OT security for energy utilities topics
Protect decentralized energy infrastructure from unauthorized access
Focus on energy supply: signal and network control
The IT networks portfolio for critical infrastructure
Managing security incidents
Securing data flows
Monitoring the IT-network and identifying anomalies
Core principles of our IT reference architecture for critical infrastructures
BSI and NIS 2 compliance: operational benefits for energy providers with Rohde & Schwarz
Utility digitalization and the decentralization present new challenges for energy providers, municipal utilities and regulatory authorities. Seamless supply security for electricity, gas and district heating providers means the actual generation and distribution facilities (Operational Technology / OT) must be shielded from unauthorized access. Stable, fail-safe, and legally compliant operation is the foundation for both protecting the integrity of supply networks and meeting the stringent NIS 2 Directive requirements.
As an integral component of critical infrastructure, energy companies need security solutions that preserve business continuity and proactively minimize cyber risks. Effective protection demands a clear separation between IT and OT, as well as seamless transitions at network boundaries. Our regulatory-based IT architecture for critical infrastructure and OT networks serves as a technical framework for appropriate security measures that do not disrupt ongoing operations.
Targeted protection of control and communication signals is elementary for energy providers. Rohde & Schwarz Networks and Cybersecurity (formerly LANCOM Systems) provides secure and reliable IT-networks for critical infrastructure. By monitoring data traffic and isolating critical components, signals are protected and risks are controlled before they can impact core operations.
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The Rohde & Schwarz portfolio offers coordinated security building blocks that interface directly with decentralized generation and distribution facilities for comprehensive protection. The goal is resilient operations where critical OT functions and utility services are fully maintained, even in the event of external network disruptions. The technical implementation is based on the reference architecture:
Should irregularities occur within a utility network, clear procedures prevent interruptions to ongoing operations. Our IT-Security ecosystem permanently controls the three central processes in the network as a digital gatekeeper: who can access the system (access), which data flows between facilities (data flows), and who modifies system settings (changes). Continuous monitoring means any unauthorized deviation is immediately detected and blocked.
Personnel in network control centers word to make sure ongoing network operations remain stable. The security architecture helps them monitor data flows. Since the system explicitly defines which facility is permitted to communicate with which components, unauthorized or undocumented direct connections can be blocked automatically with network access controls (NAC). If an irregularity occurs, operators must not shut down the entire supply network. The subdivision into protected security zones lets them maintain controlled energy flows and selectively isolate affected segments.
Security management is responsible for IT network integrity and regulatory compliance. Our IT-security ecosystem can integrate security information and event management (from Enginsight). Should an unauthorized modification or anomaly be found in the IT-network, the team can use verified event logs forwarded to a central monitoring system (SIEM), allowing security experts to initiate immediate, well-founded forensics and guide targeted countermeasures.
The design of our IT reference architecture is based on five fundamental principles:
1. Strict IT network segmentation: OT zones are completely isolated from the corporate IT environment and communicate only through defined and controlled transition points.
2. Defense in depth: Multiple layers of security—including perimeter firewalls, OT segment firewalls, and encrypted VPN tunnels—protect the infrastructure against unauthorized access.
3. Centralized management and visibility: The R&S LANCOM Management Cloud and the SIEM application provide comprehensive visibility and centralized control of all network components.
4. Scalability: The zone-based architecture enables the flexible integration of new sites or security technology segments without requiring changes to the underlying IT reference architecture.
5. Coexistence with customer IT: Defined transition points (DMZ/NAT) enable the controlled use of IT services such as Active Directory, DNS, and PKI without compromising the isolation of the OT environment.
Rohde & Schwarz security architecture not only protects facilities but also provides long-term operational, economic and legal benefits for energy providers in their daily operations.
