In an era where railway systems are no longer isolated «air-gapped» islands, connectivity has become a double-edged sword. As digital transformation accelerates, the risk of cyber intrusion grows. For Railway Operators and System Integrators (SIs), Lantech’s new OS5 Security Switch series addresses this head-on, shifting the paradigm from «perimeter defense» to a «Zero Trust» architecture designed specifically for the rigorous demands of the rail industry.

The Modern Railway Dilemma: Connectivity vs. Vulnerability

For Railway Operators, the primary mission is absolute availability. Every minute of downtime translates into economic loss and potential safety risks. However, traditional management planes were rarely designed with modern cybersecurity in mind. Once a perimeter is breached, the «brain» of the network often sits exposed.

For System Integrators (SIs), the primary challenges are complexity and compliance. In vast railway networks with thousands of nodes, it is no longer enough to simply meet strict standards like IEC 62443; SIs must now proactively prepare for the even more severe cybersecurity challenges of the future. This monumental task requires a platform that delivers both exceptional performance and inherent, built-in protection.

The Zero Trust Core:
Three Pillars of Security

Traditional security protects the gates, but the real threat often starts inside the network. Because Security Switches are the ones directly connected to every camera, sensor, and ticketing machine, they act as your first line of defense.

While firewalls guard the entrance, Lantech OS5 SECURITY SWITCH protects inside the boundaries. By checking every connection at the device level, we make sure that one 

infected device cannot take down your entire system. We don’t just verify the front door; we protect every port, every second.

Lantech OS5 Security Switches redefine security through Zero Trust.

Never trust, always verify — via three core pillars: cryptographic integrity, system resilience, and secure management. 

Why is Lantech OS5 SECURITY SWITCH more secure than the rest?

1. Cryptographic Integrity:

First, it delivers «Bank-like» 

Cryptographic Integrity. 

Lantech OS5 SECURITY SWITCH features SHA-512 encryption—a powerhouse of security that far surpasses the standard 256-bit encryption found in ordinary switches. With integrated MACsec support, it’s like adding a high-speed VPN shield to your Layer 2 network, ensuring your data is completely spy-proof. To harden the foundation, our Secure IC technology ensures the firmware is tamper-proof from the very second it boots. 

Most importantly, OS5 SECURITY SWITCH applies Symmetric and Asymmetric Key Infrastructure to all management components. This includes SNMPv3 using USM/VACM (Symmetric key mechanism) and TSM (Asymmetric Public-key mechanism) to determine which OIDs/Protocols user is allowed to view or access. We ensure every management command is authenticated with the highest level of cryptographic trust.

2. System Resilience:

Second, it offers System Resilience through firewall-like logging. For System Integrators and operators, one of the primary fears is facing an incident with no clear trail to follow—no way to reconstruct the attack path or identify what was affected. Built on IEC 62443-4-2 and adhering to RFC 5424, OS5 SECURITY SWITCH provides firewall-like logging with a core focus on Log Integrity. 

By ensuring all logs are fully exportable for external auditing and offline analysis, we achieve the ‘No Trace Left Behind’ standard. This ironclad post-event traceability allows you to pinpoint the root cause.

3. Security Management:

Third, we provide Complete Security Management. In industrial environments, the most critical risk is an administrative interface that becomes an entry point for attackers. To prevent this, Lantech OS5 SECURITY SWITCH implements multi-layered authentication, supporting RADIUS and SSH to ensure only verified users gain access. Combined with login failure detection and full log traceability, every entry is monitored and recorded.

Once inside, RBAC (Role-Based Access Control) ensures users can only access what they are assigned. For example, an engineer can manage specific track sections without any risk of altering the core network configuration. With SNMPv3 for secure monitoring and built-in DDoS protection, OS5 SECURITY SWITCH significantly reduces the attack surface and keeps your critical systems running, no matter what.

Lantech aims beyond standard compliance by pursuing German BSI TR-02102-4 guideline, signifying a platform capable of protecting national-level critical infrastructure.

Performance Meets Protection:

The Hardware/Software

Beyond its security core, the OS5 SECURITY SWITCH provides a rugged hardware foundation to match its intelligence. Engineered for the harshest environments, it features 10G high-speed uplink ports for the network backbone in a fanless design, with EN50155 T4 certification to ensure flawless operation from -40°C to 70°C. 



For electrical reliability, the PoE galvanic isolation sustains transient voltages up to 165V, safeguarding critical equipment. Combined with a comprehensive L2/L3 management suite and rail-specific TTDP, the OS5 SECURITY SWITCH supports hybrid ring compatibility, allowing ERPS and xSTP to coexist by port or VLAN within a single switch. This advanced redundancy ensures that performance and stability are never compromised, even in the most complex network architectures.

Conclusion: Trust as a Core Requirement

As Lantech CEO Günter Meixner states: «Cybersecurity is no longer simply an IT feature; it is a core requirement for operational trust and resilience.» Lantech OS5 is more than a switch—it is a secure foundation for the future of rail. It empowers SIs with easy-to-deploy compliance and provides Operators with a robust defense, ensuring that while the world becomes more connected, the tracks remain safe and secure.

For more information on Lantech OS5 Security Switches, visit: 
https://lantechcom.eu/

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