← Port Encyclopedia
5901
VNC-1
TCP
Remote Access
High Risk
VNC display 1 — additional VNC virtual display
🔍 How to Scan Port 5901
nmap -sV -p 5901 target
nmap -sV -sC --script=banner -p 5901 target
nc -zv target 5901
🛡️ Security Considerations
- Scan port 5901 with
nmap -sVto identify the exact service and version - If VNC-1 is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit vnc-1to find known exploits - Monitor traffic on port 5901 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation