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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:
🔹 Cybersecurity and Infrastructure Security Agency (CISA) ICS Training
Free courses on industrial control systems (ICS) cybersecurity for professionals securing critical infrastructure.
👉 https://lnkd.in/dTiUXNpU
🔹 Abhisam’s Free OT Cybersecurity Course
Covers key OT security challenges and solutions for experienced professionals.
👉 https://lnkd.in/dceWNzzW
🔹 Fortinet’s OT Security Training
Learn to protect OT environments using Fortinet’s security solutions.
👉 https://lnkd.in/dF-vz8UB
🔹 Dragos Academy
Free OT Cybersecurity Quick Start Guide and training for IT/OT professionals.
👉 https://lnkd.in/dfSZgVs7
🔹 SANS ICS Security Resources
Free whitepapers, webcasts, and tools for ICS security.
🔹 MITRE Caldera for OT
OT attack emulation tool for ICS security assessments.
🔹 Infosec Train’s OT/ICS Security Fundamentals
Free foundational training on industrial control system security.
🔹 Mike Holcomb’s YouTube Series
“Getting Started in ICS/OT Cyber Security” – 20+ hours of free OT cybersecurity content.
👉 https://lnkd.in/d-BJUBzs
You Should Know:
Essential OT Security Commands & Tools
1. Nmap for ICS Device Discovery
nmap -sT -Pn -p 502,102,44818,1911 <OT_Network_IP_Range>
Scans common OT protocols (Modbus, Siemens S7, EtherNet/IP).
2. Wireshark OT Protocol Analysis
wireshark -k -i eth0 -Y "modbus || enip || s7comm"
Captures and filters industrial protocols.
3. Hardening Linux-Based OT Systems
sudo apt install ufw sudo ufw enable sudo ufw allow 22/tcp Allow SSH sudo ufw deny 502/tcp Block Modbus by default
4. Windows ICS Security (PowerShell)
Disable unnecessary services Stop-Service -Name "Upnphost" -Force Set-Service -Name "Upnphost" -StartupType Disabled
5. MITRE Caldera OT Attack Simulation
docker pull mitre/caldera:ot docker run -p 8888:8888 mitre/caldera:ot
Access via `http://localhost:8888` to emulate OT threats.
6. Logging Industrial Traffic (Syslog)
sudo apt install rsyslog echo "module(load=\"imudp\") input(type=\"imudp\" port=\"514\")" | sudo tee -a /etc/rsyslog.conf sudo systemctl restart rsyslog
What Undercode Say:
OT cybersecurity demands a blend of network monitoring, protocol analysis, and system hardening. Use tools like Nmap, Wireshark, and Caldera to assess vulnerabilities. Always segment OT networks from IT, disable unused services, and monitor Modbus/TCP, DNP3, and PROFINET traffic. Regularly update ICS device firmware and enforce least-privilege access.
Expected Output:
A fortified OT environment resilient to cyber-physical threats.
References:
Reported By: Ouardi Mohamed – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
