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Install Samba PDC + LDAP on Debian Squeeze

1. Prepare the system

Lets assume that domain will be called - ldap, server name - openldap.ldap and samba domain will be LDAP. This settings will be automatically taken while install procces, but we should set host parameters before. In file /etc/hostname as follows:

openldap

and in file /etc/hosts:

10.0.0.42          openldap.ldap       openldap

where 10.0.0.42 is our server's subnetwork ip address 

2. Intalling packages

#apt-get install libpam-ldapd libnss-ldapd  samba smbclient smbfs smbldap-tools slapd mcrypt ldap-utils libgd-tools samba-doc

Pay attention to the following moments:

slapd will ask to set password only for administrator's account. It's name is admin

instead of libnss-ldap and libpam-ldap you should setup libnss-ldapd and libpam-ldapd, you will be asked about things to replace in nsswitch.conf (feel free to check all options)

3. Setup OpenLDAP

We will take sample slapd config as basis. Move /etc/ldap/slap.d somewhere first as may override our config file:

#mv /etc/ldap/slap.d /root/

Our config file should be placed to /etc/ldap/slapd.conf and looks as follows:

# Global Directives:
# Features to permit
#allow bind_v2
# Schema and objectClass definitions
#include         /etc/ldap/schema/core.schema
#include         /etc/ldap/schema/cosine.schema
#include         /etc/ldap/schema/nis.schema
#include         /etc/ldap/schema/inetorgperson.schema
#include         /etc/ldap/schema/samba.schema
include /etc/ldap/schema/core.schema
include /etc/ldap/schema/collective.schema
include /etc/ldap/schema/corba.schema
include /etc/ldap/schema/cosine.schema
include /etc/ldap/schema/duaconf.schema
include /etc/ldap/schema/dyngroup.schema
include /etc/ldap/schema/inetorgperson.schema
include /etc/ldap/schema/java.schema
include /etc/ldap/schema/misc.schema
include /etc/ldap/schema/nis.schema
include /etc/ldap/schema/openldap.schema
include /etc/ldap/schema/ppolicy.schema
include /etc/ldap/schema/samba.schema
# Where the pid file is put. The init.d script
# will not stop the server if you change this.
pidfile         /var/run/slapd/slapd.pid

# List of arguments that were passed to the server
argsfile        /var/run/slapd/slapd.args

# Read slapd.conf(5) for possible values
loglevel        none

# Where the dynamically loaded modules are stored
modulepath /usr/lib/ldap
moduleload back_hdb

# The maximum number of entries that is returned for a search operation
sizelimit 500

# The tool-threads parameter sets the actual amount of cpu's that is used
# for indexing.
tool-threads 1

#######################################################################
# Specific Backend Directives for hdb:
# Backend specific directives apply to this backend until another
# 'backend' directive occurs
backend hdb

#######################################################################
# Specific Backend Directives for 'other':
# Backend specific directives apply to this backend until another
# 'backend' directive occurs
#backend    <other>

#######################################################################
# Specific Directives for database #1, of type hdb:
# Database specific directives apply to this databasse until another
# 'database' directive occurs
database        hdb

# The base of your directory in database #1
suffix          "dc=ldap"

# rootdn directive for specifying a superuser on the database. This is needed
# for syncrepl.
rootdn          "cn=admin,dc=ldap"
rootpw          {MD5}X03MO1qnZdYdgyfeuILPmQ==

# Where the database file are physically stored for database #1
directory       "/var/lib/ldap"

# The dbconfig settings are used to generate a DB_CONFIG file the first
# time slapd starts.  They do NOT override existing an existing DB_CONFIG
# file.  You should therefore change these settings in DB_CONFIG directly
# or remove DB_CONFIG and restart slapd for changes to take effect.

# For the Debian package we use 2MB as default but be sure to update this
# value if you have plenty of RAM
dbconfig set_cachesize 0 2097152 0

# Sven Hartge reported that he had to set this value incredibly high
# to get slapd running at all. See http://bugs.debian.org/303057 for more
# information.

# Number of objects that can be locked at the same time.
dbconfig set_lk_max_objects 1500
# Number of locks (both requested and granted)
dbconfig set_lk_max_locks 1500
# Number of lockers
dbconfig set_lk_max_lockers 1500

# Indices to maintain for this database
index objectClass                       eq,pres
index ou,cn,sn,mail,givenname           eq,pres,sub
index uidNumber,gidNumber,memberUid     eq,pres
index loginShell                        eq,pres
## required to support pdb_getsampwnam
index uid                               pres,sub,eq
## required to support pdb_getsambapwrid()
index displayName                       pres,sub,eq
index nisMapName,nisMapEntry            eq,pres,sub
index sambaSID                          eq
index sambaPrimaryGroupSID              eq
index sambaDomainName                   eq
index default                           sub
index uniqueMember                      eq
index sambaGroupType                    eq
index sambaSIDList                      eq

