Ldap: Difference between revisions

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==setup ldap server==
=what does it mean=
Just followed.
dap        Directory Access Protocol, Ldap ancestor
  http://linuxrackers.com/doku.php?id=389_directory_server_setup_using_centos6_rhel6
dit        Directory Information Tree
dsa        Directory System Agent is the element of an X.500 directory service that provides User Agents with access to a portion of the directory
  dse        Directory System Entry. A DSE is a special entry within the LDAP directory that provides information about the directory itself and its configuration.
dua        Directory User Agent
rdn        parts of the DN are called Relative Distinguished Name (RDN)
sasl      Simple Authentication and Security Layer


Install ldap server.
=Install ldap server.=
  yum' -y install openldap openldap-clients openldap-devel openldap-servers
  dnf install 389*


Configure ldap.
=Configure ldap.=
/etc/openldap/ldap.conf
dscreate interactive
  URI ldap://ldap.halfface.se/
=ldapsearch examples=
  BASE dc=halfface,dc=se
Base64 decode. No line wrap.
ldapsearch -o ldif-wrap=no -u -H ldaps://www.halfface.se.se:636 -b 'DC=www,DC=halfface,DC=se' -D username -w _password_ "(&(objectClass=*)(anr=search_string" | perl -MMIME::Base64 -MEncode=decode -n -00 -e 's/\n //g;s/(?<=:: )(\S+)/decode("UTF-8",decode_base64($1))/eg;print' | less -ISRM
  ldapsearch -o ldif-wrap=no -u -H ldaps://www.halfface.se.se:636 -b 'DC=www,DC=halfface,DC=se' -D username -w _password_ "(&(objectClass=*)(anr=search_string" | perl -pe"binmode(STDOUT,':utf8');" -MMIME::Base64 -MEncode=decode -n -00 -e 's/\n +//g;s/(?<=:: )(\S+)/decode("UTF-8",decode_base64($1))/eg;print' | strings
search for numbers higher than 42435.
ldapsearch -x -b ou=People,ou=Nordic,ou=eng,dc=infineon,dc=com "uidNumber>=42435"
search for next suitable gid. Look for good matching number. For some reason I get some low numbers in my test.
ldapsearch -LLL -l 5 -o nettimeout=5 -x -b "dc=example,dc=net" -h ldap.example.com  "uidNumber>=68000" uidNumber | grep uidNumber | awk '{print $2}' | sort -n | less
Wild card search.
  ldapsearch -o ldif-wrap=no -H ldap://<url>:389 -x -D "uid=$USERNAME,cn=users,cn=accounts,dc=company,dc=se" -w $COMPANY_PASSWORD -b "dc=company,dc=se" -s sub -a always '(&(objectClass=*)(cn=*<string>*))'


Configure ldap.
=matching=
/etc/openldap/slapd.conf
Match user belonging to one of the groups.
  include        /etc/openldap/schema/redhat/autofs.schema
  (|(memberOf=CN=%s,OU=Test_Users,DC=matthew,DC=com)(sAMAccountName=%s))
  database bdb
Match user belonging to both groups.
suffix "dc=halfface,dc=se"
  (&(memberOf=CN=%s,OU=Test_Users,DC=matthew,DC=com)(sAMAccountName=%s))
  rootdn "uid=root,dc=halfface,dc=se"
=get root dse=
  rootpw secret
root DSE (the top-level entry of the directory), supported LDAP versions, naming contexts, supported LDAP extensions, and other operational attributes. The root DSE, in particular, provides essential information about the LDAP server and the directory service it hosts, allowing LDAP clients to discover important details about the directory configuration and capabilities.
ldapsearch -o ldif-wrap=no -H ldaps://ldap.int.redbridge.se:636 -x -b "" -s base -a always "(objectClass=*)"
Get root dse using python
  python3 -c 'from ldap3 import Server, Connection, ALL ; server = Server("ipa.demo1.freeipa.org",  get_info=ALL) ; conn = Connection(server, auto_bind=True) ; print(server.info) ;'
Get schemas
python3 -c 'from ldap3 import Server, Connection, ALL ; server = Server("ipa.demo1.freeipa.org", get_info=ALL) ; conn = Connection(server, auto_bind=True) ; print(server.schema) ;'


