Forest Tree AI-SDN Firewall: A Hierarchical Architecture for Adaptive Network Security

The rapidly evolving of digital environment prompts advanced network security solutions with essential defend against complex cyber threats. However, network security receives a promising boost from the combination of Software-Defined Networking (SDN) and Artificial Intelligence (AI) because which enables real-time control and intelligent decision-making. Real-time management of network resources through SDN allows flexible control while AI boosts the detection of anomalies in large datasets. In this paper we proposed a Forest Tree AI-SDN Firewall with an innovative hierarchical framework that combines these two powerful technologies to provide adaptive network security solutions with scalable and resilient capabilities. The framework draws its design principles from SDN infrastructure based on three separate layers, Root Layer, Trunk Layer and Canopy Layer. Real-time traffic filtering at the Root Layer uses lightweight edge sensors to achieve 98.2% accuracy while its FPGA-accelerated TLS 1.3 inspection system handles 40 Gbps of data. The Trunk Layer uses reinforcement learning algorithms with a federated SDN control plane to achieve dynamic policy optimization through 12ms response times. The Canopy Layer uses deep learning ensemble technology that combines CNN, LSTM and GNN architectures to detect zero-day threats effectively with 99.4% recall and 92% coverage of encrypted traffic analysis. The system achieves 99.2% threat detection precision during benchmark tests while generating 0.8% incorrect alerts and allowing policy updates at speeds 5.2 times faster than conventional security systems. The proposed system evaluating encrypted information and strengthening adversarial resistance together with cross-domain coordination and achieving 38 Gbps/W energy efficiency.