4200
Angular
Angular development server
TCP
Web
Port Information
Port Number
4200
Protocol
TCP
Category
Web
Common Usage
URL with Port
http://localhost:4200 https://example.com:4200
Node.js/Express Server
const express = require('express');
const app = express();
const PORT = 4200;
app.listen(PORT, () => {
console.log(`Server running on port ${PORT}`);
});Docker Port Mapping
docker run -p 4200:4200 myapp # In docker-compose.yml ports: - "4200:4200"
Firewall Configuration
# Linux/Ubuntu firewall sudo ufw allow 4200/tcp # Check if port is in use netstat -an | grep 4200
Port 4200 - Angular
Angular development server 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.