The NAT Gateway

With mbNETFIX, MB connect line presents a new industrial firewall for the automation engineer. It offers protection against attacks by segmenting the production network into manageable and logically separated sections with the help of the industrial firewall.


OT Programming Workflow

The user interface is modelled on PLC programming software. You create a project and upload it to the device. You can make changes during runtime or work offline and upload the changes after completion.

Easy IT-Integration

Configure the device quickly and easily – even without extended IT expertise. mbNETFIX works either as a “gateway” or “bridge” and secures both new and existing network structures.

Integrated Learning Mode

The built-in self-learning function simplifies implementation and supports the user graphically in setting up packet filters and other security mechanisms.

NAT Gateway

Simplify the installation of new devices and isolate the IP address circle of the internal network to avoid conflicts with other devices already installed in the production network.

Secure Machine Network

By isolating the machine network, you protect your components in case of an unauthorized access attempt.

Secure Legacy Systems

Control and filter access to old systems and obsolete components. Without changing the addresses or changing the network topology.

remarkable Features



Free Programming Software


Graphical User Interface

Learning mode

RSA key security

Command Line Interface


Security by Design

Need more information?


mbNETFIX Manager Lite Software with the unique MapView – This graphical surface shows the user at a glance which connections are currently configured in the firewall and which network participants were detected. 


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Product versions

Type Item no. WAN LAN
NFH100 1x 3x


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As an expert for secure remote access, IIoT and industrial security, we are committed to the highest standards in cyber security and the protection of industrial control systems.

With certifications such as IEC 62443-4-1, we are demonstrating a strong commitment to quality, security and trust in our development processes and products.

for more than 25 years.