The picture shows attacks from the Internet to computers located at the University of Konstanz (brute force SSH attacks). The background represents the university’s network structure with computer systems as rectangles. External hosts are shown as colored circles on the outside. The splines represent the connections between attackers and computers within the network. This reveals a distributed attack originating from hundreds of hosts working together in attempt to break into specific computer systems.
More Information on: http://ff.cx/nflowvis/