Manufacturing · Mid-size plant · multiple production lines
Hardening an OT network for a food-grade manufacturing plant
Plants where PLCs share the office VLAN — often with default camera credentials still in place — are commonly flagged in customer audits as a single-laptop-from-downtime risk. The fix is structural rather than a single configuration change.
Representative scenario. Specific named engagements and references are shared privately with serious prospects after a site walk.
A typical hardening pass segments OT and IT networks, vaults per-device credentials, applies dual-custody access to the server room, and backs up the HMI historian offsite — the architecture pattern customer audits expect to see.
Typical before vs after
What this kind of deployment changes.
After Lunarlink
Segmented, credentialed, and audit-ready.
What the architecture looks like once the deployment is in place.
- OT VLAN firewalled from office traffic
- Per-device camera and PLC credentials in a password vault
- Dual-custody access to the server room with logged entries
- Hourly HMI historian backup to offsite storage
Planning a deployment like this?
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