OT security lab · Level 1 of 8
Map the plant network: put every device on its level
Level 1 of 8 in the OT security lab: a free OT security exercise at Foundation level. Place every device of a fictional plant on its Purdue level, from the field devices at level 0 to the business systems at levels 4 and 5, and find the DMZ.
Free · no download. Your work is saved on this device. Updated 18 Oct 2026.
The brief
- Client
- Brackenridge Water Works
- Site
- Treatment plant network, Brackenridge
- Work order
- WO-OTS-101
- Task code
- OTS-01
- Difficulty
- Foundation
- Type of work
- Mapping
Place every device of a fictional plant on its Purdue level, from the field devices at level 0 to the business systems at levels 4 and 5, and find the DMZ.
Skills you practise
- Purdue model levels 0 to 5
- Industrial DMZ
- Reading a plant network
- Asset inventory
What the test checks
The acceptance test marks the skills this level practises.
- Purdue model levels 0 to 5
- Industrial DMZ
- Reading a plant network
- Asset inventory
In this lab
- Purdue levels, zones and conduits
- Firewall rules, remote access and logs
- Patch plans, backups and an incident drill
Levels in the OT security lab
Next: Zones and conduits: split a flat network
- Map the plant network: put every device on its level
- Zones and conduits: split a flat network
- Firewall rules: the minimum, then deny by default
- Remote access: the vendor comes in through the DMZ
- Spot the intruder: the events that matter in a day's log
- Patch or protect: choose within the maintenance window
- Backup and recovery: known-good copies and a proved restore
- Incident drill: a simulated note on an operator screen
Part of the OT security lab
Map a plant network, split it into zones, write the firewall rules, read the logs and run the response drill.
Feeds these internships: SCADA and HMI.