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443

HTTPS

HTTP Secure (SSL/TLS)

TCP
Web

Port Information

Port Number

443

Protocol

TCP

Category

Web

Common Usage

URL with Port

http://localhost:443
https://example.com:443

Node.js/Express Server

const express = require('express');
const app = express();
const PORT = 443;

app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`);
});

Docker Port Mapping

docker run -p 443:443 myapp

# In docker-compose.yml
ports:
  - "443:443"

Firewall Configuration

# Linux/Ubuntu firewall
sudo ufw allow 443/tcp

# Check if port is in use
netstat -an | grep 443