Oh, I connect the few "smart" devices I have alright but I do not allow them access to the 'net. Anything "smart" is kept in a separate network which terminates

Oh, I connect the few "smart" devices I have alright but I do not allow them access to the 'net. Anything "smart" is kept in a separate network which terminates on a double-homed container where I try to interface with the things using free software. This often means I need to replace the firmware on the "smart" thing - Tuya-encumbered "smart plugs" get turned into Tasmota-equipped plugs which only communicate with the container, not with some "cloud" somewhere in China - or devise some way to circumvent the cloudy "services" they want to connect to - Midea-compatible heat pumps with OSK-103 "smart" interfaces. Just to show I'm not singling out Chinese "smart" things I put the (Austrian) Fronius inverter in the same walled network where it never connects with the Austrian mothership. This means that any "smart" thing I have - and I do have some since I use these things to plan power consumption based on electricity prices (we have hourly rates) and solar production - never tell their former owners where they are. I'm fine with my equipment having networked features, I just want to be the one in control and I do not want any data to leak. If the things need specific data to work I want to be the one who tells them where to get them, if they need to report some data I want to be the arbiter on whether this is allowed, what is reported and to whom the reports are sent.