Iprotocol yokuTshintshiselwa kweFayile isebenzisa i-port 20 no-21
Iprotocol yokuTshintshiselwa kweFayile (FTP) inikeza indlela yokudlulisa ulwazi kwi-intanethi, kufana ne- Hypertext Transfer Protocol (HTTP) eyenziwa kwisiphequluli sewebhu. I-FTP, nangona kunjalo, isebenza kwiiNgxowankulu zoTshintsho lweTransmission Control ( TCP ) ezahlukeneyo: i-20 kunye no-21. Bobabini ezi zibuko kufuneka zivule kwi-intanethi ngokudluliselwa kweFTP.
Emva kokuba igama lomsebenzisi leFTP elichanekileyo lifakwe kwisofthiwe yomthengi we-FTP, isofthiwe yesiphakeli se- FTP ivula i- port 21, ebizwa ngezinye izihlandlo ebizwa ngokuba ngumyalelo okanye i-port control, ngokuzenzakalelayo. Emva koko, umthengi wenza enye inxibelelwano kumncedisi phezu kwe-port 20 ukwenzela ukuba ukutshintshwa kwefayile yangempela kuyenzeka.
I-port engapheliyo yokuthumela imiyalelo kunye neifayile kwiFTP ingatshintshwa, kodwa umgangatho ukhona ukwenzela ukuba iinkqubo zabaxhasi / iinkqubo zesoftware, ii-routers, kunye nezikhuni zivumelane zonke kwiichweba ezifanayo ukwenza ukucwangcisa kube lula.
Indlela yokudibanisa ngaphezu kweFTP Port 21
Ukuba i-FTP ayisebenzi, iifayili ezichanekileyo azivumelekanga ukuba zivule kwinethiwekhi. Oku kunokukwenzeka kwinqanaba lomncedisi okanye kwicala lomxhasi. Naliphi na isofthiwe esithintela izibuko kufuneka ishintshwe ngesandla ukuze ivule, kuquka ii-routers kunye nezikhuni.
Ngokungagqibekanga, ii-routers kunye neenqwelo zomlilo zingenako ukuwamkela uxhulumaniso kwi-port 21. Ukuba i-FTP ayisebenzi, kulunge ukuba uqale uqaphele ukuba i-router isithumela ngokufanelekileyo izicelo kwi-port kunye nokuba i-firewall ayivimbeli i-port 21.
Iphulo : Unokusebenzisa iPort Checker ukuskena inethwekhi yakho ukuze ubone ukuba i-router ine-port 21 evulekile. Kukho nenye into ebizwa ngokuba yindlela yokunyusa ingasetyenziswa xa kukho iingxaki ngokufikelela kwerekhodi emva kwe-router.
Ukongezelela ekuqinisekiseni ukuba i-port 21 ivuliwe kumacala amabini kwinqanaba lezonxibelelwano, i-port 20 kufuneka kwakhona ivumeleke kwintanethi kunye ne-software yomsebenzisi. Ukungahoyi ukuvula izibuko zombini kubathintela ukutshintshwa ngokutsha kokuphuma kwenzelwe.
Xa sele iqhagamshelwe kwiseva ye-FTP, isofthiwe yomthengi ikhuthaza iziqinisekiso zokungena ngemvume - igama lomsebenzisi kunye nephasiwedi - eziyimfuneko ukufikelela kulo mncedisi othile.
I-FileZilla kunye ne-WinSCP ngabathengi beFTP abadumileyo .