[Samba] get access denied on samba AD share

Christian Naumer cn at brain-biotech.de
Thu Sep 21 12:36:49 UTC 2017


From:

https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7#head-281c090cc4fbc6bb5c7d4cd82a266fce807e
ee7c

"samba share with sssd authentication is broken. This is being worked on upstream. A
workaround is to downgrade the samba packages to an earlier version."




Am Donnerstag, den 21.09.2017, 09:22 +0000 schrieb Qiao Xu via samba:
> Hello Sambaers, i can not access my samba shares after upgrade my centos to 7.4,samba
> version was upgraded to 4.6.2
> 
> i joined centos to windows domain by realm command,domain user(format as username at doaminname
> ) could login to centos
> 
> could get kerberos ticket by kinit with domain user
> 
> 
> execute net view command at domain windows server get access denied
> 
> 
> C:\>net view \\ark-centos-smb4.qa.arkivio.com
> System error 5 has occurred.
> 
> Access is denied.
> 
> 
> C:\>net view \\192.168.32.26
> System error 5 has occurred.
> 
> Access is denied.
> 
> 
> collected following log while get access denied error with samba server ip, i complains can
> not find the user,and run getent passwd domainuser at domainname could finish successfully
> 
> 
> [2017/09/21 00:36:03.319546,  3] ../source3/smbd/oplock.c:1322(init_oplocks)
>   init_oplocks: initializing messages.
> [2017/09/21 00:36:03.319707,  3] ../source3/smbd/process.c:1957(process_smb)
>   Transaction 0 of length 159 (0 toread)
> [2017/09/21 00:36:03.319744,  3] ../source3/smbd/process.c:1538(switch_message)
>   switch message SMBnegprot (pid 23703) conn 0x0
> [2017/09/21 00:36:03.319767,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.320414,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [PC NETWORK PROGRAM 1.0]
> [2017/09/21 00:36:03.320441,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [LANMAN1.0]
> [2017/09/21 00:36:03.320454,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [Windows for Workgroups 3.1a]
> [2017/09/21 00:36:03.320466,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [LM1.2X002]
> [2017/09/21 00:36:03.320482,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [LANMAN2.1]
> [2017/09/21 00:36:03.320497,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [NT LM 0.12]
> [2017/09/21 00:36:03.320509,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [SMB 2.002]
> [2017/09/21 00:36:03.320538,  3] ../source3/smbd/negprot.c:603(reply_negprot)
>   Requested protocol [SMB 2.???]
> [2017/09/21 00:36:03.320638,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.320722,  3]
> ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
>   Selected protocol SMB2_FF
> [2017/09/21 00:36:03.321314,  2]
> ../source3/librpc/crypto/gse_krb5.c:229(fill_mem_keytab_from_secrets)
>   ../source3/librpc/crypto/gse_krb5.c:229: failed to fetch machine password
> [2017/09/21 00:36:03.321344,  3]
> ../source3/librpc/crypto/gse_krb5.c:587(gse_krb5_get_server_keytab)
>   ../source3/librpc/crypto/gse_krb5.c:587: Warning! Unable to set mem keytab from secrets!
> [2017/09/21 00:36:03.322377,  3] ../source3/smbd/negprot.c:730(reply_negprot)
>   Selected protocol SMB 2.???
> [2017/09/21 00:36:03.323207,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.323262,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.323300,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.323326,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.325145,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.325187,  3]
> ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
>   Selected protocol SMB2_10
> [2017/09/21 00:36:03.325448,  2]
> ../source3/librpc/crypto/gse_krb5.c:229(fill_mem_keytab_from_secrets)
>   ../source3/librpc/crypto/gse_krb5.c:229: failed to fetch machine password
> [2017/09/21 00:36:03.325466,  3]
> ../source3/librpc/crypto/gse_krb5.c:587(gse_krb5_get_server_keytab)
>   ../source3/librpc/crypto/gse_krb5.c:587: Warning! Unable to set mem keytab from secrets!
