[Samba] Samba4 Disable USB ports

Achim Gottinger achim at ag-web.biz
Mon May 25 10:58:08 MDT 2015 

Hello Gabriel,


Am 25.05.2015 um 13:23 schrieb Gabriel Franca:
> Good morning List
>
> On Friday I had to leave so I could no longer continue with our lab.
> Weekend and holy all have to rest as much as possible. = D
> So I'm back and I will put the smb.conf for analysis.
>
> # Global parameters
>
> [global]
>
> workgroup = CMC
>
> realm = CMC.CORP
>
> netbios name = SAMBA
>
> server role = active directory domain controller
>
> dns forwarder = 172.16.1.1
>
>
> # Habilitar Impressoras.
>
> printing = cups
>
> load printers = yes
>
> #Ativar a internacionalizacao: permitir caracteres acentuados pelo windows
>
> dos charset = CP850
>
> unix charset = ISO8859-1
>
> # Tratar os arquivos que comecam com "." como ocultos para maquinas 
> Windows
>
> hidedotfiles = yes
>
>
>
> # nao tentar fazer um lock nestes arquivos
>
> veto files = /*.mp3/*.nws/*.{*}/
>
> veto oplock files = 
> /*.doc/*.xls/*.mdb/*.docx/*.DOC/*.DOCX/*.XLSX/*.xlsx/*.rtf/*.RTF/
>
>
> #Auditoria de Arquivos
>
> vfs objects = full_audit recycle
>
> full_audit:success = open, opendir, write, unlink, rename, mkdir, 
> rmdir, chmod, chown
>
> full_audit:prefix = %u|%I|%S
>
> full_audit:failure = none
>
> full_audit:facility = local5
>
> full_audit:priority = notice
>
> #Lixeira individual
>
> recycle:keeptree = yes
>
> recycle:versions = yes
>
> recycle:repository = /dados/trash/%U
>
> recycle:exclude = *.tmp, *.log, *.obj, ~*.*, *.bak, *.iso
>
> recycle:exclude_dir = tmp, cache
>
>
> [netlogon]
>
> # path = /var/lib/samba/sysvol/cmc.corp/scripts
>
> path = /dados/scripts
>
> read only = No
>
> acl_xattr:ignore system acl = yes
>
> [sysvol]
>
> path = /var/lib/samba/sysvol
>
> read only = No
>
> acl_xattr:ignore system acl = yes
>
>
> [home]
>
> comment = Diretorio Pessoal de Cada Usuario
>
> path = /dados/users/%U
>
> browseable = No
>
> read only = No
>
>
> [dpto]
>
> comment = Pasta Departamental
>
> path = /dados/dpto
>
> read only = No
>
> #Bloqueio de extensoes de midia no samba
>
> veto files = /*.mp3/*.nws/*.{*}/*.avi/*.mpeg/*.mpg/*.wma/*.wmv/*.exe
>
> #nao tentar fazer um lock nesses arquivos
>
> veto oplock files = 
> /*.doc/*.xls/*.mdb/*.docx/*.DOC/*.DOCX/*.XLSX/*.xlsx/*.rtf/*.RTF/
>
> [share]
>
> comment = Pasta Compartilhada
>
> path = /dados/share
>
> read only = No
>
> #Bloqueio de extensoes de midia no samba
>
> # veto files = /*.mp3/*.nws/*.{*}/*.avi/*.mpeg/*.mpg/*.wma/*.wmv/*.exe
>
> #nao tentar fazer um lock nesses arquivos
>
> veto oplock files = 
> /*.doc/*.xls/*.mdb/*.docx/*.DOC/*.DOCX/*.XLSX/*.xlsx/*.rtf/*.RTF/
>
>
> [lixeira]
>
>
> path = /dados/trash/%U
>
> read only = No
>
>
> [printers]
>
> comment = Todas as Impressoras
>
> path = /var/spool/samba
>
> print ok = yes
>
> guest ok = yes
>
> browseable = yes
>
>
> if possible give any tips to improve my setup will be very grateful.
>
> Sincerely,
>
> Gabriel Franca
Beside a few minor things like veto oplocks and cahrset settings may be 
not needed anymore, i can not see issues in your smb.conf.
xattrs seem to work as expected also. Does acl's work? You can test that 
with getfacl /var/lib/saba/sysvol for example.
Example output on my setup.
getfacl: Entferne führende '/' von absoluten Pfadnamen
# file: var/lib/samba/sysvol/
# owner: root
# group: 3000000
user::rwx
user:root:rwx
user:3000000:rwx
user:3000001:r-x
user:3000002:rwx
user:3000003:r-x
group::rwx
group:3000000:rwx
group:3000001:r-x
group:3000002:rwx
group:3000003:r-x
mask::rwx
other::---
default:user::rwx
default:user:root:rwx
default:user:3000000:rwx
default:user:3000001:r-x
default:user:3000002:rwx
default:user:3000003:r-x
default:group::---
default:group:3000000:rwx
default:group:3000001:r-x
default:group:3000002:rwx
default:group:3000003:r-x
default:mask::rwx

I googled your error messages and found one old thread here with an 
similar issue, reprovisioning fixed it in this case.

But before that you can enable debugging output abit by adding -d[1-9]

Try for example.
samba-tool ntacl sysvolcheck -d3

achim~
>
>> Em 22/05/2015, à(s) 12:26, Achim Gottinger <achim at ag-web.biz 
>> <mailto:achim at ag-web.biz>> escreveu:
>>
>> Hi Gabriel,
>>
>> I"ll answer to the lists email adress.
>>
>> Am 22.05.2015 um 16:54 schrieb Gabriel Franca:
>>> follows the output of the command:
>>>
>>>  attr -l / var / lib / samba / sysvol
>>> Attribute "SGI_ACL_FILE" has a 124 byte value for / var / lib / 
>>> samba / sysvol
>>> Attribute "SGI_ACL_DEFAULT" has a 124 byte value for / var / lib / 
>>> samba / sysvol
>>> Attribute "NTACL" has a 320 byte value for / var / lib / samba / sysvol
>>>
>>> att,
>>>
>>> Gabriel Franca
>> Thank you for the test xfs should have xattrs enabled by default. Can 
>> you post your smb.conf here please.
>>
>> Another xattr test i found here 
>> https://www.samba.org/samba/docs/man/manpages/vfs_acl_xattr.8.html is
>>
>> getfattr -n security.NTACL /var/lib/samba/sysvol
>>
>> Also are there any other errors if you run sysvolreset?
>>
>> achim~
>>>
>>>
>>>> Em 22/05/2015, à(s) 10:40, Achim Gottinger <achim at ag-web.biz 
>>>> <mailto:achim at ag-web.biz> <mailto:achim at ag-web.biz>> escreveu:
>>>>
>>>> Hello Gabriel,
>>>>
>>>>
>>>> Am 22.05.2015 um 15:23 schrieb Gabriel Franca:
>>>>> Good morning people,
>>>>>
>>>>> I make the case that Achim Gottinger passed.
>>>>>
>>>>> samba-tool ntacl sysvolreset and received the following information:
>>>>> Segmentation fault (core of the recorded image)
>>>>>
>>>>> then sent a samba-tool ntacl sysvolcheck and received the following:
>>>>> ERROR (<type 'exceptions.TypeError'>): uncaught exception - (61 
>>>>> 'No data available')
>>>>>  File 
>>>>> "/usr/lib64/python2.7/site-packages/samba/netcmd/__init__.py", 
>>>>> line 175, in _run
>>>>>    self.run return (* args, ** kwargs)
>>>>>  File "/usr/lib64/python2.7/site-packages/samba/netcmd/ntacl.py", 
>>>>> line 249, in run
>>>>>    lp)
>>>>>  File 
>>>>> "/usr/lib64/python2.7/site-packages/samba/provision/__init__.py", 
>>>>> line 1717, in checksysvolacl
>>>>>    fsacl = getntacl (lp, dir_path, direct_db_access = 
>>>>> direct_db_access, service = SYSVOL_SERVICE)
>>>>>  File "/usr/lib64/python2.7/site-packages/samba/ntacls.py", line 
>>>>> 73, in getntacl
>>>>>    xattr.XATTR_NTACL_NAME)
>>>>>
>>>>> Will there this the source of my problem? hehehehe
>>>>>
>>>>> Remembering that I'm using Centos 7 and Samba version 
>>>>> 4.1.17-Sernet-RedHat-11.el7
>>>>>
>>>>> Sincerely,
>>>>>
>>>>> Gabriel Franca
>>>>>
>>>>>
>>>> This error looks like you have not enabled xattrs on the partition 
>>>> sysvol resides. In case it is an ext3/4 partition do you have acl 
>>>> and user_xattr in the mount options?
