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Operational Technology (OT) cybersecurity is essential for safeguarding industrial systems, critical infrastructure, and manufacturing environments. Below are free resources to enhance your OT security expertise:
1. CISA ICS Training
👉 https://lnkd.in/dTiUXNpU
The Cybersecurity and Infrastructure Security Agency (CISA) provides free industrial control systems (ICS) cybersecurity courses.
2. Abhisam’s Free OT Cybersecurity Course
Covers OT security challenges and solutions for professionals.
3. Fortinet’s OT Security Training
👉 https://lnkd.in/dF-vz8UB
Learn how to secure OT environments using Fortinet’s solutions.
4. Dragos Academy
Free OT Cybersecurity Quick Start Guide and training.
5. SANS ICS Security Resources
Whitepapers, webcasts, and tools for ICS security.
6. MITRE Caldera for OT
👉 https://lnkd.in/d2g2f7rp
A free OT attack emulation tool for ICS security assessments.
7. Infosec Train’s OT/ICS Security Fundamentals
Foundational training on industrial control system security.
8. Mike Holcomb’s YouTube Series
👉 https://lnkd.in/d-BJUBzs
“Getting Started in ICS/OT Cyber Security” – 20+ hours of free OT cybersecurity content.
You Should Know: Essential OT Security Commands & Tools
Linux-Based OT Security Commands
1. Nmap for ICS Device Discovery
nmap -sV -p 1-1024 --script=modbus-discover <OT_IP_Range>
Scans for Modbus-enabled devices.
2. Wireshark for OT Traffic Analysis
wireshark -k -i eth0 -Y "modbus || dnp3 || ethercat"
Captures industrial protocol traffic.
3. Metasploit for ICS Exploitation Testing
msfconsole -q -x "use auxiliary/scanner/scada/modbusdetect; set RHOSTS <TARGET_IP>; run"
4. PLCScan for Device Enumeration
python plcscan.py -d <IP>
5. Snort for OT Network IDS
snort -A console -q -c /etc/snort/snort.conf -i eth0
Windows-Based OT Security Commands
1. Detecting ICS Protocols with PowerShell
Get-NetTCPConnection | Where-Object { $_.LocalPort -in 502,20000,44818 }
2. Logging ICS Communications
New-NetFirewallRule -DisplayName "Block Modbus" -Direction Inbound -LocalPort 502 -Action Block
3. Querying Windows Event Logs for OT Alerts
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4688} | Where-Object { $_.Message -match "scada" }
What Undercode Say
OT cybersecurity is a growing field, and hands-on practice is crucial. Use the above commands to assess and secure industrial networks. Always test in a controlled environment before deploying in production.
Expected Output:
A structured guide with free OT security resources and practical commands for professionals.
Would you like additional details on any specific tool or command?
References:
Reported By: Ouardi Mohamed – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅


