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Port 80: HTTP (Hypertext Transfer Protocol)

Port 80 is the default TCP port for unencrypted World Wide Web HTTP traffic.

Protocol
TCP
Category
Web Services
Common Services
Nginx, Apache, LiteSpeed, Caddy, Cloudflare

What is Port 80 and How Does It Work?

Port 80 is the default TCP port for unencrypted World Wide Web HTTP traffic.

Security Vulnerabilities & Attack Vectors on Port 80

HTTP traffic is plaintext and prone to eavesdropping. Modern servers must permanently redirect Port 80 to Port 443 (HTTPS).

Auditing & Scanning Port 80 with Nmap

Run the following command to check if Port 80 is reachable and determine service fingerprints:

nmap -p 80 -sV --script http-title,http-headers

Frequently Asked Questions

How do I check if Port 80 is open?
Use cyber-tool.org diagnostic tools or run 'nc -zv 80' in your terminal to verify open socket connections.
Is it safe to leave Port 80 open to the internet?
Exposing Port 80 (HTTP (Hypertext Transfer Protocol)) publicly introduces potential exposure. Protect it with IP whitelisting, firewalls, and encryption.