FreeIPA is an integrated security information management solution combining Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS, Dogtag (Certificate System). It consists of a web interface and command-line administration tools.

FreeIPA is an integrated Identity and Authentication solution for Linux/UNIX networked environments. A FreeIPA server provides centralized authentication, authorization and account information by storing data about user, groups, hosts and other objects necessary to manage the security aspects of a network of computers.
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.

Arch Wiki has a page about MediaWiki that provides more details, but lacks paste-able code to quickly get things up and running. So the focus here is on just the basic recipe for a quick installation. Note the following commands should be run as root user (to get into root run su, for example).

spammers wishing to promote products or web sites. MediaWiki offers a number of features designed to combat vandalism in general (see); on this page we deal specifically with wiki spam.