Authelia is a centralized identity and access management server designed to secure web applications through unified authentication and authorization. It functions as an identity authority that enables single sign-on across diverse platforms, allowing users to access multiple services with a single set of credentials. By acting as a standards-compliant provider, it facilitates secure identity propagation and token issuance for client applications.
The platform distinguishes itself through its ability to integrate directly with web gateways as a reverse proxy authentication middleware, intercepting requests to validate user identity before granting access to protected resources. It enforces granular access control policies and provides robust multi-factor authentication, supporting various verification methods such as hardware security keys, mobile push notifications, and time-based one-time passwords. To maintain consistency across distributed environments, it utilizes stateless session management via encrypted cookies.
Authelia offers a flexible integration surface, featuring a pluggable backend that supports multiple external directory services like LDAP alongside internal database options. Its configuration is managed through a declarative, version-controlled YAML schema, which can be further automated using environment variables. The project provides comprehensive command-line tooling for policy validation and configuration management, with native support for deployment in containerized and orchestrated environments.
