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Re: [Samba] Google Cloud Directory Service password synchronization for AD DC




Hi Justin,

Thank you for your answer, I had found this utility during my searches, and
will probably try it. As you say, reversible + plaintext is far for optimal
from a security point of view.
Also, I would like to integrate the solution in a "packaged" distribution
like for example Zentyal or UCS.
But I'm happy to learn that this solution is viable, I wouldn't lose my
time digging in that direction

2018-03-22 21:05 GMT+01:00 Justin Foreman <jforeman@xxxxxxxxxxxxxxxxxxxxxxxx
>:

> Fabien,
>
> The way that we’ve accomplished this was to ensure that all users have the
> “Store passwords using reversible encryption” (which is not optimal) and
> use a utility called “samba4-gaps.”
>
> Also:
> samba-tool domain passwordsettings set --store-plaintext=on
>
> Works perfectly.
>
> https://github.com/baboons/samba4-gaps
>
> Justin
>
> > On Mar 22, 2018, at 3:58 PM, Lapin Blanc via samba <
> samba@xxxxxxxxxxxxxxx> wrote:
> >
> > I'm trying to have my Samba 4 AD DC users mapped and synchronized with
> > google apps for education accounts.
> > I would like to start from the native windows password update procedure
> to
> > eventually update the google apps password (actually, I think only some
> > types of hashes are stored).
> >
> > Google actually provides a tool to synchronize user accounts and profiles
> > which works juste fine. This tools queries an LDAP directory, extracts
> > relevant informations and sync them with google apps.
> > It would also synchronize passwords if there were in the LDAP directory.
> > Actually, if I manually set a "userPassword" attribute for a user, using
> > MD5 hash for example, synchronization works just fine and the google apps
> > account gets updated.
> >
> > Alas, if I get it right, Samba 4 acting as a AD DC uses it's own internal
> > LDAP server and also a default Heimdal implementation of Kerberos, also
> > included in Samba. Thus, the password (or it's hash) doesn't get stored
> in
> > the LDAP directory (correct me if I'm wrong).
> >
> > I found smbkrb5pwd which is an OpenLDAP (slapd) overlay to change LDAP,
> > Samba and MIT
> > Kerberos passwords at the same time. (Then the password hash would end in
> > the directory, where I could synchronized from). But I guess I can't use
> it
> > for Samba's internal LDAP server.
> >
> > I've also investigated on how and where and how Samba stores domain users
> > passwords, but I have difficulties to track the update procedure... Is
> > there somewhere I could "intercept" or "get" the password or a usable
> hash
> > from ? Sorry for my poor english, I'm basically speaking french, and hope
> > I've made myself clear...
> >
> > Thank you
> >
> > Fabien Toune
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>
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