Is it mostly about the "matrix" interface in this case? Otherwise seems like exactly what tools like https://www.obdev.at/products/littlesnitch/index.html https

Is it mostly about the "matrix" interface in this case? Otherwise seems like exactly what tools like https://www.obdev.at/products/littlesnitch/index.html https://www.obdev.at/products/littlesnitch/index.html etc. do.