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Bridging the IT/OT gap: Real-time monitoring for industrial systems made easy

Written by Sascha Neumeier | Jun 18, 2025

Ever had that sinking feeling when your production line suddenly grinds to a halt, and nobody knows why? Or perhaps you've witnessed the classic finger-pointing session between IT and OT teams during an outage? "It's not our network!" says IT. "Well, the machines were working fine yesterday!" counters OT. Meanwhile, the clock is ticking, and every minute of downtime is burning money.

Welcome to the modern industrial dilemma: two critical worlds - Information Technology (IT) and Operational Technology (OT) - speaking completely different languages while trying to keep the same business running. But what if there was a universal translator? A solution that could bridge this gap and create harmony between these traditionally siloed departments?

Why can't we all just get along?

Let's face it - IT and OT teams have historically been like distant relatives who only see each other at awkward family gatherings. They have different priorities, different tools, and often, different perspectives on what matters most.

IT folks are obsessed with data security, network performance, and keeping those pesky cyber threats at bay. Their world revolves around servers, switches, and software updates. Meanwhile, OT teams are laser-focused on machine uptime, production efficiency, and safety protocols. For them, PLCs, HMIs, and SCADA systems are the bread and butter of daily operations.

This division made perfect sense when these systems were completely separate. But nowadays, when everything is somehow connected, that separation is not just inefficient - it's downright dangerous. When a conveyor belt stops because of a network issue, or a critical software update crashes your production line, who's responsible? More importantly, who has the visibility to quickly identify and fix the problem?

The convergence challenge: When worlds collide

The fourth industrial revolution didn't ask for permission - it just happened. Suddenly, machines that once operated in isolation are now connected to networks. Data that was once locked in proprietary systems is now flowing freely between departments. And with this convergence comes a new set of challenges:

  • Security blind spots: When IT security protocols meet OT operational requirements, gaps inevitably appear
  • Fragmented monitoring: Multiple tools showing different pieces of the puzzle, but no complete picture
  • Communication breakdowns: When an issue spans both domains, troubleshooting becomes a complex dance of interdepartmental coordination
  • Delayed response times: Without unified visibility, problems that cross IT/OT boundaries take longer to resolve

Consider this real-world scenario: A logistics warehouse relies on barcode scanners connected to conveyor systems via Modbus, while the network infrastructure supporting these operations runs on standard IT protocols like SNMP and Ping. When something goes wrong, technicians might spend hours trying to determine if the issue is with the scanners, the conveyor system, or somewhere in the network infrastructure.

Enter unified monitoring: One dashboard to rule them all

This is where Paessler PRTG steps in as the bridge between these two worlds. Traditionally known for its robust IT monitoring capabilities, PRTG has evolved to understand and speak the languages of both IT and OT environments.

PRTG supports a comprehensive range of protocols that span both domains:

  • IT Protocols: SNMP, WMI, Ping, Flow, REST APIs
  • OT Protocols: OPC UA, Modbus TCP, MQTT

This multilingual capability means you can monitor everything from your data center servers to your factory floor PLCs in a single pane of glass. No more switching between different monitoring tools or trying to correlate events across disparate systems.

Real-world success: From hours to minutes

Don't just take my word for it - let's look at how real companies are using this unified approach to transform their operations.

Process Automation Solutions, a global industrial automation company with over 1,400 employees, has implemented PRTG to monitor complex industrial environments. In one case study involving a petrochemical plant, they used PRTG to solve a mysterious issue where redundant DCS servers were randomly swapping for no apparent reason. The unified monitoring approach identified a memory leak in Honeywell Experion services that was causing the master server to crash - something that would have been nearly impossible to diagnose with traditional siloed monitoring.

Similarly, Centroflora Group, a Brazilian manufacturer of botanical extracts and pharmaceutical ingredients, implemented PRTG to monitor their factory floor operations. With three separate production segments (evaporation, drying, and supply extraction) running on Siemens PLCs, they previously had to physically send maintenance personnel to diagnose issues - a process that could take 6-7 hours. After implementing PRTG, they reduced diagnostic time to just a few minutes and even achieved a 3-4% reduction in power costs by identifying equipment that was running unnecessarily.

