[Samba] net groupmap / domain admins problem - Amazon prize

Andrew Judge ajudge at grovenetworks.com
Thu Jan 8 14:06:14 GMT 2004

Okay, I did all the below successfully.  I actually had the old SID from the
other PDC MACHINE.SID and net setlocalsid S-1-fdsfsd - so didn't modify the

Still no luck with the admin rights.  It will log into the domain and can
see the domain groups and I can add them to local groups.  It even uses the
netlogon scripts.  Do you need more info?  I think we are close though.

-----Original Message-----
From: John H Terpstra [mailto:jht at samba.org]
Sent: Wednesday, January 07, 2004 11:42 PM
To: Andrew Judge
Cc: samba at lists.samba.org
Subject: Re: [Samba] net groupmap / domain admins problem - Amazon prize

1. Stop Samba
2. Delete the group_mapping.tdb file.
3. Restart Samba
	- the default Domain Groups will automatically be created if you
	  are NOT using LDAP ldapsam.
4. Map your groups as follows:

net groupmap modify ntgroup="Domain Users" unixgroup=users
net groupmap modify ntgroup="Domain Admins" unixgroup=root
net groupmap modify ntgroup="Domain Guests" unixgroup=nobody

Add any Domain Groups you may want. Do tie them to existing (manually
created UNIX groups) eg:

groupadd engineers
net groupmap add ntgroup="Domain Engineers" unixgroup=engineers type=d

groupadd ntadmins
net groupmap add ntgroup="Domain Power Users" unixgroup=ntadmins type=d

PS: If you have a problem with these commands email me, I'll help you.

5. Add all users who should have Domain Admin rights to the UNIX root
group in /etc/group, like this:


6. Add all users who should have Workstation Admin rights (Power Users) to
the UNIX ntadmins group in /etc/group, like this:


7. Verify that the groups are correctly mapped:

net groupmap list.

8. Now: On every windows client machine add:

	a) Domain Admins to the Local Administrators Group
	b) Domain Power Users to the Local Power Users Group

> Now... I migrated from 2.2.3a to the above and I have all the tdb and I
> cahnged the SID to the last PDC.  Anyway, how would I get the right SID?
> have NTUSER.DAT files that I can run profiles against to read them.  Would
> that help?

You can use the Samba-3.0.x tools 'profiles' to reset the SID in the

To obtain the domain SID just run:

	net getlocalsid

> First one that can point me in the right direction to get this resolved -
> I'll buy them a amazon gift cert for $50.  Beats going bald from pulling
> my hair.

It's a deal man!

- John T.
John H Terpstra
Email: jht at samba.org

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