← Port Encyclopedia
817

Port-817

TCP
System Low Risk
Reserved or unassigned port 817 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 817

nmap -sV -p 817 target
nmap -sV -sC --script=banner -p 817 target
nc -zv target 817

🛡️ Security Considerations

  • Scan port 817 with nmap -sV to identify the exact service and version
  • If Port-817 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-817 to find known exploits
  • Monitor traffic on port 817 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
Port 5
RJE
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Echo
Port 9
Discard
Port 11
systat
Port 13
Daytime
Port 17
QOTD
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Chargen
Port 37
Time
Port 79
Finger
Port 111
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Port 113
Ident

📍 Nearby Ports

Port 812
Port-812
Port 813
Port-813
Port 814
Port-814
Port 815
Port-815
Port 816
Port-816
Port 818
Port-818
Port 819
Port-819
Port 820
Port-820
Port 821
Port-821
Port 822
Port-822
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