← Port Encyclopedia
904
Port-904
TCP
System Low Risk
Reserved or unassigned port 904 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 904

nmap -sV -p 904 target
nmap -sV -sC --script=banner -p 904 target
nc -zv target 904

🛡️ Security Considerations

  • Scan port 904 with nmap -sV to identify the exact service and version
  • If Port-904 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-904 to find known exploits
  • Monitor traffic on port 904 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

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📍 Nearby Ports

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Port-900
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