001 4:08 PM To: pen-testat_private Subject: Emulating a wireless access point greetings, I have heard about wireless LAN attacks that involve 'overpowering' or competing with the real Access Point with your own. The idea is that the clients will automatically switch to your, higher powered AP, authenticate, and then you can sniff the authentication sequence. Has anyone seen software to emulate this on a PC/Laptop with a wi-fi card? Or should I go look for a used AP? TIA ---------------------------------------------------------------------------- This list is provided by the SecurityFocus Security Intelligence Alert (SIA) Service. For more information on SecurityFocus' SIA service which automatically alerts you to the latest security vulnerabilities please see: https://alerts.securityfocus.com/ ---------------------------------------------------------------------------- This list is provided by the SecurityFocus Security Intelligence Alert (SIA) Service. For more information on SecurityFocus' SIA service which automatically alerts you to the latest security vulnerabilities please see: https://alerts.securityfocus.com/
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