Actually, it Dofler uses driftnet, ettercap, dsniff, tshark, ngrep, and PVS and wired them together into a web front-end. Driftnet was the component that made

Actually, it Dofler uses driftnet, ettercap, dsniff, tshark, ngrep, and PVS and wired them together into a web front-end. Driftnet was the component that made porn filtering very hard, as driftnet gives you no indication of WHERE the image came from, just that it found something.