This is the process by which an entity verifies theidentity of a user or system before granting access. This ensures that a user has the right to access a resource. Authentication can be performed using passwords, certificates, biometrics, etc.
It guarantees secure, controlled access to IT resources.
During authentication, identification information provided by the user, such as login credentials, digital certificates or biometric fingerprints, is compared with data stored in a database.
Access is granted only if the information matches exactly.
In a company, the information system administrator is responsible for assigning rights and configuring access to resources. A user with an access account, consisting of a username and password, can only access resources specifically authorized to him or her.