Industrial Networks & OT Security
Industrial network design and OT security for control systems — segmentation, hardening and assessment aligned with IEC 62443.
Industrial Network Design
- Plant network architecture for control and safety systems (EtherNet/IP, fiber ring, redundancy).
- Managed industrial switching designed for deterministic control traffic.
- Documented topology, addressing and configuration.
Segmentation & Hardening
- Zone and conduit segmentation between IT and OT.
- Hardening of controllers, HMI and engineering stations.
- Secure remote access paths defined and documented.
IEC 62443 Assessment
- Assessment of the existing OT environment against IEC 62443.
- Findings prioritised into a practical remediation plan.
- Repeat assessment after remediation.
Monitoring & Incident Response
- OT network monitoring for anomalies and unauthorised changes.
- Incident response support for control system events.
- Response coverage is defined in each support agreement.
Control reliability and cybersecurity both start with the network. TDL designs industrial networks that are fast enough for modern SCADA traffic, resilient to single-point failures and segmented correctly between OT and IT zones. We follow IEC 62443 zone-and-conduit principles, harden switches and firewalls to vendor-approved baselines, and validate every ring, gateway and firewall with actual failover tests — not just a paper design.
[CONFIRM: OT security capability statement — engineers, certifications held (e.g. ISA/IEC 62443), reference work. Source: Capability Mapping 2026 section 5.]
Platforms
Spare parts and product catalog (Vietnamese): stratix