← Port Encyclopedia
839

Port-839

TCP
System Low Risk
Reserved or unassigned port 839 — may appear in network scans as open, closed, or filtered

🔍 How to Scan Port 839

nmap -sV -p 839 target
nmap -sV -sC --script=banner -p 839 target
nc -zv target 839

🛡️ Security Considerations

  • Scan port 839 with nmap -sV to identify the exact service and version
  • If Port-839 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit port-839 to find known exploits
  • Monitor traffic on port 839 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 834
Port-834
Port 835
Port-835
Port 836
Port-836
Port 837
Port-837
Port 838
Port-838
Port 840
Port-840
Port 841
Port-841
Port 842
Port-842
Port 843
Port-843
Port 844
Port-844
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