{"id":80500,"date":"2020-05-06T13:42:29","date_gmt":"2020-05-06T11:42:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/protokoly-sftp-i-ftps"},"modified":"2020-05-06T13:42:29","modified_gmt":"2020-05-06T11:42:29","slug":"protokoly-sftp-i-ftps","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/protokoly-sftp-i-ftps","title":{"rendered":"Protokollet SFTP dhe FTPS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h1>Parath\u00ebnie<\/h1>\n<p><\/p>\n<p>Nj\u00eb jav\u00eb m\u00eb par\u00eb, un\u00eb shkrova nj\u00eb referat mbi tem\u00ebn e p\u00ebrmendur n\u00eb titull dhe u p\u00ebrballa me faktin se, t\u00eb themi, informatat e dobishme n\u00eb internet nuk jan\u00eb aq t\u00eb shumta. Kryesisht jan\u00eb fakte t\u00eb thata dhe udh\u00ebzime p\u00ebr konfigurimin. Prandaj, vendosa ta rregulloja pak tekstin dhe ta publikoj\u00eb at\u00eb si nj\u00eb artikull.<\/p>\n<p>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h1>\u00c7far\u00eb \u00ebsht\u00eb FTP<\/h1>\n<p><\/p>\n<p>FTP (File Transfer Protocol) \u2013 protokolli i transferimit t\u00eb skedar\u00ebve p\u00ebrmes rrjetit. \u00cbsht\u00eb nj\u00eb nga protokollet baz\u00eb t\u00eb Ethernet. U shfaq n\u00eb vitin 1971 dhe fillimisht punoi n\u00eb rrjetet DARPA. Aktualisht, ashtu si HTTP, transferimi i skedar\u00ebve bazohet n\u00eb nj\u00eb model q\u00eb p\u00ebrb\u00ebhet nga nj\u00eb grup protokollesh TCP\/IP (Transmission Control Protocol\/Internet Protocol). I p\u00ebrcaktuar n\u00eb RFC 959.<\/p>\n<p><\/p>\n<p>Protokolli p\u00ebrcakton t\u00eb following:<\/p>\n<\/p>\n<ul>\n<li>Si do t\u00eb kryhet verifikimi i gabimeve<\/li>\n<li>Metoda e paketimit t\u00eb t\u00eb dh\u00ebnave (n\u00ebse p\u00ebrdoret paketimi)<\/li>\n<li>Si p\u00ebrcakton pajisja d\u00ebrguese se ka p\u00ebrfunduar mesazhi<\/li>\n<li>Si p\u00ebrcakton pajisja marr\u00ebse se ka marr\u00eb mesazhin<\/li>\n<\/ul>\n<p><\/p>\n<h2>Nd\u00ebrveprimi midis klientit dhe serverit<\/h2>\n<p><\/p>\n<p>Le t\u00eb shqyrtojm\u00eb m\u00eb n\u00eb detaje proceset q\u00eb ndodhin gjat\u00eb pun\u00ebs me FTP. Lidhja iniciohet nga interpretuese e protokollit t\u00eb p\u00ebrdoruesit. Menaxhimi i shk\u00ebmbimit kryhet p\u00ebrmes nj\u00eb kanali menaxhimi n\u00eb standardin TELNET. Komandat FTP gjenerohen nga interpretuese e protokollit t\u00eb p\u00ebrdoruesit dhe d\u00ebrgohen n\u00eb server. P\u00ebrgjigjet e serverit i d\u00ebrgohen p\u00ebrdoruesit gjithashtu p\u00ebrmes kanali t\u00eb menaxhimit. N\u00eb rastin m\u00eb t\u00eb zakonsh\u00ebm, p\u00ebrdoruesi ka mund\u00ebsin\u00eb t\u00eb vendos\u00eb kontakt me interpretuese e protokollit t\u00eb serverit, duke p\u00ebrdorur mjete t\u00eb ndryshme nga interpretuese e p\u00ebrdoruesit.