Authentication and Authorization

One of the first steps to secure any application is to implement a robust authentication and authorization system. In Node.js, this can be achieved in various ways depending on the needs of your application.

Authentication

Authentication is the process of verifying a user's identity. In Node.js, the passport package is one of the most popular libraries for handling authentication. Below is a basic example of how to set up Passport with local authentication.

Installation

bash

Configuration

javascript

Authorization

Authorization is the process of determining if an authenticated user has permission to perform a specific action. This can be managed via middleware on specific routes.

Authorization Middleware Example

javascript

Conclusion

Implementing a robust authentication and authorization system is crucial to protect your Node.js application. Make sure to handle credentials correctly and use secure protocols (like HTTPS) to protect data in transit. In the next topic, we will review how to manage dependencies securely in your application.