FortiAuthenticator by Fortinet is a centralized user identity management and access management solution that provides authentication, authorization, and identity management services. It delivers strong two-factor authentication capabilities and single sign-on functionality as part of Fortinet's Security Fabric through integration with FortiGate next-generation firewalls and other security components. The platform enables secure access control to company resources through identity verification and authentication policy enforcement, supporting both traditional and modern web and cloud authentication protocols.