Change rootpw to output from the following command.
slappasswd
rootpw {SSHA}0BO9AGrX8
Copy database defaults.
  cp /etc/openldap/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
To generate ldif to feed your ldap database.
Change varables to suite your domain.
/usr/share/openldap/migration/migrate_common.ph
Convert local users to ldap users.
/usr/share/openldap/migration/migrate_passwd.pl /temp/user /temp/user.ldif
Import users.
ldapadd -x -D "cn=Manager,dc=halfface,dc=se" -w secret -f /temp/user.ldif -c
Example ldif to add user.
dn: uid=bjorklun,ou=people,dc=halfface,dc=se
uid: bjorklun
cn: Andreas Bjorklund
objectClass: account
objectClass: posixAccount
objectClass: top
objectClass: shadowAccount
userPassword: {crypt}$1$encryptedpasswordheretowork
shadowLastChange: 13080
shadowMax: 99999
shadowWarning: 7
loginShell: /bin/bash
uidNumber: 501
gidNumber: 501
homeDirectory: /home/bjorklun
gecos: Andreas Bjorklund
Adding local groups.
cat /etc/group | sort -k3 -t : -n | tail -22 | head -20 > /temp/group
/usr/share/openldap/migration/migrate_group.pl /temp/group /temp/group.ldif
ldapadd -x -D "uid=root,dc=halfface,dc=se" -w ned71na -f /temp/group.ldif -v
Adding passwd and group.
dn: ou=people,dc=halfface,dc=se
objectclass: organizationalUnit
ou: people
dn: ou=group,dc=halfface,dc=se
objectclass: organizationalUnit
ou: group
Organization Units.
dn: ou=Friends,dc=halfface,dc=se
ou: Friends
objectClass: top
objectClass: organizationalUnit
description: Members of Friends
dn: ou=Work,dc=halfface,dc=se
ou: Work
objectClass: top
objectClass: organizationalUnit
description: Members of Work
ldap attribute.
dn: dc=halfface,dc=se
dc: halfface
description: Root LDAP entry for halfface.se
objectClass: dcObject
objectClass: organizationalUnit
ou: rootobject
dn: ou=People, dc=halfface,dc=se
ou: People
description: All people in organisation
objectClass: organizationalUnit
dn: dc=halfface,dc=se
objectclass: dcObject
objectclass: organization
o: halfface
dc: halfface
dn: cn=Manager,dc=halfface,dc=se
objectclass: organizationalRole
cn: Manager
ldapadd -x -D "cn=Manager,dc=halfface,dc=se" -w secret -f /tmp/newentry -v
ldapsearch -x -b 'dc=halfface,dc=se' '(objectclass=*)'
Configure client.
authconfig --enableshadow --enablemd5 --enableldap --enableldapauth --ldapserver=ldap.halfface.se --ldapbasedn=dc=halfface,dc=se --disableldaptls --disablekrb5 --disablesmbauth --disablehesiod --update
Configure client. /etc/sysconfig/autofs
# Other common LDAP nameing
#
DEFAULT_MAP_OBJECT_CLASS="automountMap"
DEFAULT_ENTRY_OBJECT_CLASS="automount"
DEFAULT_MAP_ATTRIBUTE="ou"
DEFAULT_ENTRY_ATTRIBUTE="cn"
DEFAULT_VALUE_ATTRIBUTE="automountInformation"
#
*ldapsearch examples.
Search for user bjorklun.
ldapsearch -x uid=bjorklun
Search for specified field.
ldapsearch -x -b ou=People,ou=Nordic,ou=eng,dc=infineon,dc=com ifxGlobalUniqueId
Look for the auto.master structure.
ldapsearch -x -s subtree -b 'ou=auto.master,dc=halfface,dc=se' 'objectclass=automount'
Search ad for ldap information.
ldapsearch -LLL -x -h ad.ongame.com -W -p 3268 -b DC=ongame,DC=com -D 'ONGAME\username' '(&(objectClass=person)(cn=User Name))'
[[Category:Applications]]
[[Category:Applications]]
[[Category:Unix]]
[[Category:Unix]]

