← Port Encyclopedia
189

Port-189

TCP
System Low Risk
Reserved or unassigned port 189 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 189

nmap -sV -p 189 target
nmap -sV -sC --script=banner -p 189 target
nc -zv target 189

🛡️ Security Considerations

  • Scan port 189 with nmap -sV to identify the exact service and version
  • If Port-189 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-189 to find known exploits
  • Monitor traffic on port 189 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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systat
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QOTD
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Port 37
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Port 79
Finger
Port 111
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📍 Nearby Ports

Port 184
Port-184
Port 185
Port-185
Port 186
Port-186
Port 187
Port-187
Port 188
Port-188
Port 190
Port-190
Port 191
Port-191
Port 192
Port-192
Port 193
Port-193
Port 194
IRC
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