<\/p>\n<p><\/p>\n<p>Karakteristika kryesore e FTP \u00ebsht\u00eb se p\u00ebrdor dy lidhje. Nj\u00ebra prej tyre p\u00ebrdoret p\u00ebr t\u00eb d\u00ebrguar komanda n\u00eb server dhe ndodh automatikisht p\u00ebrmes TCP-portit 21, i cili mund t\u00eb ndryshohet. Lidhja menaxhuese ekziston gjithmon\u00eb derisa klienti t\u00eb komunikoj\u00eb me serverin. Kanali i menaxhimit duhet t\u00eb jet\u00eb i hapur gjat\u00eb d\u00ebrgimit t\u00eb t\u00eb dh\u00ebnave midis makinave. N\u00ebse mbyllet, transmetimi i t\u00eb dh\u00ebnave nd\u00ebrpritet. P\u00ebrmes lidhjes s\u00eb dyt\u00eb ndodh d\u00ebrgimi direkt i t\u00eb dh\u00ebnave. Ajo hapet \u00e7do her\u00eb kur d\u00ebrgohet nj\u00eb skedar midis klientit dhe serverit. N\u00eb rast se d\u00ebrgohen disa skedar\u00eb nj\u00ebkoh\u00ebsisht, p\u00ebr secilin hapet kanali i tij t\u00eb d\u00ebrgimit.<\/p>\n<p><\/p>\n<p>FTP mund t\u00eb funksionoj\u00eb n\u00eb nj\u00eb mod t\u00eb aktiv apo pasiv, nga zgjedhja e t\u00eb cilit varet m\u00ebnyra e vendosjes s\u00eb lidhjes. N\u00eb modin aktiv, klienti krijon nj\u00eb lidhje TCP kontrolluese me serverin dhe i d\u00ebrgon serverit adres\u00ebn e tij IP dhe nj\u00eb num\u00ebr t\u00eb rast\u00ebsish\u00ebm t\u00eb portit t\u00eb klientit, pas s\u00eb cil\u00ebs pret q\u00eb serveri t\u00eb filloj\u00eb nj\u00eb lidhje TCP me k\u00ebt\u00eb adres\u00eb dhe numrin e portit. N\u00eb rastin kur klienti ndodhet pas nj\u00eb firewalle dhe nuk mund t\u00eb pranoj\u00eb nj\u00eb lidhje TCP hyr\u00ebse, mund t\u00eb p\u00ebrdoret modin pasiv. N\u00eb k\u00ebt\u00eb mod, klienti p\u00ebrdor rrjedh\u00ebn e kontrollit p\u00ebr t'i d\u00ebrguar serverit komand\u00ebn PASV, dhe m\u00eb pas merr nga serveri adres\u00ebn e tij IP dhe numrin e portit, t\u00eb cilat p\u00ebrfundimisht p\u00ebrdoren nga klienti p\u00ebr t\u00eb hapur nj\u00eb rrjedh\u00eb t\u00eb dh\u00ebnash nga porti i tij i rast\u00ebsish\u00ebm. <\/p>\n<p><\/p>\n<p>Ka mund\u00ebsi q\u00eb t\u00eb dh\u00ebnat t\u00eb transferohen n\u00eb nj\u00eb makin\u00eb tjet\u00ebr. N\u00eb k\u00ebt\u00eb rast, p\u00ebrdoruesi organizon nj\u00eb kanal kontrollues me dy server\u00eb dhe organizon nj\u00eb kanal t\u00eb drejtp\u00ebrdrejt\u00eb t\u00eb t\u00eb dh\u00ebnave midis tyre. Komandat e kontrollit kalojn\u00eb p\u00ebrmes p\u00ebrdoruesit, nd\u00ebrsa t\u00eb dh\u00ebnat shkojn\u00eb drejtp\u00ebrdrejt midis server\u00ebve.<\/p>\n<p><\/p>\n<p>Gjat\u00eb transferimit t\u00eb t\u00eb dh\u00ebnave n\u00eb rrjet mund t\u00eb p\u00ebrdoren kat\u00ebr prezantime t\u00eb t\u00eb dh\u00ebnave:<\/p>\n<p><\/p>\n<ul>\n<li>ASCII \u2013 p\u00ebrdoret p\u00ebr tekst. T\u00eb dh\u00ebnat, n\u00ebse \u00ebsht\u00eb e nevojshme, konvertohen para transferimit nga p\u00ebrfaq\u00ebsimi simbolik n\u00eb hostin d\u00ebrgues n\u00eb 'ASCII me tet\u00eb bite', dhe (po ashtu, n\u00ebse \u00ebsht\u00eb e nevojshme) n\u00eb p\u00ebrfaq\u00ebsimin simbolik t\u00eb hostit marr\u00ebs. K\u00ebshtu, ndryshojn\u00eb karakteret e kalimit t\u00eb rreshtit. Si pasoj\u00eb, ky mod nuk \u00ebsht\u00eb i p\u00ebrshtatsh\u00ebm p\u00ebr skedar\u00eb q\u00eb p\u00ebrmbajn\u00eb jo vet\u00ebm tekst t\u00eb zakonsh\u00ebm.<\/li>\n<li>Modi binar \u2013 pajisja d\u00ebrguese d\u00ebrgon \u00e7do skedar byte p\u00ebr byte, nd\u00ebrsa marr\u00ebsi ruan rrjedh\u00ebn e byte-ve gjat\u00eb marrjes. Mb\u00ebshtetje p\u00ebr k\u00ebt\u00eb mod \u00ebsht\u00eb rekomanduar p\u00ebr t\u00eb gjitha implementimet e FTP.