计算机网络教程课件ftp.doc

mandandExtensionRegistry March2010PROPOSEDSTANDARDRFC4217SecuringFTPwithTLS October2005PROPOSEDSTANDARDRFC3659ExtensionstoFTP March2007PROPOSEDSTANDARDRFC2640InternationalizationoftheFileTransferProtocol :FTPandHTTP May1999PROPOSEDSTANDARDRFC2428FTPExtensionsforIPv6andNATs September1998PROPOSEDSTANDARDRFC2389FeaturenegotiationmechanismfortheFileTransferProtocol August1998PROPOSEDSTANDARDRFC2228FTPSecurityExtensions October1997PROPOSEDSTANDARDRFC1440SIFT/UFT:Sender-Initiated/UnsolicitedFileTransfer ::765(IEN149)October1985FILETRANSFERPROTOCOL(FTP)StatusofthisMemoThismemoistheofficialspecificationoftheFileTransferProtocol(FTP).:CDUP(ChangetoParentDirectory),SMNT(StructureMount),STOU(StoreUnique),RMD(RemoveDirectory),MKD(MakeDirectory),PWD(PrintDirectory),andSYST(Sys42tem).)puterprogramsand/ordata),2)toencourageindirectorimplicit(viaprograms)puters,3)toshieldauserfromvariationsinfilestoragesystemsamonghosts,and4),thoughusabledirectlybyauserataterminal,-hosts,mini-hosts,personalworkstations,andTACs,withasimple,(TCP)[2]Protocol[3].ThesedocumentsarecontainedintheARPA-protocolhandbook[1].,thehistory,theterminology,;