> [2017/09/21 00:36:03.327171,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.327477,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.327498,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.327509,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.327562,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.327754,  3] ../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>   Got NTLMSSP neg_flags=0xe2088297
>     NTLMSSP_NEGOTIATE_UNICODE
>     NTLMSSP_NEGOTIATE_OEM
>     NTLMSSP_REQUEST_TARGET
>     NTLMSSP_NEGOTIATE_SIGN
>     NTLMSSP_NEGOTIATE_LM_KEY
>     NTLMSSP_NEGOTIATE_NTLM
>     NTLMSSP_NEGOTIATE_ALWAYS_SIGN
>     NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY
>     NTLMSSP_NEGOTIATE_VERSION
>     NTLMSSP_NEGOTIATE_128
>     NTLMSSP_NEGOTIATE_KEY_EXCH
>     NTLMSSP_NEGOTIATE_56
> [2017/09/21 00:36:03.327897,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.327919,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.327930,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.327951,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.328313,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.328360,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.328376,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.328387,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.328403,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.328478,  3]
> ../auth/ntlmssp/ntlmssp_server.c:452(ntlmssp_server_preauth)
>   Got user=[arkadmin] domain=[QA] workstation=[NWT-VM-ARK8118] len1=24 len2=350
> [2017/09/21 00:36:03.328573,  3] ../source3/param/loadparm.c:3823(lp_load_ex)
>   lp_load_ex: refreshing parameters
> [2017/09/21 00:36:03.328664,  3] ../source3/param/loadparm.c:542(init_globals)
>   Initialising global parameters
> [2017/09/21 00:36:03.328773,  3] ../source3/param/loadparm.c:2752(lp_do_section)
>   Processing section "[global]"
>   doing parameter netbios name = ARK-CENTOS-SMB4
>   doing parameter security = ADS
>   doing parameter workgroup = QA.ARKIVIO.COM
>   doing parameter kerberos method = secrets and keytab
>   doing parameter realm = QA.ARKIVIO.COM
>   doing parameter log file = /var/log/samba/%m.log
>   doing parameter log level = 4
>   doing parameter local master = no
>   doing parameter domain master = no
>   doing parameter server string = Samba Server Version %v
>   doing parameter max log size = 5000
>   doing parameter load printers = No
>   doing parameter wins support = no
>   doing parameter wins proxy = no
>   doing parameter dns proxy = yes
>   doing parameter name resolve order = host lmhosts wins bcast
> [2017/09/21 00:36:03.328953,  2] ../source3/param/loadparm.c:2769(lp_do_section)
>   Processing section "[arkc1]"
>   doing parameter comment = centos samba4 share1
>   doing parameter path = /rocket/cifs/cifs1
>   doing parameter writable = yes
>   doing parameter guest ok = yes
>   doing parameter valid users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadm
> in at qa.arkivio.com,@"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com","QA.ARKIV
> IO.COM\AutostorAdmins",arkadmin at QA.ARKIVIO.COM
>   doing parameter admin users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadm
> in at qa.arkivio.com,@"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com",arkadmin@
> QA.ARKIVIO.COM,QA\arkadmin,QA.ARKIVIO.COM\arkadmin
> [2017/09/21 00:36:03.329055,  2] ../source3/param/loadparm.c:2769(lp_do_section)
>   Processing section "[arkc2]"
>   doing parameter comment = centos samba4 share2
>   doing parameter path = /rocket/cifs/cifs2
>   doing parameter writable = yes
>   doing parameter admin users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadm
> in at qa.arkivio.com,@"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com",arkadmin@
> QA.ARKIVIO.COM,QA\arkadmin,QA.ARKIVIO.COM\arkadmin
>   doing parameter valid users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadm
