FreeIPA is an open-source integrated Identity and Authentication solution for Linux and Unix based systems. It provides centralized authentication by storing data about user, groups, hosts, and other objects. It provides an integrated identity management service for Linux, Mac, and Windows. FreeIPA is based on the 389 Directory Server, Kerberos, SSSD, Dogtag, NTP, and DNS. It provides a web-based interface to manage Linux users and clients in your realm from the central location.