Q:

Authenticate Samba using Azure AD

Background: 
We have a samba file server using security = user, authenticating users in local linux, works great.
We migrated our cloud solution to Office 365, which includes a Azure AD.
Question:
Is that possible to Samba authenticate users in Azure AD and map to local linux users?
I wouldn't like to join samba as domain member, actually, don't even know if it is possible, too cumbersome.
I'd like a simple solution to this issue.

A:

According to the note of the offical document Overview of Azure Active Directory authentication over SMB for Azure Files (preview), as below, it seems to be impossible for authenticating Samba with AAD although this document is for Azure File Storage.

Azure AD authentication over SMB is not supported for Linux VMs for the preview release. Only Windows Server VMs are supported.

However, a workaround way I think is to combine a LDAP with Azure AD and then to authenticate Samba with LDAP. You can try to refer to the documents below to know how to do.

Configure secure LDAP (LDAPS) for an Azure AD Domain Services managed domain
LDAP-based authentication for Samba

As above, it seems to be not a simple solution. Maybe you need to consider for your scenario using Samba to develop a web application with Azure AD authentication.