> in at qa.arkivio.com,@"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com","QA.ARKIV
> IO.COM\AutostorAdmins",arkadmin at QA.ARKIVIO.COM,QA\arkadmin,QA.ARKIVIO.COM\arkadmin
> [2017/09/21 00:36:03.329149,  4] ../source3/param/loadparm.c:3864(lp_load_ex)
>   pm_process() returned Yes
> [2017/09/21 00:36:03.329186,  3] ../source3/param/loadparm.c:1592(lp_add_ipc)
>   adding IPC service
> [2017/09/21 00:36:03.329981,  4] ../source3/libsmb/namequery_dc.c:77(ads_dc_name)
>   ads_dc_name: domain=QA.ARKIVIO.COM
> [2017/09/21 00:36:03.331294,  3] ../source3/libsmb/namequery.c:3160(get_dc_list)
>   get_dc_list: preferred server list: ", *"
> [2017/09/21 00:36:03.332043,  4] ../lib/addns/dnsquery.c:435(ads_dns_lookup_srv)
>   ads_dns_lookup_srv: 2 records returned in the answer section.
> [2017/09/21 00:36:03.333572,  4] ../source3/libsmb/namequery.c:3305(get_dc_list)
>   get_dc_list: returning 3 ip addresses in an ordered list
> [2017/09/21 00:36:03.333594,  4] ../source3/libsmb/namequery.c:3306(get_dc_list)
>   get_dc_list: 192.168.32.231:389 192.168.32.230:389 2001:21:21:32:743e:17d2:61a4:fdb8:389
> [2017/09/21 00:36:03.334552,  3] ../source3/libads/ldap.c:618(ads_connect)
>   Successfully contacted LDAP server 192.168.32.231
> [2017/09/21 00:36:03.334622,  3] ../source3/libsmb/namequery.c:3160(get_dc_list)
>   get_dc_list: preferred server list: ", *"
> [2017/09/21 00:36:03.334961,  4] ../lib/addns/dnsquery.c:435(ads_dns_lookup_srv)
>   ads_dns_lookup_srv: 2 records returned in the answer section.
> [2017/09/21 00:36:03.335007,  4] ../source3/libsmb/namequery.c:3305(get_dc_list)
>   get_dc_list: returning 3 ip addresses in an ordered list
> [2017/09/21 00:36:03.335023,  4] ../source3/libsmb/namequery.c:3306(get_dc_list)
>   get_dc_list: 192.168.32.230:88 192.168.32.231:88 2001:21:21:32:743e:17d2:61a4:fdb8:88
> [2017/09/21 00:36:03.335042,  3] ../source3/libsmb/namequery.c:3160(get_dc_list)
>   get_dc_list: preferred server list: ", *"
> [2017/09/21 00:36:03.335419,  4] ../lib/addns/dnsquery.c:435(ads_dns_lookup_srv)
>   ads_dns_lookup_srv: 2 records returned in the answer section.
> [2017/09/21 00:36:03.335463,  4] ../source3/libsmb/namequery.c:3305(get_dc_list)
>   get_dc_list: returning 3 ip addresses in an ordered list
> [2017/09/21 00:36:03.335478,  4] ../source3/libsmb/namequery.c:3306(get_dc_list)
>   get_dc_list: 192.168.32.230:88 192.168.32.231:88 2001:21:21:32:743e:17d2:61a4:fdb8:88
> [2017/09/21 00:36:03.336391,  4] ../source3/libsmb/namequery_dc.c:151(ads_dc_name)
>   ads_dc_name: using server='ARK-QA-DC2.QA.ARKIVIO.COM' IP=192.168.32.231
> [2017/09/21 00:36:03.336496,  3] ../source3/lib/util_sock.c:515(open_socket_out_send)
>   Connecting to 192.168.32.231 at port 445
> [2017/09/21 00:36:03.337733,  3]
> ../source3/libsmb/cliconnect.c:271(cli_session_creds_prepare_krb5)
>   got OID=1.3.6.1.4.1.311.2.2.30
>   got OID=1.2.840.48018.1.2.2
> [2017/09/21 00:36:03.338945,  3]
> ../auth/ntlmssp/ntlmssp_client.c:270(ntlmssp_client_challenge)
>   Got challenge flags:
> [2017/09/21 00:36:03.338973,  3] ../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>   Got NTLMSSP neg_flags=0x62898215
>     NTLMSSP_NEGOTIATE_UNICODE
>     NTLMSSP_REQUEST_TARGET
>     NTLMSSP_NEGOTIATE_SIGN
>     NTLMSSP_NEGOTIATE_NTLM
>     NTLMSSP_NEGOTIATE_ALWAYS_SIGN
>     NTLMSSP_TARGET_TYPE_DOMAIN
>     NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY
>     NTLMSSP_NEGOTIATE_TARGET_INFO
>     NTLMSSP_NEGOTIATE_VERSION
>     NTLMSSP_NEGOTIATE_128
>     NTLMSSP_NEGOTIATE_KEY_EXCH
> [2017/09/21 00:36:03.339060,  3]
> ../auth/ntlmssp/ntlmssp_client.c:726(ntlmssp_client_challenge)
>   NTLMSSP: Set final flags:
> [2017/09/21 00:36:03.339076,  3] ../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>   Got NTLMSSP neg_flags=0x62008a15
>     NTLMSSP_NEGOTIATE_UNICODE
>     NTLMSSP_REQUEST_TARGET
>     NTLMSSP_NEGOTIATE_SIGN
>     NTLMSSP_NEGOTIATE_NTLM
>     NTLMSSP_ANONYMOUS