>>>>
>>>> What is the output of
>>>>
>>>> attr -l /var/lib/samba/sysvol
>>>>
>>>> use the localtion of the sysvol folder on your server in above example.
>>>> On my server i get
>>>>
>>>> Attribute "NTACL" has a 320 byte value for /var/lib/samba/sysvol
>>>>
>>>> achim~
>>>>>
>>>>>> Em 22/05/2015, à(s) 11:22, Achim Gottinger <achim at ag-web.biz 
>>>>>> <mailto:achim at ag-web.biz> <mailto:achim at ag-web.biz>> escreveu:
>>>>>>
>>>>>> Hello Gabriel,
>>>>>>
>>>>>> I recommend you use
>>>>>>
>>>>>> gpupdate /force
>>>>>>
>>>>>> on the windows command line after login.
>>>>>> The results of above command can be checked afterwards with the 
>>>>>> "gpresults"  command.
>>>>>>
>>>>>> Can be you have an permission problem on your samba server. Only 
>>>>>> skimmed ofver the thread but did you try
>>>>>> samba-tools ntacl sysvolreset
>>>>>> on your samba server?
>>>>>>
>>>>>> achim~
>>>>>>
>>>>>> Am 22.05.2015 um 12:08 schrieb Gabriel Franca:
>>>>>>> Good morning Daniel,
>>>>>>>
>>>>>>> The amendment that I spoke have to be done on the server.
>>>>>>>
>>>>>>> All user created in Samba4 receives the "Domain Users" group as 
>>>>>>> primary.
>>>>>>>
>>>>>>> I did several tests on the GPO to no avail.
>>>>>>>
>>>>>>> When I took the User of the "Domain Users" and put in "Domain 
>>>>>>> Admins" the GPO to make any changes now operates.
>>>>>>>
>>>>>>> I believe that because of the "Domain Users" did not have 
>>>>>>> privileges to edit the GPO record in the station can not be applied.
>>>>>>>
>>>>>>> I wonder if the guys who are using Samba 4, is using 
>>>>>>> successfully GPOS the "Domain Users"
>>>>>>>
>>>>>>> Sincerely,
>>>>>>>
>>>>>>> Gabriel Franca
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Em 22/05/2015, à(s) 09:01, Daniel Carrasco Marín 
>>>>>>>> <danielmadrid19 at gmail.com <mailto:danielmadrid19 at gmail.com> 
>>>>>>>> <mailto:danielmadrid19 at gmail.com>> escreveu:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> 2015-05-22 13:32 GMT+02:00 Gabriel Franca 
>>>>>>>> <gabriel.franca at gmail.com <mailto:gabriel.franca at gmail.com> 
>>>>>>>> <mailto:gabriel.franca at gmail.com><mailto:gabriel.franca at gmail.com>>:
>>>>>>>>
>>>>>>>> I found it strange more and something I have already noticed a 
>>>>>>>> while.
>>>>>>>>
>>>>>>>> No GPO is applied when the User is the "Domain Users", so I 
>>>>>>>> wonder if I'm doing something wrong or I have to change something.
>>>>>>>>
>>>>>>>> I believe the "Domain Users" are not allowed to change the 
>>>>>>>> Windows registry so the issue.
>>>>>>>>
>>>>>>>> Sincerely,
>>>>>>>>
>>>>>>>> Gabriel Franca
>>>>>>>>
>>>>>>>>
>>>>>>>> I don't know if is a Windows problem, but i've got the same 
>>>>>>>> behavior trying to set Firewall rules. I've fixed the problem 
>>>>>>>> changing the "Domain Users" in GPO "Security Filter" for 
>>>>>>>> "Authenticated Users" and now is working fine.
>>>>>>>>
>>>>>>>> I hope this help.
>>>>>>>>
>>>>>>>> Greetings!!
>>>>>>>>
>>>>>>>>> Em 22/05/2015, à(s) 02:31, Neil <nwilson123 at gmail.com 
>>>>>>>>> <mailto:nwilson123 at gmail.com> 
>>>>>>>>> <mailto:nwilson123 at gmail.com><mailto:nwilson123 at gmail.com>> 
>>>>>>>>> escreveu:
>>>>>>>>>
>>>>>>>>> Good morning everyone,
>>>>>>>>>
>>>>>>>>> Gabriel: I haven't had a chance to test this yet, but I'm also 
>>>>>>>>> needing the same IE: Domain Users to have the GPO applied. Did 
>>>>>>>>> you come right with this?
