localhost:1745

Port 1745 is an unassigned port commonly used by custom applications, internal enterprise software, and development servers. Unlike standard ports like 80 or 443, port 1745 has no default service — it's available for your applications.

Common Uses for Port 1745

• Custom Enterprise Apps — Internal business applications
• Development Servers — When standard ports are taken
• Microservices — Individual service endpoints
• Testing Environments — Isolated test servers
• API Servers — Backend REST/GraphQL APIs

Find What's Running on Port 1745

# Windows
netstat -ano | findstr :1745
tasklist /FI "PID eq [pid]"

# Mac/Linux
lsof -i :1745
# or
netstat -tlnp | grep 1745

# Kill process using port
# Windows: taskkill /F /PID [pid]
# Mac/Linux: kill -9 [pid]

Start Your App on Port 1745

Node.js / Express

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

app.get('/', (req, res) => {
  res.send('Hello from port 1745!');
});

app.listen(1745, () => {
  console.log('Server running on http://localhost:1745');
});

Python Flask

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello():
    return 'Hello from port 1745!'

if __name__ == '__main__':
    app.run(port=1745)

Environment Variable

# Set port via environment
PORT=1745 npm start
PORT=1745 python app.py

Port 1745 vs Common Ports

Troubleshooting