[Samba] Re: XP Pro Autheticate to Samba 3.0 PDC fails: "Access is denied"

Erich Enke twilit77 at fastmail.fm
Thu Oct 30 23:59:17 GMT 2003


Oh glorious day!  I've figured it out.

For those interested, when joining a samba PDC for the first time from
XP, you must login with the root account.  I had tried this before, but
it didn't work because I didn't have a machine account for the machine I
was logging in from (at that time).  Note that the root _samba_ account
shouldn't have the same passwd as the root _linux_ account.

Cheers,
epte

On Thu, 30 Oct 2003 15:45:03 -0600, "Erich Enke" <twilit77 at fastmail.fm>
said:
> I've read the docs.  I've bought the book.  I've searched the lists.  For
> three days and still no joy.  Please help.  Here are the details:
> 
> OS: Redhat 9.0 on a Dell Poweredge 2650
> Using stable samba 3.0 rpm downloaded straight from the site
> Configuring by any means necessary: webmin, swat, but right now, smb.conf
> 
> I have set up a linux account for smbuser, added him to ntadmins group,
> net group mapped ntadmins to "Administrators", added the XP patch to set
> RequireSignOrSeal to 0, set the smbpasswd, enabled the smbpasswd account,
> restarted smb services, set up a NetLogon and Profiles share (with no
> logon script to make things easier), created a home directory for smbuser
> and such, added a machine account for the machine I am trying to connect
> from (alpha), created the linux user for that (alpha$), and then tried to
> add the XP computer (alpha) to the domain (TEC).  It asks for username
> and passwd.  I supply both for smbuser.  It says "Access is denied".
> 
> Next step.  I turned up the logging level to 3 (2 didn't give anything
> useful).  Here is the log:
> 
> [2003/10/29 16:46:03, 2] auth/auth.c:check_ntlm_password(302)
>   check_ntlm_password:  authentication for user [smbuser] -> [smbuser] ->
>   [smbuser] succeeded
> ...
> [2003/10/29 16:46:03, 2] lib/access.c:check_access(324)
>   Allowed connection from  (192.168.0.199)
> ...
> [2003/10/29 16:46:03, 2]
> rpc_server/srv_samr_nt.c:_samr_lookup_domain(2540)
>   Returning domain sid for domain TEC ->
>   S-1-5-21-1064686550-1196878949-2878807255
> [2003/10/29 16:46:03, 3] rpc_server/srv_pipe_hnd.c:free_pipe_context(544)
>   free_pipe_context: destroying talloc pool of size 6
> [2003/10/29 16:46:03, 3] smbd/process.c:process_smb(890)
>   Transaction 30 of length 164
> [2003/10/29 16:46:03, 3] smbd/process.c:switch_message(685)
>   switch message SMBtrans (pid 19763)
> [2003/10/29 16:46:03, 3] smbd/ipc.c:reply_trans(514)
>   trans <\PIPE\> data=76 params=0 setup=2
> [2003/10/29 16:46:03, 3] smbd/ipc.c:named_pipe(326)
>   named pipe command on <> name
> [2003/10/29 16:46:03, 3] smbd/ipc.c:api_fd_reply(288)
>   Got API command 0x26 on pipe "samr" (pnum 740b)free_pipe_context:
>   destroying talloc pool of size 0
> [2003/10/29 16:46:03, 3] rpc_server/srv_pipe.c:api_rpcTNP(1495)
>   api_rpcTNP: rpc command: SAMR_OPEN_DOMAIN
> [2003/10/29 16:46:03, 3] lib/util_seaccess.c:se_access_check(267)
> [2003/10/29 16:46:03, 3] lib/util_seaccess.c:se_access_check(268)
>   se_access_check: user sid is
>   S-1-5-21-1064686550-1196878949-2878807255-2004
>   se_access_check: also S-1-5-21-1064686550-1196878949-2878807255-2005
>   se_access_check: also S-1-1-0
>   se_access_check: also S-1-5-2
>   se_access_check: also S-1-5-11
> [2003/10/29 16:46:03, 2]
> rpc_server/srv_samr_nt.c:access_check_samr_object(93)
>   _samr_open_domain: ACCESS DENIED  (requested: 0x00000211)
> 
> 
> This was before I added smbuser to the ntadmins group.  Now after:
> 
> [2003/10/30 14:07:39, 2] auth/auth.c:check_ntlm_password(302)
>   check_ntlm_password:  authentication for user [smbuser] -> [smbuser] ->
>   [smbuser] succeeded
> [2003/10/30 14:07:39, 2] lib/access.c:check_access(324)
>   Allowed connection from  (192.168.0.199)
> [2003/10/30 14:07:40, 2] smbd/server.c:exit_server(558)
>   Closing connections
> [2003/10/30 14:07:40, 2] auth/auth.c:check_ntlm_password(302)
>   check_ntlm_password:  authentication for user [smbuser] -> [smbuser] ->
>   [smbuser] succeeded
> [2003/10/30 14:07:40, 2] lib/access.c:check_access(324)
>   Allowed connection from  (192.168.0.199)
> [2003/10/30 14:07:40, 2]
> rpc_server/srv_samr_nt.c:_samr_lookup_domain(2540)
>   Returning domain sid for domain TEC ->
>   S-1-5-21-1064686550-1196878949-2878807255
> [2003/10/30 14:07:40, 2]
> rpc_server/srv_samr_nt.c:access_check_samr_function(115)
>   _samr_set_userinfo2: ACCESS DENIED (granted: 0x000000b0;  required:
>   0x00000024)
> [2003/10/30 14:07:40, 2] smbd/server.c:exit_server(558)
> 
> Upon trying a manual net join from the server, with "net join pdc -U
> smbuser" I get:
> 
> Create of workstation account failed
> Unable to join domain TEC.
> 
> Possibly this could be because the server itself doesn't have a samba
> machine account??
> 
> And finally, here's my smb.conf:
> 
> # This is the main Samba configuration file. You should read the
> # smb.conf(5) manual page in order to understand the options listed
