← Port Encyclopedia
166

Port-166

TCP
System Low Risk
Reserved or unassigned port 166 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 166

nmap -sV -p 166 target
nmap -sV -sC --script=banner -p 166 target
nc -zv target 166

🛡️ Security Considerations

  • Scan port 166 with nmap -sV to identify the exact service and version
  • If Port-166 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-166 to find known exploits
  • Monitor traffic on port 166 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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Echo
Port 9
Discard
Port 11
systat
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Daytime
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QOTD
Port 19
Chargen
Port 37
Time
Port 79
Finger
Port 111
RPCbind
Port 113
Ident

📍 Nearby Ports

Port 161
SNMP
Port 162
SNMP-Trap
Port 163
Port-163
Port 164
Port-164
Port 165
Port-165
Port 167
Port-167
Port 168
Port-168
Port 169
Port-169
Port 170
Port-170
Port 171
Port-171
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