The good thing is that you don’t need to know which ports to block. You just set your firewall up to deny by default and then start whitelisting the things you want to allow.
Even easier if you put your “smart” devices in a separate network, then it’s just:
Allow traffic from home net to Internet
allow traffic from home net to iot-net
drop the rest
Now you can surf the internet, control your devices and they can’t phone home
Do they tell you in their manual what ports they work with, or is there a website that will let you know based on a product?
The good thing is that you don’t need to know which ports to block. You just set your firewall up to deny by default and then start whitelisting the things you want to allow.
Even easier if you put your “smart” devices in a separate network, then it’s just:
Now you can surf the internet, control your devices and they can’t phone home