CentOS 6
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Configure LDAP Server
2015/04/15
 
Configure LDAP Server in order to share users' accounts in your local networks.
[1] Install OpenLDAP.
[root@dlp ~]#
yum -y install openldap-servers openldap-clients
[root@dlp ~]#
cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG

[root@dlp ~]#
chown ldap. /var/lib/ldap/DB_CONFIG

[root@dlp ~]#
/etc/rc.d/init.d/slapd start

Starting slapd: [ OK ]
[root@dlp ~]#
chkconfig slapd on

[2] Set OpenLDAP admin password.
# generate encrypted password

[root@dlp ~]#
slappasswd

New password:
Re-enter new password:
{SSHA}xxxxxxxxxxxxxxxxxxxxxxxx
[root@dlp ~]#
vi chrootpw.ldif
# specify the password generated above for "olcRootPW" section

dn: olcDatabase={0}config,cn=config
changetype: modify
add: olcRootPW
olcRootPW: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx
[root@dlp ~]#
ldapadd -Y EXTERNAL -H ldapi:/// -f chrootpw.ldif

SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
modifying entry "olcDatabase={0}config,cn=config"
[3] Set your domain name on LDAP DB.
# generate directory manager's password

[root@dlp ~]#
slappasswd

New password:
Re-enter new password:
{SSHA}xxxxxxxxxxxxxxxxxxxxxxxx
[root@dlp ~]#
vi chdomain.ldif
# replace to your own domain name for "dc=***,dc=***" section

# specify the password generated above for "olcRootPW" section

dn: olcDatabase={1}monitor,cn=config
changetype: modify
replace: olcAccess
olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth"
  read by dn.base="cn=Manager,dc=srv,dc=world" read by * none

dn: olcDatabase={2}bdb,cn=config
changetype: modify
replace: olcSuffix
olcSuffix: dc=srv,dc=world

dn: olcDatabase={2}bdb,cn=config
changetype: modify
replace: olcRootDN
olcRootDN: cn=Manager,dc=srv,dc=world

dn: olcDatabase={2}bdb,cn=config
changetype: modify
add: olcRootPW
olcRootPW: {SSHA}xxxxxxxxxxxxxxxxxxxxxxxx

dn: olcDatabase={2}bdb,cn=config
changetype: modify
add: olcAccess
olcAccess: {0}to attrs=userPassword,shadowLastChange by
  dn="cn=Manager,dc=srv,dc=world" write by anonymous auth by self write by * none
olcAccess: {1}to dn.base="" by * read
olcAccess: {2}to * by dn="cn=Manager,dc=srv,dc=world" write by * read
[root@dlp ~]#
ldapmodify -Y EXTERNAL -H ldapi:/// -f chdomain.ldif 

SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
modifying entry "olcDatabase={1}monitor,cn=config"

modifying entry "olcDatabase={2}bdb,cn=config"

modifying entry "olcDatabase={2}bdb,cn=config"

modifying entry "olcDatabase={2}bdb,cn=config"
[root@dlp ~]#
vi basedomain.ldif
# replace to your own domain name for "dc=***,dc=***" section

dn: dc=srv,dc=world
objectClass: top
objectClass: dcObject
objectclass: organization
o: Server World
dc: Srv

dn: cn=Manager,dc=srv,dc=world
objectClass: organizationalRole
cn: Manager
description: Directory Manager

dn: ou=People,dc=srv,dc=world
objectClass: organizationalUnit
ou: People

dn: ou=Group,dc=srv,dc=world
objectClass: organizationalUnit
ou: Group
[root@dlp ~]#
ldapadd -x -D cn=Manager,dc=srv,dc=world -W -f basedomain.ldif

Enter LDAP Password:    
# directory manager's password

adding new entry "dc=srv,dc=world"

adding new entry "cn=Manager,dc=srv,dc=world"

adding new entry "ou=People,dc=srv,dc=world"

adding new entry "ou=Group,dc=srv,dc=world"
[4] If IPTables is running, allow LDAP port.
For "-I INPUT *" section below example, Replace it to your own environment.
[root@dlp ~]#
iptables -I INPUT 5 -p tcp -m state --state NEW -m tcp --dport 389 -j ACCEPT

 
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