Windows and Linux user for 25 years [EDIT Windows for 25, Linux for 20, to be more precise], heavy macOS user (in addition to those) for the last 10 or so.
If it has a firewall of any kind, I've never noticed nor interacted with it. I've also never installed a third party firewall.
If it has a firewall of any kind, I've never noticed nor interacted with it. I've also never installed a third party firewall.