80
HTTP
Hypertext Transfer Protocol
TCP
Web
Port Information
Port Number
80
Protocol
TCP
Category
Web
Common Usage
URL with Port
http://localhost:80 https://example.com:80
Node.js/Express Server
const express = require('express');
const app = express();
const PORT = 80;
app.listen(PORT, () => {
console.log(`Server running on port ${PORT}`);
});Docker Port Mapping
docker run -p 80:80 myapp # In docker-compose.yml ports: - "80:80"
Firewall Configuration
# Linux/Ubuntu firewall sudo ufw allow 80/tcp # Check if port is in use netstat -an | grep 80
Port 80 - HTTP
Hypertext Transfer Protocol This is a TCP port commonly used in web applications. Port numbers range from 0-65535, with ports 0-1023 being well-known system ports, 1024-49151 being registered ports, and 49152-65535 being dynamic/private ports.