Existing Network Environment | HP Access Control Client Software

Addendum to the ProCurve Access Control Security Design Guide

Updating the Access Control Design Process

Choose the Endpoint Integrity Solution

The ProCurve Access Control Solution supports two options for endpoint integrity (that is, controlling network access based on an endpoint’s compli- ance with security policies):

■ProCurve NAC 800—a security appliance

■Microsoft Network Access Protection (NAP)—a framework distrib- uted across several servers running Windows Server 2008

With both options, the device that performs endpoint integrity testing can also provide user authentication and authorization. In addition, remember that endpoint integrity tests are only the first step; ProCurve IDM helps you to create policies to control access based on the results of the tests. IDM supports either the NAC 800 or NAP, giving you to flexibility to choose the option that is best for your environment.

As you weigh your options, consider these factors:

■Existing network environment

■Vulnerability to risks and risk tolerance

■Management resources

■Interoperability requirements

Existing Network Environment

Consider the endpoints in your environment:

■Do you have Mac endpoints?

■Do you have legacy Windows endpoints?

NAP relies on the NAP Agent and other components that are supported only by endpoints that run Windows XP SP3 or Windows Vista. Therefore, NAP is suitable for organizations that have up-to-date and homogeneous Windows environments. The NAC 800, on the other hand, operates in mixed environ- ments, testing Windows 2000, Windows XP, Windows Vista, and Macintosh endpoints.

In addition, NAP is distributed across several Windows Server 2008 services. For example, NAP may require not only a NAP Health Policy Server (NPS) but also a Health Registration Authority (HRA). Or, if you are using the DHCP deployment option, your company’s DHCP server must also run Windows Server 2008. If you do not want to upgrade your servers at this time, the NAC 800 could be a better solution.

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HP Access Control Client Software manual Choose the Endpoint Integrity Solution, Existing Network Environment

