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Setting up an LDAP server with OpenLDAP
Install the OpenLDAP package slapd
Install the package with:
# apt-get install slapd
answering the prompts as follows:
- For the DNS domain name, enter your domain name.
?BRThis will be translated to an LDAP DN (for example, 'example.com' would become 'dc=example, dc=com'). This becomes what is known as your BaseDN, the root of your database.
For your organzation you can enter any string; this becomes associated the 'ou' field of your BaseDN record.
Next enter your LDAP administrator password twice. This will set the password for 'cn=admin, BaseDN and give 'cn=admin, BaseDN' write access to everything in your LDAP tree.
Accept the default of No to the question Allow LDAPv2 protocol
For querying the LDAP server utilities like ldapsearch are available. See the ["LDAPTools"] topic for more details.
For better performance do more indexing than the default.
Modify /etc/ldap/slapd.conf to contain the following:
index objectClass eq index cn pres,sub,eq index sn pres,sub,eq index uid pres,sub,eq index displayName pres,sub,eq index default sub index uidNumber eq index gidNumber eq index mail,givenName eq,subinitial index dc eq
After any new indexes have been defined or other major database changes have been made (e.g. slapadd was used) it is best to recreate the indexes. Note that you should stop slapd before recreating the indexes and should fix the permissions afterward.
# /etc/init.d/slapd stop # slapindex # chown -R openldap:openldap /var/lib/ldap # /etc/init.d/slapd start
Configuring 'chsh' and 'chfn' to work with LDAP
Edit '/etc/ldap/slapd.conf' to allow access for users to update their loginShell and gecos entries by adding the following before the 'access to *' entry:
access to attrs=loginShell,gecos by dn="cn=admin,dc=example,dc=com" write by self write by * read
For SAMBA LDAP support
For Samba LDAP, slapd needs the Samba schema. The Debian package seems to have a samba.schema file which is old and out of date, and a samba.schema.gz file which is actually the correct one. Do the following (as root):
# cd /usr/share/doc/samba-doc/examples/LDAP # gunzip samba.schema.gz # cp samba.schema /etc/ldap/schema/
Now add the following line to /etc/ldap/slapd.conf after the other includes:
And restart slapd:
# /etc/init.d/slapd restart
Access controls for subtree-specific LDAP Admins
If you choose to use LDAP for many functions, such as having a single server for DNS, Authentication, and networking flat file database replacement, you may wish to have LDAP administrative users for each subtree in addition to the global admin (dn="cn=admin, dc=example, dc=com). The following example is useful when using a separate authentication tree which includes Samba.
# The manager dn has full write access to the auth subtree # Everyone else has read access to not otherwise protected fields and entries access to dn.sub="ou=auth,dc=example,dc=com" by dn="cn=Manager,ou=auth,dc=example,dc=com" write by * read