20000

DNP3

TCP

Industrial Critical Risk

Distributed Network Protocol — SCADA/ICS, power grid, water systems

🔍 How to Scan Port 20000

nmap -sV -p 20000 target

nmap -sV -sC --script=banner -p 20000 target

nc -zv target 20000

Scan port 20000 with nmap -sV to identify the exact service and version
If DNP3 is not needed, close or firewall this port immediately
Check for default credentials if a management interface runs on this port
Use searchsploit dnp3 to find known exploits
Monitor traffic on port 20000 with Wireshark or tcpdump for anomalies
Ensure the service is patched to the latest version to prevent known CVE exploitation

Found this useful? Share it.

Keep going

Make it count. Join free to earn XP for what you read and solve, keep a streak, and track your progress.