← Port Encyclopedia
781

Port-781

TCP
System Low Risk
Reserved or unassigned port 781 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 781

nmap -sV -p 781 target
nmap -sV -sC --script=banner -p 781 target
nc -zv target 781

🛡️ Security Considerations

  • Scan port 781 with nmap -sV to identify the exact service and version
  • If Port-781 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-781 to find known exploits
  • Monitor traffic on port 781 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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TCPMUX
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RJE
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Discard
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systat
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Daytime
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Port 37
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Port 79
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Port 111
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📍 Nearby Ports

Port 776
Port-776
Port 777
Port-777
Port 778
Port-778
Port 779
Port-779
Port 780
Port-780
Port 782
Port-782
Port 783
Port-783
Port 784
Port-784
Port 785
Port-785
Port 786
Port-786
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