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2018-Jul-09 08:55 UTC

[Samba] Errors "Domain password server not available" and "SPNEGO login failed: The request is not supported"

Hi,


I am running an Ubuntu 14.04 server with Samba
2:4.3.11+dfsg-0ubuntu0.14.04.14, which just provides storage services to
the network. It is configured to use an existing Active Directory
infrastructure based on Windows servers.

Since some weeks I am experiencing issues with accessing the network
shares served by Samba (no matter which client/operating system).
Connection/mounting attempts ultimately fail most of the time. I am
seeing errors like "SPNEGO login failed: The request is not
supported."
and "domain_client_validate: Domain password server not available." in
the logs. But sometimes, without changes on the server side, accessing
the shares works fine. An excerpt of the full log is attached below.

I tried many hours already to solve the problem by modifying the Samba
configuration without success, however, the original configuration
worked fine for years.

I have no clue how this issue can be solved and would appreciate any
support.


Thank you in advance and kind regards,
René


Log excerpt:

[2018/07/09 09:28:37.296984,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/lib/util_sock.c:515(open_socket_out_send)
  Connecting to [REDACTED] at port 445
[2018/07/09 09:28:37.297273,  5, pid=31899, effective(0, 0), real(0, 0)]
../lib/util/util_net.c:1055(print_socket_options)
  Socket options:
  	SO_KEEPALIVE = 0
  	SO_REUSEADDR = 0
  	SO_BROADCAST = 0
  	TCP_NODELAY = 1
  	TCP_KEEPCNT = 9
  	TCP_KEEPIDLE = 7200
  	TCP_KEEPINTVL = 75
  	IPTOS_LOWDELAY = 0
  	IPTOS_THROUGHPUT = 0
  	SO_REUSEPORT = 0
  	SO_SNDBUF = 46080
  	SO_RCVBUF = 372480
  	SO_SNDLOWAT = 1
  	SO_RCVLOWAT = 1
  	SO_SNDTIMEO = 0
  	SO_RCVTIMEO = 0
  	TCP_QUICKACK = 1
  	TCP_DEFER_ACCEPT = 0
[2018/07/09 09:28:37.298134,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1837(cli_session_setup_spnego_send)
  Doing spnego session setup (blob length=120)
[2018/07/09 09:28:37.298168,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1864(cli_session_setup_spnego_send)
  got OID=1.3.6.1.4.1.311.2.2.30
  got OID=1.2.840.48018.1.2.2
  got OID=1.2.840.113554.1.2.2
  got OID=1.2.840.113554.1.2.2.3
  got OID=1.3.6.1.4.1.311.2.2.10
[2018/07/09 09:28:37.298190,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1874(cli_session_setup_spnego_send)
  got principal=not_defined_in_RFC4178 at please_ignore
[2018/07/09 09:28:37.298291,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/gensec/gensec_start.c:680(gensec_start_mech)
  Starting GENSEC mechanism spnego
[2018/07/09 09:28:37.298315,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/gensec/gensec_start.c:680(gensec_start_mech)
  Starting GENSEC submechanism ntlmssp
[2018/07/09 09:28:37.298339,  1, pid=31899, effective(0, 0), real(0, 0)]
../librpc/ndr/ndr.c:402(ndr_print_debug)
       negotiate: struct NEGOTIATE_MESSAGE
          Signature                : 'NTLMSSP'
          MessageType              : NtLmNegotiate (1)
          NegotiateFlags           : 0x62088215 (1644724757)
                 1: NTLMSSP_NEGOTIATE_UNICODE
                 0: NTLMSSP_NEGOTIATE_OEM
                 1: NTLMSSP_REQUEST_TARGET
                 1: NTLMSSP_NEGOTIATE_SIGN
                 0: NTLMSSP_NEGOTIATE_SEAL
                 0: NTLMSSP_NEGOTIATE_DATAGRAM
                 0: NTLMSSP_NEGOTIATE_LM_KEY
                 0: NTLMSSP_NEGOTIATE_NETWARE
                 1: NTLMSSP_NEGOTIATE_NTLM
                 0: NTLMSSP_NEGOTIATE_NT_ONLY
                 0: NTLMSSP_ANONYMOUS
                 0: NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED
                 0: NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED
                 0: NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL
                 1: NTLMSSP_NEGOTIATE_ALWAYS_SIGN
                 0: NTLMSSP_TARGET_TYPE_DOMAIN
                 0: NTLMSSP_TARGET_TYPE_SERVER
                 0: NTLMSSP_TARGET_TYPE_SHARE
                 1: NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY
                 0: NTLMSSP_NEGOTIATE_IDENTIFY
                 0: NTLMSSP_REQUEST_NON_NT_SESSION_KEY
