What must be mapped to Linux GIDs on a Samba PDC?

Mapping GIDs (Group IDs) to Linux user groups in a Samba Primary Domain Controller (PDC) configuration is crucial for proper access control and permissions management. In this context, Domain Users represent the typical user group in a Windows domain, encompassing regular users who require authentication and authorization to access resources.

By mapping Domain Users to specific Linux GIDs, you ensure that these users can perform actions and access files on the Linux system that are governed by group membership permissions. When a user logs into the domain from a Windows machine, Samba will correlate their account with the corresponding Linux account using these mappings, ensuring that permissions on shared resources align with the intended access levels for those users.

In a Samba PDC setup, appropriate mappings allow seamless integration between Windows clients and Linux file systems, enabling users to work in a mixed environment without running into permission issues. This makes it essential to effectively manage the Domain Users and their corresponding GIDs in the Linux environment.