Contents

ProCurve Solutions Page ProCurve Access Control Security Applicable ProCurve Products Contents Customer Needs Assessment Evaluate the Existing Network Environment Designing Access Controls Endpoint Capabilities and Administrative Control Page Appendix a Glossary Index Page Page Page Contents Access Control Concepts Access Control Concepts Introduction to Access Control Network Access Control Access Control Concepts AAA Network Access Control Technologies Authentication Authorization T e NAS ID Accounting Policy Enforcement Point PEP Network Access Control ArchitectureEndpoint Policy Decision Point PDP Access Control Concepts Policy Repository Network Access Control Architecture Network Access Control Process MAC-Auth Authentication-Based Network Access Control Methods Introduce security vulnerablities MAC-Auth Process Web-Auth Web-Auth Process 802.1X 802.1X Process MAC-Auth-None Authentication ProtocolsAuthentication Requirements PAP EAP MS-CHAPv2 Access Control Concepts Access Control Concepts Radius NAS ID T e Wireless Authentication802.11 Dynamic WEP Static Wired Equivalent Privacy WEP WPA/WPA2 VLANs Access Control Rights-Dynamic Settings Devices ACLs Endpoint Integrity Policies Endpoint Integrity Security Settings Pre-connect and Post-connect TestingSoftware Operating System Testing Methods Access Control Concepts Endpoint Requirements for Integrity Checking WMI Quarantine Methods Endpoint Integrity Posture User’s assignment and places him or her in a quarantine Vlan T e ProCurve NAC NAC 800 as an Endpoint Integrity Only Solution Process for 802.1X Quarantining Endpoint Integrity Only. 802.1X Deployment With each other Dhcp Deployment T e IP address = 192.168.8.1/24 IP address = 192.168.9.1/24 Inline Deployment Method NAC 800 as a RADIUS-Only Solution NAC 800 as Both a Radius Server and an Endpoint Integrity Solution Access Control Concepts User Authenticates and Is Placed in the Test Vlan Access Control Concepts User Re-authenticates and Is Placed in the Appropriate Vlan Wlan ProCurve IDM IAS, and the IDM agent on the same Windows Server Radius Process with IDM Customer Needs Assessment Customer Needs Assessment Overview Customer Needs Assessment Employees Types of Users Guests Temporary Employees Network Skills Network Users Recording Information about Users Types of Connections Wired ConnectionsWireless Connections Recording the Types of Connections Available to Users Group Permitted Connections Access Times Network ResourcesRemote Connections Access Control Zones Wireless and Wired Zones Access Control Zones Customer Needs Assessment Determine Risk Tolerance Regulations Federal Information Security Management Act Quantify Your Company’s Risk Tolerance Regulatory Compliance Attack Vectors Vulnerability to AttacksExternal Attacks Internal Attacks Types of Attacks Malware Viruses and Worms Customer Needs Assessment Customer Needs Assessment Edge Devices Evaluate the Existing Network EnvironmentSize Switch Vendor Firmware Location Recording Information about Network SwitchesPort Mirroring Model Number Version Supported Monitoring Spanning AP as a Supplicant Recording Information about APs EndpointsWorkstations and Laptops Customer Needs Assessment Recording Information about Workstations and Laptops Other EndpointsLaptop or Quantity User Operating Applications Workstation System Network Recording Information about Other Endpoints Directory ServiceRadius Servers Dchp Servers Subnets and VLANsRouting Information Sample Network Diagram Network Diagram Browser Security Policy-Windows Determine Your Endpoint Integrity Requirements Customer Needs Assessment Zone Default Setting Select Security Settings for Your CompanyDefault Settings for Internet Explorer Zones Operating System-Windows Security Settings-OSSecurity Settings-Windows Software-Windows Control over Network Resources Human Factor Users’ Cooperation IT Department Workload Customer Needs Assessment Customer Needs Assessment Designing Access Controls Designing Access Controls Endpoint Capabilities and Administrative Control Select an EAP Method for 802.1X 106 Comprehensive Security Policy Components Designing Access Controls Example Network Process of Designing Access Control Security Diagram of the PCU Campus Designing Access Controls PCU Campus Zones Network Infrastructure Divided into Access Zones Advantages and Disadvantages of Access Control Methods Choose the Access Control Methods High effort to Endpoints that accessHigh Security Zone Private Public Network Access Zones SecuritySecurity Concerns by Zone Wired Zone Security Concerns WEP Wireless Zone Security Concerns WPA/WPA2 Tkip CCMP-AES Wireless Security Web-Auth None by default Do your endpoints have 802.1X supplicants? Vulnerability and Risk Tolerance Technical Knowledge Characteristics Selecting an Access Control Method Based on Security NeededUser Type and Sophistication Example MAC-Auth Web-Auth 802.1X Access Control Method by User Sophistication Level Access Control Method by User Type and Sophistication Administrative Workload Endpoint Compatibility of Access Control Methods Access Control Method by Administrative Workload Hardware Type of Interface Operating System 10. Configuration of PCU’s Endpoints 11. Access Control Method by Endpoint Capabilities Administrative Control over Endpoints Description 