← Port Encyclopedia
911
Port-911
TCP
System Low Risk
Reserved or unassigned port 911 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 911

nmap -sV -p 911 target
nmap -sV -sC --script=banner -p 911 target
nc -zv target 911

🛡️ Security Considerations

  • Scan port 911 with nmap -sV to identify the exact service and version
  • If Port-911 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-911 to find known exploits
  • Monitor traffic on port 911 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related System Ports

Port 1
TCPMUX
Port 5
RJE
Port 7
Echo
Port 9
Discard
Port 11
systat
Port 13
Daytime
Port 17
QOTD
Port 19
Chargen
Port 37
Time
Port 79
Finger
Port 111
RPCbind
Port 113
Ident

📍 Nearby Ports

Port 906
Port-906
Port 907
Port-907
Port 908
Port-908
Port 909
Port-909
Port 910
Port-910
Port 912
Port-912
Port 913
Port-913
Port 914
Port-914
Port 915
Port-915
Port 916
Port-916
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