Red Hat / Fedora :: Samba Winbind Authentication With Windows 2003 - Multiple Server?

Jul 3, 2010

I've been searching around the web for help and have been really pulling my hair on this one. I have a Windows 2003 Server w/ AD on it. I have two linux machine, both running the same version of RHEL 5 (compute-1, compute-4)

When I log into compute-1, and do an "id dhuynh", I get this:
uid=1501(dhuynh) gid=1500(domain users) groups=1500(domain users),2013(dusers),1501(certsvc_dcom_access),1507 (BUILTIN+users)
When I log into compute-4, do do the same command, I get this:
uid=1500(dhuynh) gid=1504(domain users) groups=1504(domain users),1505(certsvc_dcom_access),1501(BUILTIN+user s)

Notice that the uid and gid are different. How do I get them to be the same? This is affective the file permissions in certain shared directories. I've check /etc/samba/smb.conf and they are identical. I also check /etc/nsswitch.conf and they are identical too.

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Debian Configuration :: Winbind / Samba Authentication Causes Segmentation Fault

Apr 26, 2010

I added my linux server to a windows AD using winbind / samba. Everything worked just fine. After changing the OS to Debian lenny x64 I get a "segmentation fault" when trying to change user passwords. I am using the exact same configuration, on my 32 bit Server everything works.

debian:~# passwd <user>
sgmentation fault
tail /var/log/syslog:
kernel: [689689.005934] passwd[11209]: segfault at 0 ip b7b84418 sp bfc37fc0 error 4 in pam_winbind.so[b7b7e000+b000]
Debian Lenny 5.0

[Code].....

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Wanting to join my CentOS5.3 to a windows 2003 active directory. Configured kerberos and samba.

Code:

[libdefaults]
default_realm = domain
dns_lookup_realm = false

[code].....

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Sep 7, 2010

I'm trying to set my openSUSE desktop up to use the printers on my office network via Samba. I managed to get it working in 11.2 but 11.3 is giving me some trouble.I am able to access the printers and use them but I have to enter my network credentials each time I print. In 11.2 I was able to "save" my username/password and was not required to do this. Are there any Samba packages I need to add in addition to the basic ones? There seems to be a lack of documentation on this particular subject, most is concerning Windows clients printing on Linux print servers.

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May 25, 2011

How do I turn winbind authentication off or vsftpd. I keep getting these error messages in the /var/log/ secure:vsftpd: pam_winbind(vsftpd:auth): request failed: No such user, PAM error was User not known to the underlying authentication module (10), NT error was NT_STATUS_NO_SUCH_USER.I already tried remarking out different things in the config files. Is it safe to remark out the winbind stuff in /etc/pam.d/system-auth if we are using the smbclient to connect to a Windows share?Why would you want to to use AD to authenticate users for something simple like FTP is beyond me.I merely want it to authenticate against local system users.

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Ubuntu Servers :: Use Samba+winbind To Authenticate Desktop Against A Windows 2008 R2 Domain

Aug 3, 2011

Intent is to use samba+winbind to authenticate Ubuntu desktop against a Windows 2008 R2 domain (seems like I was able to get it working temporarily but it stopped working after some time). Quick overview of the issue: winbind is failing to lookup group ID's for a domain user causing the domain user to receive group errors on login and an inability to use domain groups in other configuration (sudoers, etc)

- Very basic install, boot to Ubuntu Desktop 10.04 LTS 64bit install, basic install options, perform software updates

- Following an Ubuntu AD HowTo [URL]

- Install kerberos, samba, winbind packages

- Make changes to krb5.conf, smb.conf, files in pam.d/ (to make the home directory and restrict login based on group membership, which works even in the half-working state but requires SID instead of text name)

After a reboot I can login as a domain account but I get the following error(s):

groups: cannot find name for group ID #####

##### is usually a number that ranges from 10000 to 10020, based on the smb.conf line regarding idmap I will get multiple group errors (one for each group that the user belongs to that winbind can't lookup for whatever reason, some groups can be resolved - see below) If I log-out and then log-in as a local user I can run the following command: id username The output returns something similar to the following:

uid=10002(username) gid=10003(domain users) groups=10003(domain users),10033,10032,10031,10030,10029,10028,10027,1 0026,10025,10024,10023,10022,10021(some group),10020,10019,10018(some other group),10017,10016,10015,10014,10013,10012,10011(s ome other other group),10010,10009,10008,10007

On a working system (Ubuntu 10.10 and when 10.04 decides to work) each group is followed by parenthesis' and the name of the group, this result clearly shows that some groups can be looked up but for some reason other groups are failing An output of /var/log/samba/log.winbind produces the following entries (that are logged when you run the id command)

[2011/08/03 19:04:39, 1] winbindd/winbindd_ads.c:1137(lookup_groupmem)
lsa_lookupsids call failed with NT_STATUS_PIPE_BROKEN - retrying...
[2011/08/03 19:04:39, 1] winbindd/winbindd_ads.c:1137(lookup_groupmem)
lsa_lookupsids call failed with NT_STATUS_PIPE_BROKEN - retrying...

