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A graphic comparing an uncertified edge router to a Robustel edge router that is IEC 62443 certified, highlighting the proof of ot security.

The Secure Edge Router: Your First Line of Defense for IoT and OT Networks

Why is a secure edge router vital for ot security? Learn how an edge router acts as a firewall and VPN to protect your IoT...

Robert Liao
An architecture diagram showing how a secure edge router uses a firewall and VPN to protect an OT network, enabling safe OT/IT connectivity.

Why Your Business Needs an Edge Router for Secure OT/IT Connectivity

Need to connect your factory (OT) to your IT network? Learn why a secure edge router with a firewall & VPN is the essential bridge...

Robert Liao
A diagram showing how a modern edge router combines the functions of a router, a firewall, and a VPN endpoint into one device.

Edge Router vs. Firewall: Understanding Key Security Roles at the Edge

Edge router vs firewall: Are they the same? Learn how a modern edge routeris a stateful firewall, and why this edge router security is vital...

Robert Liao
A diagram comparing an edge router, which handles Layer 3 IP packets, to an IoT Gateway, which translates Layer 7 application data like Modbus.

Edge Router vs. IoT Gateway: Are They the Same Thing?

Edge router vs IoT gateway: Are they the same? Learn the key difference. An edge router connects networks (L3); an IoT gateway translates protocols (L7)....

Robert Liao
A diagram showing the role of an edge router, acting as a secure border guard with a firewall and VPN between the trusted LAN and the untrusted WAN/Internet.

What Is an Edge Router? (And How Is It Different from a Core Router?)

What is an edge router and how does it differ from a core router? Learn the key functions of an edge router (security, WAN access)...

Robert Liao
A diagram showing the role of an edge router, acting as a secure border guard between the trusted internal LAN and the untrusted external WAN/Internet.

The Ultimate Guide to the Edge Router: Role, Features & Selection in 2025

What is an edge router? Our 2025 guide defines its role connecting your LAN to the WAN, edge router security features (VPN/Firewall), and how to...

Robert Liao
A diagram showing how a 5G IoT Gateway provides one seamless cellular network for an AGV, eliminating Wi-Fi roaming and dead zones.

Case Study: How a 5G IoT Gateway Connects AGV/AMR Fleets in the Factory

Wi-Fi failing your AGV fleet? This case study shows how a 5g iot gateway (Robustel R5020 Lite) provides low-latency agv connectivity to slash downtime. ...

Robert Liao
An architecture diagram showing how a single IoT Gateway for solar monitoring connects to both Modbus inverters and CAN BESS, sending data to the cloud via 4G.

Case Study: Connecting Solar & BESS with an IoT Gateway for Energy Monitoring

Need solar monitoring? This case study shows how an industrial IoT gateway connects inverters (Modbus) & BESS (CAN) to the cloud for reliable data. ...

Robert Liao
An architecture diagram showing how an IoT Gateway connects to a pump's Modbus and I/O, sending data to SCADA and being managed by RCMS.

Case Study: Smart Water Management Using an IoT Gateway for Pump Monitoring

Need smart water management? This case study shows how an industrial IoT gateway enables remote pump monitoring, cutting downtime and service calls. See how an...

Robert Liao
A diagram showing how an offline EV charger makes no money, while an IoT Gateway-connected charger maximizes revenue.

Case Study: The Role of an IoT Gateway in EV Charging Management

See how an industrial IoT gateway enables smart EV charging management. This case study shows how an IoT Gateway connects OCPP chargers to the cloud....

Robert Liao
An architecture diagram showing how a single edge gateway for CNC enables both CNC data collection (OEE) and secure remote access for engineers.

Case Study: How an IoT Gateway Enables CNC Remote Monitoring & Data Acquisition

See how an industrial IoT gateway enables CNC remote monitoring and data collection. This case study shows how an IoT Gateway cuts downtime and saves...

Robert Liao
A TCO comparison showing how a PLC remote access IoT Gateway and RCMS (RobustVPN) replaces a $5,000 truck roll, helping a machine builder cut service costs.

Case Study: Cutting Service Costs with an IoT Gateway for PLC Remote Access

Need plc remote access to cut service costs? This case study shows how an IoT Gateway with RCMS (RobustVPN) slashes truck rolls and saves money...

Robert Liao
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