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William R. Lorenz

2004-May-13 22:19 UTC

[Samba] Winbind ADS Issues w/ TONS of Pre-Research

Samba Team,

I've been trying to get my Samba server to authenticate users against a
Windows 2000 Active Directory domain controller, and it just doesn't work.  
I've encountered a TREMENDOUS amount of postings from people who have run
into the same issue, and there's never any responses with a resolution.  
I must have viewed more than 500 postings over the course of the day.

I have a seemingly valid Samba configuration file.  All of the `wbinfo
-u`, `wbinfo -g`, `getent passwd`, and `getent group` commands work just
fine.  Howver, `wbinfo -t` and `wbinfo -a` don't work, and I can't
authenticate users against the domain controller.  As an example:

  [root@nasone samba]# net ads join -U Administrator
  Administrator's password:
  [2004/05/13 17:49:30, 0] libads/ldap.c:ads_add_machine_acct(1006)
    Host account for nasone already exists - modifying old account
  Using short domain name -- ECHUDSON
  Joined 'NASONE' to realm 'HUDSON-OFFICE.ECEDIINC.COM'
  [root@nasone samba]# net rpc join -U Administrator
  Password:
  Joined domain ECHUDSON.
  [root@nasone samba]# wbinfo -t
  checking the trust secret via RPC calls failed
  error code was NT_STATUS_UNSUCCESSFUL (0xc0000001)
  Could not check secret
  [root@nasone samba]#

After trying to do the `wbinfo -t`, I see the following in
'winbindd.log':

  [2004/05/13 17:49:41, 2] 
    libsmb/cliconnect.c:cli_session_setup_kerberos(535)
    Doing kerberos session setup
  [2004/05/13 17:49:41, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
    rpc_auth_pipe: wrong schannel auth len 24
  [2004/05/13 17:49:41, 0] 
    rpc_client/cli_netlogon.c:cli_nt_setup_creds(249)
    cli_nt_setup_creds: request challenge failed
  [2004/05/13 17:49:41, 2] 
    nsswitch/winbindd_misc.c:winbindd_check_machine_acct(98)
    Checking the trust account password returned NT_STATUS_UNSUCCESSFUL

I am using Samba 3.0.4, as distributed in Fedora Core 1 RPM format on the 
main Samba website @ http://www.samba.org/.  Here's the details:

  [root@nasone samba]# rpm -qa | grep ^samba
  samba-common-3.0.4-2
  samba-client-3.0.4-2
  samba-3.0.4-2
  [root@nasone samba]# rpm -qa | grep ^krb5
  krb5-libs-1.3.1-6
  krb5-workstation-1.3.1-6
  [root@nasone samba]#

The output of `wbinfo -a` produces the following:

  [root@nasone samba]# wbinfo -a Administrator
  plaintext password authentication failed
  error code was NT_STATUS_NO_SUCH_USER (0xc0000064)
  error messsage was: No such user
  Could not authenticate user Administrator with plaintext password
  challenge/response password authentication failed
  error code was NT_STATUS_NO_LOGON_SERVERS (0xc000005e)
  error messsage was: No logon servers
  Could not authenticate user Administrator with challenge/response
  [root@nasone samba]#

And this results in the following in 'winbindd.log':

  [2004/05/13 17:53:04, 2] 
  libsmb/cliconnect.c:cli_session_setup_kerberos(535)
    Doing kerberos session setup
  [2004/05/13 17:53:04, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
    rpc_auth_pipe: wrong schannel auth len 24
  [2004/05/13 17:53:04, 0] 
    rpc_client/cli_netlogon.c:cli_nt_setup_creds(249)
    cli_nt_setup_creds: request challenge failed
  [2004/05/13 17:53:04, 2] 
    nsswitch/winbindd_pam.c:winbindd_pam_auth_crap(612)
    NTLM CRAP authentication for user [ECHUDSON]\[Administrator] returned 
    NT_STATUS_NO_LOGON_SERVERS (PAM: 4)

NTLM CRAP authentication is right -- this just doesn't want to work! ;)

Here's the contents of my '/etc/samba/smb.conf' configuration file:

