← Port Encyclopedia
671
Port-671
TCP
System Low Risk
Reserved or unassigned port 671 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 671

nmap -sV -p 671 target
nmap -sV -sC --script=banner -p 671 target
nc -zv target 671

🛡️ Security Considerations

  • Scan port 671 with nmap -sV to identify the exact service and version
  • If Port-671 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-671 to find known exploits
  • Monitor traffic on port 671 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related System Ports

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systat
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📍 Nearby Ports

Port 666
Doom
Port 667
Port-667
Port 668
Port-668
Port 669
Port-669
Port 670
Port-670
Port 672
Port-672
Port 673
Port-673
Port 674
Port-674
Port 675
Port-675
Port 676
Port-676
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