Top 10 ICS/OT Cybersecurity Resources And Guides

What about the ICS/OT cybersecurity certs from the SANS Institute?
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2. Nmap scanning in ICS/OT networks?

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Want to feel welcome and level up your ICS/OT cybersecurity skills?
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What does an OT/ICS cyber-attack actually look like?
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5. People overcomplicate ICS/OT cyber security.

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Want to create a home ICS/OT cyber security lab with HMIs?
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7. Are you ready to help secure ICS/OT?

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Want to level up your ICS/OT knowledge for FREE?
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What’s better than one firewall between IT & OT?
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10. How can you help protect ICS/OT?

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Practice Verified Codes and Commands

Nmap Scanning for ICS/OT Networks
```
nmap -sS -sV -O -p 1-1024 <target_IP>
```
This command performs a SYN scan, service version detection, and OS detection on common ICS/OT ports.

Firewall Configuration for IT/OT Segmentation

iptables -A FORWARD -i eth0 -o eth1 -p tcp --dport 502 -j ACCEPT
iptables -A FORWARD -i eth1 -o eth0 -p tcp --sport 502 -j ACCEPT
iptables -A FORWARD -j DROP

This ensures only Modbus TCP traffic (port 502) is allowed between IT and OT networks.

Creating a Home ICS/OT Lab
```
docker run -d --name scada-lab -p 8080:80 -p 502:502 scada-simulator
```
This command sets up a basic SCADA simulator using Docker.

What Undercode Say

ICS/OT cybersecurity is a critical field that bridges the gap between operational technology and information security. The resources provided above offer a comprehensive guide to understanding and securing ICS/OT environments. From certifications to practical lab setups, these links cover a wide range of topics essential for professionals in this domain.

To further enhance your skills, consider exploring Linux-based tools like `tshark` for network analysis in ICS environments:

tshark -i eth0 -f "tcp port 502" -Y "modbus"

This command captures and filters Modbus traffic for analysis.

For Windows-based ICS systems, PowerShell can be a powerful tool for monitoring and securing OT environments:

Get-NetTCPConnection -State Established | Where-Object { $_.LocalPort -eq 502 }

This script identifies active Modbus TCP connections.

Additionally, understanding industrial protocols like Modbus, DNP3, and OPC UA is crucial. Tools like `Wireshark` and `PLCscan` can help analyze and secure these protocols.

Finally, always ensure your ICS/OT systems are updated and patched. Use commands like `apt-get update` and `apt-get upgrade` on Linux systems or `wuauclt /detectnow` on Windows to keep your systems secure.

For further reading, visit:

By combining theoretical knowledge with practical skills, you can significantly improve the security posture of ICS/OT environments.

References:

initially reported by: https://www.linkedin.com/posts/mikeholcomb_want-to-know-more-about-icsot-cybersecurity-ugcPost-7301987447825960961-wX2z – Hackers Feeds
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