  [root@nasone samba]# grep -v ^\; /etc/samba/smb.conf
  [global]
    workgroup = ECHUDSON
    realm = HUDSON-OFFICE.LOCAL
    server string = NASONE
    hosts allow = 10.0.0.0/24
    load printers = no

    security = ads
    auth methods = winbind
    password server = ARIEL
    name resolve order = bcast wins host
    wins server = 10.0.0.150 10.0.0.151

    log level = 2
    log file = /var/log/samba/samba-global.log
    log file = /var/log/samba/%m.log
    max log size = 0

    winbind separator = +
    encrypt passwords = yes
    idmap uid = 10000-20000
    idmap gid = 10000-20000
    winbind enum users = yes
    winbind enum groups = yes
    winbind cache time = 15
    template shell = /sbin/nologin
    template homedir = /dev/null/%D/%U

    socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
    interfaces = 10.0.0.180/24 10.0.1.180/24

    os level = 33
    local master = no
    domain master = no
    preferred master = no
    domain logons = no

    wins support = no
    dns proxy = no

  [volume01]
    comment = volume01
    path = /mnt/volumes/lv01
    public = no
    writable = no
    printable = no
    valid users = @"ECHUDSON+Domain Admins"
    write list = @"ECHUDSON+Domain Admins"
    create mask = 0664
    directory mask = 0775
    nt acl support = yes
  [root@nasone samba]#

Here's a one example of other people having the same issue (I searched
long and hard for any resolutions many of these had found, to no avail!):

  http://lists.samba.org/archive/samba-technical/2003-July/030983.html

I'd grab others, but I've already closed lots of browser windows. ;)

Here's some additional Kerberos information this is probably pertinent:

  [root@nasone root]# kinit administrator@HUDSON-OFFICE.LOCAL
  Password for administrator@HUDSON-OFFICE.LOCAL:
  [root@nasone root]# klist
  Ticket cache: FILE:/tmp/krb5cc_0
  Default principal: administrator@HUDSON-OFFICE.LOCAL

  Valid starting     Expires            Service principal
  05/13/04 18:13:23  05/14/04 04:14:36  
  krbtgt/HUDSON-OFFICE.ECEDIINC.COM@HUDSON-OFFICE.LOCAL
          renew until 05/14/04 18:13:23
  05/13/04 18:15:33  05/14/04 04:14:36  ariel$@HUDSON-OFFICE.LOCAL
          renew until 05/14/04 18:13:23

  Kerberos 4 ticket cache: /tmp/tkt0
  klist: You have no tickets cached
  [root@nasone root]#

And finally, let's get in a good test of Kerberos with the -k flag:

  [root@nasone root]# smbclient -U Administrator -k //10.0.0.150/GENSRVNT
  OS=[Windows 5.0] Server=[Windows 2000 LAN Manager]
  smb: \> ls
    .                                   D    0  Thu Apr  1 15:37:04 2004
    ..                                  D    0  Thu Apr  1 15:37:04 2004
    [ADDITIONAL DIRECTORY LISTING TRIMMED]
  smb: \> quit
  [root@nasone root]#

Does anyone have any ideas?!?!

--          _ 
__ __ ___ _| | William R. Lorenz <wrl@express.org> 
\ V  V / '_| | http://www.clevelandlug.net/ ; "Every revolution was 
 \./\./|_| |_| first a thought in one man's mind." - Ralph Waldo
Emerson

Anders Berg

2004-May-14 09:37 UTC

head link

[Samba] Winbind ADS Issues w/ TONS of Pre-Research

Hi,

just like:

http://lists.samba.org/archive/samba/2004-May/085521.html

http://lists.samba.org/archive/samba/2004-May/085808.html

huh?

Another *just* came in also:

http://lists.samba.org/archive/samba/2004-May/085881.html

Well, this one has many persons puzzeled. The best place so far is:

<http://www.linuxquestions.org/questions/showthread.php?s=&threadid=161506>http://www.linuxquestions.org/questions/showthread.php?s=&threadid=161506

I guess that the Samba community is still (which of course we are part of) 
does not have the solution for this problem, since it has not been 
answered/adressed by anybody in great lenght/detail. The HOWTO adresses it 
in: http://se.samba.org/samba/docs/man/howto/domain-member.html#ads-member 
but really that is no HOWTO. As long as it does not show you HOW-TO.