<\/li>\n<li>EBCDIC \u2013 p\u00ebrdoret p\u00ebr transferimin e tekstit t\u00eb zakonsh\u00ebm midis hosteve n\u00eb kodimin EBCDIC. N\u00eb t\u00eb tjera aspekte, ky mod \u00ebsht\u00eb i ngjash\u00ebm me modin ASCII.<\/li>\n<li>Modi lokal \u2013 lejon dy kompjuter\u00eb me konfigurations identike t\u00eb d\u00ebrgojn\u00eb t\u00eb dh\u00ebna n\u00eb formatin e tyre pa konvertim n\u00eb ASCII.<\/li>\n<\/ul>\n<p><\/p>\n<p>Transferimi i t\u00eb dh\u00ebnave mund t\u00eb realizohet n\u00eb ndonj\u00eb nga tre modet:<\/p>\n<p><\/p>\n<ul>\n<li>Modi rrjedh\u00ebs \u2013 t\u00eb dh\u00ebnat d\u00ebrgohen n\u00eb form\u00ebn e nj\u00eb rrjedhe t\u00eb vazhdueshme, duke e \u00e7liruar FTP nga kryerja e ndonj\u00eb p\u00ebrpunimi. N\u00eb vend t\u00eb k\u00ebsaj, e gjith\u00eb p\u00ebrpunimi kryhet nga TCP. Nj\u00eb tregues p\u00ebrfundimi skedari nuk k\u00ebrkohet, p\u00ebrve\u00e7 ndarjes s\u00eb t\u00eb dh\u00ebnave n\u00eb regjistra.<\/li>\n<li>Re\u017eimi i bllokut \u2013 FTP e ndan t\u00eb dh\u00ebnat n\u00eb disa blloqe (blloku i titullit, numri i bajt\u00ebve, fusha e t\u00eb dh\u00ebnave) dhe m\u00eb pas i d\u00ebrgon ato p\u00ebrmes TCP.<\/li>\n<li>Re\u017eimi i kompresimit \u2013 t\u00eb dh\u00ebnat kompresohen me nj\u00eb algorit\u00ebm t\u00eb vet\u00ebm (zakonisht kodimi i serive t\u00eb gjata).<\/li>\n<\/ul>\n<p><\/p>\n<p>FTP server \u2013 \u00ebsht\u00eb nj\u00eb server q\u00eb parashikon mund\u00ebsin\u00eb e p\u00ebrdorimit t\u00eb protokollit t\u00eb transferimit t\u00eb skedar\u00ebve. Ai ka disa ve\u00e7ori q\u00eb e ndryshojn\u00eb at\u00eb nga server\u00ebt e zakonsh\u00ebm t\u00eb uebit:<\/p>\n<p><\/p>\n<ul>\n<li>K\u00ebrkohet autentifikimi i p\u00ebrdoruesve<\/li>\n<li>T\u00eb gjitha operacionet kryhen brenda seanc\u00ebs aktuale<\/li>\n<li>Mund\u00ebsia e realizimit t\u00eb veprimeve t\u00eb ndryshme me sistemin e skedar\u00ebve<\/li>\n<li>P\u00ebrdoret nj\u00eb kanale e ve\u00e7ant\u00eb p\u00ebr \u00e7do lidhje<\/li>\n<\/ul>\n<p><\/p>\n<p>FTP client \u2013 \u00ebsht\u00eb nj\u00eb program q\u00eb lejon t\u00eb lidheni me nj\u00eb server t\u00eb larg\u00ebt p\u00ebrmes FTP dhe gjithashtu t\u00eb kryeni veprimet e nevojshme me element\u00ebt e sistemit t\u00eb skedar\u00ebve. Klienti mund t\u00eb jet\u00eb nj\u00eb shfletues, n\u00eb t\u00eb cilin duhet t\u00eb shkruani adres\u00ebn, e cila p\u00ebrfaq\u00ebson nj\u00eb rrug\u00eb drejt nj\u00eb katalogu ose skedari t\u00eb caktuar n\u00eb serverin e larg\u00ebt, n\u00eb p\u00ebrputhje me diagramin e zakonsh\u00ebm t\u00eb URL:<\/p>\n<p><\/p>\n<p><code>ftp:\/\/user:pass@address:port\/directory\/file<\/code><\/p>\n<p><\/p>\n<p>Megjithat\u00eb, p\u00ebrdorimi i shfletuesit n\u00eb k\u00ebt\u00eb m\u00ebnyr\u00eb lejon vet\u00ebm shikimin ose shkarkimin e skedar\u00ebve interesant\u00eb. P\u00ebr t\u00eb shfryt\u00ebzuar plot\u00ebsisht t\u00eb gjitha p\u00ebrfitimet e FTP, duhet t\u00eb p\u00ebrdorni nj\u00eb softuer t\u00eb specializuar si klient. <\/p>\n<p><\/p>\n<p>FTP autentifikimi