Implementing Secure Communications and Centralized Management across Multiple Networks

Neteon

September 23, 2024

Build a Secure, Reliable Industrial Network with Cellular Technology

In the era of the Industrial Internet of Things (IIoT), the efficiency and productivity of industrial operations depend on secure, reliable communication across networks. For large-scale, multi-site operations, deploying cellular network technologyis key to enabling seamless, centralized network management and scalability. But how can you ensure your industrial network is robust enough to support these critical applications? Here are four major considerations to help you build a secure, reliable industrial network using cellular technology.

1. Reliable Cellular Connectivity for 24/7 Operations

To ensure the uninterrupted operation of IIoT applications, you need highly reliable network connectivity. Any disruption can lead to costly production downtime, loss of critical process information, or even endanger lives and property. The solution is to deploy industrial-grade cellular devices that support advanced redundancy and ensure stable, high-speed communication across your networks. Key features of reliable cellular connectivity include:

Dual-SIM backup and connection recovery to maintain uninterrupted communication, even during network failures
Power and RF isolation for enhanced protection in power-critical environments
Dual power inputs to ensure redundancy and uninterrupted operation
Wide temperature range (-30 to 70°C) for use in harsh industrial environments
Rugged hardware design suitable for hazardous locations, compliant with ATEX Zone 2 and IECEx certifications

These features enable continuous operations, even in the most challenging conditions.

2. Secure Remote Communication with OpenVPN

As industrial networks expand, equipment and devices located in remote, hard-to-reach areas—such as oil rigs or marine vessels—must communicate securely with central control systems. In such scenarios, cellular networks combined with OpenVPN technology provide secure, seamless connectivity.

OpenVPN offers secure site-to-siteand control-to-site communication, ensuring data integrity and protection from cyberattacks. For instance, in a city-wide vehicle-sharing system, LTE cellular gateways with OpenVPNbridge mode allow different sites to use the same subnet, facilitating easy network management and expansion while maintaining robust security. This configuration ensures seamless communication between remote devices and control centers, protecting sensitive data from cyber threats.

3. Industrial Network Security

Security is a top concern as IIoT applications connect more devices to public networks, making them vulnerable to cyberattacks. To secure your network, consider implementing strict user access controls, role-based authentication, and compliance with cybersecurity standards like IEC 62443-4-2.

Protecting against unauthorized access requires multi-level authentication, secure data transmission, and thorough event logging. Devices must also be organized into groups with controlled access privileges, ensuring that only authorized personnel can interact with critical systems. Striking the right balance between accessibility and security is key to ensuring smooth, protected operations in an IIoT environment.

4. Smart Central Management

For large-scale operations spread across multiple locations, efficient network management is crucial. A smart cellular network management tool enables fast deployment, remote monitoring, and real-time troubleshooting of cellular devices. Essential capabilities include:

Mass configuration for quick deployment and firmware updates
Dashboards for real-time monitoring of network status
Historical RSSI data for performance analysis
RESTful APIs for cross-platform monitoring
Remote management tools, such as SMS control commands for device rebooting, firmware upgrades, and data connection initiation
Advanced security features like IP blocking and support for OpenVPN

By leveraging these tools, network administrators can ensure their systems run efficiently, minimizing downtime and improving operational resilience.

Efficient Event and Device Management

Industrial operators need smart troubleshooting tools to maximize network uptime. Event alerts via SMS, email, or SNMP traps ensure that issues are detected and addressed promptly. Additionally, dashboards and event logs provide visibility into device status, such as power and network connections, helping administrators make informed decisions. Remote management tools, including SMS commands to reboot devices or update firmware, allow quick responses to issues, especially for devices in hard-to-reach locations.

Moxa’s OnCell G3150A-LTE: A Complete Cellular Solution

To meet these challenges, Moxa’s OnCell G3150A-LTE series offers high-speed LTE cellular gateways designed for secure, reliable connectivity in industrial applications. These devices come with: