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An architecture diagram showing how an industrial IoT gateway provides OT security by segmenting the PLC from the IT network and using a secure VPN.

IoT Gateway Security: Why It's Your First Line of OT Defense

Why is iot gateway security so critical? Learn how an industrial iot gateway acts as a firewall, protecting your PLCs and OT security from ransomware....

Robert Liao
A diagram comparing simple 'checkbox' iot gateway security to the certified, professional security of an IEC 62443 compliant IoT Gateway.

IEC 62443 and the IoT Gateway: A Non-Negotiable Security Standard

Why is IEC 62443 a must-have for an industrial iot gateway? Learn how this standard ensures your IoT Gateway is secure by design. ...

Robert Liao
A spec comparison graphic showing the EG5120 IoT Gateway's quad-core CPU, 2GB RAM, and NPU vs. the EG5100's single-core CPU and 512MB RAM.

Choosing a Robustel IoT Gateway: EG5120 vs. EG5100 Head-to-Head

Comparing EG5120 vs EG5100? This IoT Gateway head-to-head breaks down the real-world differences in CPU, RAM, AI (NPU), and TCO. Choose the right IoT Gateway....

Robert Liao
A hierarchy graphic comparing DIY, low-cost (Teltonika), and professional (Robustel) IoT Gateway solutions, highlighting Robustel as the best industrial alternative.

Teltonika IoT Gateway Alternative: When Reliability Beats Just "Low Price"

Need a Teltonika IoT Gateway alternative? See how Robustel's IoT Gateway line compares on industrial reliability, security (IEC 62443), and TCO. ...

Robert Liao
A diagram comparing the complex Advantech IoT Gateway ecosystem to the simple, direct path of a Robustel IoT Gateway as an advantech alternative.

An Advantech IoT Gateway Alternative: A Robustel Comparison

Need an Advantech IoT Gateway alternative? See how Robustel's open (Debian/Docker) IoT Gateway and integrated RCMS platform compare to Advantech's WISE. ...

Robert Liao
A Venn diagram comparing Ewon (remote access) and a generic IoT Gateway (data), showing Robustel as the hms ewon alternative that does both.

HMS Ewon IoT Gateway Alternative: A Better Solution for Remote Access?

Need an HMS Ewon alternative? See how a Robustel IoT Gateway with RobustVPN & RCMS compares to Ewon Talk2M for secure PLC remote access and...

Robert Liao
A fork in the road showing the choice between a proprietary Moxa IoT Gateway and an open-standard Robustel IoT Gateway as a Moxa alternative.

Looking for a Moxa IoT Gateway Alternative? A High-Value Comparison

Looking for a Moxa IoT Gateway alternative? See how Robustel's IoT Gateway line (EG-series) compares on openness (Docker/Debian), cloud (RCMS), & TCO. ...

Robert Liao
A comparison showing a messy DIY raspberry pi iot gateway versus a clean, integrated professional industrial IoT gateway with eMMC and RS485.

DIY vs. Professional IoT Gateway: Can a Raspberry Pi Really Survive Industry?

A diy iot gateway with a Raspberry Pi seems cheap. But can it replace a professional IoT Gateway? We compare TCO, reliability (SD card!), and...

Robert Liao
A diagram showing the Docker on an IoT Gateway metaphor, where code (Python, Node.js) is packaged in a container and deployed portably onto an IoT Gateway.

Docker on an IoT Gateway: Why Containers are the Future of Edge Computing

Why run Docker on an IoT Gateway? Learn how containers on an IoT Gateway provide security, portability, & flexibility for edge computing apps. ...

Robert Liao
A comparison of a Raspberry Pi (SD card, consumer temp) and an industrial IoT gateway (eMMC, wide temp), part of an IoT gateway buyer's guide.

The 2026 IoT Gateway Buyer's Guide: 5 Common Pits to Avoid

Our 2026 IoT Gateway buyer's guide. Avoid these 5 common pits: ignoring TCO, vendor lock-in, and bad security when choosing your industrial IoT gateway. ...

Robert Liao
A diagram explaining the MQTT publish/subscribe model, showing an IoT gateway (publisher) sending data to an MQTT broker, which then distributes it to subscribers.

MQTT and the IoT Gateway: The Perfect Pair for IIoT Communication

Why is MQTT the standard for IIoT? Learn how an IoT Gateway uses MQTT's pub/sub model for efficient, reliable data from PLCs (Modbus) to the...

Robert Liao
Architecture showing an IoT Gateway acting as an OPC UA server, polling legacy Modbus/S7 devices and providing a single, modern OPC UA interface for SCADA/MES.

OPC UA and the IoT Gateway: Bridging the IT/OT Divide with a Standard Protocol

OPC UA is the standard for industrial data. See how an IoT Gateway acts as a secure OPC UA gateway, bridging the IT/OT divide by...

Robert Liao
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