Re: Guerilla Internet Service Providers (fwd)

At 23:33 1/2/96 -0800, Lucky Green wrote:

Previous exchanges deleted...

>Infrared and laser are not very reliable between buildings during fog.
>Between your house and your neighbor, a low cost 900MHz bridge would be the
>best way to go. On such short distances, an omni-directional antenna will
>work just fine. Check out Solectek (cheaper) or Cylink (faster). Both offer
>DES link encryption.

With a tightly focused beam (light is easy, I don't know about lower
frequencies), you can prevent interception except by very obvious physical
devices.  (e.g. Someone in a cherry picker truck.)  You may be able to
avoid the need to encrypt the link (and all the paranoia about key
management, advances in factoring etc. that that implies.)

Bill

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Bill Frantz                   Periwinkle  --  Computer Consulting
(408)356-8506                 16345 Englewood Ave.
frantz@netcom.com             Los Gatos, CA 95032, USA

Bill Frantz writes:
>With a tightly focused beam (light is easy, I don't know about lower
>frequencies), you can prevent interception except by very obvious physical
>devices.  (e.g. Someone in a cherry picker truck.)  You may be able to
>avoid the need to encrypt the link (and all the paranoia about key
>management, advances in factoring etc. that that implies.)

Key management problems?  With someone across the street?  You gotta be
kidding.  If you can't memorize the key (say with the S/Key key-to-
phrase algorithm) and walk it across the street, write it on the back
of an envelope, walk it over, re-key, and burn it.