Negus, Christopher; Foster-Johnson, Eric (2011). Fedora Bible 2011 Edition: Featuring Fedora Linux 14. Indianapolis: John Wiley & Sons. ISBN9781118085738. https://books.google.com/books?id=VWc9dmHLVssC2016年9月1日閲覧. "The "IPA" part of FreeIPA stands for identity (identifying and authenticating users and machines), policy (settings for access control of applications and machines), and audit (methods for collecting and auditing security events, logs, and user activities)."