← Port Encyclopedia
791
Port-791
TCP
System Low Risk
Reserved or unassigned port 791 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 791

nmap -sV -p 791 target
nmap -sV -sC --script=banner -p 791 target
nc -zv target 791

🛡️ Security Considerations

  • Scan port 791 with nmap -sV to identify the exact service and version
  • If Port-791 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-791 to find known exploits
  • Monitor traffic on port 791 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation