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.