Vanguard by Nelysis is a Network Cyber Management (NCM) system designed for early detection, warning, and prevention of cyber threats on Physical Security elements and Control Systems networks. It provides real-time monitoring, control, and protection for physical security and control networks, including IoT devices such as CCTV cameras, video management systems, access control systems, intrusion alarms, smart I/O controllers, and fire detection devices. Vanguard uses deep packet inspection and machine learning algorithms to detect behavior anomalies, new network threats, and cyber attacks without relying on digital signatures. The system is specifically optimized for Security IoT devices and designed for closed LANs. It operates by monitoring network components, establishing baselines of normal activity, and identifying anomalies through comparison with current activity. Vanguard presents network information at both logical and physical levels, offering protection against critical system failures, edge device neutralization, and operational disruptions.