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What Does Clear SSL State Mean? - ItStillWorks

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Clearing the SSL state eliminates the problems of caching certificates since it wipes out the cache. Doing this shouldn't be necessary in day-to-day computing, ... HomeInternetWhatDoesClearSSLStateMean?BySteveLanderiJupiterimages/Pixland/GettyImagesTheSecureSocketsLayer/TransportLevelSecuritysystemthatunderpinssecureconnectionsontheWebdoesmorethanjustscrambleinformation.Italsocheckstheidentitiesofsitestowhichyousecurelyconnecttoensurethattheyarewhoyousaytheyare.Thoseproofsofidentities,calledcertificates,getstoredinyourcomputer'smemoryuntilyourestartitorcleartheSSLstate.SSLCertificatesWhenyourWebbrowserinitiatesanSSLconnection,itaskstheserverontheotherendforacopyofitsdigitalcertificate.ThecertificatetellsyourWebbrowserhowtoencryptdataforthatserverandalsowhotheothercomputeris.Yourbrowserthenverifiesthatcomputer'sidentifybycheckingitscertificatewiththecompanythatissuedit.Onlyonceitfinishesthatprocess,called"SSLhandshake,"willitopenasecureconnection.CachingSSLCertificatesSettingupanSSLconnectiontakestime.Yourcomputerhastodownloadthecertificateandverifyit,thenusepowerfulpublickeyencryptiontechnologytoestablishhowitwilldoencryptedtransfersfortherestofthesession.Tosaveitselffromhavingtogothroughthisprocesseverytimeitconnectstothatserver,yourcomputerstores,orcaches,thecertificatesuntilyoushutitdown.Thatway,ifitneedstoreconnect,it'salreadypartofthewaythere.IssuesWithCachingCachingSSLcertificatesisatradeoff,though.Thedatathatyoustoreonyourcomputercouldgetcorrupted,sothatwhenyougobacktoreconnecttothesite,youwouldhavethewrongcertificateinformationandtheSSLhandshakingprocesswon'twork.Inaddition,somethingcouldchangewiththatotherserver'scertificate,andyouwouldn'tknowaboutitsinceyouwouldstillbeworkingwithastoredversion.ClearingtheSSLStateClearingtheSSLstateeliminatestheproblemsofcachingcertificatessinceitwipesoutthecache.Doingthisshouldn'tbenecessaryinday-to-daycomputing,sinceresettingyourcomputeror,insomecases,closingyourbrowser,willalsoclearyourSSLstate.However,thisprocedurecanbeusefulifyoudon'trebootyourcomputerveryoftenorifyouareencounteringproblemswithSSLconnections.ReferencesLuxSci:HowDoesSecureSocketLayer(SSLorTLS)Work?MicrosoftSupport:InformationAbouttheClearSSLStateOptioninWindowsXPNorthernIllinoisUniversity:InternetExplorer9-BrowserConfiguration-SSLIssueWriterBioSteveLanderhasbeenawritersince1996,withexperienceinthefieldsoffinancialservices,realestateandtechnology.Hisworkhasappearedintradepublicationssuchasthe"MinnesotaRealEstateJournal"and"MinnesotaMulti-HousingAssociationAdvocate."LanderholdsaBachelorofArtsinpoliticalsciencefromColumbiaUniversity.×

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