For which task is the process name 'authd' responsible?

The process name 'authd' is responsible for user authentication. This process plays a critical role in managing authentication requests from users trying to access resources through the firewall. It handles both local and remote authentication methods, ensuring that only authorized users can gain access based on defined policies. The functionality of 'authd' includes processing login events and validating user credentials against authentication servers, like RADIUS or LDAP, as well as handling single sign-on scenarios.

While the other options describe important processes and functionalities within the firewall, they do not pertain to the 'authd' process. IPsec connections involve secure network communications, file scanning pertains to inspecting files for malware, and FortiGuard updates are related to receiving security updates and threat intelligence. Each of these operates independently of the user authentication processes managed by 'authd'.