nanog mailing list archives

Re: Marriott wifi blocking


From: Michael Van Norman <mvn () ucla edu>
Date: Fri, 03 Oct 2014 19:48:23 -0700

One of the reasons I pointed to the California law is that it covers above
L1 even if FCC authority does not.  The state law also provides for
criminal penalties.  I do not know if other states have similar laws.

/Mike

On 10/3/14 7:42 PM, "Hugo Slabbert" <hugo () slabnet com> wrote:

On Fri 2014-Oct-03 16:49:49 -0700, Owen DeLong <owen () delong com> wrote:


On Oct 3, 2014, at 16:12 , Wayne E Bouchard <web () typo org> wrote:

On Fri, Oct 03, 2014 at 02:23:46PM -0700, Keenan Tims wrote:
The question here is what is authorized and what is not.  Was this
to protect their network from rogues, or protect revenue from captive
customers.

I can't imagine that any 'AP-squashing' packets are ever authorized,
outside of a lab. The wireless spectrum is shared by all, regardless
of
physical locality. Because it's your building doesn't mean you own the
spectrum.


I think that depends on the terms of your lease agreement. Could not
a hotel or conference center operate reserve the right to employ
active devices to disable any unauthorized wireless systems? Perhaps
because they want to charge to provide that service, because they
don't want errant signals leaking from their building, a rogue device
could be considered an intruder and represent a risk to the network,
or because they don't want someone setting up a system that would
interfere with their wireless gear and take down other clients who are
on premesis...

Would not such an active device be quite appropriate there?

You may consider it appropriate from a financial or moral perspective,
but it is absolutely wrong under the communications act of 1934 as
amended.

The following is an oversimplification and IANAL, but generally:

You are _NOT_ allowed to intentionally cause harmful interference with a
signal for any reason. If you are the primary user on a frequency, you
are allowed to conduct your normal operations without undue concern for
other users of the same spectrum, but you are not allowed to
deliberately interfere with any secondary user just for the sake of
interfering with them.

The kind of active devices being discussed and the activities of the
hotel in question appear to have run well afoul of these regulations.

As someone else said, owning the property does not constitute ownership
of the airwaves within the boundaries of the property, at least in the
US (and I suspect in most if not all ITU countries).

Owen


Serious question:  do the FCC regulations on RF spectrum interference
extend beyond layer 1?  I would assume that blasting a bunch of RF noise
would be pretty obviously out of bounds, but my understanding is that
the mechanisms described for rogue AP squashing operate at L2.  The
*effect* is to render the wireless medium pretty much useless for its
intended purpose, but that's accomplished by the use (abuse?) of higher
layer control mechanisms.

I'm not condoning this, but do the FCC regulations RF interference
apply?  Do they have authority above L1 in this case?

-- 
Hugo



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