Latest revision as of 10:49, 3 May 2024

what does it mean

dap        Directory Access Protocol, Ldap ancestor
dit        Directory Information Tree
dsa        Directory System Agent is the element of an X.500 directory service that provides User Agents with access to a portion of the directory
dse        Directory System Entry. A DSE is a special entry within the LDAP directory that provides information about the directory itself and its configuration.
dua        Directory User Agent
rdn        parts of the DN are called Relative Distinguished Name (RDN) 
sasl       Simple Authentication and Security Layer

Install ldap server.

dnf install 389*

Configure ldap.

dscreate interactive

ldapsearch examples

Base64 decode. No line wrap.

ldapsearch -o ldif-wrap=no -u -H ldaps://www.halfface.se.se:636 -b 'DC=www,DC=halfface,DC=se' -D username -w _password_ "(&(objectClass=*)(anr=search_string" | perl -MMIME::Base64 -MEncode=decode -n -00 -e 's/\n //g;s/(?<=:: )(\S+)/decode("UTF-8",decode_base64($1))/eg;print' | less -ISRM
ldapsearch -o ldif-wrap=no -u -H ldaps://www.halfface.se.se:636 -b 'DC=www,DC=halfface,DC=se' -D username -w _password_ "(&(objectClass=*)(anr=search_string" | perl -pe"binmode(STDOUT,':utf8');" -MMIME::Base64 -MEncode=decode -n -00 -e 's/\n +//g;s/(?<=:: )(\S+)/decode("UTF-8",decode_base64($1))/eg;print' | strings

search for numbers higher than 42435.

ldapsearch -x -b ou=People,ou=Nordic,ou=eng,dc=infineon,dc=com "uidNumber>=42435"

search for next suitable gid. Look for good matching number. For some reason I get some low numbers in my test.

ldapsearch -LLL -l 5 -o nettimeout=5 -x -b "dc=example,dc=net" -h ldap.example.com  "uidNumber>=68000" uidNumber | grep uidNumber | awk '{print $2}' | sort -n | less

Wild card search.

ldapsearch -o ldif-wrap=no -H ldap://<url>:389 -x -D "uid=$USERNAME,cn=users,cn=accounts,dc=company,dc=se" -w $COMPANY_PASSWORD -b "dc=company,dc=se" -s sub -a always '(&(objectClass=*)(cn=*<string>*))'

matching

Match user belonging to one of the groups.

(|(memberOf=CN=%s,OU=Test_Users,DC=matthew,DC=com)(sAMAccountName=%s))

Match user belonging to both groups.

(&(memberOf=CN=%s,OU=Test_Users,DC=matthew,DC=com)(sAMAccountName=%s))

get root dse

root DSE (the top-level entry of the directory), supported LDAP versions, naming contexts, supported LDAP extensions, and other operational attributes. The root DSE, in particular, provides essential information about the LDAP server and the directory service it hosts, allowing LDAP clients to discover important details about the directory configuration and capabilities.

ldapsearch -o ldif-wrap=no -H ldaps://ldap.int.redbridge.se:636 -x -b "" -s base -a always "(objectClass=*)"

Get root dse using python

python3 -c 'from ldap3 import Server, Connection, ALL ; server = Server("ipa.demo1.freeipa.org",  get_info=ALL) ; conn = Connection(server, auto_bind=True) ; print(server.info) ;'

Get schemas

python3 -c 'from ldap3 import Server, Connection, ALL ; server = Server("ipa.demo1.freeipa.org",  get_info=ALL) ; conn = Connection(server, auto_bind=True) ; print(server.schema) ;'