← Port Encyclopedia
83

HTTP-Alt

TCP
Web Medium Risk
Alternative HTTP — third alternative web port

🔍 How to Scan Port 83

nmap -sV -p 83 target
nmap -sV -sC --script=banner -p 83 target
nc -zv target 83

🛡️ Security Considerations

  • Scan port 83 with nmap -sV to identify the exact service and version
  • If HTTP-Alt is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit http-alt to find known exploits
  • Monitor traffic on port 83 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Web Ports

Port 70
Gopher
Port 80
HTTP
Port 81
HTTP-Alt
Port 82
HTTP-Alt
Port 84
HTTP-Alt
Port 443
HTTPS
Port 2082
cPanel
Port 2083
cPanel-SSL
Port 2086
WHM
Port 2087
WHM-SSL
Port 4443
HTTPS-Alt
Port 5000
UPnP

📍 Nearby Ports

Port 78
Port-78
Port 79
Finger
Port 80
HTTP
Port 81
HTTP-Alt
Port 82
HTTP-Alt
Port 84
HTTP-Alt
Port 85
Port-85
Port 86
Port-86
Port 87
Port-87
Port 88
Kerberos
📚 Learn Network Scanning — Free Course
Found this useful? Share it.
Keep going
Free coursesStructured, day-by-day tracks Free hacking labsPractice in your browser, no setup Attack SimulatorHands-on challenges in your browser
Make it count. Join free to earn XP for what you read and solve, keep a streak, and track your progress.
Join free