>>>>>>>>>
>>>>>>>>> Andrey: Thank you for letting me know about the SysVol 
>>>>>>>>> replication across DC's, I haven't enabled this yet and will 
>>>>>>>>> be doing so, is there anything I should watch out for? I'll 
>>>>>>>>> just be using the 
>>>>>>>>> "https://wiki.samba.org/index.php/SysVol_Replication<https://wiki.samba.org/index.php/SysVol_Replication> 
>>>>>>>>> <https://wiki.samba.org/index.php/SysVol_Replication%3Chttps://wiki.samba.org/index.php/SysVol_Replication%3E> 
>>>>>>>>> <https://wiki.samba.org/index.php/SysVol_Replication<https://wiki.samba.org/index.php/SysVol_Replication> 
>>>>>>>>> <https://wiki.samba.org/index.php/SysVol_Replication%3Chttps://wiki.samba.org/index.php/SysVol_Replication%3E>>" 
>>>>>>>>> because I don't require Bi-Directional Replication.
>>>>>>>>>
>>>>>>>>> Thank you.
>>>>>>>>>
>>>>>>>>> Regards.
>>>>>>>>>
>>>>>>>>> Neil Wilson.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Thu, May 21, 2015 at 1:22 PM, Gabriel Franca 
>>>>>>>>> <gabriel.franca at gmail.com <mailto:gabriel.franca at gmail.com> 
>>>>>>>>> <mailto:gabriel.franca at gmail.com><mailto:gabriel.franca at gmail.com> 
>>>>>>>>> <mailto:gabriel.franca at gmail.com<mailto:gabriel.franca at gmail.com>>> 
>>>>>>>>> wrote:
>>>>>>>>> Good morning friends !!!
>>>>>>>>>
>>>>>>>>> I am following this topic and performed some tests to validate 
>>>>>>>>> the process and noted the following.
>>>>>>>>>
>>>>>>>>> 1) when the User is the "Domain Users" GPO is not applied.
>>>>>>>>>
>>>>>>>>> 2) when the user is the "Domain Admins" the GPO is applied.
>>>>>>>>>
>>>>>>>>> Is there any way to apply the GPOS "Domain Users" ???
>>>>>>>>>
>>>>>>>>> Sincerely,
>>>>>>>>>
>>>>>>>>> Gabriel Franca
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Em 20/05/2015, à(s) 09:37, Neil <nwilson123 at gmail.com 
>>>>>>>>>> <mailto:nwilson123 at gmail.com> 
>>>>>>>>>> <mailto:nwilson123 at gmail.com><mailto:nwilson123 at gmail.com> 
>>>>>>>>>> <mailto:nwilson123 at gmail.com<mailto:nwilson123 at gmail.com>>> 
>>>>>>>>>> escreveu:
>>>>>>>>>>
>>>>>>>>>> Hi Louis,
>>>>>>>>>>
>>>>>>>>>> Thank you very much for your speedy response. I'll definitely 
>>>>>>>>>> go ahead and
>>>>>>>>>> investigate further.
>>>>>>>>>>
>>>>>>>>>> Much appreciated.
>>>>>>>>>>
>>>>>>>>>> Regards.
>>>>>>>>>>
>>>>>>>>>> Neil Wilson.
>>>>>>>>>>
>>>>>>>>>> On Wed, May 20, 2015 at 1:24 PM, L.P.H. van Belle 
>>>>>>>>>> <belle at bazuin.nl <mailto:belle at bazuin.nl> 
>>>>>>>>>> <mailto:belle at bazuin.nl><mailto:belle at bazuin.nl> 
>>>>>>>>>> <mailto:belle at bazuin.nl<mailto:belle at bazuin.nl>>> wrote:
>>>>>>>>>>
>>>>>>>>>>> yes, this is possible, by GPO.
>>>>>>>>>>>
>>>>>>>>>>> In GPO, go to:
>>>>>>>>>>> (user or computer )Configuration
>>>>>>>>>>>       - Policy
>>>>>>>>>>>               – Administrative template
>>>>>>>>>>>                       – System
>>>>>>>>>>>                               – Removable storage Access
>>>>>>>>>>>
>>>>>>>>>>> Play with these settings to get what you want.
