Industrial NAT Gateway/Firewall

WALL IE - Industrial NAT Gateway
WALL IE - Industrial NAT Gateway
WALL IE - Simple and secure network integration

WALL IE – Industrial NAT Gateway/Firewall

Secure communication and simple addressing – WALL IE protects your automation network against unauthorized access. Due to the individual configuration, the firewall can be easily adapted to the requirements of the respective machine network.

The NAT operating mode serves the forwarding of the data traffic between various IPv4 networks. It enables the address translation via NAT and uses packet filters for the limitation of access to the automation network located behind. 
In the bridge operating mode, WALL IE acts as a layer 2 switch. In contrast with normal switches, however, packet filtering is also possible in this operating mode. This means that the restriction of access to individual areas of your network can be achieved without having to use different networks for this purpose.

  • Low effort for IP integration in higher-level networks (NAT)
  • Integration of series machines with the same IP addresses in the production network
  • NAT (Basic NAT, NAPT und Portforwarding)
  • SNAT: No adjustment of the network configuration in the LAN network necessary
  • Access restriction through packet filters: IPV4 addresses, protocol (TCP/UDP/ICMP), ports, MAC addresses 
  • Reduction of the network load through the filtering of broadcasts and multi-casts
  • Quick and easy configuration via a responsive web interface
  • Easily integrate same IP subnets through port forwarding (NAPT)
  • Reduced to the essential functionality
  • Import and export of the configuration
  • DHCP-Server (LAN) / DHCP-Client (WAN)
  • DNS-Server (LAN)
  • User administration
  • Space-saving industrial design for DIN rail
Download PDF datasheet
General information
Order number 700-860-WAL01
Article name WALL IE
Scope of delivery WALL IE, Quick Start Guide
Dimensions (DxWxH) 32,5 x 58,5 x 76,5 mm
Weight Approx. 130 g
Number of inputs 2 | 24 V (DC), as per DIN EN 61131-2 Type 2
WAN interface
Number 1
Type 10 Base-T/100 Base-T
Connection RJ45 socket
Transmission rate 10/100 Mbps
LAN interface
Number 3
Type 10 Base-T/100 Base-T
Connection RJ45 socket
Transmission rate 10/100 Mbps
Operating modes Bridge, NAT (Basic NAT, NAPT)
Packet filter IPV4 addresses, protocol (TCP/UDP),
ports: “WAN to LAN” and “LAN to WAN” separated,
MAC addresses (black & whitelisting)
Status indicator 4 LEDs, function status
8 LEDs, Ethernet status
Voltage supply 24 V DC, 18–30 V DC
Current draw Max. 250 mA with 24 V DC
Power dissipation Max. 2.4 W
Ambient conditions
Ambient temperature -40 °C ... +75°C
Transport and storage temperature -40 °C … +85 °C
Relative air humidity 95 % r H without condensation
Pollution degree 2
Protection rating IP20
Certifications CE, UL
UL UL 61010-1/UL 61010-2-201
Voltage supply 24 V DC (18 ... 30 V DC, SELV and limited energy circuit)
Pollution degree 2
Altitude Up to 2,000 m
Temperature cable rating 87 °C
RoHS Yes


WALL IE - Industrial ethernet bridge and firewall
WALL IE - Simple and secure network integration

Technical Documentation

 Name Version Size Tags
WALL IE, Manual 7 3 MB WALLIE, Wall IE, Wallie
WALL IE, Quick Start Guide 13 3 MB WALLIE, Wall IE, Wallie
EG Declaration of Confirmity 03-2019 85 KB EG Declaration of Confirmity


 Name Version Size Tags
WALL IE NAT Gateway/Firewall - simple machine integration 03-2021 1 MB WALLIE, Wall IE, Wallie

License Agreements

 Name Version Size Tags
WALL IE, OpenSource licence terms 179 KB WALLIE, Wall IE, Wallie


 Name Version Size Tags
WALL IE, Firmware V1.10.000 8 MB History WALLIE, Wall IE, Wallie
Infrastructure Products, Macros for EPLAN Electric P8* 1 3 MB

Planning Tools

 Name Version Size Tags

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Our products contain, among others, open source software. This software is subject to the applicable licensing conditions. We will send you the appropriate licensing conditions, including a copy of the complete licensing text, together with the product. These are also available in our download area of the respective product under www.helmholz.de. We also offer to send you or any third party the complete source code of the applicable open source software as a DVD upon request for a contribution towards costs of 10.00 Euro. This offer is valid for a period of three years as of the delivery of the product.