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Erdei Miklos

2018-Mar-27 10:37 UTC

[Samba] Unable to access AD with ADExplorer

Hi,

I have a test AD running Samba on Ubuntu that I sometimes poke with
Sysinternal's ADExplorer.
A few days ago I tried connecting to it, but got a short reply of "The
directory service is not available."
As it was working earlier, I tried finding the problem.
After installing a few older releases, I found that it was working on Ubuntu
17.04, Samba 4.5.8 and stopped working on Ubuntu 17.10, Samba 4.6.7. Ubuntu
18.04 Beta's Samba 4.7 also fails to work.
I know 4.5 is EoL, but that is the last version that I could log successfully
on.
The test ADs have exactly the same configuration, that was created during the AD
provisioning.

Here are the log excerpts running on -d3:

Working logon:
==================================Version
4.5.8-Ubuntu=================================[2018/03/26 16:32:38.889960,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:38.896147,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:38.897060,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:38.897302,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:38.901252,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:38.901492,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:38.901669,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:38.901878,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
[2018/03/26 16:32:38.910422,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED'
[2018/03/26 16:32:38.910667,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_CONNECTION_DISCONNECTED]
[2018/03/26 16:32:38.911755,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:38.915128,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:38.915752,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:38.915983,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:38.919313,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:38.919555,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:38.919752,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:38.919923,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
[2018/03/26 16:32:39.571560,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED'
[2018/03/26 16:32:39.572294,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_CONNECTION_DISCONNECTED]
[2018/03/26 16:32:39.575711,  3] 
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:39.579515,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:39.580258,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:39.580474,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:39.584407,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.584611,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:39.584793,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.584959,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
[2018/03/26 16:32:39.823078,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED'
[2018/03/26 16:32:39.823431,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_CONNECTION_DISCONNECTED]
[2018/03/26 16:32:39.826504,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:39.830011,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:39.830652,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:39.830890,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:39.834247,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.834452,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:39.834601,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.834756,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
[2018/03/26 16:32:39.864216,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED'
[2018/03/26 16:32:39 .864480,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_CONNECTION_DISCONNECTED]
[2018/03/26 16:32:39.880432,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:39.883778,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:39.884513,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:39.884731,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:39.888141,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.888350,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:39.888502,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.888656,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
[2018/03/26 16:32:39.911770,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED'
[2018/03/26 16:32:39.912037,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_CONNECTION_DISCONNECTED]
[2018/03/26 16:32:39.933657,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:39.938632,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:39.939515,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:39.939988,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:39.944810,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.945222,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:39.945541,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:39.945808,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088235
==================================Version
4.5.8-Ubuntu=================================
Non-Working logon:
==================================Version
4.6.7-Ubuntu=================================[2018/03/26 16:32:45.920989,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:45.926921,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:45.927514,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:45.927620,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:45.932479,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:45.932537,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:45.932576,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:45.932600,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:45.940988,  0] 
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
[2018/03/26 16:32:45.941244,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_IO_DEVICE_ERROR'
[2018/03/26 16:32:45.941284,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_IO_DEVICE_ERROR]
[2018/03/26 16:32:45.942532,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
  ldb_wrap open of secrets.ldb
[2018/03/26 16:32:45.946341,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088297
[2018/03/26 16:32:45.946846,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
  Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
[2018/03/26 16:32:45.946903,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
  auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
  auth_check_password_send: mapped user is: [SAMDOM]\[administrator]@[TEST]
[2018/03/26 16:32:45.950762,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:45.950809,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:45.950847,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/03/26 16:32:45.950873,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
  Got NTLMSSP neg_flags=0xe2088215
[2018/03/26 16:32:45.958662,  0]
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
  NTLMSSP NTLM2 packet check failed due to invalid signature!
[2018/03/26 16:32:45.958818,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
  Terminating connection - 'ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_IO_DEVICE_ERROR'
[2018/03/26 16:32:45.958850,  3]
../source4/smbd/process_single.c:114(single_terminate)
  single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv() -
NT_STATUS_IO_DEVICE_ERROR]
==================================Version
4.6.7-Ubuntu=================================
I tried "ldap server require strong auth = no", Googling "NTLMSSP
NTLM2 packet check failed due to invalid signature!", checking the mailing
list archives, and a bit more, but none gave any result.

Can anyone help me how to proceed?

Thanks for your help!

Best regards,
Miklos Erdei



_________________________________________

Citromail.hu levelezőrendszerből küldve

Lépj be vagy regisztrálj

lingpanda101

2018-Mar-27 12:08 UTC

head link

[Samba] Unable to access AD with ADExplorer

On 3/27/2018 6:37 AM, Erdei Miklos via samba wrote:> Hi,
>
> I have a test AD running Samba on Ubuntu that I sometimes poke with
Sysinternal's ADExplorer.
> A few days ago I tried connecting to it, but got a short reply of "The
directory service is not available."
> As it was working earlier, I tried finding the problem.
> After installing a few older releases, I found that it was working on
Ubuntu 17.04, Samba 4.5.8 and stopped working on Ubuntu 17.10, Samba 4.6.7.
Ubuntu 18.04 Beta's Samba 4.7 also fails to work.
> I know 4.5 is EoL, but that is the last version that I could log
successfully on.
> The test ADs have exactly the same configuration, that was created during
the AD provisioning.
>
> Here are the log excerpts running on -d3:
>
> Working logon:
> ==================================Version
4.5.8-Ubuntu=================================> [2018/03/26 16:32:38.889960, 
3] ../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:38.896147,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:38.897060,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:38.897302,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:38.901252,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:38.901492,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:38.901669,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:38.901878,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> [2018/03/26 16:32:38.910422,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'
> [2018/03/26 16:32:38.910667,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED]
> [2018/03/26 16:32:38.911755,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:38.915128,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:38.915752,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:38.915983,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:38.919313,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:38.919555,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:38.919752,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:38.919923,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> [2018/03/26 16:32:39.571560,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'
> [2018/03/26 16:32:39.572294,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED]
> [2018/03/26 16:32:39.575711,  3] 
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:39.579515,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:39.580258,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:39.580474,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:39.584407,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.584611,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:39.584793,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.584959,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> [2018/03/26 16:32:39.823078,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'
> [2018/03/26 16:32:39.823431,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED]
> [2018/03/26 16:32:39.826504,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:39.830011,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:39.830652,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:39.830890,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:39.834247,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.834452,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:39.834601,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.834756,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> [2018/03/26 16:32:39.864216,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'
> [2018/03/26 16:32:39 .864480,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED]
> [2018/03/26 16:32:39.880432,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:39.883778,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:39.884513,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:39.884731,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:39.888141,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.888350,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:39.888502,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.888656,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> [2018/03/26 16:32:39.911770,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'
> [2018/03/26 16:32:39.912037,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_CONNECTION_DISCONNECTED]
> [2018/03/26 16:32:39.933657,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:39.938632,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:39.939515,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:39.939988,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:39.944810,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.945222,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:39.945541,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:39.945808,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088235
> ==================================Version
4.5.8-Ubuntu=================================>
> Non-Working logon:
> ==================================Version
4.6.7-Ubuntu=================================> [2018/03/26 16:32:45.920989, 
3] ../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:45.926921,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:45.927514,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:45.927620,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:45.932479,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:45.932537,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:45.932576,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:45.932600,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:45.940988,  0] 
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
>    NTLMSSP NTLM2 packet check failed due to invalid signature!
> [2018/03/26 16:32:45.941244,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR'
> [2018/03/26 16:32:45.941284,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_IO_DEVICE_ERROR]
> [2018/03/26 16:32:45.942532,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)
>    ldb_wrap open of secrets.ldb
> [2018/03/26 16:32:45.946341,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088297
> [2018/03/26 16:32:45.946846,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>    Got user=[administrator] domain=[] workstation=[TEST] len1=24 len2=266
> [2018/03/26 16:32:45.946903,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)
>    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]
>    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]
> [2018/03/26 16:32:45.950762,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:45.950809,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:45.950847,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>    NTLMSSP Sign/Seal - Initialising with flags:
> [2018/03/26 16:32:45.950873,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>    Got NTLMSSP neg_flags=0xe2088215
> [2018/03/26 16:32:45.958662,  0]
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)
>    NTLMSSP NTLM2 packet check failed due to invalid signature!
> [2018/03/26 16:32:45.958818,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)
>    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR'
> [2018/03/26 16:32:45.958850,  3]
../source4/smbd/process_single.c:114(single_terminate)
>    single_terminate: reason[ldapsrv_call_loop: tstream_read_pdu_blob_recv()
- NT_STATUS_IO_DEVICE_ERROR]
> ==================================Version
4.6.7-Ubuntu=================================>
> I tried "ldap server require strong auth = no", Googling
"NTLMSSP NTLM2 packet check failed due to invalid signature!",
checking the mailing list archives, and a bit more, but none gave any result.
>
> Can anyone help me how to proceed?
>
> Thanks for your help!
>
> Best regards,
> Miklos Erdei
>
>
>
> _________________________________________
>
> Citromail.hu levelezőrendszerből küldve
>
> Lépj be vagy regisztrálj
I find if you don't use DOMAIN\username for the user you get this error 
message.

-- 
--
James

Erdei Miklos

2018-Mar-27 12:20 UTC

head link

[Samba] Unable to access AD with ADExplorer

Hi,

On 3/27/2018 6:37 AM, Erdei Miklos via samba wrote:

&gt; Hi,

&gt;

&gt; I have a test AD running Samba on Ubuntu that I sometimes poke with
Sysinternal's ADExplorer.

&gt; A few days ago I tried connecting to it, but got a short reply of
"The directory service is not available."

&gt; As it was working earlier, I tried finding the problem.

&gt; After installing a few older releases, I found that it was working on
Ubuntu 17.04, Samba 4.5.8 and stopped working on Ubuntu 17.10, Samba 4.6.7.
Ubuntu 18.04 Beta's Samba 4.7 also fails to work.

&gt; I know 4 .5 is EoL, but that is the last version that I could log
successfully on.

&gt; The test ADs have exactly the same configuration, that was created
during the AD provisioning.

&gt;

&gt; Here are the log excerpts running on -d3:

&gt;

&gt; Working logon:

&gt; ==================================Version
4.5.8-Ubuntu=================================
&gt; [2018/03/26 16:32:38.889960,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:38.896147,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:38.897060,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:38.897302,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:38.901252,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:38.901492,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:38.901669,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:38.901878,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; [2018/03/26 16:32:38.910422,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'

&gt; [2018/03/26 16:32:38.910667,  3]
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED]

&gt; [2018/03/26 16:32:38.911755,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:38.915128,  3] ../auth/ntlmssp/ntlmssp_util
.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:38.915752,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:38.915983,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:38.919313,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:38 .919555,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:38.919752,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:38.919923,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; [2018/03/26 16:32:39.571560,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'

&gt; [2018/03/26 16:32:39.572294,  3]
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED]

&gt; [2018/03/26 16:32:39.575711,  3] 
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:39.579515,  3] 
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:39.580258,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:39.580474,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:39.584407,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.584611,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:39.584793,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.584959,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; [2018/03/26 16:32:39.823078,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'

&gt; [2018/03/26 16:32:39.823431,  3]
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED]

&gt; [2018/03/26 16:32:39.826504,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:39.830011,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:39.830652,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:39.830890,  3] .
./source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:39.834247,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.834452,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:39.834601,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.834756,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; [2018/03/26 16:32:39.864216,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'