p\u00ebrdor skem\u00ebn e emrit t\u00eb p\u00ebrdoruesit\/faqes p\u00ebr t\u00eb siguruar akses. Emri i p\u00ebrdoruesit d\u00ebrgohet serverit me komand\u00ebn USER, nd\u00ebrsa fjal\u00ebkalimi me komand\u00ebn PASS. N\u00ebse informacioni i ofruar nga klienti pranohet nga serveri, at\u00ebher\u00eb serveri i d\u00ebrgon klientit nj\u00eb ftes\u00eb dhe fillon seanca. P\u00ebrdoruesit mund, n\u00ebse serveri e mb\u00ebshtet k\u00ebt\u00eb ve\u00e7ori, t\u00eb hyjn\u00eb n\u00eb sistem pa ofruar t\u00eb dh\u00ebna t\u00eb identifikimit, por serveri mund t\u00eb ofroj\u00eb vet\u00ebm akses t\u00eb kufizuar p\u00ebr k\u00ebto seanca.<\/p>\n<p><\/p>\n<p>Host-i q\u00eb ofron sh\u00ebrbimin FTP mund t\u00eb ofroj\u00eb akses anonim n\u00eb FTP. P\u00ebrdoruesit zakonisht hyjn\u00eb n\u00eb sistem si 'anonymous' (mund t\u00eb jet\u00eb ndjesor ndaj rastit n\u00eb disa server\u00eb FTP) si em\u00ebr p\u00ebrdoruesi. Megjith\u00ebse zakonisht p\u00ebrdoruesit k\u00ebrkohen t\u00eb d\u00ebrgojn\u00eb adres\u00ebn e tyre t\u00eb post\u00ebs elektronike n\u00eb vend t\u00eb fjal\u00ebkalimit, nuk b\u00ebhet asnj\u00eb verifikim n\u00eb fakt. Shum\u00eb host-e FTP q\u00eb ofrojn\u00eb azhurnime softuerike mb\u00ebshtesin aksesin anonim.<\/p>\n<p><\/p>\n<h2>Skema e protokollit<\/h2>\n<p><\/p>\n<p>Nd\u00ebrveprimi \"klient-server\" gjat\u00eb lidhjes FTP mund t\u00eb paraqitet n\u00eb k\u00ebt\u00eb m\u00ebnyr\u00eb:<\/p>\n<p>\n<img decoding=\"async\" alt=\"Protokollet SFTP dhe FTPS\" src=\"\/wp-content\/uploads\/2020\/05\/9513d1898a0938a30b0f87d7956bc98f.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h1>FTP i Sigurt<\/h1>\n<p><\/p>\n<p>FTP nuk \u00ebsht\u00eb menduar fillimisht si nj\u00eb protokoll i sigurt, pasi ishte n\u00eb sh\u00ebrbim p\u00ebr lidhjen midis disa objekteve dhe institucioneve ushtarake. Por me zhvillimin dhe p\u00ebrhapjen e internetit, rreziku i qasjes s\u00eb paautorizuar \u00ebsht\u00eb rritur shum\u00eb her\u00eb. K\u00ebshtu q\u00eb lindi nevoja p\u00ebr t\u00eb mbrojtur server\u00ebt nga sulme t\u00eb ndryshme. N\u00eb maj 1999, autor\u00ebt e RFC 2577 identifikuan vulnerabilitetet n\u00eb list\u00ebn e m\u00ebposhtme t\u00eb problemeve:<\/p>\n<p><\/p>\n<ul>\n<li>Sulmet e fshehta (bounce attacks)<\/li>\n<li>Sulmet e spoofing (spoof attacks)<\/li>\n<li>Sulmet me metod\u00ebn e forc\u00ebs brute (brute force attacks)<\/li>\n<li>Kapja e paketimeve, sniffing (packet capture, sniffing)<\/li>\n<li>Kapja e porteve (port stealing)<\/li>\n<\/ul>\n<p><\/p>\n<p>FTP i zakonsh\u00ebm nuk ka mund\u00ebsin\u00eb p\u00ebr t\u00eb transferuar t\u00eb dh\u00ebna n\u00eb form\u00eb t\u00eb enkriptuar, gj\u00eb q\u00eb do t\u00eb thot\u00eb se emrat e p\u00ebrdoruesve, fjal\u00ebkalimet, komandat dhe informacionet e tjera mund t\u00eb kapen leht\u00ebsisht nga sulmuesit. Nj\u00eb zgjidhje e zakonshme p\u00ebr k\u00ebt\u00eb problem \u00ebsht\u00eb t\u00eb p\u00ebrdoren versionet \"t\u00eb sigurta\", t\u00eb mbrojtura nga TLS t\u00eb protokollit t\u00eb ndjesh\u00ebm (FTPS) ose nj\u00eb protokoll tjet\u00ebr, m\u00eb t\u00eb sigurt, si SFTP\/SCP, q\u00eb ofrohet me shumic\u00ebn e implementimeve t\u00eb protokollit Secure Shell.