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-   -   ADS / winbind / samba / kerberos HELP!!! (

jsheffie 08-14-2006 01:39 PM

ADS / winbind / samba / kerberos HELP!!!

I am running Red Hat Enterprise Linux ES 4, and am attempting to workaround some problems but it doesn't seem to be working thus far.

Well, here is my problem.

I have sucessfully joined a domain "A" using net rpc join -S blahblah -U myname and can pull a listing of users and groups through winbind. Problem is, all information being pulled is for Domain "B". I have gone through a few manuals, and have largely based my efforts on the docs hosted by

I know I need to post some configs, but if you have time, let me know what you would like to look at and I will post it up here... rather than aimlessly posting everything.

Edit: for additions below -
I have run an ethereal query on my nic, and all my requests are going to the correct DC. There is no communication to the DC in the second domain whatsoever.

There is also a one way trust between these domains. However, there isn't anyhting within my configs that specify that second domain or DC.

thanks a lot for any help you can give,

centauricw 08-15-2006 10:25 AM

I would want to see smb.conf and krb5.conf.

jsheffie 08-15-2006 11:12 AM

thanks centauricw,

It was making my hair stand on end, so I re-installed. I am about to start over again, with the latest packages this time. I will post them if I run into problems again.


jsheffie 08-15-2006 12:38 PM

Well last time I was joined to the correct domain but only pulled incorrect information. This time I can't join. I know there has got to be a typo somewhere in here.

I haven't tried RedHat's tools for winbind yet, but I'll wait on that until I get a response.

Thanks again for everything.

here are my smb.conf, and krb5.conf files


#======================= Global Settings =====================================

# workgroup = NT-Domain-Name or Workgroup-Name
workgroup = MYLAB.TST
# The above domain is no Fully Qualified. It is a 2003 domain to which there is no public access.

# server string is the equivalent of the NT Description field
server string = Student Linux Portal

# 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 = 192.168.1. 192.168.2. 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 = no

# 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 = cups

# This option tells cups that the data has already been rasterized
cups options = raw

# Uncomment this if you want a guest account, you must add this to /etc/passwd
# otherwise the user "nobody" is used
; guest account = pcguest

# this tells Samba to use a separate log file for each machine
# that connects
log file = /var/log/samba/%m.log
# all log information in one file
# log file = /var/log/samba/smbd.log

# 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 = ads
# 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*successfully*

# 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 = no

# OS Level determines the precedence of this server in master browser
# elections. The default value should be reasonable
; os level = 33

# 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

# 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

# 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

# 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 =

# 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 ==============================
idmap uid = 16777216-33554431
idmap gid = 16777216-33554431
template shell = /bin/false
comment = Home Directories
browseable = no
writable = yes

winbind separator = +
winbind uid = 10000-20000
winbind gid = 10000-20000
winbind enum users = yes
winbind enum groups = yes
winbind use default domain = yes


default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log

default_realm = MYLAB.TST
dns_lookup_realm = false
dns_lookup_kdc = false

kdc = dc1.mylab.tst:88
admin_server = dc1.mylab.tst:749
default_domain = mylab.tst

.mylab.tst = MYLAB.TST
mylab.tst = MYLAB.TST

profile = /var/kerberos/krb5kdc/kdc.conf

pam = {
debug = false
ticket_lifetime = 36000
renew_lifetime = 36000
forwardable = true
krb4_convert = false

jsheffie 08-15-2006 01:27 PM

Here, also, is the error I receive while attempting to join the domain...

#net rpc join -S my.dc.ip.address -U myadminaccount
password: my_password

[2006/08/15 13:36:56, 0] utils/net_rpc_join.c:net_rpc_join_newstyle(350)
Error in domain join verification (credential setup failed): NT_STATUS_INVALID_COMPUTER_NAME

Unable to join domain NETLAB.

I made sure to remove my old computer account from the domain before I started.


jsheffie 08-16-2006 09:01 AM

got it... the problem lies I guess in the order samba and winbind start.

I reordered a few things in smb.conf, putting these in global
winbind separator = +
winbind uid = 10000-20000
winbind gid = 10000-20000
winbind enum users = yes
winbind enum groups = yes
winbind use default domain = yes

Other than that, I shut down samba/winbind, and then started with winbind first.

I also changed the authorization mechanism from SMB to ADS (which strangley fixed my earlier problem of pulling info for a neighboring domain.)

All is well, so this can be considered closed I guess.

thanks guys,

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