ICS/SCADA › Module 6 › Lesson 3
Remote Access Hygiene
Remote access hygiene literacy names vendor VPN, jump hosts, MFA, session logging, and time-bound access on YOUR $OT_LAB — defensive OT literacy only; no real-plant attacks, unauthorized OT scans, or exploit cookbooks.
Visual · t38_remote_access_hygiene
Remote Access Hygiene literacy. $OT_LAB only. Original Cyberlium.
Opening
Vendor remote access is a top OT breach path — literacy documents hygiene rows defenders enforce.
OT remote access should use jump hosts, MFA, time-bound vendor accounts, session recording, and explicit approval workflows. Cyberlium drafts remote access hygiene checklist on fictional LAB-OT-001 — not sharing live vendor VPN credentials or bypassing logging. 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: Segmentation Lab.
1. What Remote Access Hygiene covers (named)
Hygiene literacy: unique vendor IDs, no split tunnel to internet, approved maintenance windows, disable when done. Monitor concurrent sessions and anomalous geolocation on jump hosts. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Write remote access hygiene row — control, verification, owner stub. Fictional vendor 'LAB-VENDOR-001' only. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Command guide
Try these commands — What Remote Access Hygiene covers (named)
═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)
CISA remote access — https://www.cisa.gov/resources-tools/resources/ics-recommended-practices NIST SP 800-82 — https://csrc.nist.gov/publications/detail/sp/800-82/rev-3/final
═══ INSTALL ═══
Linux (Debian/Ubuntu):
Command — copy this
sudo apt install python3
macOS:
Command — copy this
brew install python3
Windows: Download https://python.org/downloads/
═══ LINUX / macOS ═══
Command — copy this
export OT_LAB=${OT_LAB:-$HOME/cyberlium-lab/t38-ot}
cat > "$OT_ZONES/remote-access-hygiene.md" <<'EOF'
# Remote Access Hygiene — LAB-VENDOR-001 (fictional)
- MFA on jump host; no split tunnel
- Time-bound vendor account; disable after maintenance
- Session logging + approval ticket stub
- NEVER store live vendor VPN passwords in lab notes
EOFCommand — copy this
grep -E 'MFA|NEVER|Time-bound' "$OT_ZONES/remote-access-hygiene.md"
Primary tools to practice this lesson: grep, python3. Reference sites: CISA remote access (https://www.cisa.gov/resources-tools/resources/ics-recommended-practices); NIST SP 800-82 (https://csrc.nist.gov/publications/detail/sp/800-82/rev-3/final). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.
2. Why Remote Access Hygiene matters for defenders
Unlogged vendor sessions hide incident root cause. Hygiene checklist feeds M8 vendor module. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Students draft hygiene rows on lab notes. Production follows vendor access policies. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
3. $OT_LAB boundary
Forbidden: sharing live vendor VPN creds in lab notes. Allowed: remote access hygiene checklist on OT lab. On $OT_LAB, document literacy rows on fictional LAB-OT-001 — never live plant IPs, credentials, or exploit steps.
Ship: remote access hygiene row. Next: Segmentation Lab.
4. What you ship: remote access hygiene card for $OT_LAB
Remote access hygiene literacy names vendor VPN, jump hosts, MFA, session logging, and time-bound access. $OT_LAB named. NEVER real-plant attack steps. chmod 600.
5. What you record before the next lesson
Date (UTC). Remote Access Hygiene card. $OT_LAB named. File t38-m06-l03-remote-access-hygiene.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
Store employer vendor VPN password in lab checklist.
Right
Write remote access hygiene card for YOUR $OT_LAB. Next: Segmentation Lab.
Mission: document Remote Access Hygiene 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: Remote Access Hygiene 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: Remote Access Hygiene literacy on Cyberlium uses:
Multiple choice