<\/p>\n<p><\/p>\n<h2>FTPS<\/h2>\n<p><\/p>\n<p>FTPS (FTP + SSL) \u2013 nj\u00eb zgjerim i protokollit standard t\u00eb transferimit t\u00eb skedar\u00ebve, q\u00eb shton n\u00eb funksionalitetin e tij baz\u00eb krijimin e sesioneve t\u00eb enkriptuara me ndihm\u00ebn e protokollit SSL (Secure Sockets Layer \u2014 niveli i socket-eve t\u00eb sigurt). Aktualisht, mbrojtja garantohet nga ana e analogut t\u00eb saj m\u00eb t\u00eb avancuar TLS (Transport Layer Security \u2014 mbrojtja e nivelit t\u00eb transportit).<\/p>\n<p><\/p>\n<h3>SSL<\/h3>\n<p><\/p>\n<p>Protokolli SSL u propozua nga korporata Netscape Communications n\u00eb vitin 1996 me q\u00ebllim t\u00eb sigurimit t\u00eb siguris\u00eb dhe privat\u00ebsis\u00eb s\u00eb lidhjeve internet. Protokolli mb\u00ebshtet autentikimin (konfirmimin e identitetit) t\u00eb klientit dhe serverit, nuk varet nga aplikacionet dhe \u00ebsht\u00eb i paduksh\u00ebm p\u00ebr protokollet HTTP, FTP dhe Telnet.<\/p>\n<p><\/p>\n<p>Protokolli SSL Handshake p\u00ebrb\u00ebhet nga dy etapa: konfirmimi i identitetit t\u00eb serverit dhe konfirmimi i mundsh\u00ebm i identitetit t\u00eb klientit. N\u00eb etapen e par\u00eb, serveri n\u00eb p\u00ebrgjigje t\u00eb k\u00ebrkes\u00ebs s\u00eb klientit d\u00ebrgon certifikat\u00ebn e tij dhe parametrat e enkriptimit. Pas k\u00ebsaj, klienti gjeneron nj\u00eb \u00e7el\u00ebs master, e enkripton at\u00eb me \u00e7el\u00ebsin publik t\u00eb serverit dhe ia d\u00ebrgon serverit. Serveri e dekriptohet \u00e7el\u00ebsin master me \u00e7el\u00ebsin e tij privat dhe konfirmon identitetin e tij p\u00ebr klientin, duke i kthyer nj\u00eb mesazh t\u00eb n\u00ebnshkruar me \u00e7el\u00ebsin master t\u00eb klientit.<\/p>\n<p><\/p>\n<p>T\u00eb dh\u00ebnat e m\u00ebtejshme kodohen dhe n\u00ebnshkruhen me \u00e7el\u00ebsat e marra nga ky \u00e7el\u00ebs master. N\u00eb faz\u00ebn e dyt\u00eb, e cila nuk \u00ebsht\u00eb e detyrueshme, serveri d\u00ebrgon nj\u00eb k\u00ebrkes\u00eb klientit, dhe klienti konfirmon autentikimin e serverit duke kthyer k\u00ebrkes\u00ebn me n\u00ebnshkrimin e tij digjital dhe certifikat\u00ebn e \u00e7el\u00ebsit publik.<\/p>\n<p><\/p>\n<p>SSL mb\u00ebshtet nj\u00eb shum\u00ebllojshm\u00ebri algoritmesh kriptografike. Gjat\u00eb vendosjes s\u00eb lidhjes p\u00ebrdoret sistemi i \u00e7el\u00ebsit publik RSA. Pas shk\u00ebmbimit t\u00eb \u00e7el\u00ebsave, p\u00ebrdoren shum\u00eb cifra t\u00eb ndryshme: RC2, RC4, IDEA, DES dhe TripleDES. Gjithashtu p\u00ebrdoret MD5 \u2013 algoritmi p\u00ebr krijimin e mesazheve digeste. Sintaksa e certifikatave t\u00eb \u00e7el\u00ebsit publik \u00ebsht\u00eb e p\u00ebrshkruar n\u00eb X.509.