Getting Started In ICS/OT Cyber Security - + Hours - Part (Course )

Free ICS/OT Cyber Security Learning Resources

Here are some valuable YouTube courses for learning ICS/OT Cyber Security:

You Should Know:

1. Nmap Scanning for ICS/OT & IT

Nmap is a powerful network scanning tool. Below are some essential commands:

 Basic network scan 
nmap -sP 192.168.1.0/24

Scan for open ports 
nmap -sS -T4 192.168.1.1

Detect OS and services 
nmap -A -T4 192.168.1.1

Scan specific ports (common in ICS/OT) 
nmap -p 502,102,443,80 192.168.1.1

2. Using Shodan for ICS/OT Asset Discovery

Shodan is a search engine for internet-connected devices. Useful queries:

 Find Modbus devices 
shodan search port:502 "Modbus"

Discover Siemens PLCs 
shodan search "Siemens SIMATIC"

Locate SCADA systems 
shodan search "SCADA" country:US

3. Packet Analysis in ICS/OT

Wireshark is a go-to tool for packet analysis. Key filters:

 Filter Modbus traffic 
modbus

Detect suspicious traffic 
tcp.port == 502 && tcp.flags.syn == 1

Analyze HTTP traffic 
http.request.method == "GET"

ICS/OT Incident Response with Backdoors & Breaches

Use these commands to detect intrusions:

 Check for unusual processes (Linux) 
ps aux | grep -E "(nc|telnet|ssh|wget|curl)"

Monitor network connections 
netstat -tulnp

Check for unauthorized changes (Windows) 
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4663}

5. Hacking ICS/OT with ChatGPT

AI can assist in security testing. Example prompts:

“Generate a Python script to scan for open Modbus ports.”
“Explain how a PLC attack works.”
“Write a Metasploit module for SCADA exploitation.”

What Undercode Say:

ICS/OT security is critical for protecting industrial systems. Key takeaways:

Always use network segmentation to isolate OT from IT.
Monitor unusual traffic (e.g., unexpected Modbus requests).
Keep firmware updated to prevent known exploits.
Use strong authentication (disable default credentials).
Log and audit all access to ICS devices.

Additional Linux & Windows Commands:

Linux (ICS Monitoring & Defense)

 Check listening ports 
ss -tuln

Block suspicious IPs 
iptables -A INPUT -s 192.168.1.100 -j DROP

Monitor system logs 
tail -f /var/log/syslog | grep "modbus"

Windows (ICS Security Checks)

 List all active services 
Get-Service | Where-Object {$_.Status -eq "Running"}

Check firewall rules 
Get-NetFirewallRule | Select-Object Name,Enabled

Detect lateral movement attempts 
Get-WinEvent -LogName "Microsoft-Windows-Sysmon/Operational" | Where-Object {$_.ID -eq 3}

Expected Output:

Nmap scan results (open ports, services).
Shodan queries (exposed ICS devices).
Wireshark captures (abnormal traffic).
Incident response logs (unauthorized access).
AI-generated attack simulations (for testing defenses).

Keep learning and stay secure! 🚀

References:

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