Enterasys RoamAbout 3000 Uživatelská příručka stáhnout pdf (Strana 189)

What’s Next?

RoamAbout Switch Manager User’s Guide 8-17

• Rogue—RadiosusecountermeasuresagainstdevicesclassifiedbyMSSasrogues,butdo

notusecountermeasuresagainstdevicesclassifiedbyMSSasinterferingdevices.

• Configured—Causesradiostoattackonlydevicesspecifiedintheattacklistonthe

RoamAboutSwitch(on‐demandcountermeasures).Whenthisoptionisused,devices

foundtoberogues

byothermeans,suchaspolicyviolationsorbydeterminingthatthe

deviceisprovidingconnectivitytothewirednetwork,arenotattacked.

13. Todisableactivescanningforroguedevices,deselectEnableActiveScan.

Whenactivescanisenabled,radiossendprobeanyrequests(proberequestswithanullSSID

name),

tosolicitproberesponsesfromotheraccesspoints.Radiosalsopassivelyscanby

listeningforbeaconsandproberesponses.Whenactivescanisdisabled,radiosperform

passivescanningonly.

14. ClickFinishtosavethechangesandclosethewizard.

Verifying Countermeasures Are Being Taken Against the Rogue

Toverifythatcountermeasuresarebeingtakenagainsttherogue:

1. ClickontheAlarmsoptioninthemainRASMtoolbar.

2. Selecttherogueinthealarmlist.Thealarmdetailspanelfortherogueshowscountermeasure

activity.

Ifcountermeasuresstart,stop,andstartagain, theroguemayhaveleftthearea,then

returned,

oranotherAPinthecoverageareamayhavetakenovercountermeasureactivitiesfromthe

lastAPtodetecttherogue.

What’s Next?

Afteryouhavemanagedanyexistingfaults,youcancontinuetomonitoryournetwork.

•Forinformationaboutmonitoringyournetwork,referto“ManagingandMonitoringYour

Network”onpage 7‐1.

Caution: Countermeasures affect wireless service on a radio. When an AP radio is

sending countermeasures, the radio is disabled for use by network traffic, until the radio

finishes sending the countermeasures.

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Enterasys RoamAbout 3000 Uživatelská příručka Strana 189