Enterasys Networks 9034385 manual Scenario 2 Intelligent Wireless Access Edge, Thin Wireless Edge

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Scenario 2: Intelligent Wireless Access Edge

intelligent edge on the network. The Matrix N‐series switch is capable of authenticating and authorizing multiple devices connected to a single port for a variety of network topologies, ranging from an IP phone cascaded with a PC on a single Matrix N‐series port, to a stack of non‐ intelligent edge switches uplinked to a single Matrix N‐series port where over 1000 end‐systems connect. In this configuration, the Matrix N‐series acts as the intelligent edge switch on the network, although not physically located at the access edge. Each individual end‐system is authenticated using 802.1X, web‐based, and/or MAC authentication and is subsequently authorized on the Matrix N‐series inter‐switch link to the access edge. By provisioning access to network resources on the Matrix N‐series using MUA, end‐system traffic destined to adjacent switches on the network can be securely contained with policy at the Matrix N‐series port.

Scenario 2: Intelligent Wireless Access Edge

In the intelligent wireless access edge use scenario, thick Access Points (APs) or wireless switches with thin APs provide authentication and authorization for connecting end‐systems.

For this use scenario, the NAC Gateway appliance is deployed for out‐of‐band network access, leveraging the intelligent wireless infrastructure devices as the authorization point for connecting end‐systems.

Thin Wireless Edge

In a thin wireless deployment, wireless switches tunnel wireless end‐system traffic to and from access points deployed on the network. Most thin wireless deployments are categorized under the intelligent wireless access edge use scenario because the wireless switches are capable of providing authentication (802.1x, web‐based, or MAC) and are also capable of being an authorization point either through dynamic VLAN assignment as specified in RFC 3580 or application of user‐based ACLs or policy.

The following figure illustrates how the NAC Gateway and the other Enterasys NAC components work together in a thin wireless deployment.

Enterasys NAC Design Guide 3-5

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Contents Enterasys Page Page Page Contents Use Scenarios Design ProceduresDesign Planning Tables FiguresPage Related Documents Intended AudienceSupport@enterasys.com Getting HelpDetection NAC Solution OverviewAuthentication Key FunctionalityRemediation AuthorizationDeployment Models AssessmentModel 3 End-System Authorization with Assessment Model 2 End-System AuthorizationModel 1 End-system Detection and Tracking NAC Appliance NAC Solution ComponentsNAC Controller Appliance NAC Gateway ApplianceNAC Controller is available in two models NAC Gateway NAC Controller Appliance ComparisonDisadvantage Advantage NetSight NAC Manager NetSight ManagementRadius Server SummaryAssessment Server Summary Summary Overview Implementation Model 1 End-System Detection and TrackingOut-of-Band NAC Inline NAC Layer Features and ValueEnd-System and User Tracking Required and Optional Components Model 2 End-System AuthorizationInline NAC Device-Based Authorization Location-Based AuthorizationMAC Registration User-Based AuthorizationComponent 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 Use Scenarios Scenario 1 Intelligent Wired Access Edge NAC Functions Policy-Enabled EdgeVLAN=Production RFC 3580 Capable EdgeScenario 1 Implementation Thin Wireless Edge Scenario 2 Intelligent Wireless Access EdgeRemediation Web User Laptop Thick Wireless Edge Scenario 2 Implementation Scenario 3 Non-intelligent Access Edge Wired and Wireless Layer 2 Wired LAN Scenario 3 Implementation Scenario 4 VPN Remote AccessScenario 4 Implementation VPN Remote Access EnterasysUse Scenario Summaries Summary and Appliance Requirements VPN remote access Identify the NAC Deployment Model Design PlanningIdentify the Intelligent Edge of the Network Survey the NetworkNetwork with Intelligent Edge Case #1 No authentication method is deployed on the network Evaluate Policy/VLAN and Authentication ConfigurationOverview of Supported Authentication Methods Case #2 Authentication methods are deployed on the networkEnd-System Capabilities Support of Multiple Authentication MethodsSupport for Multiple End-System Connection Authentication Considerations Authentication Support on Enterasys DevicesIdentify the Strategic Point for End-System Authorization Identify Network Connection Methods Wired LANWireless LAN Thick Wireless DeploymentsThin Wireless Deployments Remote Access WANSite-to-Site VPN Identify Inline or Out-of-band NAC Deployment Remote Access VPNSummary Identify Required NetSight Applications Procedures for Out-of-Band and Inline NACDefine Network Security Domains Security Domain NAC ConfigurationsNAC 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 MAC Overrides Identify Required MAC and User OverridesMAC and User Override Configuration Procedures for Out-of-Band and Inline NAC Procedures for Out-of-Band and Inline NAC User Overrides Determine the Number of Assessment Servers Assessment Design ProceduresDetermine Assessment Server Location Identify Assessment Server ConfigurationIdentify Network Authentication Configuration Out-of-Band NAC Design ProceduresDetermine the Number of NAC Gateways NAC Gateway Redundancy Determine NAC Gateway Location Determine End-System Mobility Restrictions Identify Backend Radius Server InteractionPolicy Role Configuration Vlan ConfigurationDefine NAC Access Policies Assessment Policy and Quarantine Policy Configuration Failsafe Policy and Accept Policy ConfigurationAssessment Policy Policy Role Configuration in NetSight Policy ManagerQuarantine Policy Service for the Assessing RoleDetermine NAC Controller Location Inline NAC Design ProceduresUnregistered Policy Inline NAC Design Procedures Determine the Number of NAC Controllers Layer 2 NAC Controller Redundancy Define Policy Configuration NAC Deployment With an Intrusion Detection System IDS Additional ConsiderationsNAC Deployment With NetSight ASM Additional Considerations Design Procedures