Secure Web Gateway: A Proactive Web Application Firewall for Enterprise Cyber Defense

In an era of escalating cyber threats and increasing web-based attacks, ensuring proactive andintelligent web security has become paramount. This project presents a Secure Web Gateway (SWG)designed as a proactive Web Application Firewall (WAF), leveraging the MERN stack—MongoDB,Express.js, React, and Node.js—to deliver real-time threat mitigation and secure web access. The systemcontinuously monitors and filters incoming HTTP/HTTPS requests, applying dynamic rule sets, threatintelligence feeds, and behavioral analysis to detect and block malicious traffic before it reaches criticalapplications. The backend, built with Node.js and Express, performs deep packet inspection, requestvalidation, and anomaly detection, storing threat patterns and logs in MongoDB for analysis and auditing.The React-based frontend provides administrators with an intuitive dashboard to visualize threats, managesecurity policies, and track system performance, while TailwindCSS ensures a responsive and modern UI.Real-time alerts and logging, integrated through a RESTful API, enable seamless communication betweensystem components and external security tools. This integration empowers organizations with rapid incidentresponse capabilities and robust protection against threats such as SQL injection, XSS, CSRF, and DDoSattacks. By combining proactive defense mechanisms with a user-friendly interface and scalablearchitecture, this Secure Web Gateway delivers enterprise-grade web security while maintainingperformance and usability.