Hello
For LDAP users who do not have access to Windows desktops, the requirement for a Client Access License (CAL) depends on the specific use case and the licensing terms of the software being used.
In general, if the LDAP users are only authenticating against Active Directory and not accessing any Windows Server services or applications that require a CAL, then a CAL may not be required. However, if these users are accessing services or applications that require a CAL, such as file sharing, printing, or other server-based applications, then a CAL would be necessary.