# Technical Document Extraction: Network Traffic Flow Length Distribution ## 1. Image Overview This image is a stacked bar chart representing the frequency of different network traffic categories based on their "Flow Length" in seconds. The Y-axis uses a logarithmic scale to accommodate a wide range of frequency values, from $10^0$ to $10^8$. ## 2. Component Isolation ### A. Header / Legend * **Location:** Top-center, enclosed in a black-bordered box. * **Categories (Color-Coded):** * **Theft:** Bright Pink * **Reconnaissance:** Light Pink / Lavender * **DDoS:** Blue * **DoS:** Red * **Benign:** Green ### B. Main Chart Area (Axes) * **Y-Axis (Vertical):** * **Label:** Frequency * **Scale:** Logarithmic ($10^0, 10^2, 10^4, 10^6, 10^8$) * **X-Axis (Horizontal):** * **Label:** Flow Length (Seconds) * **Range:** 0 to 120 seconds. * **Markers:** Major ticks every 5 units (0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120). ## 3. Data Analysis and Trends ### General Trends by Category 1. **Theft (Bright Pink):** Concentrated heavily at the very beginning of the timeline (0-5 seconds) with a peak frequency near $10^3$. It appears sporadically and at very low frequencies (near $10^0$) across the rest of the timeline. 2. **Reconnaissance (Light Pink):** Primarily occurs in the 0-10 second range. It shows a significant presence at 0 seconds (approx. $10^6$) and tapers off rapidly. 3. **Benign (Green):** Shows a relatively consistent baseline frequency between $10^1$ and $10^2$ across the entire 120-second duration, with a notable spike at the 115-120 second mark. 4. **DDoS (Blue):** Dominates the mid-range flow lengths. It rises sharply after 5 seconds, peaks between 10 and 25 seconds (reaching frequencies above $10^6$), and remains a major component until approximately 55 seconds. It shows isolated spikes later (e.g., at 65, 90, and 110 seconds). 5. **DoS (Red):** Becomes prominent starting around 15 seconds. It maintains high frequency (approx. $10^5$ to $10^6$) between 20 and 55 seconds, often stacked on top of DDoS traffic. It drops significantly after 60 seconds. ### Key Data Points (Estimated from Log Scale) | Flow Length (s) | Primary Category | Approx. Total Frequency | Observations | | :--- | :--- | :--- | :--- | | **0** | Reconnaissance / Theft | $> 10^6$ | Highest concentration of Reconnaissance. | | **10-15** | DDoS | $\approx 10^6$ | Sharp increase in DDoS activity. | | **25-40** | DDoS / DoS | $\approx 10^6$ | Sustained high-volume attack traffic. | | **50-55** | DoS / DDoS | $\approx 10^6$ | Final peak of sustained DoS/DDoS before drop-off. | | **60-110** | Mixed / Benign | $10^1 - 10^4$ | Significant drop in overall traffic; sporadic spikes. | | **110** | DDoS | $\approx 10^5$ | Late-stage isolated DDoS spike. | | **120** | Benign | $\approx 10^3$ | Significant Benign traffic at the end of the window. | ## 4. Summary of Findings The chart illustrates that different types of network events have distinct temporal signatures. **Reconnaissance** and **Theft** are "quick" events occurring almost instantaneously. **DDoS** and **DoS** attacks are characterized by sustained flows lasting between 10 and 60 seconds. **Benign** traffic is the most temporally diverse, appearing consistently across the entire measured spectrum but representing a lower volume compared to the peak of attack traffic.