Comodo Firewall, free, (http://personalfirewall.comodo.com/) has a check box on its control screen "Stop All Traffic". You can also select "Block All" with a right click to its system tray icon. I think that is what you are looking for. I can't vouch for compatibility with other software.


kelso

Dell Desktop XPS 8100 W10 HomePrem/64 / Core i5 760 (quad, 2.8GHz) / 8GB DDR3 / 1 TB SATA / ViewSonic VG2428wm / EMU1616 PCI / Event ASP6 Active Monitors / BIAB 2019 64 bit (609) / Cakewalk