← Port Encyclopedia
390

Port-390

TCP
System Low Risk
Reserved or unassigned port 390 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 390

nmap -sV -p 390 target
nmap -sV -sC --script=banner -p 390 target
nc -zv target 390

🛡️ Security Considerations

  • Scan port 390 with nmap -sV to identify the exact service and version
  • If Port-390 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-390 to find known exploits
  • Monitor traffic on port 390 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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Echo
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Discard
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systat
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Daytime
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QOTD
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Chargen
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Time
Port 79
Finger
Port 111
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Ident

📍 Nearby Ports

Port 385
Port-385
Port 386
Port-386
Port 387
Port-387
Port 388
Port-388
Port 389
LDAP
Port 391
Port-391
Port 392
Port-392
Port 393
Port-393
Port 394
Port-394
Port 395
Port-395
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