← Port Encyclopedia
43

WHOIS

TCP
OSINT Low Risk
WHOIS protocol — domain registration lookup, reconnaissance tool for attackers

🔍 How to Scan Port 43

nmap -sV -p 43 target
nmap -sV -sC --script=banner -p 43 target
nc -zv target 43

🛡️ Security Considerations

  • Scan port 43 with nmap -sV to identify the exact service and version
  • If WHOIS is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit whois to find known exploits
  • Monitor traffic on port 43 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

📍 Nearby Ports

Port 38
Port-38
Port 39
Port-39
Port 40
Port-40
Port 41
Port-41
Port 42
WINS
Port 44
Port-44
Port 45
Port-45
Port 46
Port-46
Port 47
Port-47
Port 48
Port-48
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