[Samba] groupmap + ldapsam questions

John H Terpstra jht at Samba.Org
Tue Nov 9 19:01:22 GMT 2004


Please refer to the "Samba-3 by Example" book Chapters 5 and 6 for detailed 
worked examples of how to use Samba-3 with LDAP. You can download the latest 
version of this book from: http://www.samba.org/samba/docs/Samba-Guide.pdf

When you have it all figured out, please send me your patches to help make the 
Samba-HOWTO-Collection much clearer. We very much appreciate user 
contributions as we believe that the knowledge of the masses makes Samba a 
better proposition.

I apologize for any lack of clarity in the Samba-HOWTO-Collection - but do 
point out that it is a "green" document. This means it is constantly updated, 
either as I receive tips, suggestions - and in particular contributions. The 
latest version can be found on the Samba web site as:

I look forward to your assistance to make Samba a better product.

John T.

On Tuesday 09 November 2004 11:37, Etienne Goyer wrote:
> Hi,
> Two questions regarding the use of group map combined with ldapsam.
> First, the Official HOWTO is relatively unclear about what need to be
> done wrt to group map when using ldapsam.  It state it is the
> responsability of the admin to add the group map to the ldap backend,
> but nothing else.  What need to be in an LDAP groupmap object ?  I tried
> the following LDIF, and it seem to work using "net groupmap list" :
> # Domain Users, Group, domain.com
> dn: displayName=Domain Users,ou=Group,dc=domain,dc=com
> objectClass: sambaSidEntry
> objectClass: sambaGroupMapping
> gidNumber: 100
> description: Netbios Domain Users
> sambaSID: S-1-5-21-3952100455-2014430628-1234567890-513
> sambaGroupType: 2
> displayName: Domain Users
> Notice that the object is not of objectClass posixAccount.  Also not
> that the gidNumber is the one of the "users" group, defined in
> /etc/group.  Similarly, I want to map the "Domain Guests" group to Unix
> group nobody, and "Domain Admins" to group root.  Are there implication
> I should be aware of ?  Any better way to achieve similar results ?
> Also, I can list group map with "net groupmap list", but I fail to add
> any groupmap.  Example :
> [root at server root]# net groupmap add ntgroup=blah unixgroup=wheel
> No rid or sid specified, choosing algorithmic mapping
> adding entry for group blah failed!
> Logs are silent.  How come ?  Are we supposed to managed the group map
> at the LDAP level, and forego the use of "net groupmap" for this purpose?
> Thanks very much for your input !
> Etienne Goyer

John H Terpstra
Samba-Team Member
Phone: +1 (650) 580-8668

The Official Samba-3 HOWTO & Reference Guide, ISBN: 0131453556
Samba-3 by Example, ISBN: 0131472216
Hardening Linux, ISBN: 0072254971
Other books in production.

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