I use TinyWall
https://tinywall.pados.hu/
You get a nice graphic user interface and a secure whitelist approach--you list programs that have internet access, and then nothing else gets through. Default is 'sealed shut' so you whitelist your web browser, lan, and HFS as the first step.
https://tinywall.pados.hu/
You get a nice graphic user interface and a secure whitelist approach--you list programs that have internet access, and then nothing else gets through. Default is 'sealed shut' so you whitelist your web browser, lan, and HFS as the first step.