LDAP, or Lightweight Directory Access Protocol, is a protocol for managing related information from a centralized location through the use of a file and directory hierarchy. It functions in a similar way to a relational database in certain ways, and can be used to organize and store any kind of information. LDAP is commonly used for centralized authentication.
In this guide, we will cover how to install and configure an OpenLDAP server on an Ubuntu 12.04 VPS. We will populate it with some users and groups.