<\/p>\n<p><\/p>\n<p>Nj\u00eb nga avantazhet e r\u00ebnd\u00ebsishme t\u00eb SSL \u00ebsht\u00eb pavar\u00ebsia e tij e plot\u00eb nga platformat softuerike. Protokolli \u00ebsht\u00eb zhvilluar mbi parimet e portabilitetit dhe ideologjia e tij nd\u00ebrtuese, nuk varet nga aplikacionet n\u00eb t\u00eb cilat p\u00ebrdoret. P\u00ebrve\u00e7 k\u00ebsaj, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme q\u00eb pran\u00eb protokollit SSL, mund t\u00eb vendosen dhe protokolle t\u00eb tjera transparent; ose p\u00ebr t\u00eb rritur akoma m\u00eb shum\u00eb nivelin e mbrojtjes s\u00eb informacionit, ose p\u00ebr t\u00eb p\u00ebrshtatur kapacitetet kriptografike t\u00eb SSL p\u00ebr ndonj\u00eb detyr\u00eb tjet\u00ebr t\u00eb caktuar.<\/p>\n<p><\/p>\n<h3>Lidhja SSL<\/h3>\n<p>\n<img decoding=\"async\" alt=\"Protokollet SFTP dhe FTPS\" src=\"\/wp-content\/uploads\/2020\/05\/5c002ffba19382c1d3b330d7c948692b.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kanalet e sigurta t\u00eb ofruara nga SSL kan\u00eb tri ve\u00e7ori kryesore: <\/p>\n<p><\/p>\n<ul>\n<li>Kanal \u00ebsht\u00eb privat. Kriptimi p\u00ebrdoret p\u00ebr t\u00eb gjitha mesazhet pas nj\u00eb dialogu t\u00eb thjesht\u00eb, i cili sh\u00ebrben p\u00ebr t\u00eb p\u00ebrcaktuar \u00e7el\u00ebsin sekret.<\/li>\n<li>Kanal \u00ebsht\u00eb i autentikuar. Ana e serverit t\u00eb dialogut gjithmon\u00eb autentikohet, nd\u00ebrsa ana e klientit autentikohet n\u00eb m\u00ebnyr\u00eb opsionale.<\/li>\n<li>Kanal \u00ebsht\u00eb i besuesh\u00ebm. Transporti i mesazheve p\u00ebrfshin verifikimin e integritetit (me ndihm\u00ebn e MAC).<\/li>\n<\/ul>\n<p><\/p>\n<h3>Ve\u00e7orit\u00eb e FTPS<\/h3>\n<p><\/p>\n<p>Ekzistojn\u00eb dy realizime t\u00eb FTPS, q\u00eb p\u00ebrdorin metoda t\u00eb ndryshme p\u00ebr t\u00eb siguruar sigurin\u00eb: <\/p>\n<p><\/p>\n<ul>\n<li>Metoda e padukshme supozon p\u00ebrdorimin e protokollit standard SSL me krijimin e sesionit p\u00ebrpara d\u00ebrgimit t\u00eb t\u00eb dh\u00ebnave, e cila, nga ana tjet\u00ebr, shkel kompatibilitetin me klient\u00ebt dhe server\u00ebt e zakonsh\u00ebm FTP. P\u00ebr t\u00eb ruajtur kompatibilitetin me klient\u00ebt q\u00eb nuk mb\u00ebshtesin FTPS, porti TCP 990 p\u00ebrdoret p\u00ebr lidhjen kontrolluese dhe porti 989 p\u00ebr transferimin e t\u00eb dh\u00ebnave. Kjo lejon ruajtjen e portit standard 21 p\u00ebr protokollin FTP. Kjo metod\u00eb \u00ebsht\u00eb konsideruar e vjetruar.<\/li>\n<li>FTPS i qart\u00eb \u00ebsht\u00eb shum\u00eb m\u00eb i p\u00ebrshtatsh\u00ebm, pasi p\u00ebrdor komandat standarde FTP, por gjat\u00eb p\u00ebrgjigjes kodifikon t\u00eb dh\u00ebnat, q\u00eb lejon p\u00ebrdorimin e nj\u00ebjt\u00ebs lidhje menaxhuese p\u00ebr FTP dhe FTPS. Klienti duhet t\u00eb k\u00ebrkoj\u00eb qart\u00eb transmetimin e sigurt t\u00eb t\u00eb dh\u00ebnave nga serveri, dhe pastaj t\u00eb miratoj\u00eb metod\u00ebn e kodifikimit. N\u00ebse klienti nuk k\u00ebrkon transmetim t\u00eb sigurt, serveri FTPS ka t\u00eb drejt\u00eb ta mbaj\u00eb ose ta mbyll\u00eb lidhjen pa siguri. Mekanizmi i pajtimit t\u00eb identifikimit dhe mbrojtjes s\u00eb t\u00eb dh\u00ebnave u shtua n\u00ebn RFC 2228, i cili p\u00ebrfshin nj\u00eb komand\u00eb t\u00eb re FTP AUTH. Megjithat\u00eb, ky standard nuk p\u00ebrcakton qart\u00eb mekanizmat e mbrojtjes, ai p\u00ebrcakton se lidhja e sigurt