I also guess that some people that have followed this thread for a while 
are starting to get bugged by me :)

Sorry I can't help you, I have not figured it out either.

YS
Anders Berg

At 18:18 13.05.2004 -0400, William R. Lorenz wrote:>Samba Team,
>
>I've been trying to get my Samba server to authenticate users against a
>Windows 2000 Active Directory domain controller, and it just doesn't
work.
>I've encountered a TREMENDOUS amount of postings from people who have
run
>into the same issue, and there's never any responses with a resolution.
>I must have viewed more than 500 postings over the course of the day.
>
>I have a seemingly valid Samba configuration file.  All of the `wbinfo
>-u`, `wbinfo -g`, `getent passwd`, and `getent group` commands work just
>fine.  Howver, `wbinfo -t` and `wbinfo -a` don't work, and I can't
>authenticate users against the domain controller.  As an example:
>
>   [root@nasone samba]# net ads join -U Administrator
>   Administrator's password:
>   [2004/05/13 17:49:30, 0] libads/ldap.c:ads_add_machine_acct(1006)
>     Host account for nasone already exists - modifying old account
>   Using short domain name -- ECHUDSON
>   Joined 'NASONE' to realm 'HUDSON-OFFICE.ECEDIINC.COM'
>   [root@nasone samba]# net rpc join -U Administrator
>   Password:
>   Joined domain ECHUDSON.
>   [root@nasone samba]# wbinfo -t
>   checking the trust secret via RPC calls failed
>   error code was NT_STATUS_UNSUCCESSFUL (0xc0000001)
>   Could not check secret
>   [root@nasone samba]#
>
>After trying to do the `wbinfo -t`, I see the following in
'winbindd.log':
>
>   [2004/05/13 17:49:41, 2]
>     libsmb/cliconnect.c:cli_session_setup_kerberos(535)
>     Doing kerberos session setup
>   [2004/05/13 17:49:41, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
>     rpc_auth_pipe: wrong schannel auth len 24
>   [2004/05/13 17:49:41, 0]
>     rpc_client/cli_netlogon.c:cli_nt_setup_creds(249)
>     cli_nt_setup_creds: request challenge failed
>   [2004/05/13 17:49:41, 2]
>     nsswitch/winbindd_misc.c:winbindd_check_machine_acct(98)
>     Checking the trust account password returned NT_STATUS_UNSUCCESSFUL
>
>I am using Samba 3.0.4, as distributed in Fedora Core 1 RPM format on the
>main Samba website @ http://www.samba.org/.  Here's the details:
>
>   [root@nasone samba]# rpm -qa | grep ^samba
>   samba-common-3.0.4-2
>   samba-client-3.0.4-2
>   samba-3.0.4-2
>   [root@nasone samba]# rpm -qa | grep ^krb5
>   krb5-libs-1.3.1-6
>   krb5-workstation-1.3.1-6
>   [root@nasone samba]#
>
>The output of `wbinfo -a` produces the following:
>
>   [root@nasone samba]# wbinfo -a Administrator
>   plaintext password authentication failed
>   error code was NT_STATUS_NO_SUCH_USER (0xc0000064)
>   error messsage was: No such user
>   Could not authenticate user Administrator with plaintext password
>   challenge/response password authentication failed
>   error code was NT_STATUS_NO_LOGON_SERVERS (0xc000005e)
>   error messsage was: No logon servers
>   Could not authenticate user Administrator with challenge/response
>   [root@nasone samba]#
>
>And this results in the following in 'winbindd.log':
>
>   [2004/05/13 17:53:04, 2]
>   libsmb/cliconnect.c:cli_session_setup_kerberos(535)
>     Doing kerberos session setup
>   [2004/05/13 17:53:04, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
>     rpc_auth_pipe: wrong schannel auth len 24
>   [2004/05/13 17:53:04, 0]
>     rpc_client/cli_netlogon.c:cli_nt_setup_creds(249)
>     cli_nt_setup_creds: request challenge failed
>   [2004/05/13 17:53:04, 2]
>     nsswitch/winbindd_pam.c:winbindd_pam_auth_crap(612)
>     NTLM CRAP authentication for user [ECHUDSON]\[Administrator] returned
>     NT_STATUS_NO_LOGON_SERVERS (PAM: 4)
>
>NTLM CRAP authentication is right -- this just doesn't want to work! ;)
>
>Here's the contents of my '/etc/samba/smb.conf' configuration
file:
>
>   [root@nasone samba]# grep -v ^\; /etc/samba/smb.conf
>   [global]
>     workgroup = ECHUDSON
>     realm = HUDSON-OFFICE.LOCAL
>     server string = NASONE
>     hosts allow = 10.0.0.0/24
>     load printers = no
>
>     security = ads
>     auth methods = winbind
>     password server = ARIEL
>     name resolve order = bcast wins host
>     wins server = 10.0.0.150 10.0.0.151
>
>     log level = 2
>     log file = /var/log/samba/samba-global.log
>     log file = /var/log/samba/%m.log
>     max log size = 0
>
>     winbind separator = +
>     encrypt passwords = yes
>     idmap uid = 10000-20000
>     idmap gid = 10000-20000
>     winbind enum users = yes
>     winbind enum groups = yes
>     winbind cache time = 15
>     template shell = /sbin/nologin
>     template homedir = /dev/null/%D/%U
>
>     socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
>     interfaces = 10.0.0.180/24 10.0.1.180/24
>
>     os level = 33
>     local master = no
>     domain master = no
>     preferred master = no
>     domain logons = no
>
>     wins support = no
>     dns proxy = no
>
>   [volume01]
>     comment = volume01
>     path = /mnt/volumes/lv01
>     public = no
>     writable = no
>     printable = no
>     valid users = @"ECHUDSON+Domain Admins"
>     write list = @"ECHUDSON+Domain Admins"
>     create mask = 0664
>     directory mask = 0775
>     nt acl support = yes
>   [root@nasone samba]#
>
>Here's a one example of other people having the same issue (I searched
>long and hard for any resolutions many of these had found, to no avail!):
>
>   http://lists.samba.org/archive/samba-technical/2003-July/030983.html
>
>I'd grab others, but I've already closed lots of browser windows. ;)
>
>Here's some additional Kerberos information this is probably pertinent:
>
>   [root@nasone root]# kinit administrator@HUDSON-OFFICE.LOCAL
>   Password for administrator@HUDSON-OFFICE.LOCAL:
>   [root@nasone root]# klist
>   Ticket cache: FILE:/tmp/krb5cc_0
>   Default principal: administrator@HUDSON-OFFICE.LOCAL
>
>   Valid starting     Expires            Service principal
>   05/13/04 18:13:23  05/14/04 04:14:36
>   krbtgt/HUDSON-OFFICE.ECEDIINC.COM@HUDSON-OFFICE.LOCAL
>           renew until 05/14/04 18:13:23
>   05/13/04 18:15:33  05/14/04 04:14:36  ariel$@HUDSON-OFFICE.LOCAL
>           renew until 05/14/04 18:13:23
>
>   Kerberos 4 ticket cache: /tmp/tkt0
>   klist: You have no tickets cached
>   [root@nasone root]#
>
>And finally, let's get in a good test of Kerberos with the -k flag:
>
>   [root@nasone root]# smbclient -U Administrator -k //10.0.0.150/GENSRVNT
>   OS=[Windows 5.0] Server=[Windows 2000 LAN Manager]
>   smb: \> ls
>     .                                   D    0  Thu Apr  1 15:37:04 2004
>     ..                                  D    0  Thu Apr  1 15:37:04 2004
>     [ADDITIONAL DIRECTORY LISTING TRIMMED]
>   smb: \> quit
>   [root@nasone root]#
>
>Does anyone have any ideas?!?!
>
>--          _
>__ __ ___ _| | William R. Lorenz <wrl@express.org>
>\ V  V / '_| | http://www.clevelandlug.net/ ; "Every revolution was
>  \./\./|_| |_| first a thought in one man's mind." - Ralph Waldo
Emerson
>
>--
>To unsubscribe from this list go to the following URL and read the
>instructions:  http://lists.samba.org/mailman/listinfo/samba



