File Transfer Protocol e sebelisa port 20 le 21
File Transfer Protocol (FTP) e fana ka mokhoa oa ho romella tlhahiso-leseling ka inthanete, joalo ka Hypertext Transfer Protocol (HTTP) e etsang ka sebadi sa marang-rang. FTP, leha ho le joalo, e sebetsa likoung tse peli tse fapaneng tsa ho tsamaisoa ha Transmission Protocol ( TCP ): 20 le 21. Libaka tsena ka bobeli li tlameha ho buleloa marang-rang bakeng sa lifani tsa FTP tse atlehileng.
Ka mor'a hore lebitso le fuputso la FTP le nepahetseng le kenngoa ka software ea FTP ea bareki, software ea seva sa FTP e bula port 21, eo ka linako tse ling e bitsoa taelo kapa lebone la taolo, ka ho feletseng. Joale, mookameli o etsa hore ho be le kamano e 'ngoe hape le seva ho feta port 20 e le hore lifaele tsa' nete li fetisoe.
Sebaka se sa feleng sa ho romela litaelo le lifaele ka FTP se ka fetoloa, empa maemo a teng e le mananeo a bareki / mananeo, li-routers, le li-firewall kaofela li ka lumellana le likoung tse lekaneng ho etsa hore ho be bonolo haholoanyane.
Kamoo U ka Kopanyang Kateng ea FTP Port 21
Haeba FTP e sa sebetse, likou tse nepahetseng li ka 'na tsa se ke tsa buleha marang-rang. Sena se ka etsahala ka lehlakoreng la seva kapa lehlakoreng la bareki. Software leha e le efe e thibelang likoung e tlameha ho fetoha ka letsoho ho e bula, ho kenyeletsa li-routers le li-firewalls.
Ka nako e sa lekanyetsoang, li-routers le li-firewalls li ka 'na tsa se ke tsa lumellana le sefapeng sa 21. Ha FTP e sa sebetse, ho molemo ho qala ho hlahloba hore router e fetisetsa likōpo tse nepahetseng ho koung eo le hore firewall ha e thibele koung 21.
Tlhahiso : U ka sebelisa Port Checker ho hlahloba marang-rang oa hau ho bona hore na router e na le port 21 e bulehileng. Ho boetse ho na le sebopeho se bitsoang " passive mode" se ka sebelisoang haeba ho e-na le bothata ba ho kena ka morao ho router.
Ntle le ho netefatsa hore palo 21 e bulehile mahlakoreng ka bobeli a mocha oa puisano, kou ea 20 e boetse e lokela ho lumelloa marang-rang le ka har'a software ea bareki. Ho hlokomoloha ho bula lifofane ka bobeli ho thibela ho tlosoa hoa morao ho tsoa ho etsoa.
Hang ha e kopane le seva sa FTP, software ea bareki e fana ka bopaki ba ho kena-lebitso - lebitso le password - tse hlokahalang ho fihlella seva seo.
FileZilla le WinSCP ke bareki ba babeli ba tsebahalang ba FTP .