Understanding IEC 62443-4-2 Security Level 2 for Industrial Networks

What is IEC 62443-4-2?

IEC 62443-4-2 is a part of the IEC 62443 series of standards, which are designed to address cybersecurity in industrial automation and control systems (IACS). Specifically, IEC 62443-4-2 provides detailed requirements for the cybersecurity capabilities of IACS components, including embedded devices, network devices, host devices, and software applications.

What Does Security Level 2 Mean?

Security Level 2 (SL2) refers to one of the security levels defined within the IEC 62443 framework. Each security level represents a set of security requirements that address increasing degrees of threat and risk. SL2 focuses on protecting against intentional violations using simple means with low resources, generic skills, and low motivation. It is the first level to protect against cyber attacks. Security Level 1 (SL1) only protects against misuse of the system.

Key Features of IEC 62443-4-2 Security Level 2 Compliant Products

Advanced Security Measures:

  • Authentication and Authorization: Ensures that only authorized users and systems can access the network and its resources.
  • Data Integrity and Confidentiality: Protects data from being altered or intercepted during transmission.
  • Event Logging and Monitoring: Keeps detailed logs of activities for monitoring and auditing purposes.

Robust Threat Mitigation:

  • Resistance to Known Vulnerabilities: Devices are designed to resist common cyber threats and vulnerabilities.
  • Regular Security Updates: Compliant devices receive regular updates to address newly discovered security vulnerabilities. These updates can be easily installed centrally if the network is connected to the internet, or manually if it is isolated.

Operational Security:

  • Consistent Security Posture: Maintains a consistent level of security across all network devices, reducing potential weak points.
  • Reliability and Performance: Ensures that security measures do not compromise the performance and reliability of network operations.

Why Choose IEC 62443-4-2 Security Level 2 Compliant Products?

  • Compliance and Regulatory Adherence:
    Using IEC 62443-4-2 SL2 compliant products helps meet the stringent requirements of directives like NIS2, ensuring your network is legally compliant and aligned with industry best practices.
  • Enhanced Security and Risk Management:
    These products offer robust security features that protect against a wide range of cyber threats, reducing the risk of security incidents and ensuring a safer network environment.
  • Operational Efficiency and Reliability:
    High security standards ensure that network operations remain reliable and efficient, minimizing downtime and optimizing performance.

Would you like to learn more about how Moxa meets the highest standards for protection against malicious attacks? Our experts are happy to answer your questions.

Laurent Liou

Product Marketing Manager

Muhammad Fawwad

Product Marketing Engineer