                 0: NTLMSSP_NEGOTIATE_TARGET_INFO
                 1: NTLMSSP_NEGOTIATE_VERSION
                 1: NTLMSSP_NEGOTIATE_128
                 1: NTLMSSP_NEGOTIATE_KEY_EXCH
                 0: NTLMSSP_NEGOTIATE_56
          DomainNameLen            : 0x0000 (0)
          DomainNameMaxLen         : 0x0000 (0)
          DomainName               : *
              DomainName               : ''
          WorkstationLen           : 0x0000 (0)
          WorkstationMaxLen        : 0x0000 (0)
          Workstation              : *
              Workstation              : ''
          Version: struct ntlmssp_VERSION
              ProductMajorVersion      : NTLMSSP_WINDOWS_MAJOR_VERSION_6 (6)
              ProductMinorVersion      : NTLMSSP_WINDOWS_MINOR_VERSION_1 (1)
              ProductBuild             : 0x0000 (0)
              Reserved: ARRAY(3)
                  [0]                      : 0x00 (0)
                  [1]                      : 0x00 (0)
                  [2]                      : 0x00 (0)
              NTLMRevisionCurrent      : NTLMSSP_REVISION_W2K3 (15)
[2018/07/09 09:28:37.298917,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_client.c:270(ntlmssp_client_challenge)
  Got challenge flags:
[2018/07/09 09:28:37.298934,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.298984,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_client.c:726(ntlmssp_client_challenge)
  NTLMSSP: Set final flags:
[2018/07/09 09:28:37.298996,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.299027,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/07/09 09:28:37.299037,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.299067,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_sign.c:633(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - using NTLM1
[2018/07/09 09:28:37.299462,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:2216(cli_session_setup_done_spnego)
  SPNEGO login failed: The request is not supported.
[2018/07/09 09:28:37.299558,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/lib/util_sock.c:515(open_socket_out_send)
  Connecting to [REDACTED] at port 445
[2018/07/09 09:28:37.299857,  5, pid=31899, effective(0, 0), real(0, 0)]
../lib/util/util_net.c:1055(print_socket_options)
  Socket options:
  	SO_KEEPALIVE = 0
  	SO_REUSEADDR = 0
  	SO_BROADCAST = 0
  	TCP_NODELAY = 1
  	TCP_KEEPCNT = 9
  	TCP_KEEPIDLE = 7200
  	TCP_KEEPINTVL = 75
  	IPTOS_LOWDELAY = 0
  	IPTOS_THROUGHPUT = 0
  	SO_REUSEPORT = 0
  	SO_SNDBUF = 46080
  	SO_RCVBUF = 372480
  	SO_SNDLOWAT = 1
  	SO_RCVLOWAT = 1
  	SO_SNDTIMEO = 0
  	SO_RCVTIMEO = 0
  	TCP_QUICKACK = 1
  	TCP_DEFER_ACCEPT = 0
[2018/07/09 09:28:37.300719,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1837(cli_session_setup_spnego_send)
  Doing spnego session setup (blob length=120)
[2018/07/09 09:28:37.300772,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1864(cli_session_setup_spnego_send)
  got OID=1.3.6.1.4.1.311.2.2.30
  got OID=1.2.840.48018.1.2.2
  got OID=1.2.840.113554.1.2.2
  got OID=1.2.840.113554.1.2.2.3
  got OID=1.3.6.1.4.1.311.2.2.10
[2018/07/09 09:28:37.300800,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:1874(cli_session_setup_spnego_send)
  got principal=not_defined_in_RFC4178 at please_ignore
[2018/07/09 09:28:37.300905,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/gensec/gensec_start.c:680(gensec_start_mech)
  Starting GENSEC mechanism spnego
[2018/07/09 09:28:37.300927,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/gensec/gensec_start.c:680(gensec_start_mech)
  Starting GENSEC submechanism ntlmssp
[2018/07/09 09:28:37.300950,  1, pid=31899, effective(0, 0), real(0, 0)]
../librpc/ndr/ndr.c:402(ndr_print_debug)
       negotiate: struct NEGOTIATE_MESSAGE
          Signature                : 'NTLMSSP'
          MessageType              : NtLmNegotiate (1)
          NegotiateFlags           : 0x62088215 (1644724757)
                 1: NTLMSSP_NEGOTIATE_UNICODE
                 0: NTLMSSP_NEGOTIATE_OEM
                 1: NTLMSSP_REQUEST_TARGET
                 1: NTLMSSP_NEGOTIATE_SIGN
                 0: NTLMSSP_NEGOTIATE_SEAL
                 0: NTLMSSP_NEGOTIATE_DATAGRAM
                 0: NTLMSSP_NEGOTIATE_LM_KEY
                 0: NTLMSSP_NEGOTIATE_NETWARE
