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Muhammed Sarbast
Muhammed Sarbast

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Advanced Authentication in Node.js with Auth0


Node.js provides an ideal environment to create server-side applications, with the possibility to employ different authentication strategies. One of the powerful tools you can use is Auth0, a flexible, drop-in solution to add authentication and authorization services to your applications. This blog will explore advanced usage of Auth0 with Node.js.


  1. Basic knowledge of Node.js and Express.js
  2. Familiarity with Auth0
  3. An Auth0 account

Creating a Node.js Application:

Create a new directory for your application and initialize it with a package.json file. This can be done by running the following commands:

mkdir myAuthApp && cd myAuthApp
npm init -y
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Setting Up Auth0:

Sign up or log into your Auth0 account. Create a new 'Regular Web Application' and note down your 'Domain', 'Client ID', and 'Client Secret'. These values will be used later.

Implementing Auth0 in Node.js:

Install necessary packages by running: npm install express dotenv passport passport-auth0 express-session.

Create a .env file and add the following lines, replacing the placeholders with the credentials from Auth0.

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Configuring Passport:

Passport is the authentication middleware for Node.js. Passport-Auth0 strategy is employed for the Auth0 implementation. Set up passport with Auth0 strategy like this:

const passport = require('passport');
const Auth0Strategy = require('passport-auth0');

let strategy = new Auth0Strategy(
    domain: process.env.AUTH0_DOMAIN,
    clientID: process.env.AUTH0_CLIENT_ID,
    clientSecret: process.env.AUTH0_CLIENT_SECRET,
    callbackURL: process.env.AUTH0_CALLBACK_URL || 'http://localhost:3000/callback'
  function(accessToken, refreshToken, extraParams, profile, done) {
    return done(null, profile);


passport.serializeUser(function(user, done) {
  done(null, user);

passport.deserializeUser(function(user, done) {
  done(null, user);
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Securing Routes:

To secure routes, you can use the 'ensureLoggedIn' middleware from 'connect-ensure-login' package. It will redirect unauthenticated users to the login page.

const ensureLoggedIn = require('connect-ensure-login').ensureLoggedIn();
app.get('/user', ensureLoggedIn, (req, res) => {
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Auth0 offers a robust, highly customizable authentication and authorization service. It's easy to integrate with a Node.js application and can take a lot of the work off your shoulders when it comes to managing user authentication. The above guide gives a glimpse into the advanced application of Auth0. Always remember to keep your sensitive data secure and never expose your secrets in the client-side or public repositories.

Top comments (1)

vdelitz profile image

Nice and concise article!