Little Snitch https://www.obdev.at/products/littlesnitch/index.html https://www.obdev.at/products/littlesnitch/index.html Lulu https://objective-see.com/produc

Little Snitch https://www.obdev.at/products/littlesnitch/index.html https://www.obdev.at/products/littlesnitch/index.html Lulu https://objective-see.com/products/lulu.html https://objective-see.com/products/lulu.html Haven't used a block-first, prompt to allow firewall on windows or linux. Similar to noscript in the browser