[Samba] security = ads parameter not working in samba 4.9.5

Sac Isilia udaypratap.singh65 at gmail.com
Fri Nov 29 14:36:54 UTC 2019

Hi Rowland,

Below is the output that is produced.

Collected config  --- 2019-11-29-15:33 -----------

Hostname: esmad1apl01
DNS Domain: emea.media.global.loc
FQDN: esmad1apl01.emea.media.global.loc


Kerberos SRV _kerberos._tcp.emea.media.global.loc record verified ok,
sample output:
;; Truncated, retrying in TCP mode.

_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88
_kerberos._tcp.emea.media.global.loc    service = 0 100 88

Wrong password or kerberos REALM problems.
Samba is running as an Unix domain member but 'winbindd' is NOT running.
Check that the winbind package is installed.
Checking file: /etc/os-release
PRETTY_NAME="Debian GNU/Linux 10 (buster)"
NAME="Debian GNU/Linux"
VERSION="10 (buster)"


This computer is running Debian 10.2 x86_64

running command : ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet scope host lo
    inet6 ::1/128 scope host
2: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP group default qlen 1000
    link/ether 00:50:56:85:24:4c brd ff:ff:ff:ff:ff:ff
    inet brd scope global ens192
    inet6 fe80::250:56ff:fe85:244c/64 scope link

Checking file: /etc/hosts       localhost       debian01.emea.media.global.loc  debian01 esmad1apl01.emea.media.global.loc esmad1apl01

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters


Checking file: /etc/resolv.conf
# Generated by NetworkManager
search emea.media.global.loc media.global.loc dmz.local
americas.media.global.loc ymedia.mad


Checking file: /etc/krb5.conf
        default_realm = EMEA.MEDIA.GLOBAL.LOC

# The following krb5.conf variables are only for MIT Kerberos.
        kdc_timesync = 1
        ccache_type = 4
        forwardable = true
        proxiable = true

# The following encryption type specification will be used by MIT Kerberos
# if uncommented.  In general, the defaults in the MIT Kerberos code are
# correct and overriding these specifications only serves to disable new
# encryption types as they are added, creating interoperability problems.
# The only time when you might need to uncomment these lines and change
# the enctypes is if you have local software that will break on ticket
# caches containing ticket encryption types it doesn't know about (such as
# old versions of Sun Java).

#       default_tgs_enctypes = des3-hmac-sha1
#       default_tkt_enctypes = des3-hmac-sha1
#       permitted_enctypes = des3-hmac-sha1

# The following libdefaults parameters are only for Heimdal Kerberos.
        fcc-mit-ticketflags = true


        MEDIA.GLOBAL.LOC = {
        kdc =
        default_domain = media.global.loc
        admin_server =

        kdc =
        default_domain = media.global.loc
        admin_server =


 media.global.loc = MEDIA.GLOBAL.LOC
 .media.global.loc = MEDIA.GLOBAL.LOC
.emea-media.global.loc = EMEA.MEDIA.GLOBAL.LOC
 emea-media.global.loc = EMEA.MEDIA.GLOBAL.LOC


Checking file: /etc/nsswitch.conf
# /etc/nsswitch.conf
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat
gshadow:        files

#hosts:          files mdns4_minimal [NOTFOUND=return] dns myhostname
hosts:          files dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

Checking file: /etc/samba/smb.conf
# Sample configuration file for the Samba suite for Debian GNU/Linux.
# 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 most of which
# are not shown in this example
# Some options that are often worth tuning have been included as
# commented-out examples in this file.
#  - When such options are commented with ";", the proposed setting
#    differs from the default Samba behaviour
#  - When commented with "#", the proposed setting is the default
#    behaviour of Samba but the option is considered important
#    enough to be mentioned here
# 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 =======================


## Browsing/Identification ###

# Change this to the workgroup/NT-domain name your Samba server will part of

   workgroup = EMEA-MEDIA
   passdb backend = tdbsam
   security = ADS
   idmap config EMEA-MEDIA : range = 16777216-33554431
   dedicated keytab file = /etc/krb5.keytab
   kerberos method = secrets and keytab
   winbind use default domain = yes
   idmap config * : backend = tdb
   idmap config * : range = 3000-7999
   idmap config EMEA-MEDIA : backend = ad
   idmap config EMEA-MEDIA : schema_mode = rfc2307
   idmap config EMEA-MEDIA : unix_nss_info = yes
   vfs objects = acl_xattr
   map acl inherit = yes
   store dos attributes = yes
#   idmap config * : backend = tdb