>>>>>>>>>>>
>>>>>>>>>>> for Managing Hardware Restrictions via Group Policy read :
>>>>>>>>>>> http://technet.microsoft.com/en-us/magazine/cc138012.aspx<http://technet.microsoft.com/en-us/magazine/cc138012.aspx> 
>>>>>>>>>>> <http://technet.microsoft.com/en-us/magazine/cc138012.aspx%3Chttp://technet.microsoft.com/en-us/magazine/cc138012.aspx%3E> 
>>>>>>>>>>> <http://technet.microsoft.com/en-us/magazine/cc138012.aspx<http://technet.microsoft.com/en-us/magazine/cc138012.aspx> 
>>>>>>>>>>> <http://technet.microsoft.com/en-us/magazine/cc138012.aspx%3Chttp://technet.microsoft.com/en-us/magazine/cc138012.aspx%3E>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Greetz,
>>>>>>>>>>>
>>>>>>>>>>> Louis
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> -----Oorspronkelijk bericht-----
>>>>>>>>>>>> Van:nwilson123 at gmail.com <http://gmail.com> 
>>>>>>>>>>>> <mailto:nwilson123 at gmail.com><mailto:nwilson123 at gmail.com> 
>>>>>>>>>>>> <mailto:nwilson123 at gmail.com<mailto:nwilson123 at gmail.com>>
>>>>>>>>>>>> [mailto:samba-bounces at lists.samba.org<mailto:samba-bounces at lists.samba.org> 
>>>>>>>>>>>> <mailto:samba-bounces at lists.samba.org<mailto:samba-bounces at lists.samba.org>>] 
>>>>>>>>>>>> Namens Neil
>>>>>>>>>>>> Verzonden: woensdag 20 mei 2015 12:10
>>>>>>>>>>>> Aan: samba
>>>>>>>>>>>> Onderwerp: [Samba] Samba4 Disable USB ports
>>>>>>>>>>>>
>>>>>>>>>>>> Hi guys,
>>>>>>>>>>>>
>>>>>>>>>>>> I'm running a Sernet-samba-ad-4.1.17-11.el6.x86_64 PDC with 
>>>>>>>>>>>> another 4
>>>>>>>>>>>> Samba4 DC's all joined to the same AD domain myorg.local
>>>>>>>>>>>>
>>>>>>>>>>>> My client wants me to disable all USB ports for all the users
>>>>>>>>>>>> joined to the
>>>>>>>>>>>> domain.
>>>>>>>>>>>>
>>>>>>>>>>>> Is it possible to do this via a group policy so that users
>>>>>>>>>>>> logging onto any
>>>>>>>>>>>> of the DC's will not be able to use their USB ports?
>>>>>>>>>>>>
>>>>>>>>>>>> I currently admin my AD with a combination of the samba-tool
>>>>>>>>>>>> as well as the
>>>>>>>>>>>> AD Users and Groups MMC Windows utility.
>>>>>>>>>>>>
>>>>>>>>>>>> Any guidance is greatly appreciated.
>>>>>>>>>>>>
>>>>>>>>>>>> Thank you.
>>>>>>>>>>>>
>>>>>>>>>>>> Regards.
>>>>>>>>>>>>
>>>>>>>>>>>> Neil Wilson
>>>>>>>>>>>> --
>>>>>>>>>>>> To unsubscribe from this list go to the following URL and 
>>>>>>>>>>>> read the
>>>>>>>>>>>> instructions: 
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>>>>>>>>>>>> <https://lists.samba.org/mailman/options/samba<https://lists.samba.org/mailman/options/samba> 
>>>>>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>> --
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>>>>>>>>>>> read the
>>>>>>>>>>> instructions: 
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>>>>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E> 
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>>>>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E>>
>>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> To unsubscribe from this list go to the following URL and 
>>>>>>>>>> read the
>>>>>>>>>> instructions: 
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>>>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E> 
>>>>>>>>>> <https://lists.samba.org/mailman/options/samba<https://lists.samba.org/mailman/options/samba> 
>>>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E>>
>>>>>>>>>
>>>>>>>> --
>>>>>>>> To unsubscribe from this list go to the following URL and read the
>>>>>>>> instructions: 
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>>>>>>>> <https://lists.samba.org/mailman/options/samba%3Chttps://lists.samba.org/mailman/options/samba%3E>
>>>>>>
>>>>>> --
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>>>>>> instructions: https://lists.samba.org/mailman/options/samba
>>>>>
>>>>
>>>
>>
>> -- 
>> To unsubscribe from this list go to the following URL and read the
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>

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