Figure 4
The diagram shows a Mini Edit interface arranged from top to bottom with a menu bar at the top containing the labels File, Edit, Run, and Help, and a vertical toolbar on the left displaying icons including a cursor pointer, a terminal screen icon, a circular arrow icon, a rectangular switch icon, a circular router icon, a diagonal line tool, and a server icon. At the top center, a rectangular box labeled “The Capture Server” appears. Below it, a server icon labeled “R Y U Controller” with identifier “c 0” is placed centrally. On its right, a rectangular box is labeled “Running: S D N underscore Stat underscore Collector. p y”, and a leftward arrow from this box leads to the R Y U controller. From the controller, two red dash-dotted diagonal lines extend downward left and downward right. On the left side, a large black oval boundary labeled “Victim-Network” encloses an Open Flow switch icon labeled “s 1” at the top of the oval, with four blue lines extending downward from the switch to four terminal icons labeled “h 1”, “h 2”, “h 3”, and “h 4”. On the right side, a second large black oval boundary labeled “Attack-Network” encloses an Open Flow switch icon labeled “s 2” at the top of the oval, with four blue lines extending downward from the switch to four terminal icons labeled “h 5”, “h 6”, “h 7”, and “h 8”. At the bottom right, a rectangular box labeled “P C A P Injection Point” appears. From this rectangle, four blue arrows point upward to the hosts “h 5”, “h 6”, “h 7”, and “h 8”. At the bottom left of the interface, two buttons labeled “Run” and “Stop” are visible.Proposed SDN-DDoS2025 network architecture. Source: Created by the authors