An introductory guide to Two-Factor Authentication (2FA) covering the three authentication factors, how TOTP (Time-based One-Time Password) works, and a step-by-step Node.js implementation using the passport-2fa-totp library with Google Authenticator. Includes code examples for configuring Passport strategy, routes, and a login form.
Table of contents
A Crash Course to Two-Factor Authentication Copy link Link copied!How 2FA Works Copy link Link copied!TOTP Explained Copy link Link copied!Why 2FA is Important Copy link Link copied!Javascript Implementation Copy link Link copied!Outro Copy link Link copied!Sort: