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

Erich Enke twilit77 at fastmail.fm
Thu Oct 30 21:45:03 GMT 2003

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  (
[2003/10/29 16:46:03, 2]
  Returning domain sid for domain TEC ->
[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
  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]
  _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  (
[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  (
[2003/10/30 14:07:40, 2]
  Returning domain sid for domain TEC ->
[2003/10/30 14:07:40, 2]
  _samr_set_userinfo2: ACCESS DENIED (granted: 0x000000b0;  required:
[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
# to check that you have not made any basic syntactic errors.
#======================= Global Settings

# 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
# 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

# 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 =

# 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 =
# Cause this host to announce itself to local subnets here
;   remote announce =

# 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
# 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
# the default order is "host lmhosts wins bcast". "host" means use the
# system gethostbyname() function call that will use either /etc/hosts OR
# DNS or NIS depending on the settings of /etc/host.config,
# 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
# 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
;   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
   comment = Home Directories
   browseable = no
   writable = yes

# Un-comment the following and create the netlogon directory for Domain
   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
    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
   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
   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
   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
# home directory. Note that fred must have write access to the spool
# 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

Thanks in advance,
Erich Patrick T Enke (epte)

http://www.fastmail.fm - Same, same, but different

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