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Something similar to NT domain controller in Linux?

E.g. two hosts with one shared authentication.

How to?

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closed as not constructive by Wesley, Murali Suriar, jscott, Greg Askew, Ward Apr 27 '12 at 23:51

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.

There's NIS.
There's LDAP (pam_ldap, nss-pam-ldapd - this can auth against AD too!).
There's various flavors of Kerberos (though I've always found setup annoying).
There's Samba (for authenticating to Windows/AD directly).
There's a bunch of other options.

Pick one, and google for a howto. There are plenty out there.

There's also doing some research before you ask a question (which is why I downvoted this question).

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Is Google broken??

LDAP is what you're after... on Linux I'll believe you'll use OpenLDAP. There is plenty of material available for setting this on a number of different distributions.

All the information you need is there, and in the documentation for the various different Linux distrbutions.

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Use Active Directory/LDAP for that. Basic google search for active directory integration with linux will shield lot of results. Here is a basic guide:

LDAP/NIS would also work.

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