Posts tagged "OT Security"
6 articles across the Voltrus blog.
This collection brings together every OT Security article published on the Voltrus blog. "How to Enable PUT/GET on S7-1200/1500 (and Why Siemens Disables It)", "TeamViewer Alternative for PLC Remote Access: Why OT Teams Are Switching", "Secure Remote Access to PLC Networks: A Practical Guide for Integrators" — each one is a practical, hands-on guide written for engineers and system integrators. Whether you are choosing between protocols, troubleshooting a connection, or planning an integration, these articles cover the concepts, the trade-offs, and the step-by-step details you need.
How to Enable PUT/GET on S7-1200/1500 (and Why Siemens Disables It)
How to enable PUT/GET on Siemens S7-1200/1500. Why Siemens disables it by default, the TIA Portal steps, the security trade-off, and safer alternatives like OPC UA.
Read articleTeamViewer Alternative for PLC Remote Access: Why OT Teams Are Switching
TeamViewer puts an always-on graphical backdoor on the OT network. A WireGuard mesh gives the engineer a route to the PLC subnet only — outbound-only, self-hosted, no third-party relay.
Read articleSecure Remote Access to PLC Networks: A Practical Guide for Integrators
Threat model, architecture, ACL design, and a deployment checklist for reaching PLC subnets over a self-hosted WireGuard mesh without exposing the OT network.
Read articleWireGuard vs Traditional VPN for OT Networks: Which Wins in 2026
WireGuard vs IPsec/OpenVPN for OT remote access: performance, audit surface, key management, NAT traversal (DERP), and why WireGuard + Headscale fits industrial sites.
Read articleRemote Access Without Inbound Ports: Outbound-Only OT Connectivity
Opening inbound VPN ports on an OT firewall violates every security baseline. Outbound-only mesh connectivity plus DERP-over-TCP/443 sidesteps it entirely.
Read articleOT Security Checklist: 15 Steps to Harden Your SCADA System
Actionable security checklist based on real OT breach analysis and IEC 62443 best practices. Default credentials, network segmentation, monitoring, and more.
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