> # here. Samba has a huge number of configurable options (perhaps too
> # many!) most of which are not shown in this example
> #
> # Any line which starts with a ; (semi-colon) or a # (hash)
> # is a comment and is ignored. In this example we will use a #
> # for commentry and a ; for parts of the config file that you
> # may wish to enable
> #
> # NOTE: Whenever you modify this file you should run the command
> "testparm"
> # to check that you have not made any basic syntactic errors.
> #
> #======================= Global Settings
> =====================================
> [global]
> 
> # Logging level controls how much information to log
>    log level = 2
> 
> # Windows server name
>    netbios name = axios
> 
> # workgroup = NT-Domain-Name or Workgroup-Name
>    workgroup = TEC
> 
> # Give clients the correct time
>    time server = yes
> 
> # server string is the equivalent of the NT Description field
>    server string = The Executive Center File Server
> 
> # This option is important for security. It allows you to restrict
> # connections to machines which are on your local network. The
> # following example restricts access to two C class networks and
> # the "loopback" interface. For more examples of the syntax see
> # the smb.conf man page
>    hosts allow = 192.168.0. 127.
> 
> # if you want to automatically load your printer list rather
> # than setting them up individually then you'll need this
>    printcap name = /etc/printcap
>    load printers = yes
> 
> # It should not be necessary to spell out the print system type unless
> # yours is non-standard. Currently supported print systems include:
> # bsd, sysv, plp, lprng, aix, hpux, qnx
> ;   printing = bsd
> 
> # Uncomment this if you want a guest account, you must add this to
> /etc/passwd
> # otherwise the user "nobody" is used
> ;  guest account = pcguest
> guest account = nobody
> 
> # this tells Samba to use a separate log file for each machine
> # that connects
>    log file = /var/log/samba/log.%m
> 
> # Put a capping on the size of the log files (in Kb).
>    max log size = 50
> 
> # Security mode. Most people will want user level security. See
> # security_level.txt for details.
>    security = user
> # Use password server option only with security = server
> ;   password server = <NT-Server-Name>
> 
> # Password Level allows matching of _n_ characters of the password for
> # all combinations of upper and lower case.
> ;  password level = 8
> ;  username level = 8
> 
> # You may wish to use password encryption. Please read
> # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
> # Do not enable this option unless you have read those documents
>   encrypt passwords = yes
>   smb passwd file = /etc/samba/smbpasswd
> 
> # The following are needed to allow password changing from Windows to
> # update the Linux system password also.
> # NOTE: Use these with 'encrypt passwords' and 'smb passwd file' above.
> # NOTE2: You do NOT need these to allow workstations to change only
> #        the encrypted SMB passwords. They allow the Unix password
> #        to be kept in sync with the SMB password.
>   unix password sync = Yes
>   passwd program = /usr/bin/passwd %u
>   passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n
>   *passwd:*all*authentication*tokens*updated*successfu
> lly*
> 
> # Unix users can map to different SMB User names
> ;  username map = /etc/samba/smbusers
> 
> # Using the following line enables you to customise your configuration
> # on a per machine basis. The %m gets replaced with the netbios name
> # of the machine that is connecting
> ;   include = /etc/samba/smb.conf.%m
> 
> # Most people will find that this option gives better performance.
> # See speed.txt and the manual pages for details
>    socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
> 
> # Configure Samba to use multiple interfaces
> # If you have multiple network interfaces then you must list them
> # here. See the man page for details.
>    interfaces = 192.168.0.3/24
> 
> # Configure remote browse list synchronisation here
> #  request announcement to, or browse list sync from:
> #       a specific host or from / to a whole subnet (see below)
> ;   remote browse sync = 192.168.3.25 192.168.5.255
> # Cause this host to announce itself to local subnets here
> ;   remote announce = 192.168.1.255 192.168.2.44
> 
> # Browser Control Options:
> # set local master to no if you don't want Samba to become a master
> # browser on your network. Otherwise the normal election rules apply
>    local master = yes
> 
> # OS Level determines the precedence of this server in master browser
> # elections. The default value should be reasonable
>    os level = 99
> 
> # Domain Master specifies Samba to be the Domain Master Browser. This
> # allows Samba to collate browse lists between subnets. Don't use this
> # if you already have a Windows NT domain controller doing this job
>    domain master = yes
> 
> # Preferred Master causes Samba to force a local browser election on