#### Networking ####

# The specific set of interfaces / networks to bind to
# This can be either the interface name or an IP address/netmask;
# interface names are normally preferred
;   interfaces = eth0

# Only bind to the named interfaces and/or networks; you must use the
# 'interfaces' option above to use this.
# It is recommended that you enable this feature if your Samba machine is
# not protected by a firewall or is a firewall itself.  However, this
# option cannot handle dynamic or non-broadcast interfaces correctly.
;   bind interfaces only = yes

#### Debugging/Accounting ####

# This tells Samba to use a separate log file for each machine
# that connects
   log file = /var/log/samba/log.%m

# Cap the size of the individual log files (in KiB).
   max log size = 1000

# We want Samba to only log to /var/log/samba/log.{smbd,nmbd}.
# Append syslog at 1 if you want important messages to be sent to syslog too.
   logging = file

# Do something sensible when Samba crashes: mail the admin a backtrace
   panic action = /usr/share/samba/panic-action %d

####### Authentication #######
# Server role. Defines in which mode Samba will operate. Possible
# values are "standalone server", "member server", "classic primary
# domain controller", "classic backup domain controller", "active
# directory domain controller".
# Most people will want "standalone server" or "member server".
# Running as "active directory domain controller" will require first
# running "samba-tool domain provision" to wipe databases and create a
# new domain.
#   server role = standalone server

   obey pam restrictions = yes

# This boolean parameter controls whether Samba attempts to sync the Unix
# password with the SMB password when the encrypted SMB password in the
# passdb is changed.
#   unix password sync = yes

# For Unix password sync to work on a Debian GNU/Linux system, the following
# parameters must be set (thanks to Ian Kahan <<
kahan at informatik.tu-muenchen.de> for
# sending the correct chat script for the passwd program in Debian Sarge).
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n
*Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .

# This boolean controls whether PAM will be used for password changes
# when requested by an SMB client instead of the program listed in
# 'passwd program'. The default is 'no'.
   pam password change = yes

# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
   map to guest = bad user

########## Domains ###########

# The following settings only takes effect if 'server role = primary
# classic domain controller', 'server role = backup domain controller'
# or 'domain logons' is set

# It specifies the location of the user's
# profile directory from the client point of view) The following
# required a [profiles] share to be setup on the samba server (see
# below)
;   logon path = \\%N\profiles\%U
# Another common choice is storing the profile in the user's home directory
# (this is Samba's default)
#   logon path = \\%N\%U\profile

# The following setting only takes effect if 'domain logons' is set
# It specifies the location of a user's home directory (from the client
# point of view)
;   logon drive = H:
#   logon home = \\%N\%U

# The following setting only takes effect if 'domain logons' is set
# It specifies the script to run during logon. The script must be stored
# in the [netlogon] share
# NOTE: Must be store in 'DOS' file format convention
;   logon script = logon.cmd

# This allows Unix users to be created on the domain controller via the SAMR
# RPC pipe.  The example command creates a user account with a disabled Unix
# password; please adapt to your needs
; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos
"" %u

# This allows machine accounts to be created on the domain controller via
# SAMR RPC pipe.
# The following assumes a "machines" group exists on the system
; add machine script  = /usr/sbin/useradd -g machines -c "%u machine
account" -d /var/lib/samba -s /bin/false %u

# This allows Unix groups to be created on the domain controller via the
# RPC pipe.
; add group script = /usr/sbin/addgroup --force-badname %g

############ Misc ############

# 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 = /home/samba/etc/smb.conf.%m

# Some defaults for winbind (make sure you're not using the ranges
# for something else.)
;   idmap config * :              backend = tdb
;   idmap config * :              range   = 3000-7999
;   idmap config YOURDOMAINHERE : backend = tdb
;   idmap config YOURDOMAINHERE : range   = 100000-999999
;   template shell = /bin/bash

# Setup usershare options to enable non-root users to share folders
# with the net usershare command.

# Maximum number of usershare. 0 means that usershare is disabled.
#   usershare max shares = 100

# Allow users who've been granted usershare privileges to create
# public shares, not just authenticated ones
   usershare allow guests = yes

#======================= Share Definitions =======================

   comment = Home Directories
   browseable = no

# By default, the home directories are exported read-only. Change the
# next parameter to 'no' if you want to be able to write to them.
   read only = yes

# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
   create mask = 0700

# Directory creation mask is set to 0700 for security reasons. If you want
# create dirs. with group=rw permissions, set next parameter to 0775.
   directory mask = 0700

# By default, \\server\username shares can be connected to by anyone
# with access to the samba server.
# The following parameter makes sure that only "username" can connect
# to \\server\username
# This might need tweaking when using external authentication schemes
   valid users = %S
# Un-comment the following and create the netlogon directory for Domain
# (you need to configure Samba to act as a domain controller too.)
;   comment = Network Logon Service
;   path = /home/samba/netlogon
;   guest ok = yes
;   read only = yes

# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;   comment = Users profiles
;   path = /home/samba/profiles
;   guest ok = no
;   browseable = no
;   create mask = 0600
;   directory mask = 0700

   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700

# Windows clients look for this share name as a source of downloadable
# printer drivers
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# You may need to replace 'lpadmin' with the name of the group your
# admin users are members of.
# Please note that you also need to set appropriate Unix permissions
# to the drivers directory for these users to have write rights in it
;   write list = root, @lpadmin


Running as Unix domain member and no user.map detected.
This is possible with an auth-only setup, checking also for NFS parts
    Warning, /etc/idmapd.conf does not exist


Installed packages:
ii  acl                                   2.2.53-4
    amd64        access control list - utilities
ii  attr                                  1:2.4.48-4
    amd64        utilities for manipulating filesystem extended attributes
ii  fonts-quicksand                       0.2016-2
    all          sans-serif font with round attributes
ii  krb5-config                           2.6
   all          Configuration files for Kerberos Version 5
ii  krb5-locales                          1.17-3
    all          internationalization support for MIT Kerberos
ii  krb5-user                             1.17-3
    amd64        basic programs to authenticate using MIT Kerberos
ii  libacl1:amd64                         2.2.53-4
    amd64        access control list - shared library
ii  libattr1:amd64                        1:2.4.48-4
    amd64        extended attribute handling - shared library
ii  libgssapi-krb5-2:amd64                1.17-3
    amd64        MIT Kerberos runtime libraries - krb5 GSS-API Mechanism
ii  libkrb5-3:amd64                       1.17-3
    amd64        MIT Kerberos runtime libraries
ii  libkrb5support0:amd64                 1.17-3
    amd64        MIT Kerberos runtime libraries - Support library
ii  libnfs12:amd64                        3.0.0-2
   amd64        NFS client library (shared library)
ii  libnfsidmap2:amd64                    0.25-5.1
    amd64        NFS idmapping library
ii  libnss-winbind:amd64                  2:4.9.5+dfsg-5+deb10u1
    amd64        Samba nameservice integration plugins
ii  libpam-winbind:amd64                  2:4.9.5+dfsg-5+deb10u1
    amd64        Windows domain authentication integration plugin
ii  libwbclient0:amd64                    2:4.9.5+dfsg-5+deb10u1
    amd64        Samba winbind client library
ii  python-samba                          2:4.9.5+dfsg-5+deb10u1
    amd64        Python bindings for Samba
ii  samba                                 2:4.9.5+dfsg-5+deb10u1
    amd64        SMB/CIFS file, print, and login server for Unix
ii  samba-common                          2:4.9.5+dfsg-5+deb10u1
    all          common files used by both the Samba server and client
ii  samba-common-bin                      2:4.9.5+dfsg-5+deb10u1
    amd64        Samba common files used by both the server and the client
ii  samba-dsdb-modules:amd64              2:4.9.5+dfsg-5+deb10u1
    amd64        Samba Directory Services Database
ii  samba-libs:amd64                      2:4.9.5+dfsg-5+deb10u1
    amd64        Samba core libraries
ii  samba-vfs-modules:amd64               2:4.9.5+dfsg-5+deb10u1
    amd64        Samba Virtual FileSystem plugins
ii  spice-client-glib-usb-acl-helper      0.35-2
    amd64        Helper tool to validate usb ACLs
ii  winbind                               2:4.9.5+dfsg-5+deb10u1
    amd64        service to resolve user and group information from Windows
NT servers


Sachin Kumar

On Fri, Nov 29, 2019 at 7:33 PM Rowland penny <rpenny at samba.org> wrote:

> On 29/11/2019 12:18, Sac Isilia wrote:
> > Hi Rowland,
> >
> > Exactly. I commented the same line that you mentioned, but the same
> > error persists.
> >
> OK, try the attached script.
> Rowland

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