Enterasys Networks 9034385 manual NAC Configuration

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Procedures for Out-of-Band and Inline NAC

Figure 5-2 NAC Configuration

Authentication

The Authentication settings define how RADIUS requests are handled for authenticating end‐ systems (this does not apply to Layer 3 NAC Controllers.) This includes identifying whether MAC authentication requests are proxied upstream or locally authorized, and whether Filter‐ID and Tunnel RADIUS attributes are added to RADIUS messages during the authentication process.

Assessment

The Assessment Configuration defines the following requirements for end‐system assessment:

•What assessment tests to run.

The Assessment Configuration determines what types of assessment tests are executed and what parameters are used. For example, you can specify a Nessus assessment utilizing a specific Nessus configuration file that determines end‐system compliance with the SANS Top 20 vulnerabilities. The same Nessus server can be used to assess Windows machines for Windows‐related vulnerabilities and also assess MAC OS‐based machines for MAC‐related vulnerabilities. In addition, you can specify Nessus as well as other assessment services to jointly determine the security posture of a connecting device.

•What resources to use to run the assessment.

The Assessment Configuration determines what assessment servers are used to perform the assessment. You can balance the assessment load between all your assessment servers, or you can select a specific assessment server pool to use. For example, assuming Nessus is chosen for assessment, end‐systems connecting to the network in the companyʹs headquarters can be assessed with the Nessus server deployed in the headquarters, while end‐systems in a branch office will be assessed with Nessus servers deployed in the branch office, conserving bandwidth utilization on the network.

5-4 Design Procedures

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Contents Enterasys Page Page Page Contents Design Planning Design ProceduresUse Scenarios Figures TablesPage Intended Audience Related DocumentsGetting Help Support@enterasys.comNAC Solution Overview AuthenticationKey Functionality DetectionAuthorization Deployment ModelsAssessment RemediationModel 1 End-system Detection and Tracking Model 2 End-System AuthorizationModel 3 End-System Authorization with Assessment NAC Solution Components NAC ApplianceNAC Gateway Appliance NAC Controller ApplianceNAC Controller is available in two models Appliance Comparison NAC Gateway NAC ControllerDisadvantage Advantage NetSight Management NetSight NAC ManagerAssessment Server SummaryRadius Server Summary Summary Overview Out-of-Band NAC Model 1 End-System Detection and TrackingImplementation End-System and User Tracking Features and ValueInline NAC Layer Model 2 End-System Authorization Required and Optional ComponentsInline NAC Location-Based Authorization Device-Based AuthorizationUser-Based Authorization MAC RegistrationComponent Requirements for Authorization Model 3 End-System Authorization with Assessment Inline NAC Extensive Security Posture Compliance Verification Diverse Security Posture Compliance Verification Component Requirements for Authorization with Assessment Implementation Self-Service Remediation Required and Optional Components Enterasys NAC Deployment Models Value Scenario 1 Intelligent Wired Access Edge Use ScenariosPolicy-Enabled Edge NAC FunctionsRFC 3580 Capable Edge VLAN=ProductionScenario 1 Implementation Scenario 2 Intelligent Wireless Access Edge Thin Wireless EdgeRemediation Web User Laptop Thick Wireless Edge Scenario 2 Implementation Scenario 3 Non-intelligent Access Edge Wired and Wireless Layer 2 Wired LAN Scenario 4 VPN Remote Access Scenario 3 ImplementationVPN Remote Access Enterasys Scenario 4 ImplementationUse Scenario Summaries Summary and Appliance Requirements VPN remote access Design Planning Identify the NAC Deployment ModelSurvey the Network Identify the Intelligent Edge of the NetworkNetwork with Intelligent Edge Evaluate Policy/VLAN and Authentication Configuration Case #1 No authentication method is deployed on the networkCase #2 Authentication methods are deployed on the network Overview of Supported Authentication MethodsSupport for Multiple End-System Connection Support of Multiple Authentication MethodsEnd-System Capabilities Authentication Support on Enterasys Devices Authentication ConsiderationsIdentify the Strategic Point for End-System Authorization Wired LAN Wireless LANThick Wireless Deployments Identify Network Connection MethodsSite-to-Site VPN Remote Access WANThin Wireless Deployments Remote Access VPN Identify Inline or Out-of-band NAC DeploymentSummary Procedures for Out-of-Band and Inline NAC Identify Required NetSight ApplicationsDefine Network Security Domains NAC Configurations Security DomainNAC Configuration Authorization NAC Configuration for a Security Domain Procedures for Out-of-Band and Inline NAC To the network Procedures for Out-of-Band and Inline NAC Procedures for Out-of-Band and Inline NAC Security Domain Configuration Guidelines for Assessment Identify Required MAC and User Overrides MAC OverridesMAC and User Override Configuration Procedures for Out-of-Band and Inline NAC Procedures for Out-of-Band and Inline NAC User Overrides Assessment Design Procedures Determine the Number of Assessment ServersIdentify Assessment Server Configuration Determine Assessment Server LocationOut-of-Band NAC Design Procedures Identify Network Authentication ConfigurationDetermine the Number of NAC Gateways NAC Gateway Redundancy Determine NAC Gateway Location Identify Backend Radius Server Interaction Determine End-System Mobility RestrictionsDefine NAC Access Policies Vlan ConfigurationPolicy Role Configuration Failsafe Policy and Accept Policy Configuration Assessment Policy and Quarantine Policy ConfigurationPolicy Role Configuration in NetSight Policy Manager Assessment PolicyService for the Assessing Role Quarantine PolicyUnregistered Policy Inline NAC Design ProceduresDetermine NAC Controller Location Inline NAC Design Procedures Determine the Number of NAC Controllers Layer 2 NAC Controller Redundancy Define Policy Configuration NAC Deployment With NetSight ASM Additional ConsiderationsNAC Deployment With an Intrusion Detection System IDS Additional Considerations Design Procedures