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Unidirectional Security Gateway for IT and OT


NetWall USG provides access to real-time OT data and enables secure data transfer to the OT environment without compromising the security and integrity of your critical production systems.

NetWall USG delivers:

Lossless, unidirectional data communications

  • Isolates OT/ICS assets against cyber attacks

  • Prevents malicious C&C communications from the OT network

  • Segments and protects networks, devices, historians, SCADA, DCS, HMIs, and PLCs

Seamless integration with OPSWAT MetaDefender Kiosk and Vault

  • Secure transfer of software updates and other files to the protected domain

Scalable Industrial Cybersecurity

OPSWAT NetWall USG comprises two 1U server appliances with a non-networked serial connection between them

No Data Loss

Delivery assurance mechanism assures reliable operation and conserves valuable bandwidth.


Easy to Deploy

Preconfigured platform deploys quickly and seamlessly.


Enables Regulatory Compliance

Supports compliance with Industrial Cybersecurity standards. Protects against Industrial attack techniques outlined by MITRE ATT&CK for ICS.

No Overrun

Anti-overrun mechanism eliminates data overflow, retransmissions, and sync issues.


Highly Scalable

Choose 50Mbit, 100Mbit, 1Gbit or 10Gbit throughput — all software is selectable to meet current and future requirements.


Transparent to Users

Fast and high-fidelity data replication means there is no need to alter work procedures of corporate users.

No Return Path

A non-networked serial connection between the NetWall USG server pair enforces one-way data flows.


Simple to Operate

Ready for use in minutes after one-time initial setup. No firewall audit or configuration needed.


Full Support for Industrial Protocols

Includes OPC DA, A&E, and UA, plus Modbus/TCP, file transfers, and TCP/UDP sockets.

netwall diagram 2
Netwall diagram