Serial field devices will continue to operate in industrial OT environments for many years to come. As industries accelerate digitalization, the convergence of IT and OT networks has exposed these critical operational assets to new cyber threats. Many of these assets still rely on serial protocols such as RS-232, RS-422, and RS-485. While these protocols remain proven and widely used in industrial environments, they were originally designed to offer reliability and interoperability, rather than cybersecurity. As a result, serial field devices can become vulnerable when connected to today's increasingly interconnected OT environments.
Moxa has designed its new range of serial connectivity solutions with cybersecurity as a fundamental requirement. The NPort 6000-G2 series is one of the new additions to the range, acting as a critical security guardian for peripheral assets such as PLCs, meters, and consoles. This allows asset owners and operators to extend the lifespan of their installed serial infrastructure while meeting increasingly stringent cybersecurity requirements.
This launch expands Moxa's defense-in-depth coverage across the entire automation pyramid. The NPort 6000-G2 series addresses secure serial connectivity at the field level, while the EDS-G4000 and EDR-G9010 series support secure networking, segmentation, and traffic protection at the control and monitoring layers. At the upper levels of the architecture, the UC series industrial computers provide a secure platform for computing and systems integration.
Security Validation from the Ground Up:
Bureau Veritas (BV), a global testing, inspection, and certification organization, has officially validated this achievement. It confirms that the NPort 6000-G2 Series meets the stringent technical security requirements for components in Industrial Automation and Control Systems (IACS).
“We are honored to witness Moxa achieving the world’s first IEC 62443-4-2 certification for a serial device server,” said David Hsueh, Director of Cyber Technology Products for Taiwan at Bureau Veritas. “Recent threat intelligence findings reinforce a key principle: modern cyber risks often originate from overlooked components closer to everyday operations. Protecting only the core infrastructure is insufficient if edge devices remain exposed. Moxa helps the industry address this critical gap by continuously improving the security of edge devices, such as the NPort 6000-G2 Series.” For industrial buyers, selecting products that are safe from the design stage is no longer simply a regulatory compliance option, but a fundamental requirement for diligent operational safety.
A Long-Term Commitment to Serial Connectivity
For more than 35 years, Moxa has supported serial connectivity in industrial applications worldwide. “Our commitment to serial connectivity has never wavered. For decades, we’ve focused on connecting devices, and today, our dedication has expanded to keep them securely connected,” said Casper Yang, Vice President of Moxa’s Product Business Group. He continued, “As serial devices remain essential to industrial operations, they also face increasing cybersecurity challenges. This certification reflects our ongoing commitment to helping customers strengthen perimeter security while extending the lifespan and value of their trusted infrastructure.”
Key Features of the NPort 6000-G2 Series:
Integrated Serial Cybersecurity: As the world's first serial device server to achieve IEC 62443-4-2 Security Level 2 certification, the NPort 6000-G2 offers a secure-by-design architecture that addresses incident visibility, role-based authentication, and data flow protection.
Enforcement of Enterprise Security Policies: Designed for seamless integration into enterprise security frameworks (NoC/SoC), the series supports standard IT protocols, including centralized authentication servers and remote syslog for security monitoring.
Web-Based Troubleshooting with Serial Traffic Monitor: Troubleshooting is faster and requires no additional tools. Users can inspect serial and Ethernet traffic per port directly through the web interface to identify problems in minutes.
Maximum Reliability and Flexibility: Combining broad operating system compatibility with maximum serial performance, the series offers versatile operating modes and instant network connectivity, specifically designed to withstand demanding industrial environments.
