Guide to Implementing Authentication with NestJS and SSO Saml2
Introduction SSO (Single Sign-On) is a centralized authentication mechanism that allows users to access multiple different systems with a single set of login credentials. Key advantages include: Improving user experience by reducing the number of passwords to remember. Enhancing security through centralized management and minimizing the risk of brute-force attacks at various points. Purpose: To enable users to log in only once to one location (Identity Provider - IdP) but be able to access multiple different applications without re-entering their password. Example: You log into your Google account, then open Gmail, YouTube, Drive without logging in again. SAML & SAML2 (Security Assertion Markup Language) SAML 1.0/1.1 were the first versions that laid the foundation for exchanging identity data using XML, but are now obsolete. SAML 2.0 (Saml2) is a strong combination and improvement, supporting modern web scenarios and becoming the most popular standard for SSO in Corporate/Enterpri...