🤖 AI Summary
To address the challenges of real-time detection and delayed response to DDoS attacks, this paper proposes an end-to-end, SDN-driven defense framework. The framework integrates a lightweight LSTM-based anomaly detector deployed at the network edge—enhanced by PCA for feature dimensionality reduction—with a centralized SDN controller that dynamically installs flow-blocking rules, thereby establishing a closed-loop “detection–decision–execution” system. Its key innovation lies in the tight coordination between LSTM-based detection and SDN-based mitigation, enabling attack identification and response within milliseconds. Evaluated on the CICDDoS2019 dataset, the framework achieves 99.2% detection accuracy, an average response latency of <120 ms, and a false positive rate of only 0.3%, significantly outperforming baseline models such as XGBoost. Designed for high accuracy, ultra-low latency, and edge-deployable lightness, the framework provides a scalable architectural paradigm for real-time DDoS defense.