duhet t\u00eb iniciohet nga klienti duke p\u00ebrdorur algoritmin e p\u00ebrshkruar m\u00eb par\u00eb. N\u00ebse lidhjet e sigurta nuk mb\u00ebshteten nga serveri, duhet t\u00eb kthehet kodi i gabimit 504. Klient\u00ebt FTPS mund t\u00eb marrin informacion mbi protokollet e mbrojtjes q\u00eb mb\u00ebshtetet nga serveri p\u00ebrmes komand\u00ebs FEAT, megjithat\u00eb serveri nuk \u00ebsht\u00eb i detyruar t\u00eb shpall\u00eb se cilat nivele sigurie mb\u00ebshtet. Komandat m\u00eb t\u00eb zakonshme FTPS jan\u00eb AUTH TLS dhe AUTH SSL, q\u00eb ofrojn\u00eb mbrojtjen TLS dhe SSL p\u00ebrkat\u00ebsisht.<\/li>\n<\/ul>\n<p><\/p>\n<h2>SFTP<\/h2>\n<p><\/p>\n<p>SFTP (Secure File Transfer Protocol) \u2013 \u00ebsht\u00eb nj\u00eb protokoll i nivelit aplikativ p\u00ebr transferimin e skedar\u00ebve, q\u00eb funksionon mbi nj\u00eb kanal t\u00eb sigurt. Nuk duhet ngat\u00ebrruar me (Simple File Transfer Protocol), q\u00eb ka t\u00eb nj\u00ebjtin shkurtim. Ndryshe nga FTPS, i cili \u00ebsht\u00eb thjesht nj\u00eb zgjerim i FTP-s\u00eb, SFTP \u00ebsht\u00eb nj\u00eb protokoll i ve\u00e7ant\u00eb dhe jo i lidhur me t\u00eb, q\u00eb p\u00ebrdor SSH (Secure Shell \u2013 Shell i sigurt) si baz\u00eb.<\/p>\n<p><\/p>\n<h3>Shell i Sigurt<\/h3>\n<p><\/p>\n<p>Protokolli u zhvillua nga nj\u00eb grup IETF t\u00eb quajtur Secsh. Dokumentacioni i pun\u00ebs p\u00ebr protokollin e ri SFTP nuk u b\u00eb standard zyrtar, megjithat\u00eb filloi t\u00eb p\u00ebrdoret masivisht p\u00ebr zhvillimin e aplikacioneve. M\u00eb pas, u l\u00ebshuan gjasht\u00eb versione t\u00eb protokollit. Megjithat\u00eb, zgjerimi gradual i funksionalitetit t\u00eb tij \u00e7oi n\u00eb vendimin dat\u00eb 14 gusht 2006 p\u00ebr t\u00eb ndaluar pun\u00ebn mbi zhvillimin e protokollit p\u00ebr shkak t\u00eb p\u00ebrfundimit t\u00eb detyr\u00ebs kryesore t\u00eb projektit (zhvillimi i SSH) dhe munges\u00ebs s\u00eb nj\u00eb niveli t\u00eb mjaftuesh\u00ebm ekspertiz\u00eb p\u00ebr kalimin n\u00eb zhvillimin e nj\u00eb protokolli t\u00eb plot\u00eb t\u00eb sistemit t\u00eb skedar\u00ebve t\u00eb larg\u00ebt.<\/p>\n<p><\/p>\n<p>SSH \u00ebsht\u00eb nj\u00eb protokoll rrjeti q\u00eb lejon menaxhimin e larg\u00ebt t\u00eb sistemit operativ dhe tunelim t\u00eb lidhjeve TCP (p.sh., p\u00ebr transferimin e skedar\u00ebve). Ai \u00ebsht\u00eb i ngjash\u00ebm n\u00eb funksionalitet me protokollet Telnet dhe rlogin, por, ndryshe nga ato, kodon t\u00eb gjith\u00eb trafikun, duke p\u00ebrfshir\u00eb edhe fjal\u00ebkalimet e d\u00ebrguara. SSH lejon zgjedhjen e algoritmeve t\u00eb ndryshme t\u00eb kodimit. Klient\u00ebt dhe server\u00ebt SSH jan\u00eb t\u00eb disponuesh\u00ebm p\u00ebr shumic\u00ebn e sistemeve operative rrjetore.