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Re: Internet Via Electric Lines? (fwd)
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In <[email protected]>, on 10/08/97
at 07, Jim Choate <[email protected]> said:
>Forwarded message:
>> From: "William H. Geiger III" <[email protected]>
>> Date: Wed, 08 Oct 97 01:28:42 -0500
>> Subject: Re: Internet Via Electric Lines?
>> This is nothing new.
>At least late 70's.
>> I think it was GE that several years ago created phone extensions that you
>> plugged into your power outlets, no need to run wire to put in an extra
>> outlet. I believe that X-10 uses this same principle for computer control
>> of household appliances.
>>
>> Not to mention data leakage through power lines is an issue long reconized
>> by the TEMPEST crowd.
>>
>> The trick here seems to be in routing the data. How do you get data on the
>> power grid routed to the location that you want it to go??
>The trick with X-10 is to stay away from transformers as the signal won't
>go through them effectively. This ends any dreams of sending data to your
>neighbor, the signal won't go through your power meter.
This seems to be a Goodthing(TM) for residential X-10 as it would seem to
take care of a lot of security issues by effectively isolating each home
from others who may be running the same system.
Has anyone researched the security issues around X-10? Is the Transformer
isolation good enough protection from a dedicated attack (as opposed to
accidental signal leakage)? Are their alternative routes for transmitting
the FM signal (Airwaves) that the X-10 devices would pick up?? Do any of
the current X-10 devices use signal authentication/verification?
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William H. Geiger III http://www.amaranth.com/~whgiii
Geiger Consulting Cooking With Warp 4.0
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