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| Subject: | Re: Wireless range limiting |
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| Date: | Wed, 16 Apr 2008 10:40:19 -0600 |
where you want the wireless signal to reach and it would reject clients outside this range based on the signal.
Unless your radio environment were perfectly symmetric (same client radios, same client construction, held in same orientation), it would be difficult to do reliably. Even then, all it would take is a high-gain antenna and an overpowered radio, and who's to say that client at -79dBm really isn't on-campus? Signal strength can be used to perform rough triangulation, which I've seen some products use to do AP exclusion and very rough client tracking, but definitely not signal strength alone. Even that can be defeated with a narrow-beam (3-5 degree) antenna. The 802.11 'security' arena is chock-full of snake oil, especially since there aren't many competent clients with good radio security people.
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