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3128

Squid

Squid proxy server

TCP
Proxy

Port Information

Port Number

3128

Protocol

TCP

Category

Proxy

Common Usage

URL with Port

http://localhost:3128
https://example.com:3128

Node.js/Express Server

const express = require('express');
const app = express();
const PORT = 3128;

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

Docker Port Mapping

docker run -p 3128:3128 myapp

# In docker-compose.yml
ports:
  - "3128:3128"

Firewall Configuration

# Linux/Ubuntu firewall
sudo ufw allow 3128/tcp

# Check if port is in use
netstat -an | grep 3128