Line 04 — OT Cybersecurity
Industrial network
security.
We assess OT architecture, segment IT/OT traffic and implement security policies adapted to the industrial environment.
Context
Why OT security matters
Industrial control systems were designed for availability, not security. Connecting them to the IT network or to the internet creates attack surfaces that legacy equipment is not prepared to handle.
We do not sell cybersecurity products. We apply architecture and segmentation principles that limit exposure, using the equipment and protocols already present in the client's network.
The INDAS Tech approach
We start with a real assessment of the existing OT network. We identify critical points, propose measures proportional to the risk and implement step by step. We do not sell universal solutions — every industrial network is different.
Services
What we can do for you
🔍
OT architecture assessment
Network topology analysis, identification of exposed equipment, evaluation of data flows and access points.
🧱
IT/OT network segmentation
Creating security zones and conduits. Separating production traffic from office traffic.
🔒
Secure remote access
Implementation of dedicated VPN solutions (eWON Talk2M) with multi-factor authentication and audit trail.
🛡️
OT equipment hardening
Disabling unused services, firmware updates, configuring access policies on PLC/HMI/switch.
📋
Documentation & procedures
OT security technical documentation, operational procedures and industrial network security maturity assessment.
📦
OT asset inventory
Complete cataloging of all devices connected to the industrial network: PLCs, HMIs, switches, gateways, IP sensors.
📡
OT network traffic baseline
Capture and analysis of normal industrial network traffic. Identification of unauthorized or anomalous communications.
🗺️
OT network as-built documentation
Updated industrial network diagram with all devices, VLANs, firewall rules and communication flows.
💾
PLC/HMI backup & recovery
Automated backup procedures and systems for PLC application programs and HMI configurations. Tested recovery plan.
🔄
OT change management
Change management procedures for application program modifications, network configurations and firmware updates.
🔧
OT patch validation & deployment
Security patch evaluation for control system compatibility. Planned deployment with rollback prepared.
🌐
Remote access audit
Inventory of all remote access paths to the OT network. Security evaluation of VPN, TeamViewer, RDP connections.
⛔
Industrial firewall configuration
Definition and implementation of firewall rules and ACLs on industrial network equipment. Protocol and source filtering.
🏗️
Secure architecture for new lines
Industrial network design for new production lines with security principles integrated from the start.
🚨
OT incident response plan
Development of incident response procedures specific to the OT environment. Roles, communication, isolation, recovery.
How we work
OT security measures start from a real assessment of the existing industrial network, not from an IT template. Every production network has its own specifics — protocols, legacy equipment, communication flows. We intervene only based on impact analysis and within agreed maintenance windows.
Process-first assessment
We analyze the network starting from the industrial process, not the IT infrastructure. We identify critical points relative to production availability.
Planned interventions
Any change to the production network is preceded by impact analysis, tested and executed within maintenance windows agreed with the client.
Documented deliverables
Updated network diagram, equipment inventory, documented firewall rules and prioritized remediation plan.