Integrating Red Hat Enterprise Linux 6 with Active Directory

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Integrating Red Hat Enterprise Linux 6 with Active Directory Integrating Red Hat Enterprise Linux 6 with Active Directory Mark Heslin Principal Software Engineer Version 1.2 June 2012 1801 Varsity Drive™ Raleigh NC 27606-2072 USA Phone: +1 919 754 3700 Phone: 888 733 4281 Fax: +1 919 754 3701 PO Box 13588 Research Triangle Park NC 27709 USA Linux is a registered trademark of Linus Torvalds. Red Hat, Red Hat Enterprise Linux and the Red Hat "Shadowman" logo are registered trademarks of Red Hat, Inc. in the United States and other countries. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. UNIX is a registered trademark of The Open Group. Intel, the Intel logo and Xeon are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. All other trademarks referenced herein are the property of their respective owners. © 2012 by Red Hat, Inc. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, V1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The information contained herein is subject to change without notice. Red Hat, Inc. shall not be liable for technical or editorial errors or omissions contained herein. Distribution of modified versions of this document is prohibited without the explicit permission of Red Hat Inc. Distribution of this work or derivative of this work in any standard (paper) book form for commercial purposes is prohibited unless prior permission is obtained from Red Hat Inc. The GPG fingerprint of the [email protected] key is: CA 20 86 86 2B D6 9D FC 65 F6 EC C4 21 91 80 CD DB 42 A6 0E Send feedback to [email protected] www.redhat.com ii [email protected] Table of Contents 1 Executive Summary......................................................................................... 1 2 Component Overview....................................................................................... 2 2.1 Red Hat Enterprise Linux 6............................................................................................... 2 2.2 Windows Server 2008 R2.................................................................................................. 3 2.3 Active Directory Domain Services (AD DS)...................................................................... 3 2.4 Identity Management (IdM) in Red Hat Enterprise Linux (RHEL)..................................... 3 2.5 Samba............................................................................................................................... 4 2.6 SMB/CIFS.......................................................................................................................... 4 2.7 Winbind.............................................................................................................................. 4 2.8 Kerberos............................................................................................................................ 6 2.9 Lightweight Directory Access Protocol (LDAP)................................................................. 6 2.10 System Security Services Daemon (SSSD).................................................................... 7 2.11 Domain Name System (DNS)......................................................................................... 7 2.12 Network Time Protocol (NTP)......................................................................................... 7 2.13 Name Service Switch (NSS)........................................................................................... 7 3 Considerations................................................................................................. 8 3.1 Non-technical Considerations........................................................................................... 8 3.1.1 Organizational Alignment............................................................................................. 8 3.1.2 Expertise Levels........................................................................................................... 8 3.1.3 Scope/Complexity........................................................................................................ 9 3.1.4 Prototype ..................................................................................................................... 9 3.1.5 Project Deployment..................................................................................................... 9 3.2 Technical Considerations.................................................................................................. 9 3.2.1 File Sharing.................................................................................................................. 9 3.2.2 Login Access................................................................................................................ 9 3.2.3 Active Directory ID Attributes..................................................................................... 10 3.2.4 Enumeration............................................................................................................... 10 3.2.5 LDAP Referrals.......................................................................................................... 10 3.2.6 Winbind Backends..................................................................................................... 11 3.2.7 Services Integration................................................................................................... 13 3.2.8 Log Files.................................................................................................................... 13 [email protected] iii www.redhat.com 4 Configurations................................................................................................ 14 4.1 Overview.......................................................................................................................... 14 4.2 Configuration Feature Comparisons............................................................................... 15 4.3 Selecting a Configuration................................................................................................ 18 5 Deployment Prerequisites.............................................................................. 19 5.1 Deploy Windows 2008 Server R2................................................................................... 19 5.2 Configure Active Directory Domain Services.................................................................. 19 5.3 Deploy Red Hat Enterprise Linux 6................................................................................. 20 5.4 Configure SELinux Security Parameters......................................................................... 20 5.5 Install/Configure Samba.................................................................................................. 21 5.6 Synchronize Time Services............................................................................................. 21 5.7 Configure DNS................................................................................................................ 22 5.8 Install/Configure Kerberos Client.................................................................................... 23 5.9 Install oddjob-mkhomedir................................................................................................ 24 6 Recommended Configurations....................................................................... 25 6.1 Configuration 1 - Samba/Winbind (idmap_rid)................................................................ 26 6.1.1 Configuration Summary............................................................................................. 26 6.1.2 Systems Overview..................................................................................................... 27 6.1.3 Authentication and ID Components........................................................................... 27 6.1.4 Integration Tasks....................................................................................................... 28 6.1.5 Verification of Services.............................................................................................. 38 6.2 Configuration 2 – Samba/Winbind (idmap_ad)............................................................... 41 6.2.1 Configuration Summary............................................................................................. 41 6.2.2 Systems Overview..................................................................................................... 42 6.2.3 Authentication and ID Components........................................................................... 42 6.2.4 Integration Tasks....................................................................................................... 43 6.2.5 Verification of Services.............................................................................................. 53 6.3 Configuration 3 – SSSD/Kerberos/LDAP........................................................................ 56 6.3.1 Configuration Summary............................................................................................. 56 6.3.2 Systems Overview..................................................................................................... 57 6.3.3 Authentication and ID Components........................................................................... 57 6.3.4 Integration Tasks......................................................................................................
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