ABB SNAT603CNT
ABB SNAT603CNT
ABB SNAT603CNT
ABB SNAT603CNT
ABB SNAT603CNT

ABB SNAT603CNT | Network Address Translator Module

  • Brand:​ ABB
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    Model:​ SNAT603CNT
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    Product Type:​ Network Address Translator (NAT) / Security Module
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    Series:​ Industrial Network Security
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    Core Function:​ Provides network address translation, port forwarding, and basic firewall capabilities for securing industrial control system networks.
  • ••
    Key Specs:​ Dual Ethernet ports, NAT functionality, industrial hardening.
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Part number: ABB SNAT603CNT
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Description

SNAT603CNT: Product Overview
The SNAT603CNT is a Network Address Translator (NAT) module designed for industrial control system networks within ABB’s automation product portfolio. This device functions as a network security component that creates a boundary between different network zones, typically separating the process control network (Level 1/2) from higher-level enterprise or plant networks (Level 3/4). Installed between network segments, its primary role is to provide controlled communication while implementing security through obscurity by hiding internal network addresses from external networks.
The module operates at the network layer (Layer 3) of the OSI model, examining IP packets and modifying source/destination addresses as they pass between interfaces. This allows devices on internal subnets with private IP addresses to communicate with external networks while preventing unsolicited inbound connections. The device includes basic firewall capabilities such as port forwarding, static routing, and access control lists, enabling engineers to create specific pathways for authorized traffic while blocking all other communication attempts.

ABB SNAT603CNT

ABB SNAT603CNT

SNAT603CNT: Technical Specifications
  • ••
    Model Number:​ SNAT603CNT
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    Manufacturer:​ ABB
  • ••
    Product Type:​ Network Address Translator (NAT) / Security Module
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    Ethernet Ports:​ 2 or more RJ-45 ports (10/100 Mbps)
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    Network Functions:​ Network Address Translation (NAT), Port Forwarding, Static Routing
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    Security Features:​ Basic firewall capabilities, access control lists
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    Power Supply:​ 24V DC (typical for industrial devices)
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    Operating Temperature:​ -40°C to +70°C (industrial temperature range)
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    Mounting:​ DIN-rail mounting
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    Certifications:​ UL, CE, ATEX (for hazardous locations)
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    Protocol Support:​ TCP/IP, UDP, ICMP

    ABB SNAT603CNT

    ABB SNAT603CNT

Core Features & Customer Value
The primary security value of this NAT module is segmenting the control network from other plant networks, creating a buffer zone that prevents direct access to critical control devices. For control engineers and network administrators, this means that programmable logic controllers (PLCs), distributed control systems (DCS), and other sensitive equipment can operate on private address space that is not directly accessible from corporate networks or the internet. This significantly reduces the attack surface and contains potential network breaches.
The port forwarding capability allows selective communication for necessary services such as HMI data collection, historian connections, or remote maintenance access, while blocking all other unsolicited traffic. This enables operational technology (OT) and information technology (IT) convergence while maintaining security boundaries. The industrial hardening (-40°C to +70°C operating temperature, DIN-rail mounting) ensures reliable operation in harsh plant environments where commercial networking equipment would fail.
Typical Applications
In a SCADA system for water treatment plants, the SNAT603CNT is deployed between the control network containing RTUs and PLCs, and the corporate network where the SCADA servers are located. The NAT configuration allows historians and HMIs to poll data from control devices while preventing direct access to the control network from unauthorized sources.
In manufacturing facilities, the module creates a DMZ (Demilitarized Zone) between the shop floor network containing robots and CNCs, and the plant network where MES systems reside. This enables production data collection for monitoring and optimization while protecting production equipment from network-based threats originating from business systems.

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