[Samba] Grant only one AD group to samba share ?

[Newman, John W]

>Which version of Samba are you using?    
Samba version 3.5.11

>What does the idmap backend configuration for winbind look like? 
Well.. I'm not really sure what that is (I inherited this project).  In smb.conf all he has here is:  idmap uid = 10000-20000     idmap gid=10000-20000 .... I don't see idmap backend = set at all in here.  That is probably a big part of the problem isn't it?   

>Does testparm yield any errors?
ERROR: the 'winbind separator' parameter must be a single character.    Hmm.. I just changed that to a single \ , and our existing authentication service still works fine, but the share behaves no differently.  The extra \ was probably in error from this file being edited with sed.

>Do getent group and wbinfo -g return the expected results?
getent group shows all of the local linux groups on this machine - no AD groups.  Is that expected?
wbinfo -g shows the windows groups fine, the only thing that's odd is is all of the groups on this domain show in lower case.  They may or may not be that way in their AD, I can't see for sure.   (We are forcing a linux machine into someones windows network.... ) 

>Are nsswitch.conf and PAM configured for authentication?
For what kind of authentication?   /etc/nsswitch and /etc/pam/* are untouched from the defaults.  

All that has really been setup so far is an apache service that uses mod_auth_ntlm_winbind to authenticate users of a webpage to their DC.  We are now trying to expand that samba/winbind stack over into sharing a folder.  So, we probably do need to look at modifying those files, and id mapping, to have a samba share authenticate against the DC.  Right?  For some reason I figured this part would just work since the join already happened.

Thanks again!


-----Original Message-----
From: Dale Schroeder [mailto:dale at BriannasSaladDressing.com] 
Sent: Tuesday, May 22, 2012 14:51
To: Newman, John W
Cc: samba at lists.samba.org
Subject: Re:[Samba] Grant only one AD group to samba share ?

A few questions that might narrow things -

Which version of Samba are you using?
What does the idmap backend configuration for winbind look like?
Does testparm yield any errors?
Do getent group and wbinfo -g return the expected results?
Are nsswitch.conf and PAM configured for authentication?
http://www.enterprisenetworkingplanet.com/netsysm/article.php/3502441/Join-Linux-to-Active-Directory-With-Winbind.htm

On 05/22/2012 1:01 PM, Newman, John W wrote:
> Thanks..
>
> Unfortunately neither suggestion worked
>
> chgrp still just says "invalid group"
>
> valid users  = @"DOMAIN\\My Group" behaves the same as I described in the OP.  Valid credentials = access denied ; invalid credentials = invalid name or bad password.    I already tried all sorts of things in valid users, but nothing is the magic string I need.
>
> Any other ideas?
>
> Thanks for the help so far, much appreciated!!
>
> -----Original Message-----
> From: samba-bounces at lists.samba.org 
> [mailto:samba-bounces at lists.samba.org] On Behalf Of steve
> Sent: Tuesday, May 22, 2012 04:59
> To: samba at lists.samba.org
> Subject: Re: [Samba] Grant only one AD group to samba share ?
>
> On 21/05/12 23:36, Dale Schroeder wrote:
>> On 05/21/2012 3:42 PM, Newman, John W wrote:
>
>>> Thanks for the suggestion, but .. that doesn't work ...
>>>
>>>
>>> chgrp My\ Group /media/share
>>> chgrp: invalid group: `My Group'
>>>
>>>
>>> "My Group" is a windows AD group, not a local linux group. The 
>>> machine is "joined" to the windows domain through "net ads join", 
>>> but I don't think the security is that tightly integrated. I don't 
>>> have windows groups mapped to linux groups I've created or anything like that.
>>> chgrp is expecting a linux group. Right?
>>>
>>> Probably I am missing something, or you guys need more information.
>>> Any thoughts?
> Hi
> Sorry. I forgot about winbind (we use nss-pam-ldapd). With winbind running that should read:
>
> chgrp MYDAOMAIN\\My\ Group /media/share
>
> Cheers,
> Steve
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