Monitor OT/ICS Networks and Industrial Protocols While Improving Operational Resilience
Industrial and manufacturing networks were built for reliability, not visibility — many operational technology (OT) environments have run for years with little to no network monitoring. As IT and OT networks converge, that gap becomes a serious operational and security risk. ntopng bridges IT and OT visibility, monitoring industrial control systems and networked sensors alongside traditional IT infrastructure in one unified view.
Why OT/ICS Networks Need Monitoring
Industrial environments face challenges traditional IT monitoring tools aren’t designed for:
- Industrial protocols (Modbus, DNP3, and others) that standard monitoring tools don’t recognize or classify.
- OT networks historically air-gapped or isolated, now increasingly connected to IT networks and the internet.
- Legacy equipment that can’t tolerate active scanning or intrusive monitoring methods.
- Operational resilience requirements where downtime has physical, not just financial, consequences.
The Solution: Unified IT/OT Visibility with ntopng
- Industrial protocol recognition (nDPI) — classify and monitor industrial and SCADA protocols alongside standard IT traffic, giving OT teams the same visibility IT teams have relied on for years.
- Passive, non-intrusive monitoring — flow-based and mirrored traffic analysis observes industrial networks without actively probing sensitive legacy equipment.
- Unified IT/OT dashboards (ntopng) — monitor industrial control systems, networked sensors, and corporate IT infrastructure in a single console, closing the visibility gap at the IT/OT boundary.
- Anomaly detection — flag unusual communication patterns between OT devices, or between OT and IT networks, that could indicate misconfiguration or compromise.
- Historical logging — support operational audits and incident investigations with historical records of industrial network activity.
Real Use Cases
Gaining first-time visibility into a legacy OT network
A manufacturing plant with no prior network monitoring deploys ntopng passively via traffic mirroring, gaining visibility into industrial protocol traffic without touching or risking disruption to legacy control systems.
Detecting unauthorized IT/OT communication
As IT and OT networks converge, ntopng flags a corporate IT device communicating directly with an industrial controller — a connection that should not exist — allowing the security team to investigate before it becomes an incident.
Monitoring distributed industrial sites
A manufacturer with multiple plants uses centralized ntopng dashboards to monitor OT network health across every site from a single operations team, without requiring specialized staff at each location.
Supporting operational resilience audits
Historical traffic and protocol data from ntopng provides the documentation needed to demonstrate network segmentation and monitoring controls during compliance or resilience audits.
Identifying a misbehaving industrial device
A sensor begins generating abnormal traffic volume, degrading network performance for other industrial systems. ntopng identifies the device and traffic pattern, letting operations isolate it before it affects production.
Why Manufacturing and Industrial Teams Choose ntopng
- Bridges IT and OT — one console for industrial and corporate network visibility.
- Non-intrusive by design — passive monitoring safe for sensitive legacy equipment.
- Recognizes industrial protocols — visibility standard IT tools simply don’t provide.
- Supports operational resilience — anomaly detection and historical logging for audits and incident response.
Related Use Cases
- Network Visibility & Monitoring
- Threat Detection & Network Security
- Flow Collection & Traffic Analytics