&gt; [2018/03/26 16:32:39 .864480,  3] 
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED]

&gt; [2018/03/26 16:32:39.880432,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:39.883778,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:39.884513,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:39.884731,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:39.888141,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.888350,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:39.888502,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.888656,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; [2018/03/26 16:32:39.911770,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED'

&gt; [2018/03/26 16:32:39.912037,  3]
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_CONNECTION_DISCONNECTED]

&gt; [2018/03/26 16:32:39.933657,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:39.938632,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:39.939515,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:39.939988,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:39.944810,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.945222,  3] ../auth/ntlmssp/ntlmssp_util
.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:39.945541,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:39.945808,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088235

&gt; ==================================Version
4.5.8-Ubuntu=================================
&gt;

&gt; Non-Working logon:

&gt; ==================================Version
4.6.7-Ubuntu=================================
&gt; [2018/03/26 16:32:45.920989,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:45.926921,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:45.927514,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:45.927620,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:45.932479,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:45.932537,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:45.932576,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:45.932600,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:45.940988,  0] 
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)

&gt;    NTLMSSP NTLM2 packet check failed due to invalid signature!

&gt; [2018/03/26 16:32:45.941244,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR'

&gt; [2018/03/26 16:32:45.941284,  3]
../source4/smbd/process_single.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR]

&gt; [2018/03/26 16:32:45.942532,  3]
../lib/ldb-samba/ldb_wrap.c:325(ldb_wrap_connect)

&gt;    ldb_wrap open of secrets.ldb

&gt; [2018/03/26 16:32:45.946341,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088297

&gt; [2018/03/26 16:32:45.946846,  3]
../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)

&gt;    Got user=[administrator] domain=[] workstation=[TEST] len1=24
len2=266

&gt; [2018/03/26 16:32:45.946903,  3]
../source4/auth/ntlm/auth.c:271(auth_check_password_send)

&gt;    auth_check_password_send: Checking password for unmapped user
[]\[administrator]@[TEST]

&gt;    auth_check_password_send: mapped user is:
[SAMDOM]\[administrator]@[TEST]

&gt; [2018/03/26 16:32:45.950762,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:45.950809,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:45.950847,  3]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)

&gt;    NTLMSSP Sign/Seal - Initialising with flags:

&gt; [2018/03/26 16:32:45.950873,  3]
../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)

&gt;    Got NTLMSSP neg_flags=0xe2088215

&gt; [2018/03/26 16:32:45.958662,  0]
../auth/ntlmssp/ntlmssp_sign.c:236(ntlmssp_check_packet)

&gt;    NTLMSSP NTLM2 packet check failed due to invalid signature!

&gt; [2018/03/26 16:32:45.958818,  3]
../source4/smbd/service_stream.c:66(stream_terminate_connection)

&gt;    Terminating connection - 'ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR'

&gt; [2018/03/26 16:32:45.958850,  3] ../source4/smbd/process_single
.c:114(single_terminate)

&gt;    single_terminate: reason[ldapsrv_call_loop:
tstream_read_pdu_blob_recv() - NT_STATUS_IO_DEVICE_ERROR]

&gt; ==================================Version
4.6.7-Ubuntu=================================
&gt;

&gt; I tried "ldap server require strong auth = no", Googling
"NTLMSSP NTLM2 packet check failed due to invalid signature!",
checking the mailing list archives, and a bit more, but none gave any result.

&gt;

&gt; Can anyone help me how to proceed?

&gt;

&gt; Thanks for your help!

&gt;

&gt; Best regards,

&gt; Miklos Erdei

&gt;




I find if you don't use DOMAIN\username for the user you get this error 

message.
I tried logging on with and without domain prefix (and suffix too). Same result:
all formats work on 4.5 and none on 4.6.

M




-- 

--

James





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