Use CasesRemote Access to PLCs
Remote Maintenance & OT Remote Access

Access your
PLCs and HMIs
from anywhere

Integrated zero-trust industrial VPN. Securely connect to your Siemens, Schneider, and Rockwell PLCs, HMIs, and SCADA systems in less than 3 seconds—without opening a single port on your network.

−70%
Travel
< 3s
VPN Connection
0 port
Open on the site side
Eziwan Remote Access Architecture
Technicien
anywhere
HTTPS / TLS
Eziwan
Cloud
OpenVPN/IPSec VPN
Eziwan
Gateway
Private LAN
PLC / HMI
SCADA
No open portsAES-256 EncryptionZero TrustComplete audit log

THE PROBLEM

Your technicians still make house calls for
Just a diagnosis?

For 80% of industrial maintenance tasks, remote access would solve the problem in a matter of minutes. But without the right solution, every alarm triggers a service call.

Expensive travel

200–400€ per service call (technician time + transportation). A fleet of 50 machines can cost more than 200,000€ per year in preventive maintenance visits.

Long response time

In the event of a breakdown, travel time increases the MTTR by several hours. Every minute of machine downtime results in a loss of production.

Inappropriate corporate VPN access

Generic VPN solutions expose the entire network. Access to a PLC should not grant access to the client company's entire IT system.

THE SOLUTION

Industrial remote access,
designed for the OT

Built-in OpenVPN/IPSec VPN

An encrypted tunnel is established in less than 3 seconds, with keys exchanged automatically. No TCP or UDP ports need to be opened on the site side.

Native Zero Trust

Every access attempt is authenticated, authorized, and audited. There is never any split VPN or global network access.

Instant Connection

Tunnel setup time < 3 seconds. Access TIA Portal, Sysmac Studio, or SSH from your usual PC.

Built-in RDP & VNC

Access HMIs, industrial PCs, and SCADA systems via RDP or direct VNC. No third-party software to install.

Granular access by user

Control who can access which equipment, when, and from which IP address. Time-stamped audit log.

Complete audit log

All VPN connections are logged: user, source IP, duration, and target device. CSV/JSON export.

Simultaneous multi-site operations

Manage hundreds of sites from a single dashboard. Multi-tenant VPN connection with complete isolation.

Compatible with all protocols

Modbus TCP, EtherNet/IP, PROFINET, Siemens S7 — everything passes through the VPN tunnel without any special configuration.

USE CASES

Who uses Eziwan remote access?

Maintenance Technicians at Industrial Machinery Manufacturers

Constructeur machine (OEM)

Problem

Every alarm triggers a costly trip to the end customer's site, even for a simple parameter adjustment.

Solution

An Eziwan gateway is pre-installed on every machine delivered. Technicians can connect from the office in 3 seconds. TIA Portal, Sysmac Studio, RSLogix: direct access to the PLC as if they were on site.

Measured results

−70% reduction in unplanned trips
MTTR reduced from 3 hours to 15 minutes
Customer SLA met without on-site commitment
Siemens S7EtherNet/IPModbus TCP
Constructeur machine (OEM)

COMPATIBILITY

Compatible with all PLCs on the market

The Eziwan VPN is network-transparent—it works with any PLC or HMI without requiring any special configuration.

Siemens
S7-300 / S7-400
S7-1200 / S7-1500
LOGO! 8
KTP Panel PC / HMI
Schneider
Modicon M340/M580
Quantum / Premium
SoMachine
Magelis HMI
Rockwell
ControlLogix / CompactLogix
MicroLogix 1100/1400
PanelView HMI
RSLogix 5000
Mitsubishi
MELSEC iQ-R / FX5U
GOT HMI Series
MELSOFT GX Works
CC-Link IE
Omron
NJ / NX Series
CJ2 / CP1H
NA / NB HMI
Sysmac Studio
B&R
X20 / X90 CP
Panel PC 2100
Automation Studio
POWERLINK

Frequently Asked Questions

READY TO ELIMINATE YOUR TRAVEL?

Remote Access to Your First PLC
in less than an hour

Free POC with 2 Eziwan gateways at your actual sites. VPN connection to your PLC starting on day one.

Request a Free POCTechnical Documentation