> startup
> # and gives it a slightly higher chance of winning the election
>    preferred master = yes
> 
> # Enable this if you want Samba to be a domain logon server for
> # Windows95 workstations.
>    domain logons = yes
> 
> ;domain admin group = @wheel
> 
> # if you enable domain logons then you may want a per-machine or
> # per user logon script
> # run a specific logon batch file per workstation (machine)
>    ;logon script = %m.bat
> # run a specific logon batch file per username
>    ;logon script = %U.bat
> 
> logon drive = h:
> logon home = \\%L\%u\.win_profile\%m
> 
> # Where to store roving profiles (only for Win95 and WinNT)
> #        %L substitutes for this servers netbios name, %U is username
> #        You must uncomment the [Profiles] share below
>    logon path = \\%L\Profiles\%u\%m
>    ;logon script = logon.bat
> 
> # All NetBIOS names must be resolved to IP Addresses
> # 'Name Resolve Order' allows the named resolution mechanism to be
> specified
> # the default order is "host lmhosts wins bcast". "host" means use the
> unix
> # system gethostbyname() function call that will use either /etc/hosts OR
> # DNS or NIS depending on the settings of /etc/host.config,
> /etc/nsswitch.conf
> # and the /etc/resolv.conf file. "host" therefore is system configuration
> # dependant. This parameter is most often of use to prevent DNS lookups
> # in order to resolve NetBIOS names to IP Addresses. Use with care!
> # The example below excludes use of name resolution for machines that are
> NOT
> # on the local network segment
> # - OR - are not deliberately to be known via lmhosts or via WINS.
> ; name resolve order = wins lmhosts bcast
> 
> # Windows Internet Name Serving Support Section:
> # WINS Support - Tells the NMBD component of Samba to enable it's WINS
> Server
> ;   wins support = yes
> 
> # WINS Server - Tells the NMBD components of Samba to be a WINS Client
> #       Note: Samba can be either a WINS Server, or a WINS Client, but
> NOT both
> ;   wins server = w.x.y.z
> 
> # WINS Proxy - Tells Samba to answer name resolution queries on
> # behalf of a non WINS capable client, for this to work there must be
> # at least one  WINS Server on the network. The default is NO.
> ;   wins proxy = yes
> 
> # DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
> # via DNS nslookups. The built-in default for versions 1.9.17 is yes,
> # this has been changed in version 1.9.18 to no.
>    dns proxy = no
> 
> # Case Preservation can be handy - system default is _no_
> # NOTE: These can be set on a per share basis
> ;  preserve case = no
> ;  short preserve case = no
> # Default case is normally upper case for all DOS files
> ;  default case = lower
> # Be very careful with case sensitivity - it can break things!
> ;  case sensitive = no
> 
> #============================ Share Definitions
> ==============================
> [homes]
>    comment = Home Directories
>    browseable = no
>    writable = yes
> 
> # Un-comment the following and create the netlogon directory for Domain
> Logons
> [netlogon]
>    comment = Network Logon Service
>    path = /home/netlogon
>    guest ok = yes
>    write list = smbuser
>    share modes = no
> 
> 
> # Un-comment the following to provide a specific roving profile share
> # the default is to use the user's home directory
> [Profiles]
>     path = /home/profiles
>     browseable = no
>     guest ok = yes
>     writable = yes
>     directory mask = 0700
>     create mask = 0600
> 
> 
> # NOTE: If you have a BSD-style print system there is no need to
> # specifically define each individual printer
> [printers]
>    comment = All Printers
>    path = /var/spool/samba
>    browseable = no
> # Set public = yes to allow user 'guest account' to print
>    guest ok = no
>    writable = no
>    printable = yes
> 
> # This one is useful for people to share files
> [tmp]
>    comment = Temporary file space
>    path = /tmp
>    read only = no
>    public = yes
>    browseable = yes
> 
> # A publicly accessible directory, but read only, except for people in
> # the "staff" group
> [public]
>    comment = Public Stuff
>    path = /home/samba
>    public = yes
>    read only = yes
>    write list = @staff
>    browseable = yes
> 
> # Other examples.
> #
> # A private printer, usable only by fred. Spool data will be placed in
> fred's
> # home directory. Note that fred must have write access to the spool
> directory,
> # wherever it is.
> <snip rest of commented out examples>
> 
> Please help.  I've exhausted my resources.  I'm never one to post to
> lists--I always find my answer online--but this one has me stumped.  I
> can't even figure out how to diagnose the problem, so please: I need
> suggestions.  I need to have this network running by tomorrow at the
> latest.  I've set up samba networks before, but this one is being a royal
> pain.
> 
> Thanks in advance,
> Erich Patrick T Enke (epte)
> 
> -- 
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