<div class="gmail_quote">On Sun, Aug 26, 2012 at 6:05 AM, KodaK <<a href="mailto:sakodak@gmail.com" target="_blank">sakodak@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> I've just been informed by my boss's boss's boss that, and I quote from his ridiculous email: "we cannot use anything other than MS AD for authentication" I've spent months of time and much effort rolling out IPA, consolidating authentication across our Linux and AIX machines. To paraphrase Babbage: I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a statement. Regardless, I need some help. I need some help with comparisons between FreeIPA and AD, and the problems and issues one might encounter when trying to authenticate Unix machines against AD. Anything that can show IPA being superior to AD for *nix authentication. Anything at all. We have a similar number of AIX and Linux servers. We have a week before we have a meeting to discuss this, and I'd like to be armed to the teeth, if at all possible. </blockquote></div> hi, you need to explain to upper management why using IPA your company will save money. They usually understand that sort of talk. Write a business case. In the documentation (both from RHEL and from <a href="http://freeipa.org">freeipa.org</a>) you will get plenty of useful info. Magnify the points where AD comes short for your user case (selinux, sudo, automounts, service credentials management - having used ktpass.exe I was amazed at how nice the keytab capabilities are from ipa-, hostgroups, ssh public key management, ..., the list goes on and on). Explain that *that* will not change and how much money it will cost your business (admin hours, security risks, missed compliance). Explain why the future is in the trust model in ipa v3. Explain that Windows admins are not expected to run a Windows network without AD, so why are Linux/AIX admins expected to run a network without a proper Linux/AIX identity management solution. I feel your pain and can understand why you are upset, but try not to take this all personally. In the end, it is not your network. Regards, Natxo