NIST 800-44 Version 2 Guidelines on Securing Public Web Servers

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GUIDELINES ON SECURING PUBLIC WEB SERVERS Acknowledgements, <strong>Version</strong> 2 The authors, Wayne Jansen and Karen Scarfone of <strong>NIST</strong>, Miles Tracy of Federal Reserve Information Technology, and Theodore Winograd of Booz Allen Hamilton, wish to express their thanks to colleagues who reviewed drafts of this document. In particular, their appreciation goes to Tim Grance, Bill Burr, Patrick O’Reilly, Ray Perlner, and Murugiah Souppaya from <strong>NIST</strong>, and Jason Butterfield, Kwok Cheng, and Jonathan Holleran of Booz Allen Hamilton, for their research, technical support, and written contributions to this document. The authors also appreciate the efforts of those individuals, agencies, and other organizations that contributed input during the public comment period. Acknowledgements, Original <strong>Version</strong> The authors, Wayne Jansen from <strong>NIST</strong> and Miles Tracy and Mark McLarnon from Booz Allen Hamilton, wish to express their thanks to colleagues at both organizations who reviewed drafts of this document. In particular, their appreciation goes to John Wack, Murugiah Souppaya, and Tim Grance from <strong>NIST</strong>, and Steve Allison, Scott Bisker, Alexis Feringa, Kevin Kuhlkin, and Jonathan Holleran of Booz Allen Hamilton for their research, technical support, and written contributions to this document. The authors would also like to express their thanks to all those who contributed input during the public comment period and who assisted with our internal review process. iii
GUIDELINES ON SECURING PUBLIC WEB SERVERS Table of Contents Executive Summary..............................................................................................................ES-1 1. Introduction ......................................................................................................................1-1 1.1 Authority...................................................................................................................1-1 1.2 Purpose and Scope .................................................................................................1-1 1.3 Audience and Assumptions .....................................................................................1-2 1.4 Document Structure .................................................................................................1-2 2. Background ......................................................................................................................2-1 3. Planning and Managing Web Servers ............................................................................3-1 3.1 Installation and Deployment Planning......................................................................3-1 3.2 Security Management Staff......................................................................................3-3 3.2.1 Senior IT Management/Chief Information Officer .........................................3-4 3.2.2 Information Systems Security Program Managers .......................................3-4 3.2.3 Information Systems Security Officers .........................................................3-4 3.2.4 Web Server and Network Administrators .....................................................3-5 3.2.5 Web Application Developers ........................................................................3-5 3.3 Management Practices ............................................................................................3-6 3.4 System Security Plan...............................................................................................3-7 3.5 Human Resources Requirements............................................................................3-8 3.6 Alternative Web Server Platforms............................................................................3-9 3.6.1 Trusted Operating Systems..........................................................................3-9 3.6.2 Web Server Appliances ..............................................................................3-10 3.6.3 Pre-Hardened Operating Systems and Web Servers.................................3-11 3.6.4 Virtualized Platforms...................................................................................3-12 3.7 Checklist for Planning and Managing Web Servers...............................................3-13 4. Securing the Web Server Operating System.................................................................4-1 4.1 Installing and Configuring the Operating System.....................................................4-1 4.1.1 Patch and Upgrade Operating System.........................................................4-1 4.1.2 Remove or Disable Unnecessary Services and Applications.......................4-2 4.1.3 Configure Operating System User Authentication........................................4-4 4.1.4 Configure Resource Controls Appropriately .................................................4-6 4.1.5 Install and Configure Additional Security Controls .......................................4-6 4.2 Security Testing the Operating System ...................................................................4-7 4.3 Checklist for Securing the Web Server Operating System ......................................4-7 5. Securing the Web Server.................................................................................................5-1 5.1 Securely Installing the Web Server..........................................................................5-1 5.2 Configuring Access Controls....................................................................................5-2 5.2.1 Configuring the Permissions of the Web Server Application ........................5-3 5.2.2 Configuring Secure Web Content Directory .................................................5-4 5.2.3 Uniform Resource Identifiers and Cookies ...................................................5-5 5.2.4 Controlling Impact of Web “Bots” on Web Servers.......................................5-6 5.3 Checklist for Securing the Web Server ....................................................................5-9 iv
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NIST 800-44 Version 2 Guidelines on Securing Public Web Servers

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