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Oracle Linux 7 authentication to Active Directory

Introduction I've been curious from some time to see how Active Directory users could natively authenticate to Linux, or said in a different way, how to configure Linux to allow AD users to log in without the need to have those users in each and every Linux box manually. Although there are several different ways to accomplish this, I found that the easiest and less time consuming way to do it is with the use of Samba WinBind. Later I will show how to use Oracle Internet Directory (OID) to accomplish the same feat. Using an IdM solution (AD, OID) can help to reduce the time to deploy users, you can centrally manage access to linux servers from Active Directory Users and Computers (ADUC) app, and can allow administrative tasks thru sudo depending on the group the users belong to. For my Proof of Concept I created two virtual machines, one with Windows 2012 Server Essentials, and another one with Oracle Linux 7.1. In AD I created 1 group named osd-linux-oretail, and several tes
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