>     NTLMSSP_NEGOTIATE_ALWAYS_SIGN
>     NTLMSSP_NEGOTIATE_VERSION
>     NTLMSSP_NEGOTIATE_128
>     NTLMSSP_NEGOTIATE_KEY_EXCH
> [2017/09/21 00:36:03.339112,  3] ../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>   NTLMSSP Sign/Seal - Initialising with flags:
> [2017/09/21 00:36:03.339123,  3] ../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>   Got NTLMSSP neg_flags=0x62008a15
>     NTLMSSP_NEGOTIATE_UNICODE
>     NTLMSSP_REQUEST_TARGET
>     NTLMSSP_NEGOTIATE_SIGN
>     NTLMSSP_NEGOTIATE_NTLM
>     NTLMSSP_ANONYMOUS
>     NTLMSSP_NEGOTIATE_ALWAYS_SIGN
>     NTLMSSP_NEGOTIATE_VERSION
>     NTLMSSP_NEGOTIATE_128
>     NTLMSSP_NEGOTIATE_KEY_EXCH
> [2017/09/21 00:36:03.339972,  3] ../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
>   NTLMSSP Sign/Seal - Initialising with flags:
> [2017/09/21 00:36:03.340000,  3] ../auth/ntlmssp/ntlmssp_util.c:69(debug_ntlmssp_flags)
>   Got NTLMSSP neg_flags=0x62008a15
>     NTLMSSP_NEGOTIATE_UNICODE
>     NTLMSSP_REQUEST_TARGET
>     NTLMSSP_NEGOTIATE_SIGN
>     NTLMSSP_NEGOTIATE_NTLM
>     NTLMSSP_ANONYMOUS
>     NTLMSSP_NEGOTIATE_ALWAYS_SIGN
>     NTLMSSP_NEGOTIATE_VERSION
>     NTLMSSP_NEGOTIATE_128
>     NTLMSSP_NEGOTIATE_KEY_EXCH
> [2017/09/21 00:36:03.344582,  3] ../source3/auth/auth.c:178(auth_check_ntlm_password)
>   check_ntlm_password:  Checking password for unmapped user [QA]\[arkadmin]@[NWT-VM-ARK8118] 
> with the new password interface
> [2017/09/21 00:36:03.344615,  3] ../source3/auth/auth.c:181(auth_check_ntlm_password)
>   check_ntlm_password:  mapped user is: [ARK-CENTOS-SMB4]\[arkadmin]@[NWT-VM-ARK8118]
> [2017/09/21 00:36:03.344650,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.344698,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.344714,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.344768,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.344785,  3] ../source3/auth/check_samsec.c:399(check_sam_security)
>   check_sam_security: Couldn't find user 'arkadmin' in passdb.
> [2017/09/21 00:36:03.344808,  3] ../source3/auth/auth_winbind.c:60(check_winbind_security)
>   check_winbind_security: Not using winbind, requested domain [ARK-CENTOS-SMB4] was for this
> SAM.
> [2017/09/21 00:36:03.344835,  2] ../source3/auth/auth.c:315(auth_check_ntlm_password)
>   check_ntlm_password:  Authentication for user [arkadmin] -> [arkadmin] FAILED with error
> NT_STATUS_NO_SUCH_USER
> [2017/09/21 00:36:03.344858,  2]
> ../auth/gensec/spnego.c:768(gensec_spnego_server_negTokenTarg)
>   SPNEGO login failed: NT_STATUS_NO_SUCH_USER
> [2017/09/21 00:36:03.344879,  4] ../source3/smbd/sec_ctx.c:217(push_sec_ctx)
>   push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.344891,  4] ../source3/smbd/uid.c:491(push_conn_ctx)
>   push_conn_ctx(0) : conn_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.344901,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
> [2017/09/21 00:36:03.344919,  4] ../source3/smbd/sec_ctx.c:439(pop_sec_ctx)
>   pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.344949,  3]
> ../source3/smbd/smb2_server.c:3097(smbd_smb2_request_error_ex)
>   smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
> status[NT_STATUS_LOGON_FAILURE] || at ../source3/smbd/smb2_sesssetup.c:134
> [2017/09/21 00:36:03.345308,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.345337,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.345351,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.345365,  4] ../source3/smbd/sec_ctx.c:321(set_sec_ctx_internal)
>   setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2017/09/21 00:36:03.345535,  3] ../source3/smbd/server_exit.c:246(exit_server_common)
>   Server exit (NT_STATUS_CONNECTION_RESET)
> 
> 
> here is my smb.conf content
> 
> 
> #working since 2017-8-1 with sssd?+ad
> [global]
> netbios name = ARK-CENTOS-SMB4
> security = ADS
> #workgroup = QA
> workgroup = QA.ARKIVIO.COM
> kerberos method = secrets and keytab