                 1: NTLMSSP_NEGOTIATE_NTLM
                 0: NTLMSSP_NEGOTIATE_NT_ONLY
                 0: NTLMSSP_ANONYMOUS
                 0: NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED
                 0: NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED
                 0: NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL
                 1: NTLMSSP_NEGOTIATE_ALWAYS_SIGN
                 0: NTLMSSP_TARGET_TYPE_DOMAIN
                 0: NTLMSSP_TARGET_TYPE_SERVER
                 0: NTLMSSP_TARGET_TYPE_SHARE
                 1: NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY
                 0: NTLMSSP_NEGOTIATE_IDENTIFY
                 0: NTLMSSP_REQUEST_NON_NT_SESSION_KEY
                 0: NTLMSSP_NEGOTIATE_TARGET_INFO
                 1: NTLMSSP_NEGOTIATE_VERSION
                 1: NTLMSSP_NEGOTIATE_128
                 1: NTLMSSP_NEGOTIATE_KEY_EXCH
                 0: NTLMSSP_NEGOTIATE_56
          DomainNameLen            : 0x0000 (0)
          DomainNameMaxLen         : 0x0000 (0)
          DomainName               : *
              DomainName               : ''
          WorkstationLen           : 0x0000 (0)
          WorkstationMaxLen        : 0x0000 (0)
          Workstation              : *
              Workstation              : ''
          Version: struct ntlmssp_VERSION
              ProductMajorVersion      : NTLMSSP_WINDOWS_MAJOR_VERSION_6 (6)
              ProductMinorVersion      : NTLMSSP_WINDOWS_MINOR_VERSION_1 (1)
              ProductBuild             : 0x0000 (0)
              Reserved: ARRAY(3)
                  [0]                      : 0x00 (0)
                  [1]                      : 0x00 (0)
                  [2]                      : 0x00 (0)
              NTLMRevisionCurrent      : NTLMSSP_REVISION_W2K3 (15)
[2018/07/09 09:28:37.301526,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_client.c:270(ntlmssp_client_challenge)
  Got challenge flags:
[2018/07/09 09:28:37.301543,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.301590,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_client.c:726(ntlmssp_client_challenge)
  NTLMSSP: Set final flags:
[2018/07/09 09:28:37.301602,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.301633,  3, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_sign.c:509(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - Initialising with flags:
[2018/07/09 09:28:37.301644,  3, pid=31899, effective(0, 0), real(0, 0)]
../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
[2018/07/09 09:28:37.301681,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_sign.c:633(ntlmssp_sign_reset)
  NTLMSSP Sign/Seal - using NTLM1
[2018/07/09 09:28:37.301999,  3, pid=31899, effective(0, 0), real(0, 0)]
../source3/libsmb/cliconnect.c:2216(cli_session_setup_done_spnego)
  SPNEGO login failed: The request is not supported.
[2018/07/09 09:28:37.302044,  0, pid=31899, effective(0, 0), real(0, 0),
class=auth] ../source3/auth/auth_domain.c:184(domain_client_validate)
  domain_client_validate: Domain password server not available.
[2018/07/09 09:28:37.302060,  5, pid=31899, effective(0, 0), real(0, 0),
class=auth] ../source3/auth/auth.c:252(auth_check_ntlm_password)
  check_ntlm_password: winbind authentication for user [REDACTED] FAILED
with error NT_STATUS_NOT_SUPPORTED
[2018/07/09 09:28:37.302087,  2, pid=31899, effective(0, 0), real(0, 0),
class=auth] ../source3/auth/auth.c:315(auth_check_ntlm_password)
  check_ntlm_password:  Authentication for user [REDACTED] -> [REDACTED]
FAILED with error NT_STATUS_NOT_SUPPORTED
[2018/07/09 09:28:37.302108,  5, pid=31899, effective(0, 0), real(0, 0)]
../source3/auth/auth_ntlmssp.c:188(auth3_check_password)
  Checking NTLMSSP password for [REDACTED] failed: NT_STATUS_NOT_SUPPORTED
[2018/07/09 09:28:37.302131,  5, pid=31899, effective(0, 0), real(0, 0)]
../auth/ntlmssp/ntlmssp_server.c:737(ntlmssp_server_check_password)
  ../auth/ntlmssp/ntlmssp_server.c:737: Checking NTLMSSP password for
[REDACTED] failed: NT_STATUS_NOT_SUPPORTED
[2018/07/09 09:28:37.302153,  2, pid=31899, effective(0, 0), real(0, 0)]
../auth/gensec/spnego.c:716(gensec_spnego_server_negTokenTarg)
  SPNEGO login failed: NT_STATUS_NOT_SUPPORTED

