Design and Implementation of a Secure SDN Architecture with Integrated Intrusion Detection and VPN Tunnelling
TL;DR
A scalable and architectural security framework that improves the reliability and robustness of SDN environments, and makes it applicable to implementation in current enterprise and cloud networks is added.
Abstract
A centralized control, programmable, flexible network management is possible with Software-Defined Networking (SDN). Network security vulnerabilities and challenges like unauthorized access, traffic flood, data interception, etc., in SDN are discussed in the paper. The design and implementation of a secure SDN architecture integrating firewall mechanisms, intrusion detection, rate limiting, and VPN-based secure communication is well discussed in the paper. The proposed system is created on the basis of the Ryu SDN controller and Mininet environment of emulation, in which a complex network topology is built to mimic the actual communication situations in the real world. It is a dynamic system, which is able to monitor network activity and impose security policies on-the-fly. Experimental evaluation proves that the suggested architecture is effective in detecting and countering malicious actions, minimizing unauthorized access, and providing safe data transfer with minimal overhead. The findings present the usefulness of multi-layered security in an SDN environment. This article adds a scalable and architectural security framework that improves the reliability and robustness of SDN environments, and makes it applicable to implementation in current enterprise and cloud networks.