# Save the time that the entry gets modified, for database #1
lastmod         on

# Checkpoint the BerkeleyDB database periodically in case of system
# failure and to speed slapd shutdown.
checkpoint      512 30

# Where to store the replica logs for database #1
# replogfile /var/lib/ldap/replog

# users can authenticate and change their password
    access to attrs=userPassword,sambaNTPassword,sambaLMPassword,sambaPwdMustChange,sambaPwdLastSet
    by self write
    by anonymous auth
    by * none

# those 2 parameters must be world readable for password aging to work correctly
# (or use a priviledge account in /etc/ldap.conf to bind to the directory)
    access to attrs=shadowLastChange,shadowMax
    by self write
    by * read

# all others attributes are readable to everybody
    access to *
    by * read

# For Netscape Roaming support, each user gets a roaming
# profile for which they have write access to
#access to dn=".*,ou=Roaming,o=morsnet"
#        by dn="cn=admin,dc=example,dc=com" write
#        by dnattr=owner write

#######################################################################
# Specific Directives for database #2, of type 'other' (can be hdb too):
# Database specific directives apply to this databasse until another
# 'database' directive occurs
#database        <other>

# The base of your directory for database #2
#suffix "dc=debian,dc=org"

It differs from the original debian config only by some includes. Pay attention to tabulatioin and other special symbols when pasting this info.

We also should take schema somewhere:

#zcat /usr/share/doc/samba-doc/examples/LDAP/samba.schema.gz > /etc/ldap/schema/samba.schema

Now we should insert the password hash:

slappasswd -h {MD5}

You can generate the has with md5pass command. Then finalize and try to run the service:

slapindex
chown -R openldap:openldap /var/lib/ldap
service slapd start

Check you syslog (e.g. by commang tail -n 100 /var/log/syslog) if something went wrong.

4. Setup Samba

dos charset = CP1251
unix charset = UTF8
display charset = UTF8
workgroup = LDAP
realm = OpenLDAP
server string = %h server
#interfaces = eth0:1 ## Необходимо поправить на свой интерфейс, или вообще убрать
#bind interfaces only = Yes ## Убрать, если нет определенного интерфейса на самбу
map to guest = Bad User
passdb backend = ldapsam:ldap://127.0.0.1/
pam password change = Yes
passwd program = /usr/sbin/smbldap-passwd -u %u
passwd chat = *New*password* %n\n *Retype*new*password* %n\n *all*authentication*tokens*updated*
syslog = 0
time server = Yes
log file = /var/log/samba/log.%m
max log size = 1000
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
add user script = /usr/sbin/smbldap-useradd -m %u -d /domain/home/%u %u
delete user script = /usr/sbin/smbldap-userdel %u -r %u
add group script = /usr/sbin/smbldap-groupadd -p %g
delete group script = /usr/sbin/smbldap-groupdel %g
add user to group script = /usr/sbin/smbldap-groupmod -m %u %g
delete user from group script = /usr/sbin/smbldap-groupmod -x %u %g
set primary group script = /usr/sbin/smbldap-usermod -g %g %u
add machine script = /usr/sbin/smbldap-useradd -w %u
#logon script = logon.bat
##logon path = \\%N\profiles\%U ## Раскомментировать, если нужны переносимые профили
domain logons = Yes
os level = 10
preferred master = Yes
domain master = Yes
dns proxy = No
wins support = Yes
ldap admin dn = cn=admin,dc=ldap
ldap delete dn = Yes
ldap group suffix = ou=group
ldap idmap suffix = ou=idmap
ldap machine suffix = ou=computer
ldap suffix = dc=ldap
ldap ssl = no
ldap user suffix = ou=people
panic action = /usr/share/samba/panic-action %d
map acl inherit = Yes
case sensitive = No
hide unreadable = Yes
map hidden = Yes
map system = Yes
 
[homes]
comment = Home Directories
path = /domain/home/%u
valid users = %S
read only = No
create mask = 0600
directory mask = 0700
browseable = No
 
[netlogon]
path = /domain/netlogon
browseable = No
 
#[profiles] ## Раскомментировать, если нужны переносимые профили
#path = /domain/profiles
#force user = %U
#read only = No
#create mask = 0600
#directory mask = 0700
#guest ok = Yes
#profile acls = Yes
#browseable = No
#csc policy = disable

Pay attention to fields: workgroup, realm.

Don't forget to set password for LDAP in Samba:

#smbpasswd -w {password}

Create necessary directories:

#mkdir -p /domain/netlogon /domain/profiles
#chown -Rf root:root /domain/netlogon /domain/profiles /domain/home
#chmod 1777 /domain/profiles 

And restart Samba

#service samba restart

You can use testparam option to check things.