Deploy anywhere with the Multi-Platform Probe

One of the challenges in bridging IT and OT has always been the physical and logical separation of these environments. Industrial networks often have strict security requirements, air-gapped segments, or non-Windows environments where traditional monitoring solutions struggle to operate.

PRTG's Multi-Platform Probe addresses this challenge by supporting deployment on:

  • Linux-based systems (Ubuntu, Debian, Red Hat)
  • Docker containers
  • ARM-based devices like Raspberry Pi
  • Edge gateways in industrial environments

This flexibility means you can extend monitoring to every corner of your infrastructure, regardless of platform or location. The Multi-Platform Probe is like having a monitoring agent that speaks both IT and OT languages and can live comfortably in either world.

For example, you could deploy the probe on an edge gateway that sits between your OT network and IT infrastructure, collecting data from PLCs via OPC UA while simultaneously monitoring network performance with SNMP - all without requiring a Windows server in your restricted industrial zone.

Building a unified monitoring strategy

So how do you actually implement this unified approach? Here's a practical roadmap:

  1. Start with a comprehensive inventory: Identify all the devices, systems, and protocols in both your IT and OT environments.

  2. Map the dependencies: Understand how IT and OT systems interact and depend on each other.

  3. Implement unified monitoring: Deploy PRTG with appropriate probes to cover both environments.

  4. Create cross-domain dashboards: Build visualizations that show the relationships between IT and OT components.

  5. Establish joint alert procedures: Develop notification workflows that involve both IT and OT teams when issues span both domains.

The key is to think holistically about your infrastructure. A network switch is no longer just an IT asset when it's supporting critical production systems. Similarly, a PLC is no longer just an OT concern when it's transmitting data to enterprise systems for analysis.

Not your standard FAQ

Isn't OT monitoring much more complex than IT monitoring?

Yes and no. OT systems often use specialized protocols and have unique requirements, but the fundamental principles of monitoring remain the same: collect data, establish baselines, set thresholds, and alert on deviations. The real complexity comes from understanding the context and impact of that data in an industrial setting. That's why having a tool that can speak both languages is so valuable - it provides the technical capability while you provide the operational context.

Can unified monitoring create security risks by connecting previously isolated systems?

This is a valid concern, but it's based on a misconception. Unified monitoring doesn't necessarily mean physically connecting previously isolated networks. PRTG can be deployed with remote probes that respect existing network segmentation while still providing centralized visibility. In fact, proper monitoring can enhance security by providing visibility into unauthorized connection attempts or unusual traffic patterns that might indicate a breach.

How do you convince both IT and OT teams to adopt a unified monitoring approach?

Start with a pilot project that addresses a specific pain point affecting both teams. For example, monitor the network infrastructure supporting a critical production line. When both teams see how unified visibility helps them resolve issues faster and reduce blame-shifting, adoption becomes much easier. It's also helpful to involve both teams in the dashboard design process so they each get the views most relevant to their responsibilities.

The future is unified

As industrial environments continue to evolve, the line between IT and OT will blur even further. Edge computing, Industrial IoT, and AI-driven automation are creating new hybrid environments that defy traditional categorization.

In this converged future, unified monitoring isn't just a nice-to-have - it's essential for maintaining operational resilience. Organizations that bridge the IT/OT gap now will be better positioned to adapt to these changes and leverage new technologies without sacrificing reliability or security.

With tools like PRTG that can monitor everything from data centers to factory floors, that future is already within reach. The question isn't whether you should unify your monitoring approach, but how quickly you can implement it before the next unexpected outage tests your current fragmented system.

Ready to bridge the gap between your IT and OT teams? The technology is ready - are you? ➡️ Try PRTG Network Monitor free for 30 days and experience a hassle-free monitoring experience.