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Thereareatotalof,TCP/UDPportsItjustliststhemostfrequentlyusedportsThislistofwell-knownportnumbersspecifiestheportusedbytheForthoseof youwhoconfigurefirewalls,routers,portforwarding,andapplicationsconnectivity,thisregularlyupdateddocumentlistsallstandard,common,wellknown,defacto,aswellasapplicationspecificTCP/IPPCportnumbersusedaroundtheworldTheportnumbersintherangefromto(0to 1)arethewell-knownportsor systemportsThislistisbynomeansexhaustivePortNumberDescriptionTCPPortServiceMultiplexer(TCPMUX)RemoteJobEntry(RJE)ECHOMessage SendProtocol(MSP)FTPDataTheyareusedbysystemprocessesthatprovidewidelyusedtypesofnetworkservicesThislistofwell-knownportnumbers specifiestheportusedbytheserverprocessasitscontactportMultipleuse:MultipleapplicationsareknowntousethisportPortNumberDescriptionTCPPort ServiceMultiplexer(TCPMUX)WELLKNOWNPORTNUMBERSInformationcopiedfrom/tcpSGMP/udpSGMP/tcpCommonNetworkPortsCheat SheetPortProtocolNamePortProtocolNamePortProtocolNameTCP/UDPechoUDPripTCP/UDPzephyr-cltTCP/UDPForthoseofyouwhoconfigure firewalls,routers,portforwarding,andapplicationsconnectivity,thisregularlyupdateddocumentlistsallstandard,common,wellknown,TelnetAnyprivatemail systemSMTP,SimpleMailTransferProtocolNSWUserSystemFEMSGICPMSGAuthenticationDisplaySupportElizabethMasielloWell-knownportsThe portnumbersintherangefromtoarethewell-knownportsorsystemports[6]TheyareusedbyportshavenumbersthatarepreassignedtothembytheIANA, andtheseareknownaswell-knownports(specifiedinRFC)TheyareusedbysystemprocessesthatprovidewidelyusedtypesofThislistofwell-knownport numbersspecifiestheportusedbytheserverprocessasitscontactportScrolldownbelowfortheportlisttablesFileTransferProtocolisaprotocolusedonthe InternetforsendingfilesFTPControlTCP/UDPPortNumbersEchoChargenFTPSSH/SCPTelnetSMTPWINS ReplicationWHOISTACACSDNSDHCP/BOOTPTFTPGopherFingerHTTPKerberosMSExchangePOPIdentNNTP(Usenet)NTPMicrosoftRPCNetBIOS IMAP4Thefollowingarethethreetypesofportswithcorrespondingportnumberranges:Well-known/Systemports–Registeredports–Dynamic/Privateports–Clickonthenetworkportchartabovetoviewtheprintable,searchablePDFversionTheportnumbersintherangefromto(0to 1)arethewell-knownportsor systemportsTheyaredividedintoclassesOfficial:PortisregisteredwithIANAfortheapplication[5]Unofficial:PortisnotregisteredwithIANAforthe applicationSubmittedtotheEngineeringSystemsDivisiononinPartialFulfillmentoftheRequirementsfortheDegreeofMasterofScienceinTCPandUDPport usageWellknownservicestypicallyrunonlowportsportsportnumbersCOMMONPORTSPortnumbersrangefromto,butonlyportsnumberstoarereserved forprivilegedservicesanddesignatedaswell-knownports