3306
MySQL
MySQL database server
TCP
Database
Port Information
Port Number
3306
Protocol
TCP
Category
Database
Common Usage
URL with Port
http://localhost:3306 https://example.com:3306
Node.js/Express Server
const express = require('express');
const app = express();
const PORT = 3306;
app.listen(PORT, () => {
console.log(`Server running on port ${PORT}`);
});Docker Port Mapping
docker run -p 3306:3306 myapp # In docker-compose.yml ports: - "3306:3306"
Firewall Configuration
# Linux/Ubuntu firewall sudo ufw allow 3306/tcp # Check if port is in use netstat -an | grep 3306
Port 3306 - MySQL
MySQL database server This is a TCP port commonly used in database 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.