5. Setup libnss and smb-ldap-utils

LDAP client config (/etc/ldap/ldap.conf) shoul looks as follows:

host 127.0.0.1
base dc=ldap
binddn cn=admin,dc=ldap
bindpw password    
bind_policy soft
pam_password exop
timelimit 15

nss_base_passwd dc=ldap?sub
nss_base_shadow dc=ldap?sub
nss_base_group ou=group,dc=ldap?one

Now lets setup Samba to LDAP integration scripts (/etc/smbldap-tools/smbldap.conf):

##############################################################################
#
# General Configuration
#
##############################################################################
# Put your own SID. To obtain this number do: "net getlocalsid".
# If not defined, parameter is taking from "net getlocalsid" return
SID="S-1-5-21-3384730673-3036888877-1999087345"

# Domain name the Samba server is in charged.
# If not defined, parameter is taking from smb.conf configuration file
# Ex: sambaDomain="IDEALX-NT"
sambaDomain="LDAP"

##############################################################################
#
# LDAP Configuration
#
##############################################################################

# Notes: to use to dual ldap servers backend for Samba, you must patch
# Samba with the dual-head patch from IDEALX. If not using this patch
# just use the same server for slaveLDAP and masterLDAP.
# Those two servers declarations can also be used when you have
# . one master LDAP server where all writing operations must be done
# . one slave LDAP server where all reading operations must be done
#   (typically a replication directory)

# Slave LDAP server
# Ex: slaveLDAP=127.0.0.1
# If not defined, parameter is set to "127.0.0.1"
slaveLDAP="127.0.0.1"

# Slave LDAP port
# If not defined, parameter is set to "389"
slavePort="389"

# Master LDAP server: needed for write operations
# Ex: masterLDAP=127.0.0.1
# If not defined, parameter is set to "127.0.0.1"
masterLDAP="127.0.0.1"

# Master LDAP port
# If not defined, parameter is set to "389"
#masterPort="389"
masterPort="389"

# Use TLS for LDAP
# If set to 1, this option will use start_tls for connection
# (you should also used the port 389)
# If not defined, parameter is set to "0"
ldapTLS="0"

# Use SSL for LDAP
# If set to 1, this option will use SSL for connection
# (standard port for ldaps is 636)
# If not defined, parameter is set to "0"
ldapSSL="0"

# How to verify the server's certificate (none, optional or require)
# see "man Net::LDAP" in start_tls section for more details
verify="require"

# CA certificate
# see "man Net::LDAP" in start_tls section for more details
cafile="/etc/smbldap-tools/ca.pem"

# certificate to use to connect to the ldap server
# see "man Net::LDAP" in start_tls section for more details
clientcert="/etc/smbldap-tools/smbldap-tools.pem"

# key certificate to use to connect to the ldap server
# see "man Net::LDAP" in start_tls section for more details
clientkey="/etc/smbldap-tools/smbldap-tools.key"

# LDAP Suffix
# Ex: suffix=dc=IDEALX,dc=ORG
suffix="dc=ldap"

# Where are stored Users
# Ex: usersdn="ou=Users,dc=IDEALX,dc=ORG"
# Warning: if 'suffix' is not set here, you must set the full dn for usersdn
usersdn="ou=people,${suffix}"

# Where are stored Computers
# Ex: computersdn="ou=Computers,dc=IDEALX,dc=ORG"
# Warning: if 'suffix' is not set here, you must set the full dn for computersdn
computersdn="ou=computer,${suffix}"

# Where are stored Groups
# Ex: groupsdn="ou=Groups,dc=IDEALX,dc=ORG"
# Warning: if 'suffix' is not set here, you must set the full dn for groupsdn
groupsdn="ou=group,${suffix}"

# Where are stored Idmap entries (used if samba is a domain member server)
# Ex: groupsdn="ou=Idmap,dc=IDEALX,dc=ORG"
# Warning: if 'suffix' is not set here, you must set the full dn for idmapdn
idmapdn="ou=idmap,${suffix}"

# Where to store next uidNumber and gidNumber available for new users and groups
# If not defined, entries are stored in sambaDomainName object.
# Ex: sambaUnixIdPooldn="sambaDomainName=${sambaDomain},${suffix}"
# Ex: sambaUnixIdPooldn="cn=NextFreeUnixId,${suffix}"
sambaUnixIdPooldn="sambaDomainName=${sambaDomain},${suffix}"

# Default scope Used
scope="sub"

# Unix password encryption (CRYPT, MD5, SMD5, SSHA, SHA, CLEARTEXT)
hash_encrypt="MD5"

# if hash_encrypt is set to CRYPT, you may set a salt format.
# default is "%s", but many systems will generate MD5 hashed
# passwords if you use "$1$%.8s". This parameter is optional!
crypt_salt_format="%s"

