On 3/1/18 10:02 AM, Pete Biggs wrote:
What are your constraints? [AKA what have you been told to do.]
The task is to provide wireless coverage for employees and customers on
company premises. It is desirable to be able to keep track of customers,
as in knowing where exactly on the premises they currently are (within
like 3--5 feet, which is apparently tough),
Tough? I would say basically impossible. The only way of getting that
sort of accuracy is to either have lots of pico cells so you know which
AP a device is connected to, or be able to triangulate. WiFi has a
reasonable range and devices like to hang on to an AP for as long as
possible, even if they can pass off on to a closer more powerful one.
I know retailers are looking at targeting customers via their location,
but I think that currently needs the co-operation of the customer's
device via a downloaded app.
There ARE companies that specialize in this type of thing. It's really
NOT a quicky-homebrew thing... Especially if one is staring with "tell
me how to use <blank> AAA protocol".
and simpler things like knowing
how long they stay and if they have been on the premises before.
I can see now why you wanted to stop customers/employees from using
their 4G connection.
One thing to keep in mind if this is in the US... Blocking cellular
bands (and publicly accessible radio in general) is grossly illegal and
a serious felony.
Marriott corporation tried it with WiFi and got smacked with a VERY
large fine and I heard that some of the licensed radio engineers
involved were also personally fined... They should have known better.
The commonly used technique is Bluetooth beacons... But the victims (er
customers) HAVE to co operate.
That is what using RADIUS apparently leads to when you have devices using
PXE boot. Maybe they need to be considered as a security risk and be
replaced.
You mentioned X2Go and that your PXE booting clients used it. I know
X2Go and the client is a standalone app that uses ssh to login to the
server to initiate a remote desktop type environment. There's nothing
in X2Go per se that requires a persistent network connection before
they connect. So, am I right in assuming that your PXE clients are
actually diskless machines that get all of their environment from the
network?
P.
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