Rowland Penny

2018-Jul-09 09:15 UTC

head link

[Samba] Errors "Domain password server not available" and "SPNEGO login failed: The request is not supported"

On Mon, 9 Jul 2018 10:55:11 +0200
M.Eng. René Schwarz via samba <samba at lists.samba.org> wrote:
> Hi,
> 
> 
> I am running an Ubuntu 14.04 server with Samba
> 2:4.3.11+dfsg-0ubuntu0.14.04.14, which just provides storage services
> to the network. It is configured to use an existing Active Directory
> infrastructure based on Windows servers.
> 
> Since some weeks I am experiencing issues with accessing the network
> shares served by Samba (no matter which client/operating system).
> Connection/mounting attempts ultimately fail most of the time. I am
> seeing errors like "SPNEGO login failed: The request is not
> supported." and "domain_client_validate: Domain password server
not
> available." in the logs. But sometimes, without changes on the server
> side, accessing the shares works fine. An excerpt of the full log is
> attached below.
> 
> I tried many hours already to solve the problem by modifying the Samba
> configuration without success, however, the original configuration
> worked fine for years.
> 
> I have no clue how this issue can be solved and would appreciate any
> support.
> 
> 
> Thank you in advance and kind regards,
> René
> 
> 
At first glance it looks like your Ubuntu server is trying to use
NTLMv1 against something that no longer uses it.

Can you post your smb.conf and tell us what your windows servers are ?

Rowland

samba-ml.20.dignative at spamgourmet.com

2018-Jul-09 09:54 UTC

head link

[Samba] Errors "Domain password server not available" and (samba-ml: samba@lists.samba.org exclusive) "SPNEGO login failed: The request is not supported"

On 2018/07/09 11:15, Rowland Penny via samba - samba at lists.samba.org
wrote:> At first glance it looks like your Ubuntu server is trying to use
> NTLMv1 against something that no longer uses it.
> 
> Can you post your smb.conf and tell us what your windows servers are ?
Hi Rowland,


thank you very much for your quick response. Yes, please find my reduced
smb.conf attached below. I have just removed the 20+ share definitions
we have; they are all similar to the example one displayed.

Unfortunately, I can't tell you any details about the Windows servers
since they are centrally managed (by another organizational unit) and I
don't know much about them.


Kind regards and thank you for your support,
René


[global]
    workgroup = [REDACTED]
    local master = no
    server string = %h server (Samba, Ubuntu)
    wins support = no
    wins server = [REDACTED]
    dns proxy = no
    realm = [REDACTED]
    security = ads
    domain master = no
    domain logons = no
    machine password timeout = 0
    kerberos method = dedicated keytab
    dedicated keytab file = /etc/opt/quest/vas/host.keytab
    idmap uid = 1-2147483647
    idmap gid = 1-2147483647
    encrypt passwords = yes
    lanman auth = no
    ntlm auth = no
    use spnego = yes
    log file = /var/log/samba/samba.log
    max log size = 10000
    syslog = 0
    panic action = /usr/share/samba/panic-action %d
    server role = standalone server
    passdb backend = tdbsam
    obey pam restrictions = yes
    unix password sync = yes
    passwd program = /usr/bin/passwd %u
    passwd chat = *Entersnews*spassword:* %nn *Retypesnews*spassword:*
%nn *passwordsupdatedssuccessfully* .
    pam password change = yes
    map to guest = bad user
    usershare allow guests = yes
    guest account = nobody

[data_exchange]
    path = /srv/shares/data_exchange
    browsable = yes
    public = yes
    writeable = yes
    guest ok = yes
    create mask = 0664
    force create mode = 0664
    directory mask = 2775
    force directory mode = 2775
    admin users = [REDACTED], [REDACTED]
    force user = nobody
    force group = nogroup

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