12. Administrative Control Levels13. Access Control Method by Administrative Control Level Network Infrastructure Devices 14. Authentication Method by Administrative ControlSwitch Series MAC-Auth Web-Auth 802.1X ProCurve Product Software Version MAC-Auth Web-Auth 802.1X New capabilities for these wireless products17. Access Control Method by Existing Infrastructure Network Infrastructure Devices as 802.1X Supplicants Bringing All of the Factors Together ProCurve Switches 802.1X Supplicant Them 19. Access Control Methods by Feasibility Factor Weight Private Wired Public Wired 20. Preliminary Decisions for the Access Control Method 21. Preliminary Decisions for the Access Control Method Zone Access Control Method Make Decisions about Remote Access VPN22. Access Control Methods for Each Zone Disadvantages Mitigating Factors Decide Whether to Grant Remote Access23. Disadvantages of Remote Access Advantages Explanation 24. Advantages of Remote AccessSelect VPN Options 25. Options for VPN Protocols DSA Vulnerability and Risk Assessment 26. Selecting VPN Options Based on Security Needs They have? Router or firewall Administrative Workload and IT Budget Designing Access Controls Native Capabilities With VPN Client 29. Endpoint Compatibility for Remote Access 30. Selecting VPN Options Based on Endpoint Existing Network Infrastructure Bringing All Factors Together 32. Preliminary Decisions for VPN Options 33. PCU’s Preliminary Decisions for VPN Options Choose the Endpoint Integrity Deployment Method Access Control Method MAC-Auth Vulnerability to Risks and Risk Tolerance 35. Deployment Method by Access Control Method Designing Access Controls Public Wireless Remote Factor Private Wired Public Wired36. Security Level of Deployment Methods 37. Deployment Method by Security 38. Deployment Method by Existing Network Infrastructure WirelessConnection Type 39. Deployment Method by Connection Type Wireless Connection type InlineBringing the Factors Together Zone Deployment Method Factor Weight Private Wired Public Wired Remote Wireless42. Deployment Method by Zone Testing Method Advantages Disadvantages Choose Endpoint Integrity Testing Methods43. Summary of Testing Methods NAC EI Agent Requirements for Testing Methods InstallShield Wizard for the NAC EI Agent ActiveX Advantages and Disadvantages of NAC Agent TestingRequirements for ActiveX Testing Agentless Advantages and Disadvantages of ActiveX Testing Advantages and Disadvantages of Agentless Testing Deciding Which Testing Methods to EnableRequirements for Agentless Testing Transparent Testing Designing Access Controls Testing methods Testing with User Interaction Designing Access Controls Administrative Control over Endpoints Factors to Consider for Testing Methods 45. Testing Method by Administrative Control 44. Testing Method by Control over EndpointsFactor Public Wired Private Wired Private Wireless Remote 46. Testing Methods by Post-Connect Testing Post-Connect Testing User Sophistication 47. Testing Method by Post-Connect Testing Private Remote Wireless 48. Testing Method by User Sophistication49. Testing Methods for User Sophistication Agentless ActiveX NAC IE Agent Administrative Workload50. Testing Methods by Administrative Workload Network Overhead 51. Testing Methods for Administrative Workload 53. Preliminary Decisions for Testing Methods 52. Testing Method by Network OverheadFactor Public Wired Bringing All of the Factors Together 54. Preliminary Decisions for Testing Method Choose Radius Servers Network Authentication Architecture Choose Which Devices Will Play the Role of PDP Radius Servers in a Network Without Endpoint Integrity 56. Integrated Server Combination 55. General Combination57. Integrated Server/Proxy Combination 58. Turnkey Server 61. Alternate Integrated Server/Proxy Combination 60. Fully Integrated CombinationPEPs with Built-in PDPs PEPs with Built-in PDPs and Policy/Credential Repositories Users Combination Wired Per LAN Wireless Per LAN Total WAN 65. Access Control Component Combinations 64. Scalability of Access Control Component CombinationsMost Scalable Least Scalable Choose an Access Control Architecture Designing Access Controls 67. Radius Server Locations Centralizing Policies 68. Radius Server Locations Eliminating Inter-Site Traffic 69. Radius Server Locations Reducing Inter-Site Traffic 70. Radius Server Locations for PCU Determine the Number of Radius Servers Choose Your Radius Servers and Finalize the Plan Radius Server Decision Tree Designing Access Controls Does your organization already use IAS for other functions? IAS as the Radius Server NAC 800 as the Radius Server 73. Turnkey Server Combination for the NAC 71. General Combination for the NAC72. Integrated Server/Proxy for the NAC Wireless Edge Services Module Database Designing Access Controls Determine If You Need IDM Add ProCurve IDMIDM Overview Design Parameters for a Network with IDM Add Users Create Access Policy Groups Select an EAP Method for 10. EAP Method Decision Flowchart Designing Access Controls Supplicant 75. EAP Methods Supported by 802.1X Supplicants Server 76. EAP Methods Supported by Radius ServersEAP-TNC EAP-LEAP Not Designing Access Controls User Groups and Policies Finalize Security Policies77. Final Security Policy by Zone 78. Example Security Policy by Zone Access Group