Comment Re:What does this bring to the table? (Score 2) 66
It brings user friendliness.
And you are missing the main feature, which is pre-approval of connections rather than "see which processes are opening which sockets" - then it's already too late to stop data exfiltration.
Yes, you can do this with iptables, mitm-cli tools, or opensnitch, but obviously there is a need/market for more user friendly interface.