ICS/SCADA › Module 6 › Lesson 1
Zones Conduits
Zones and conduits literacy names IEC 62443 segmentation model for fictional plant diagrams on YOUR $OT_LAB — defensive OT literacy only; no real-plant attacks, unauthorized OT scans, or exploit cookbooks.
Visual · t38_zones_conduits
Zones Conduits literacy. $OT_LAB only. Original Cyberlium.
Opening
Flat OT networks fail audits and incidents — literacy draws zones and conduits on YOUR lab diagram before touching real plant firewalls.
IEC 62443 zones group assets with common security requirements; conduits are controlled paths between zones. Cyberlium drafts zone/conduit rows on fictional LAB-OT-001 ASCII diagrams — not unauthorized changes to employer OT firewalls. Cyberlium Topic 38 practices on $OT_LAB — YOUR fictional OT templates, zone diagrams, and labeled checklists under $HOME/cyberlium-lab/t38-ot/ no real-plant attacks, unauthorized OT scans, or exploit cookbooks. Next: Firewall OT.
1. What Zones Conduits covers (named)
Zone literacy: enterprise, manufacturing, cell/area, safety zones with trust levels. Conduit literacy: allowed protocols, direction, inspection points, MFA jump requirements. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Write zone map stub — three zones, two conduits, allowed traffic labels. OT lab diagram only. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Command guide
Try these commands — What Zones Conduits covers (named)
═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)
IEC 62443 — https://www.isa.org/standards-and-publications/isa-standards/isa-iec-62443-series-of-standards CISA segmentation — https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
═══ INSTALL ═══
Linux (Debian/Ubuntu):
Command — copy this
sudo apt install python3
macOS:
Command — copy this
brew install python3
Windows: Download https://python.org/downloads/
═══ LINUX / macOS ═══
Command — copy this
export OT_LAB=${OT_LAB:-$HOME/cyberlium-lab/t38-ot}
cat > "$OT_ZONES/zone-map-stub.txt" <<'EOF'
LAB-OT-001 ZONE MAP (ASCII literacy stub)
[Enterprise]--conduit-->[DMZ/jump]--conduit-->[OT Cell]
\--conduit-->[Safety Zone]
Conduit rules: allowlist only; log; MFA on jump; review quarterly
EOFCommand — copy this
grep -E 'ZONE|conduit|allowlist' "$OT_ZONES/zone-map-stub.txt"
Primary tools to practice this lesson: grep, python3. Reference sites: IEC 62443 (https://www.isa.org/standards-and-publications/isa-standards/isa-iec-62443-series-of-standards); CISA segmentation (https://www.cisa.gov/resources-tools/resources/ics-recommended-practices). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.
2. Why Zones Conduits matters for defenders
Zone maps drive firewall rules and monitoring tap placement. Undocumented conduits hide vendor VPN paths. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Students draft zone ASCII diagrams on lab notes. Production follows OT network design standards. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
3. $OT_LAB boundary
Forbidden: editing live plant firewall without change ticket. Allowed: zone/conduit literacy diagram on OT lab. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Ship: zone/conduit diagram stub. Next: Firewall OT.
4. What you ship: zones conduits card for $OT_LAB
Zones and conduits literacy names IEC 62443 segmentation model for fictional plant diagrams. $OT_LAB named. NEVER real-plant attack steps. chmod 600.
5. What you record before the next lesson
Date (UTC). Zones Conduits card. $OT_LAB named. File t38-m06-l01-zones-conduits.txt chmod 600.
6. Wrong vs right: plant attacks vs YOUR OT lab sims
Worked failure — same MSF word, opposite target. Right never needs a café Wi-Fi or classmate laptop.
Wrong
Push firewall rule to employer OT VLAN without MOC.
Right
Write zones conduits card for YOUR $OT_LAB. Next: Firewall OT.
Mission: document Zones Conduits on YOUR OT lab
1) Name literacy rows on $OT_LAB. 2) Write NEVER list (no real-plant attacks, unauthorized OT scans, or exploit cookbooks). 3) chmod 600. Never scan or exploit real industrial networks.
Stuck? Ask Cyberlium AI Mentor
Ask Mentor: literacy on $OT_LAB — not attack recipes against live plants.
Knowledge Check
APPLY: Zones Conduits on Cyberlium means:
Multiple choice
Knowledge Check
APPLY: True or False: Topic 38 includes ICS attack cookbooks against real plants.
True or False
Knowledge Check
APPLY: Zones Conduits literacy on Cyberlium uses:
Multiple choice