A stopped line costs money every minute, so plants cannot patch on the office’s schedule. Vendors keep remote access open for convenience. Ransomware that starts in the office can halt production even when no controller is touched, because nobody can be sure the plant is safe to run. Plant and IT teams get the same facts from Ollandi. Threats stop at the plant boundary, and every process decision stays with the people who run it.
By listening passively, Ollandi learns each zone’s normal traffic, which devices talk to which, and which vendors connect when.
PLCs, HMIs, historians, and engineering workstations
Plant, field, and safety network zones
Vendor and remote access into the plant
Firmware, logic changes, and maintenance work
Ollandi raises a case for an unapproved logic change, a vendor session that outstays its job, or office malware creeping toward the plant. Equipment faults that warn of an unplanned stop get the same attention.
Logic or setpoint changes made without a permit to work
A vendor session that stays connected after the job ends
Ransomware moving from the office network toward the plant
New devices or protocols appearing in a control zone
Equipment and network faults that point to an unplanned stop
Every case is framed in plant terms: the line, the asset, the permit, and what it could mean for production and safety.
Which site, line, and asset are involved
Whether a permit, maintenance window, or engineer explains it
What it could mean for production and safety
Who has authority to act on that asset
Ollandi’s reach stops at access and network paths. Process and safety decisions belong to your operators.
End a vendor’s remote session at the jump host
Close a path from the office network into the plant, once approved
Give the control room a recommendation and the evidence behind it
Leave anything that touches the process to your operators
An illustrative case, step by step, from the first signal to a confirmed result.
Flag
At 1 a.m., a vendor’s remote session writes a new setpoint to a pump controller. No permit covers it.
Check
Ollandi ties the write to the jump host, the vendor account, and this week’s permits. The process is stable, but the session came from an address the vendor has never used.
Hold
The remote session is ended at the jump host. The setpoint change and a recommendation go to the control room, where operators decide what happens to the pump.
Record
Controller state, access, and every decision are kept for the site’s safety and security review.
Connections
What it connects to
Ollandi reads passive network sensors in your plant zones, asset inventories, historians, and jump hosts, alongside office identity and network data. Nothing is installed on controllers, and plant data can stay on site under an on-premises license.
Engineers go out only when a visit will fix the fault, and jackpotting is cut off before the cassettes empty.
FAQ
Frequently asked questions
No process change happens without your control room. Ollandi acts at the access and network layer, such as ending a remote session, and only within your rules. Anything that touches the process reaches operators as a recommendation, with the evidence.
No. Ollandi listens to plant networks and reads asset inventories, historians, and remote-access records, so field devices run exactly as before.
Yes. Every vendor session is checked against permits and maintenance windows. Sessions that run late or come from new places are flagged, and can be ended at the jump host when your rules allow.
Get started
Put the Operational technology pack to work
Bring a vendor session or controller change that worried your team. We will lay it against your permits and process data, and show what Ollandi would have done.