In Samba configuration, what does the parameter 'security = user' specify?

The parameter 'security = user' in Samba configuration specifies that users must authenticate with a username and password for access to shared resources. When this setting is enabled, Samba requires clients to provide valid credentials before they can connect to shared directories or files. This ensures that access to the shares is controlled and only authorized users can access the data.

Choosing this option reflects a common security practice in network resources, ensuring sensitive data is adequately protected by requiring user authentication. The other options describe different access configurations and security policies that do not align with the function of the 'security = user' parameter, therefore reinforcing why the correct choice is focused on user authentication.