On Fri, 2024-03-22 at 11:45 -0500, Thomas Cameron wrote:
> You will almost certainly not be able to connect between devices on a 
> commercial wifi network. They don't want folks to attack other machines 
> on the network. It would be a huge scandal if a hotel allowed a guest to 
> connect to other guests' laptops.

And yet, it happens...

I have a home network, it allegedly offers an isolated guest WiFi WLAN.
I put things I don't trust on it, such as smart home devices.  I've
dabbled with some smart lighting, putting some mood lighting to come on
at dusk, dim late at night so I don't trip over anything going to the
bathroom, and go off at dawn.  Leaving essential lighting manually
controlled.  And I won't be putting anything I consider hazardous under
cloud control (such as heating).

Sometimes you *can* make connections to them.  Sometime they can make
connections to things on the wired LAN (I don't think that should be
allowed).

My phone, on my full-access WiFi can definitely control the lighting on
the isolated guest WiFi, though I expect that's going through the
cloud.  My phone can sometimes access the Google TV dongle, trialling
it on the isolated guest WiFi, I'm not sure what method that's using.
 
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