FreeIPA allows Linux administrators to centrally manage identity, authentication and access control aspects of Linux and UNIX systems by providing simple to install and use command line and web based managment tools.
FreeIPA is built on top of well known Open Source components and standard protocols with a very strong focus on ease of management and automation of installation and configuration tasks.
FreeIPA can seamlessly integrate into an Active Directory environment via cross-realm Kerberos trust or user synchronization.
FreeIPA:
The FreeIPA project provides unified installation and management tools for the following components:
Releases, announcements and other information can be found on the IPA server project page at http://www.freeipa.org/ .
The most up-to-date documentation can be found at http://freeipa.org/page/Documentation .
To get started quickly, start here: http://www.freeipa.org/page/Quick_Start_Guide
Please see the file called COPYING.