> realm = QA.ARKIVIO.COM
> log file = /var/log/samba/%m.log
> log level = 4
> #password server = *
> #passdb backend  = tdbsam
> #template shell  = /bin/bash
> #template homedir = /home/%u
> #winbind separator = +
> local master    = no
> domain master   = no
> #auth methods    = guest sam_ignoredomain winbind
> #guest ok        = no
> server string = Samba Server Version %v
> max log size = 5000
> load printers = No
> #idmap config * : backend = tdb
> #preferred master = no
> wins support = no
> wins proxy = no
> dns proxy = yes
> #name resolve order = wins bcast host lmhosts
> name resolve order = host lmhosts wins bcast
> 
> # Winbind idmap RID settings
> #    winbind use default domain = yes
> #    allow trusted domains = yes
> #    winbind enum users = yes
> #    winbind enum groups = yes
> #    winbind nested groups = yes
> #    idmap config QA : backend = rid
> #    idmap config QA : default = yes
> #    idmap config QA : range = 100-33554431
> #    idmap config * : range = 33554432-67108862
> #    idmap config * : backend = tdb
> #    printing        = bsd
> #    load printers   = no
> #    disable spoolss = yes
> #    printcap name   = /dev/null
> #    log level       = 10
> #    log file        = /var/log/samba/samba.log.%m
> #    max log size    = 5000
> #    debug timestamp = yes
> #    oplocks         = 1
> #    unix extensions = yes
> #    clustering      = 0
> #    smb ports       = 445, 139
> #    mangled names   = yes
> #    default case    = lower
> #    case sensitive  = auto
> #    preserve case   = yes
> #    short preserve case = yes
> #    bind interfaces only = yes
> #    interfaces = lo bond0:2 eth0:1 eth0:2 eth2 eth3
> #    dos filetimes = 1
> #    create mask = 777
> #    admin users = administrator
> 
> [arkc1]
> comment = centos samba4 share1
> path = /rocket/cifs/cifs1
> #public = no
> #read only = no
> writable = yes
> #guest ok = yes
> #inherit permissions = 1
> #inherit acls = 1
> #map acl inherit = 1
> #vfs objects = acl_xattr
> #acl_xattr:ignore system acls = 1
> 
> #valid users = @"autostoradmins at qa.arkivio.com"
> #valid users = administrator,auto-stor,arkadmin,Domain Admins,autostoradmins
> valid users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadmin at qa.arkivio.com,
> @"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com","QA.ARKIVIO.COM\AutostorAdm
> ins",arkadmin at QA.ARKIVIO.COM
> #admin users = administrator,auto-stor,arkadmin,Domain
> Admins,autostoradmins,QA\arkadmin,QA.ARKIVIO.COM\arkadmin
> admin users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadmin at qa.arkivio.com,
> @"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com",arkadmin at QA.ARKIVIO.COM,QA\
> arkadmin,QA.ARKIVIO.COM\arkadmin
> 
> [arkc2]
> comment = centos samba4 share2
> path = /rocket/cifs/cifs2
> #public = no
> #read only = no
> writable = yes
> #guest ok = no
> #vfs objects = acl_xattr
> #acl_xattr:ignore system acls = yes
> 
> admin users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadmin at qa.arkivio.com,
> @"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com",arkadmin at QA.ARKIVIO.COM,QA\
> arkadmin,QA.ARKIVIO.COM\arkadmin
> valid users = administrator at qa.arkivio.com,auto-stor at qa.arkivio.com,arkadmin at qa.arkivio.com,
> @"Domain Admins at qa.arkivio.com",@"AutostorAdmins at qa.arkivio.com","QA.ARKIVIO.COM\AutostorAdm
> ins",arkadmin at QA.ARKIVIO.COM,QA\arkadmin,QA.ARKIVIO.COM\arkadmin
> 
> 
> please give some advice,thanks
> 
> 
> 
> 

-- 
Dr. Christian Naumer
Research Scientist
Plattform-Koordinator Bioprozesstechnik

B.R.A.I.N Aktiengesellschaft
Darmstaedter Str. 34-36, D-64673 Zwingenberg
e-mail cn at brain-biotech.de, homepage www.brain-biotech.de
fon +49-6251-9331-30  /   fax +49-6251-9331-11

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Vorstand: Dr. Juergen Eck (Vorsitzender), Frank Goebel
Aufsichtsratsvorsitzender: Dr. Ludger Mueller



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