Install Ubuntu Server Edition 8.10, boot it up and install OpenLDAP.
$ sudo apt-get install slapd ldap-utils
You can probably just accept the defaults if this is just for testing, therefore your domain will be dc=example,dc=com. In the install wizard it should ask you to setup your ldap admin user, this user's DN should be *cn=admin,dc=example,dc=com`.
Then you'll need to add two organizational units, one for People, one for Groups. Create the file myldap.ldif and place into it this:
If LDAP is running, shut it down with
Use ldapadd to add the LDIF file to our LDAP database:
$ ldapadd -x -D cn=admin,dc=example,dc=com -W -f myldap.ldif
It will ask you for your password that you set during the install.
Fire LDAP back up with
/etc/init.d/slapd start and then install Webmin:
$ sudo aptitude install perl libnet-ssleay-perl openssl \
libauthen-pam-perl libpam-runtime \
$ wget http://garr.dl.sourceforge.net/sourceforge/webadmin/webmin_1.441_all.deb
$ sudo dpkg -i webmin_1.441_all.deb
You can now navigate to your LDAP server's IP at port 10000 using URL
https://your-server-ip:10000/. Note you will be required to enter the root password for the computer at this login screen.
From here we need to configure Webmin to interact with our LDAP environment. Expand "System" and then select "LDAP Users and Groups." Click "Module Config" at the top of the page and find the following option and enter this custom data:
Base for users ou=People,dc=example,dc=com
Base for groups ou=Groups,dc=example,dc=com
Click save at the bottom. You will be returned to the previous screen where you can now add LDAP users and groups. This is now a functioning LDAP server. You can query it from the command using ldapsearch:
$ ldapsearch -x -h <your-server-ip> -b "dc=example,dc=com"
$ ldapsearch -x -h <your-server-ip> -b "dc=example,dc=com" '(uid=blah)'
I did most of this from memory so you'll have to forgive me if I missed a couple steps.