Policies with IDM Access Profile 79. Access ProfilesAccess Profiles 80. Dynamic VLANs 81. Dynamic VLANs for PCU 83. Resources 82. Resources by Entire VlanResource Vlan ID Subnet Address Resource IP Address Protocol 85. PCU Resources 84. PCU Resources by Vlan Access Profile Resources 86. Resources Allowed in Access Profiles Access Profile Resource 87. Resources Allowed in PCU Access Profiles Faculty Web servers, white pages Library catalog and printer Resources Rate Limit QoS 88. Resources Allowed in Access Profiles 90. Sample Access Policy Group Rules for PCU 89. Access Policy Group RulesAccess Policy Inputs Group Location Time System Outputs-Access Profile Access Policies without IDM Attribute Explanation Value for My Policy 91. Radius Attributes in Access Requests Attribute Policy 1-Setting Policy 2-Setting 92. Authentication Protocols for My Policies93. Dynamic Settings for My Policies Design NAC Policy Groups Create the NAC Policies Design NAC Policies 95. Tests for Minimal Endpoint Integrity 94. Tests for Minimal Endpoint Integrity Anti-Virus Anti-Spyware Personal Firewalls Mac Firewall 96. Tests for Medium Endpoint Integrity Browser? Enter the required versions in Table 97. Web Browser Tests Test Settings Mozilla Firefox 99. Other Tests for Hotfixes 98. Macro Security TestsMicrosoft Excel Microsoft Outlook Windows Media Mac QuickTime IIS Options Your selection 100. Windows Automatic Updates101. Tests for Applications 103. Tests for Shared Connections 102. Tests for Services104. Tests on Mac Airport Windows Bridge Network Connection Mac Internet Sharing Specified as allowed 105. Test for Windows Startup Registry Entries Lay Out the NetworkCore Resources T e Public Wired Zone Access Zones for Endpoints Vlan Assignment and Other Dynamic Settings. You can set up 133 106. Public Wired Zone Policies 108. Public Wireless Zone Policies Public Wireless Zone Designing Access Controls Product Software Version Radios Modes WLANs 109. Capabilities of ProCurve Wireless Products Version Methods 802.1X Software AuthenticationEAP Method for 112. ProCurve Products That Support PoE 111. PoE Requirements on ProCurve RPs and APs Lay Out the Network 113. Private Wired Zone Policies Private Wired Zone Might otherwise be ignored MS-CHAPv2 Private Wireless Zone115. Private Wireless Zone Policies Remote Zone Designing Access Controls Number Module VPN Protocol Maximum EncryptionTunnels 3DES Adjacent Zones Combining Access Control Zone DesignsOverlapping Zones 117. VPN Capabilities of the ProCurve VPN Client Designing Adjacent and Overlapping Zones Integrating all Parts of the Network Design Adding Access Control to an Existing Network Migrating from One Solution to Another 150 ProCurve Elite Partners Services and Support Other Resources Implementation Elements Solution Elements of Each Access Control Solution Other Resources Numeric Appendix a Glossary See also Dhcp deployment method and inline deployment method Appendix a Glossary Access point See AP Agent See NAC EI agent Appendix a Glossary Appendix a Glossary Appendix a Glossary Digital certificate See certificate EI See endpoint integrity Enforcement See ES. server Extensible See EAP Authentication Protocol GTC See EAP-GTC Inline quarantine method Appendix a Glossary Mirroring, remote See remote mirroring Lightweight See LDAP. directory access ProtocolManagement See MS. server Appendix a Glossary Appendix a Glossary PoE Peer-to-peerPermanent agent Public key See PKI. infrastructure Posture See integrity posturePre-shared key See PSK Radio port See RP Remote procedure See RPC. call Appendix a Glossary Appendix a Glossary Appendix a Glossary Appendix a Glossary Html Appendix a Glossary Appendix a Glossary Index See DNS EAP … 1-21, 1-25, 1-53 EAP GTC … See Imsi OS-X See SOX security policies TLS See WEP Contents Contents Overview ProCurve Access Control Solution Enhancements to the ProCurve Access Control Solution SMB Signing Deep Check TestingProCurve NAC Support for Rdac Post-Connect NAC TestingIntegration with Microsoft SMS Dhcp Plug-in Deployment Better synchronization with Microsoft Active Directory Identity Driven Manager ProCurve Access Control Solution NAP Components Microsoft NAP NAP enforcement point NAP client NAP health policy server NPS Active Directory domain serviceHealth requirement servers Restricted network NAP Enforcement Clients ECs NAP Client ArchitectureSystem Health Agents SHAs NAP Agent Figure A-4. Client-Side NAP Architecture NAP Server Architecture NAP Enforcement Point NAP Enforcement PointTable A-2. NAP ECs and Corresponding NAP Enforcement Points IPsec Network Access MethodsHealth Requirement Servers Figure A-5. IPsec-Protected and Unprotected Communications Figure A-6. HRA Network Access Dhcp 802.1X Authentication VPN Access Figure A-9. Ieee 802.1X Network Access Remediation and Health Requirement Servers Updating the Access Control Design Process Existing Network Environment Choose the Endpoint Integrity Solution Existing Network Environment Option Vulnerability to Risks and Risk Tolerance Risk Tolerance Management Resources Interoperability Requirements Interoperability Option Requirements Factor Weight SelectionBringing the Factors Together Choose the Endpoint Integrity Deployment Method Updating the Access Control Design Process Updating the Access Control Design Process