##############################################################################
#
# Unix Accounts Configuration
#
##############################################################################

# Login defs
# Default Login Shell
# Ex: userLoginShell="/bin/bash"
userLoginShell="/bin/bash"

# Home directory
# Ex: userHome="/home/%U"
userHome="/domain/home/%U"

# Default mode used for user homeDirectory
userHomeDirectoryMode="700"

# Gecos
userGecos="System User"

# Default User (POSIX and Samba) GID
defaultUserGid="513"

# Default Computer (Samba) GID
defaultComputerGid="515"

# Skel dir
skeletonDir="/etc/skel"

# Default password validation time (time in days) Comment the next line if
# you don't want password to be enable for defaultMaxPasswordAge days (be
# careful to the sambaPwdMustChange attribute's value)
defaultMaxPasswordAge="365"

##############################################################################
#
# SAMBA Configuration
#
##############################################################################

# The UNC path to home drives location (%U username substitution)
# Just set it to a null string if you want to use the smb.conf 'logon home'
# directive and/or disable roaming profiles
# Ex: userSmbHome="\\PDC-SMB3\%U"
userSmbHome="\\%L\%U"

# The UNC path to profiles locations (%U username substitution)
# Just set it to a null string if you want to use the smb.conf 'logon path'
# directive and/or disable roaming profiles
# Ex: userProfile="\\PDC-SMB3\profiles\%U"
#userProfile="\\%L\profiles\%U"
userProfile=""

# The default Home Drive Letter mapping
# (will be automatically mapped at logon time if home directory exist)
# Ex: userHomeDrive="H:"
userHomeDrive="U:"

# The default user netlogon script name (%U username substitution)
# if not used, will be automatically username.cmd
# make sure script file is edited under dos
# Ex: userScript="startup.cmd" # make sure script file is edited under dos
#userScript="logon.bat"
userScript=""

# Domain appended to the users "mail"-attribute
# when smbldap-useradd -M is used
# Ex: mailDomain="idealx.com"
mailDomain="ldap"

##############################################################################
#
# SMBLDAP-TOOLS Configuration (default are ok for a RedHat) И для Debian Squeeze, хе-хе
#
##############################################################################

# Allows not to use smbpasswd (if with_smbpasswd == 0 in smbldap_conf.pm) but
# prefer Crypt::SmbHash library
with_smbpasswd="0"
smbpasswd="/usr/bin/smbpasswd"

# Allows not to use slappasswd (if with_slappasswd == 0 in smbldap_conf.pm)
# but prefer Crypt:: libraries
with_slappasswd="0"
slappasswd="/usr/sbin/slappasswd"

# comment out the following line to get rid of the default banner
# no_banner="1"

Use the following command to check your SID:

net getlocalsid

One more config to setup is /etc/smbldap-tools/smbldap_bind.conf:

############################
# Credential Configuration #
############################
# Notes: you can specify two differents configuration if you use a
# master ldap for writing access and a slave ldap server for reading access
# By default, we will use the same DN (so it will work for standard Samba
# release)
slaveDN="cn=admin,dc=ldap"
slavePw="password"
masterDN="cn=admin,dc=ldap"
masterPw="password"

This files where taken from examples as follows:

#cp /usr/share/doc/smbldap-tools/examples/smbldap_bind.conf /etc/smbldap-tools/smbldap_bind.conf
#zcat /usr/share/doc/smbldap-tools/examples/smbldap.conf.gz > /etc/smbldap-tools/smbldap.conf

And don't forget to aply permissions then:

#chmod 0644 /etc/smbldap-tools/smbldap.conf
#chmod 0600 /etc/smbldap-tools/smbldap_bind.conf

Tell services to apply things:

#smbldap-populate 

And that's it. Time to check things.

7. Checking

Let's create a new user:

#smbldap-useradd -a -m testuser
#smbldap-passwd testuser 

And login to him:

#su - testuser

Check if chages where aplied:

#getent passwd
#getent group

Time to check logs;) ?

8. GUI management stuff

There are thosands of them. I've tried jxplorer from repos but it's quite unstable. The connection process is simple:

The tree we have looks intresting:

9. Windows 7 to Samba 3.5 entrance

The way to have Win7 in Samba 3 domain is quite tricky. You should disable security on your Windows first. Then create the following .reg file and open is from Administrator account:

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManWorkstation\Parameters]
"DNSNameResolutionRequired"=dword:00000000
"DomainCompatibilityMode"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\System\DNSClient]
"NV PrimaryDnsSuffix"="domen"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters]
"NV Domain"="domen

Change domain to your Samba domain name.

Links

This article was translated from this source:  http://nixclub.pro/node/24

 

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