Start app/command-line tool without internet/network access Is there anything that can help me launch an app or command-line tool without internet or network access even when I'm connected to the internet? (so that I can use other apps with Internet, and block access for some apps) Like a firewall? Or something that intercepts the syscalls, something like maybe?
It seems that what you're looking for would be Little Snitch. You can find out more about it and download it here.