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Gerald (Jerry) Carter

2004-May-14 12:50 UTC

head link

Bug 1315 -- wrong schannel auth len 24 [was Re: [Samba] Winbind ADS Issues w/ TONS of Pre-Research]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

William R. Lorenz wrote
:
|   [2004/05/13 17:49:41, 2]
|     libsmb/cliconnect.c:cli_session_setup_kerberos(535)
|     Doing kerberos session setup
|   [2004/05/13 17:49:41, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
|     rpc_auth_pipe: wrong schannel auth len 24

Already fixed (everyone please listen this time!)  This was a
bug introduced in 3.0.3 and 3.0.4.  It is only seen from what
I can tell by using a DC that does not support 128 bit encryption
for signing and sealing of rpc packets.  This includes Windows
2000 with no patches and non-us service packs (i'm guessing
on the second one).

The fix for 3.0.4 is attached to

	https://bugzilla.samba.org/show_bug.cgi?id=1315

Anders, I posted this previsouly in response to one of
the threads you referred to.

http://lists.samba.org/archive/samba/2004-May/085842.html




cheers, jerry
- ----------------------------------------------------------------------
Hewlett-Packard            ------------------------- http://www.hp.com
SAMBA Team                 ---------------------- http://www.samba.org
GnuPG Key                  ---- http://www.plainjoe.org/gpg_public.asc
"...a hundred billion castaways looking for a home." ----------- Sting
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Buchan Milne

2004-May-14 14:26 UTC

head link

[Samba] Winbind ADS Issues w/ TONS of Pre-Research

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


| Samba Team,
|
| I've been trying to get my Samba server to authenticate users against a
| Windows 2000 Active Directory domain controller, and it just doesn't
work.
| I've encountered a TREMENDOUS amount of postings from people who have run
| into the same issue, and there's never any responses with a resolution.
| I must have viewed more than 500 postings over the course of the day.
|
| I have a seemingly valid Samba configuration file.  All of the `wbinfo
| -u`, `wbinfo -g`, `getent passwd`, and `getent group` commands work just
| fine.  Howver, `wbinfo -t` and `wbinfo -a` don't work, and I can't
| authenticate users against the domain controller.  As an example:
|
|   [root@nasone samba]# net ads join -U Administrator
|   Administrator's password:
|   [2004/05/13 17:49:30, 0] libads/ldap.c:ads_add_machine_acct(1006)
|     Host account for nasone already exists - modifying old account
|   Using short domain name -- ECHUDSON
|   Joined 'NASONE' to realm 'HUDSON-OFFICE.ECEDIINC.COM'
|   [root@nasone samba]# net rpc join -U Administrator
|   Password:
|   Joined domain ECHUDSON.

^^^ Surely this is redundant?

|   [root@nasone samba]# wbinfo -t
|   checking the trust secret via RPC calls failed
|   error code was NT_STATUS_UNSUCCESSFUL (0xc0000001)
|   Could not check secret
|   [root@nasone samba]#
|
| After trying to do the `wbinfo -t`, I see the following in
'winbindd.log':
|
|   [2004/05/13 17:49:41, 2]
|     libsmb/cliconnect.c:cli_session_setup_kerberos(535)
|     Doing kerberos session setup
|   [2004/05/13 17:49:41, 0] rpc_client/cli_pipe.c:rpc_auth_pipe(336)
|     rpc_auth_pipe: wrong schannel auth len 24

This looks like https://bugzilla.samba.org/show_bug.cgi?id=1315, where
you will find a patch that fixed it for everyone who has tried
(including me).

The patch is also in the 3.0.4-2mdk packages in Mandrake cooker (and the
RPMS for Mandrake 9.1-10 that hopefully should be available soon on the
samba mirrors).

Regards,
Buchan

- --
Buchan Milne                      Senior Support Technician
Obsidian Systems                  http://www.obsidian.co.za
B.Eng                                RHCE (803004789010797)
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