RDP-Alt

TCP

Remote Access High Risk

Alternative RDP — non-standard Remote Desktop port

🔍 How to Scan Port 33389

nmap -sV -p 33389 target

nmap -sV -sC --script=banner -p 33389 target

nc -zv target 33389

Scan port 33389 with nmap -sV to identify the exact service and version
If RDP-Alt is not needed, close or firewall this port immediately
Check for default credentials if a management interface runs on this port
Use searchsploit rdp-alt to find known exploits
Monitor traffic on port 33389 with Wireshark or tcpdump for anomalies
Ensure the service is patched to the latest version to prevent known CVE exploitation

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