The above repeats for what looks to be each group that fails (based on count of entries)If I use wbinfo I can resolve text group name to SID and SID to GID

wbinfo -n groupname (returns proper SID)
wbinfo -s SID (returns proper text group name)
wbinfo -Y SID (returns proper linux mapped group ID)

Following that process for a group that my user belongs to that is not resolving (via the id username command) will return the group ID (GID) properly (even though id username fails to lookup info for that same GID) Version Information:

uname -a
Linux hostname 2.6.32-33-generic #71-Ubuntu SMP Wed Jul 20 17:27:30 UTC 2011 x86_64 GNU/Linux
lsb_release -a
No LSB modules are available.

[code]....

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Oct 21, 2010

I have Windows 2008R2 Server acting as Domain Controller for Windows7/XP clients. and CentOS 5.3 Installed configured as Samba Server, I want to make it as ADS member server so any user to login to any machine, and be able to access their Samba share.

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Sep 1, 2010

I'm trying to mount a Windows Server 2003 share in Fedora 13. With Fedora 8 and with RHEL 5.5 this works properly, but not with Fedora 13.

The mount point I'm using is /usr/eg

The symptoms are: Nautilus (the file browser) does not display the mount in the places or tree as a mounted drive. Using the file broser I can browse under file system down to the files on the server Programs cannot find the files under /usr/eg ie the files on the server.

Here is my fstab entry:

//192.168.1.40/eg /usr/eg cifs auto,user=<user>,password=<password>,rw,uid=500,gid=500,file_mode=0774._netdev 0 0

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Sep 11, 2010

I have setup a Centos5.5 VMWare guest with Samba and Winbind for Active Directory integration, using GUI tools. Authentication works flawlessly, with automatic home directory creation. What I want to achieve now is using local UNIX groups to controll access to shared folders, to avoid bothering AD administrators with groups management. This is my smb.conf global section:

workgroup = COGITANS
password server = domainserver.hq.cogitans.it
realm = HQ.COGITANS.IT
security = ads

[code]....

'finance' is a local UNIX group where I added user 'COGITANSalberto' (I also tried with 'alberto') as a secondary group (primary group is 'domain users' and it cannot be changed). I am sure the user is added, because it is listed in 'getent group'. If I specify user COGITANSalberto in valid users it works, i.e. only that use can access the share, the others get a NT_STATUS_ACCESS_DENIED error. But if I use +finance, access is denied to everybody, and this is the log:

[2010/09/11 14:12:37, 10] smbd/share_access.c:user_ok_token(211)
User COGITANSalberto not in 'valid users'
[2010/09/11 14:12:37, 2] smbd/service.c:make_connection_snum(617)
user 'COGITANSalberto' (from session setup) not permitted to access this share (finance)

[code]....

It seems like winbind cannot recognize finance as a local group. For the same reason, I guess, 'force group = finance' does not work either (files are created with 'domain users' group ownership). My /etc/nsswitch.conf:

passwd: files winbind
shadow: files winbind
group: files winbind

Grants and ownership on the '/repositories/shared/finance' folder are

root:domain users with permissions 775

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Nov 12, 2010

Have recently setup Samba on a fresh install of Fedora 14 so that I can use it as a workstation in a Windows 2003 (win2k3) domain.

The install of Samba seems to have worked as I can connect to the Domain using ADS and kerberos. selinux and firewall have been disabled until I have it working 100%

The problem lies when i try to login to Gnome or TTY. It begins to create the home directory for the domain user logging in but after a certain process Fedora logs the user out of the system.

Have looked through several log files (/var/log/messages, log.winbindd, log.winbindd-dc-connect) but am unable to debug it any further.

Have posted the config files below which shows the Fedora machine is successfully connected to the domain as it lists its groups, users and validates logon credentials - it just won't logon!

Where i can go about debugging. Also if you need additional configs.

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Mar 1, 2009

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Jun 1, 2011

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The Ubuntu Server has a 40GB SSD in it. I just installed a 2TB Hard drive (same make and model of the two in the Windows Server) and made the filesystem for it ext3.

First thing I did was just throw the 2 2TB Hard Drives in the new server, and tried to set them up as a software RAID. After it prompt me to erase the drives, I strayed away from that idea.

My end goal is having Ubuntu machine completely replace the Windows machine, so I'll need to setup Samba (which I'm sure I can figure that part out).

How can I get all the data off the 2TB Hard Drives that are using NTFS onto a RAID in the Ubuntu machine with an ext3 filesystem?

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So I used to boot in Win XP to run mstsc. But the XP partition doesn't boot anymore, no way to fix it, so I need to try the Ubuntu rdp clients.

I even installed a Win XP in a VM (VirtualBox), but now mstsc doesn't connect, it ends due to timeout (as if the Windos Server "knows" I'm not a windows family client)

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My systems details:
OS - Red Hat Enterprise Linux Server release 5 (Tikanga)
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