300+ SCADA Protocol Articles & Guides
Deep dives on Modbus, DNP3, IEC 60870-5-101/104, IEC 61850, OPC UA, Profinet, MQTT, IEC 62443, and substation automation — written for practicing engineers.
OPC UA Services Explained: The Complete Guide to All 10 Service Sets
All 10 OPC UA service sets explained: Discovery, SecureChannel, Session, Browse, Read, Write, Subscribe, and more. Every service with real-world examples.
Free OPC UA Client: 6 Tools Compared and Tested
Free OPC UA client tools compared: UaExpert, Prosys, Softing, and open-source options, plus how to fix the certificate errors that block your first connection.
OPC UA Address Space and Information Modeling Explained
Learn how the OPC UA address space works. Understand nodes, references, types, namespaces, and information modeling with practical examples and tips.
OPC UA Architecture Explained: Complete IEC 62541 Architecture Guide
Learn how OPC UA architecture works based on the IEC 62541 standard. Explore layers, services, address space, communication stack, and security in industrial automation systems.
ICS Network Architecture Explained: Purdue Model Guide
Learn how the Purdue Model organizes ICS network architecture and helps secure industrial control systems using layered cybersecurity design.
ICS Risk Assessment Methodology (Industrial Cybersecurity Guide)
Learn how to perform ICS risk assessment to identify threats, vulnerabilities, and cybersecurity risks in industrial control systems.
Industrial Asset Classification for Cybersecurity in ICS
Learn how industrial asset classification improves cybersecurity by identifying and prioritizing critical systems in industrial control environments.
ISO/IEC 27001 Clauses Explained (Clause 4-10 ISMS Requirements Guide)
Learn how ISO/IEC 27001 clauses 4-10 define the core requirements for implementing an Information Security Management System (ISMS).
What Is OPC UA Protocol? Architecture, Security, Address Space and IEC 62541 Guide
Learn the OPC UA protocol (IEC 62541) including architecture, security model, address space, services, data access, alarms, and industrial applications in SCADA and IIoT.
What Is an Industrial Control System (ICS)?
Learn what an Industrial Control System (ICS) is, how it works, and why securing ICS is critical for modern industrial infrastructure.
CIP Protocol Ports: How EtherNet/IP Uses Ports 44818 and 2222
CIP Protocol Ports explained: learn how EtherNet/IP uses ports 44818 and 2222 to transport CIP messages for configuration, diagnostics, and real-time I/O communication.
Countermeasures in Industrial Control Systems (ICS Security Guide)
Learn how cybersecurity countermeasures protect industrial control systems using layered security strategies and defense-in-depth principles.
Vulnerability vs Threat in ICS: Understanding Industrial Cybersecurity Risks
Learn the difference between threats and vulnerabilities in industrial control systems and how they impact cybersecurity risk in ICS environments.
IEC 62443-2-1 Requirements Checklist for ICS Cybersecurity
IEC 62443-2-1 checklist for implementing a Cyber Security Management System (CSMS) in industrial control systems and OT environments.
How to Implement IEC 62443-2-1 Step-by-Step (CSMS Implementation Guide)
Learn how to implement IEC 62443-2-1 and build a Cyber Security Management System (CSMS) to protect industrial control systems and OT environments.
Patch Management in Industrial Control Systems (ICS) - IEC 62443 Guide
Learn how patch management protects industrial control systems and supports IEC 62443 system integrity requirements for ICS cybersecurity.
Foundational Requirements (FR1–FR7) in IEC 62443
The Foundational Requirements (FRs) are a core concept in IEC 62443-3-3, which defines cybersecurity requirements for industrial automation and control systems (IACS).
IT vs OT Security: Why Industrial Networks Are Different
Learn the key differences between IT and OT security and why industrial control systems require specialized cybersecurity strategies.