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 number700-860-WAL01
Article nameWALL IE
Scope of deliveryWALL IE, Quick Start Guide
Dimensions (DxWxH)32,5 x 58,5 x 76,5 mm
WeightApprox. 130 g
Number of inputs2 | 24 V (DC), as per DIN EN 61131-2 Type 2
WAN interface
Type10 Base-T/100 Base-T
ConnectionRJ45 socket
Transmission rate10/100 Mbps
LAN interface
Type10 Base-T/100 Base-T
ConnectionRJ45 socket
Transmission rate10/100 Mbps
Operating modesBridge, NAT (Basic NAT, NAPT)
Packet filterIPV4 addresses, protocol (TCP/UDP),
ports: “WAN to LAN” and “LAN to WAN” separated,
MAC addresses (black & whitelisting)
Status indicator4 LEDs, function status
8 LEDs, Ethernet status
Voltage supply24 V DC, 18–30 V DC
Current drawMax. 250 mA with 24 V DC
Power dissipationMax. 2.4 W
Ambient conditions
Ambient temperature-40 °C ... +75°C
Transport and storage temperature-40 °C … +85 °C
Relative air humidity95 % r H without condensation
Pollution degree2
Protection ratingIP20
CertificationsCE, UL
ULUL 61010-1/UL 61010-2-201
Pollution degree2
Voltage supply24 V DC (18 ... 30 V DC, SELV and limited energy circuit)
AltitudeUp to 2,000 m
Temperature cable rating87 °C


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

Technical Documentation

WALL IE, Manual 8 2 MBWALLIE, Wall IE, Wallie
WALL IE, Quick Start Guide 13 3 MBWALLIE, Wall IE, Wallie
EG Declaration of Confirmity 03-2019 86 KBEG Declaration of Confirmity


WALL IE NAT Gateway/Firewall - simple machine integration 03-2021 1 MBWALLIE, Wall IE, Wallie

License Agreements

WALL IE, OpenSource licence terms 179 KBWALLIE, Wall IE, Wallie


WALL IE, Firmware V1.10.100 8 MB History WALLIE, Wall IE, Wallie
Infrastructure Products, Macros for EPLAN Electric P8* 1 3 MB

Planning Tools


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.