Security is critical for every backend API. NestJS provides a powerful authentication layer through Guards, Passport integration, and JWT modules that make login, authorization, and access control straightforward.
JWT and Passport Strategies
@nestjs/jwt and @nestjs/passport support local, JWT, OAuth2, and social login strategies. Tokens can be issued at login and validated on every protected request without server-side session storage.
Guards and Role-Based Access
Guards determine whether a request is allowed to reach a route handler. AuthGuard validates tokens, while custom RolesGuard enforces admin, manager, or user-level permissions using decorators like @Roles().
Refresh Tokens and Security Best Practices
Production apps use short-lived access tokens with refresh token rotation. NestJS middleware, throttling, and helmet integration add rate limiting and HTTP security headers.
- JWT access and refresh token flows.
- Passport local, JWT, and OAuth strategies.
- Guards for route-level protection.
- Role-based and permission-based access control.
- Secure password hashing with bcrypt.
Aadyanex implements secure NestJS authentication for SaaS, ERP integrations, mobile backends, and enterprise portals.