IPsec,alsoknownastheinternetProtocol(),definesthearchitectureforsecurityservicesforIPnetworktrafficIPsecdescribestheframeworkforprovidingsecurityatheIPlayer,aswellasthesuiteofprotocolsdesignedtoprovidethatsecurity:through_()_andencryptionofIPnetworkpackets.IPeccanbeused10protectnetworkdata,forexample,bysettingupcircuitsusingIPsec(请作答此空),inwhichalldatabeingsentbetweentwoendpointsisencrypted,aswithaVirtual()Networkconnection;forencryptingapplicationlayerdata;andforprovidingsecurityforrouterssendingroutingdataacrossthepublicinternet.InternettrafficcanalsobesecuredfromhosttohostwithouttheuseofIPsec,forexamplebyencryptionatthe()layerwithHTTPSecure(TTPS)oranthetransportlayerwittheTransportLayerSecurity(TLS)protocol.
A.channel B.path C.tunneling D.route]正确答案C
