User Authentication is a process used to verify the identity of a user in Drupal. It is the process of confirming that a user is who they claim to be. This is done by requiring the user to provide some form of identification, such as a username and password, or a biometric scan. Once the user has been authenticated, they are granted access to the system. In Drupal, user authentication is handled by the user authentication module, which is responsible for verifying the identity of users and granting them access to the system.

The user authentication module is responsible for verifying the identity of users by requiring them to provide a username and password. It also provides additional security measures, such as two-factor authentication, which requires users to provide additional information, such as a code sent to their mobile device, in order to gain access. The user authentication module also provides other features, such as the ability to set up user roles and permissions, which determine what a user can and cannot do within the system.

User authentication is an important part of any system, as it ensures that only authorized users are able to access the system. In Drupal, user authentication is handled by the user authentication module, which provides a secure and reliable way to verify the identity of users and grant them access to the system.