← Port Encyclopedia
664
Port-664
TCP
System
Low Risk
Reserved or unassigned port 664 — may appear in network scans as open, closed, or filtered
🔍 How to Scan Port 664
nmap -sV -p 664 target
nmap -sV -sC --script=banner -p 664 target
nc -zv target 664
🛡️ Security Considerations
- Scan port 664 with
nmap -sVto identify the exact service and version - If Port-664 is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit port-664to find known exploits - Monitor traffic on port 664 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation