ͥåȥڥꥹ - SE̼η -

ͥåȥڥꥹȤλкȤǤͥåȥڥꥹȻι
̡ʤΥġ⡢μʤɤξǺܤޤкߥʡԤäƤޤ ͥåȥڥꥹ
кʤ麸κǤܤ֥ͥڡץ꡼ʵɾҡˤǡ
ͥåȥڥꥹȻ˹ʤȡͥåȥ˴ؤμ䵻ѤǤʤɲϤʸϤȤˤĤޤ
ˡλ˹ʤǤȤ뤳ȤǤޤ

ƥꡧ10.ץꥱءL5L7 > 10.5 FTP

FTPγ
FTPFile Transfer ProtocolˤȤϡդ̤ꡢեFileˤžTransferˤץȥProtocolˤǤ
FFFTPʤɤΡFTP饤Ȥ顢FTPФФե򥢥åץɤӡɤޤ

ftp

FTPHTTPȤϰۤʤꡢơȥեȸ롣FTPݡ21֤Τǡͥ뤳ȤǤ롣
21֥ݡȤѥݡȡ20֥ݡȤǡžѥݡ
FTPϡǡʿʸήǤʤǧڥǡID/ѥɡˤʿʸή롣ĤޤꡢƥŪˤϤդ路ʤ
ǡƥι⤤FTPȤSFTP(SSH Flie Transfer Protocol)ꡢFTP̿SSHǰŹ沽롣
Ǥϡ1Υ饤Ȥ1Υд֤ǤFTPѤեžǤϡĤΥͥѤƥǡžԤĤΥͥϥǡžѤѤʬƤꡢǡžǤ楳ޥɤ뤳ȤǽǤ롣(H19NW 34)פȽҤ٤Ƥ롣

FTPΥ
 
1)ClientServerFTP桡Port21
2)ClientServerFTPΥǡPort20
Port20ȻפäƤ¤ʥ¦ˤǤäץ㤷Ƴǧ
ClientΤɤΥݡȤ˥뤫ϡPORTޥɡʡˤΤ롣

̾⡼ɡActive⡼ɡˤξ硢Ф饯饤ȤФ̿Ԥ롣
Passive⡼ɤʤ饯饤ȤFTPФ20֥ݡȤǥ뤬̾⡼ɤʤ饵Фϲ֥ݡȤ˥Ф褤Τ
ΤΤPORTȤѥåȤǤ롣
ºݤFTPgetޥɤ¹ԤȡʲΤ褦PORTȤѥåȤƤΤ狼롣

ftp> get aaa.txt
200 PORT command successful.
150 Opening ASCII mode data connection for aaa.txt
226 Closing data connection.
ftp: 803 bytes received in 0.00Seconds 803000.00Kbytes/sec.

WindowsXPΥޥɥץץȤǤϡɸǤPASV⡼ɤ˹ԤʤեȤɬפ롣IEǤϥץǤǤ롣

FTPPassive⡼
FTPΥǡ̿ϡServerClient˸̿Ԥ롣ҳFTPФξ硢̿ϳؤ̿ʤΤǡFirewallǵݤ礬롣ʺǶFirewallбƤΤ¿
ǡFTPΥǡ̿Client¦⡼ɤꡢ줬Passive⡼ɤǤ롣


H29NW
14FTPˤեžˤϡѤȥǡžѤĤΥͥѤ롣Υͥ˴ؤ뵭ҤΤŬڤʤΤϤɤ줫, FTPϥѥå֥⡼ɤưΤȤ롣
ѥͥγΩϥ饤Ȥ饵ФФơǡžѥͥγΩϥФ饯饤ȤФƹԤ
ѥͥγΩϥФ饯饤ȤФơǡžѥͥγΩϥ饤Ȥ饵ФФƹԤ
ɤΥͥγΩ⥯饤Ȥ饵ФФƹԤ
ɤΥͥγΩ⥵Ф饯饤ȤФƹԤ

ϥ
ʸˡFTPϥѥå֥⡼ɤưȤޤѥå֥⡼ɤưϡɤΥͥ⥯饤Ȥ饵ФФƼ»ܤޤͤޤǤˡƥ֥⡼ɤξϡǤ

TrivialʴʰפʡFTP
ä˹ⶶ褵󤬻ʲ񤹤֥ȥӥפȤȤäΥȥӥǤ롣ɤ襤ʤɤȤ褦ʰ̣äȻפ

FTPȤΰ㤤ϡ
1)桼ǧڤ򤷤ʤ
2)TCPǤϤʤUDPѤ롢ʤ
ǡ512ХȤθĹʤɡץȥ뤽ΤΤDzƤ롣

H23NW13ˤ򸫤Ƥߤ褦
Ź¦L2SWϡSV¸Ƥʰ׷եžѥץȥǤΡϤѤƥǡž롣κȤϡŹޤôԤL2SW˥󤷡SVΡΡϤȥե̾ꤷޥɤƹԤ

ϰʲ
TFTP
IPɥ쥹

SSHѤFTP
SSH (Secure Shell)ϡUNIXϤΥޥɤ褿
FTPξ硢SSHǤSSLǤŹ沽Ǥ롣
㤤񤷤SSLξϡѥġȤɬפɸץȥϤʤ⤷ʤSSLñ˰Ź沽SSHϥʤΤǥޥޤ࿧ʤȤǤ


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