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文档分类:资格/认证考试

CWSP Guide to Wireless Security.ppt


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CWSP Guide to Wireless Security.ppt
文档介绍:
heenterprisesecuritymodel2CWSPGuidetoWirelessSecurityWirelessSecuritySolutionsWEPsuffersfromseriousweakness“Band-aid”solutionsWEP2andDynamicWEPBettersolutionsIEEE802.11iWi-ess(WPA)Wi-ess2(WPA2)3CWSPGuidetoWirelessSecurityIEEE802.works:ime802.11iusestheAdvancedEncryptionStandard(AES)Designedtobeanencryptiontechniquethatissecurefromattacks4CWSPGuidetoWirelessSecurityIEEE802.11i(continued)5CWSPGuidetoWirelessSecurityIEEE802.11i(continued)plishedbytheIEEE802.1xstandardImplementsportsecurityBlocksalltrafficonaport-by-portbasisUntiltheclientisauthenticatedusingcredentialsstoredonanauthenticationserverKey-workIfauserroamsawayandlaterreturnsShedoesnotneedtore-enterallofthecredentials6CWSPGuidetoWirelessSecurityIEEE802.11i(continued)7CWSPGuidetoWirelessSecurityIEEE802.11i(continued)Pre-eauthenticatedtoanAPBeforemovingintorangeoftheAPDevicesendsapre-esspoints8CWSPGuidetoWirelessSecurityWi-ess(WPA)Subsetof802.11iandaddressesbothencryptionandauthenticationTemporalKeyIntegrityProtocol(TKIP)TKIPkeysareknownasper-packetkeysTKIPdynamicallygeneratesanewkeyforeachpacketthatiscreatedPreventcollisionsWhichwasoneoftheprimaryweaknessesofWEPAuthenticationservercanuse802.1xtoproduceauniquemasterkeyforthatusersession9CWSPGuidetoWirelessSecurityWi-ess(WPA)(continued)TKIPdistributesthekeytowirelessdevicesandAPSettingupanautomatedkeyhierarchyandmanagementsystemWPAreplacestheCyclicRedundancyCheck(CRC)withtheMessageIntegrityCheck(MIC)Designedtopreventanattackerfromcapturing,altering,andresendingdatapacketsProvidesastrongmathematicalfunctionClientsarede-ursOptionalfeature10CWSPGuidetoWirelessSecurity 内容来自淘豆网www.taodocs.com转载请标明出处.