Reinforce Your Cybersecurity with Moxa’s Secure OnCell G4300-LTE4 Cellular Router
November 20, 2025
The cellular routers from the Moxa OnCell G4300-LTE4 Series are engineered to deliver dependable communications and outstanding cybersecurity in demanding industrial environments. With an industrial-grade build and Moxa’s exclusive GuaranLink cellular auto-recovery technology, these routers ensure stable and continuous communication for critical operations, even under harsh conditions. The OnCell G4300-LTE4 Series integrates multiple security mechanisms, including secure boot, VPN, NAT, firewall, and Deep Packet Inspection (DPI), to fully protect endpoints and data against the fast-changing cyber-threat landscape.
In addition, the OnCell G4300-LTE4 Series features Moxa Remote Connect (MRC), a secure, cloud-based platform that makes it easy for centralized monitoring and remote access to field devices. This feature helps improve management efficiency and streamline maintenance.
In addition, the OnCell G4300-LTE4 Series supports Moxa Remote Connect (MRC), a secure cloud-based solution for centralized monitoring and remote access to field devices, boosting management and maintenance efficiency.
Guaranteed Reliable Cellular Links With GuaranLink
Consistent cellular connectivity is always a challenge in industrial applications, especially for mission-critical operations such as the remote monitoring of power systems, oil pipelines, and intelligent traffic control. Moxa’s OnCell routers come with GuaranLink, a specialized cellular link auto-recovery mechanism designed to deliver stable, seamless, and reliable network performance. By using GuaranLink, users experience maximized uptime, minimized data loss, and less on-site maintenance, all of which provide uninterrupted service for vital applications
Build a Cybersecurity Shield for Your Critical Applications
Secure Remote Maintenance With MRC
The Moxa Remote Connect (MRC) service offers an easy-to-use, secure, cloud-based option for remote maintenance and access. The OnCell G4300-LTE4 Series acts as an MRC gateway that enables safe remote monitoring of end devices connected to the same local area network (LAN) using the MRC server and OnCell routers in service. MRC implements multiple access control methods to safeguard assets, data, and remote operations. With MRC, engineers can perform maintenance and troubleshooting remotely, ensuring continuous operation across distributed environments.
Monitor Your Network Connections in Distributed Environments
Visualize the health and connectivity of all deployed routers and linked devices through the MRC cloud platform in real time.
Remotely Control Devices to Ensure Uninterrupted Connections
Securely access OnCell G4300-LTE4 Series routers and LAN-connected devices via the MRC Client on your PC for instant diagnostics and remote troubleshooting.
Flexible and Secure Third-party Maintenance
Group-based access management enables administrators to assign user roles, time-based permissions, and protocol restrictions for safe and efficient third-party maintenance.
Empower Your Applications
Smart Grid
Secure Wireless Solutions for Distributed FTU/FRTU Networks
The OnCell G4302-LTE4 Series cellular routers offer high-speed performance and reliable communication between FTUs and FRTUs at substations. Embedded security features also help protect substation equipment against potential cyberthreats.
System Requirements
- High reliability for substations
- Cybersecurity protection built-in
- Dual connectivity: Cellular + Ethernet
Why Moxa
- GuaranLink and WAN redundancy between cellular and Ethernet for quick connection recovery to ensure seamless cellular connectivity
- Embedded cybersecurity features such as firewall, DPI, NAT, and VPN to protect substation devices against cyberattacks
- Industrial-grade design with a wide temperature range, EMC-hardened circuitry, and power protection for harsh environments
BESS
Speed Up BESS Deployments With Secure and Reliable Connectivity
For remote or difficult-to-wire commercial and industrial battery energy storage system (C&I BESS) deployments, LTE networks help lower cabling costs and streamline installation efforts. By combining a cellular router, firewall, and switch, the OnCell G4308-LTE4 Series not only meets these critical connectivity needs, but also saves more than 50% on power consumption.
System Requirements
- Global-ready cellular router to enable secure and stable connectivity with deployment flexibility
- Securely connect critical subsystems while preventing unauthorized access and cross-device threats
- Remote support for distributed, unmanned C&I BESS sites to minimize field service costs and ensure service reliability
Why Moxa
- Global model that complies with regional requirements to simplify worldwide deployments
- GuaranLink auto-recovery ensures seamless and reliable connectivity
- DPI and VLAN to prevent unauthorized access to the network
- MRC provides centralized management and monitoring of globally distributed devices, group management, and secure remote access
EVI
Reliable Wireless for Resilient AC EV Charging Infrastructure
The OnCell G4302-LTE4 Series secure cellular routers are ideal for transmitting collected data to the charging infrastructure owner’s cloud platform and remote system management.
System Requirements
- Highly reliable and stable network to prevent charging service downtime
- Robust equipment that can withstand extreme weather conditions and challenging outdoor factors
- Simple and secure remote access for diagnostics and troubleshooting
Why Moxa
- GuaranLink and WAN redundancy between cellular and Ethernet for quick connection recovery to ensure seamless cellular connectivity
- Rugged and compact design suitable for harsh environments
- Supports the MRC (Moxa Remote Connect) service for remote maintenance, reducing on-site visits
Manufacturing
Enabling Secure and Seamless Operational Expansions
Expanding operations with new factories requires seamless and secure connectivity infrastructure. The OnCell G4308-LTE4 Series is equipped to fulfill both current and future requirements.
System Requirements
- Secure network architecture to make legacy OT equipment compliant with the latest cybersecurity requirements
- Future service scalability to avoid costly hardware upgrades or major network redesigns
- Secure remote maintenance while protecting critical systems from unauthorized access
Why Moxa
- Provides virtual patching through DPI by blocking harmful OT commands at the network level
- 8 ports for future expansion and high bandwidth to handle multiple devices simultaneously
- MRC enables remote maintenance with role-, time-, and protocol-based restrictions for secure third-party access
Oil & Gas
Real-time Monitoring of Oil Pipeline Systems
The OnCell G4302-LTE4 Series secure cellular routers monitor pressures in oil pipes and control the oil inlet valves to maintain safe pressure levels.
System Requirements
- Reliable cellular communication for remote oil-pipeline monitoring and control
- Explosion-proof equipment suitable for deployment in environments with combustible dust and gases
- Strong cybersecurity measures to prevent cyberattacks on critical pipelines
Why Moxa
- Redundancy features including dual-SIM failover, GuaranLink’s link-loss detection, and auto-recovery for reliable, uninterrupted connectivity
- IECEx, ATEX, and CID2 certified devices to ensure safe operation in harsh and hazardous environments
- Industrial-grade security features including secure boot, stateful firewall, DoS protection, and DPI
Transportation
Accurate Data Acquisition for Intelligent Transportation Systems
The industrial-grade OnCell G4302-LTE4 Series secure cellular routers are certified for E1 eMARK and NEMA TS2. This makes these routers ideal for specialized transportation applications, such as distributed traffic light control.
System Requirements
- Equipment to integrate legacy serial controllers with SCATS traffic signal systems for real-time traffic control
- Reliable operation in outdoor environments with high temperatures, vibration, and electrical noise
- Centralized monitoring and secure remote maintenance capabilities for distributed intersection
Why Moxa
- Supports serial interfaces and an embedded SCATS protocol for seamless SCATS integration
- Certified for the NEMA TS2 and E1 eMARK industrial standards to withstand extreme temperatures and roadside vibration
- Supports Moxa Remote Connect (MRC) cloud VPN to provide zero-trust remote diagnostics without the need for on-site visit
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