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Enterasys NAC Design Guide 1-1

Overview

ThischapterprovidesanoverviewoftheEnterasysNetworkAccessControl(NAC)solution,

includingadescriptionofkeyNACfunctionsanddeploymentmodels.Italsointroducesthe

requiredandoptionalcomponentsoftheEnterasysNACsolution,andpresentsacomparison

betweentheinlineNACControllerforimplementationofinlinenetworkaccess

controlandthe

out‐of‐bandNACGatewayforimplementationofout‐of‐bandnetworkaccesscontrol.

NAC Solution Overview

EnterasysNACisacentralizednetworkaccesscontrolsolutionthatcombinesauthentication,

vulnerabilityassessment,andlocationservicestoauthorizenetworkaccessanddeterminethe

appropriatelevelofserviceforanend‐system.TheNACsolutionensuresthatonlyvalidusers

anddevicesconnectingattheproperlocation,attherighttime,

andwithappropriatesecurity

postures,aregrantedaccesstoyournetwork.Forend‐sys temswhicharenotcompliantwith

definedsecurityguidelines,theNACsolutionprovidesassistedremediation,allowingendusers

toperformself‐servicerepairstepsspecifictothedetectedcomplianceviolation.

Key Functionality

TheEnterasysNACsolutionsupportsthefivekeynetworkaccesscontrolfunctions:detection,

authentication,assessment,authorization,andremediation.Thesefivefunctionscanbedeployed

invariouscombinations,asdescribedinthefollowing sectionondeploymentmodels.

HereisadescriptionofthefivekeyNACfunctions:

Detection

Identifywhenandwhereadeviceconnectstothenetwork.

Authentication

Verifytheidentityoftheuserordeviceconnectingtothenetwork.EnterasysNACsupportsthe

“passthrough”authentication(proxyingtoabackendRADIUSserver)of802.1X,web‐based

(PWA),andMACauthenticationrequests,aswellaslocalMACauthentication.Thisprovides

accesscontrolforbothuser‐centricandmachine‐centric

end‐systemsintheenterprise

environment.

For information about... Refer to page...

NAC Solution Overview 1-1

NAC Solution Components 1-4

Summary 1-10

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 97 98

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Enterasys-networks 9034385 Uživatelský manuál Strana 11