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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.

All (290)MODBUS (36)MQTT (29)CIP (24)IEC 61850 (21)DNP3 (18)OPC UA (18)OT SECURITY (13)ICCP (11)IEC 104 (11)PROFINET (9)IEC 62443 (8)PROFIBUS (8)SCADA (7)ISO 27001 (6)BLOG (5)CAN (5)IEC 101 (5)PRP (5)HSR (4)ICS SECURITY (4)RS 485 (4)RS 232 (3)ADMS (2)AMQP (2)CANOPEN (2)OPENVPN (2)PROFISAFE (2)PYTHON (2)ARDUINO (1)BRP (1)DLR (1)DMS (1)EMS (1)ETHERCAT (1)FTP (1)HART (1)IEC 103 (1)IEC 60870 (1)ISMS (1)MITRE ATTACK (1)MQTT SPARKPLUGB (1)MRP (1)NERC CIP (1)NETWORK SECURITY (1)RABBITMQ (1)RRP (1)RSTP (1)S7COMM (1)SSH (1)TLS (1)VULNERABILITY MGMT (1)ZERO TRUST (1)
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Showing 1–15 of 15 articles
BLOG

Industrial Dashboard Software: 6 Tools Compared

Industrial dashboard software compared: Grafana, PI Vision, Canary Axiom, Node-RED, FUXA and ThingsBoard, with protocol reach, cost and where each one fits.

Jul 31, 202616
BLOG

SCADA as a Service Explained: Cloud SCADA for Utilities

SCADA as a Service explained: what SaaS means for grid control systems, which functions can move to the cloud, and which have to stay on the plant floor.

Jul 28, 202612
BLOG

What Is a Communication Protocol? Rules, Types, Examples

Communication protocol basics: what it is, how services and protocols differ, how a message moves layer by layer, and the main types used in IT and industry.

Jul 27, 202613
BLOG

SCADA and ICS: The Difference and How They Fit Together

SCADA and ICS are not the same thing: SCADA is one type of ICS. See how SCADA, DCS, and PLC systems fit inside ICS and OT, per NIST and IEC definitions.

Jul 11, 202616
BLOG

SCADA Security: Complete Guide to Protecting Control Systems

Learn how to secure SCADA systems from cyber threats. Covers network segmentation, remote access, IEC 62443 zones, real attacks, and a practical checklist.

Apr 7, 202615
BLOG

What is SCADA? How It Works, Components & Architecture

SCADA stands for Supervisory Control and Data Acquisition, a system used to monitor, control, and manage industrial processes in real-time.

Mar 26, 202639
BLOG

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.

Mar 13, 20264
BLOG

SCADA Network Architecture Design Guide for Substations & Industry

Learn how to design a secure and reliable SCADA network architecture for substations and industrial systems with redundancy and cybersecurity best practices.

Feb 16, 20264
BLOG

Distribution Management System (DMS): Functions, Architecture, Benefits & Standards

Learn what a Distribution Management System (DMS) is, how it works, its functions, architecture, benefits, and the role of IEC 61968 and CIM standards.

Jan 19, 20266
BLOG

Port 22 (SSH): What It Is, How to Change and Secure It

Port 22 is the default TCP port for SSH. What runs on it, why SSH uses 22, how to change it, firewall rules, testing commands, and how to secure it.

Jan 10, 202612
CYBERSECURITY

IACS Cybersecurity – Protecting SCADA and Industrial Control Systems

IACS Cybersecurity focuses on protecting Industrial Automation and Control Systems (IACS) such as SCADA, PLCs, RTUs, DCS, IEDs, and industrial networks from cyber threats while ensuring safety, availability, and operational reliability.

Jan 5, 20264
BLOG

Best Free SCADA Software in 2026: 12 Open-Source and Free Platforms Compared

Compare 12 free SCADA software platforms for 2026. Covers Rapid SCADA, SCADA-LTS, JSON-SCADA, Ignition, and more with protocols, tag limits, and download links.

Dec 13, 20259
CYBERSECURITY

SCADA Networking: Site-to-Site VPN vs NAT on Private APN Explained

Site-to-site VPN vs NAT on private APN explained in simple terms. Learn why VPNs give reliable SCADA communication and why NAT often causes connection issues.

Dec 10, 20258
BLOG

How to Monitor SCADA Protocol Traffic (Modbus RTU/TCP, IEC-104, DNP3, IEC-61850)

Learn how to monitor Modbus, IEC-104, DNP3, and IEC 61850 traffic. Capture and analyze SCADA communication over serial and TCP/IP for reliable system performance.

Nov 15, 202510
BLOG

Zero-Trust Architecture for SCADA — Securing IEC 60870-5-104 Systems

Adopt Zero-Trust Architecture for SCADA and IEC 60870-5-104 systems to secure networks, authenticate devices, and prevent insider and external threats.

Oct 30, 20254
SCADA Protocols

Practical guides, free decoders, and tools for SCADA and industrial protocols, including DNP3, IEC 60870-5, IEC 61850, Modbus, OPC UA, MQTT, and more.

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Protocol and vendor names are trademarks of their respective owners. Content is for educational reference only.