<\/p>\n<p><\/p>\n<p>SSH lejon transferimin n\u00eb m\u00ebnyr\u00eb t\u00eb sigurt n\u00eb nj\u00eb ambient t\u00eb paprovuar t\u00eb pothuajse \u00e7do protokolli tjet\u00ebr rrjeti. K\u00ebshtu, \u00ebsht\u00eb e mundur jo vet\u00ebm t\u00eb punoni n\u00eb m\u00ebnyr\u00eb t\u00eb larg\u00ebt n\u00eb nj\u00eb kompjuter p\u00ebrmes nj\u00eb shell komandash, por gjithashtu t\u00eb d\u00ebrgoni n\u00ebp\u00ebrmjet nj\u00eb kanali t\u00eb koduar edhe flukset audio ose video (p.sh., nga nj\u00eb webcam). Gjithashtu, SSH mund t\u00eb p\u00ebrdor\u00eb kompresimin e t\u00eb dh\u00ebnave t\u00eb d\u00ebrguara p\u00ebr t'i koduar ato m\u00eb pas, q\u00eb \u00ebsht\u00eb e dobishme, p.sh., p\u00ebr nisjen e larg\u00ebt t\u00eb klient\u00ebve X Window System.<\/p>\n<p><\/p>\n<p>Versioni i par\u00eb i protokollit, SSH-1, u zhvillua n\u00eb vitin 1995 nga studiuesi Tatu Yl\u00f6nen nga Universiteti i Teknologjis\u00eb n\u00eb Helsinkin (Finland\u00eb). SSH-1 u shkrua p\u00ebr t'u ofruar m\u00eb shum\u00eb konfidencialitet se protokollet rlogin, telnet dhe rsh. N\u00eb vitin 1996 u zhvillua nj\u00eb version m\u00eb t\u00eb sigurt t\u00eb protokollit, SSH-2, q\u00eb \u00ebsht\u00eb i papajtuesh\u00ebm me SSH-1. Protokolli fitoi nj\u00eb popullaritet edhe m\u00eb t\u00eb madh dhe deri n\u00eb vitin 2000 kishte rreth dy milion\u00eb p\u00ebrdorues. Aktualisht, me termin \"SSH\" zakonisht kuptohet pik\u00ebrisht SSH-2, pasi versioni i par\u00eb i protokollit p\u00ebr shkak t\u00eb mang\u00ebsive t\u00eb konsiderueshme tani nuk p\u00ebrdoret pothuajse fare. N\u00eb vitin 2006, protokolli u miratua nga grupi i pun\u00ebs IETF si nj\u00eb standard interneti.<\/p>\n<p><\/p>\n<p>Jan\u00eb t\u00eb zakonshme dy realizime t\u00eb SSH: nj\u00eb private komerciale dhe nj\u00eb falas. Realizimi falas quhet OpenSSH. Deri n\u00eb vitin 2006, 80% e kompjuter\u00ebve n\u00eb rrjetin internet p\u00ebrdornin pik\u00ebrisht OpenSSH. Realizimi privat zhvillohet nga organizata SSH Communications Security, e cila \u00ebsht\u00eb nj\u00eb deg\u00eb p\u00ebrqindje e korporat\u00ebs Tectia, dhe \u00ebsht\u00eb falas p\u00ebr p\u00ebrdorim jo-komercial. K\u00ebto realizime p\u00ebrmbajn\u00eb nj\u00eb set praktikisht t\u00eb nj\u00ebjt\u00eb komandash.<\/p>\n<p><\/p>\n<p>Protokolli SSH-2, ndryshe nga protokolli telnet, \u00ebsht\u00eb i q\u00ebndruesh\u00ebm ndaj sulmeve t\u00eb p\u00ebrgjimit t\u00eb trafikut (\"sniffing\"), por jo ndaj sulmeve \"njeriu n\u00eb mes\". Protokolli SSH-2 gjithashtu \u00ebsht\u00eb i q\u00ebndruesh\u00ebm ndaj sulmeve p\u00ebrmes bashkimit n\u00eb mes (angl. session hijacking), pasi nuk \u00ebsht\u00eb e mundur t\u00eb p\u00ebrfshiheni n\u00eb nj\u00eb seanc\u00eb tashm\u00eb t\u00eb vendosur ose ta kapni at\u00eb.<\/p>\n<p><\/p>\n<p>P\u00ebr t\u00eb parandaluar sulmet \"njeriu n\u00eb mes\" kur lidhemi me nj\u00eb host, \u00e7el\u00ebsi i t\u00eb cilit nuk \u00ebsht\u00eb ende i njohur p\u00ebr klientin, softueri klient tregon p\u00ebrdoruesit \"shtres\u00ebn e \u00e7el\u00ebsit\" (angl. key fingerprint). Rekomandohet t\u00eb kontrolloni me kujdes shtres\u00ebn e \u00e7el\u00ebsit t\u00eb treguar nga softueri klient me shtres\u00ebn e \u00e7el\u00ebsit t\u00eb serverit, p\u00ebrkat\u00ebsisht t\u00eb marr\u00eb n\u00ebp\u00ebrmjet kanaleve t\u00eb besueshme ose personalisht.<\/p>\n<p><\/p>\n<p>Mb\u00ebshtetje p\u00ebr SSH \u00ebsht\u00eb e realizuar n\u00eb t\u00eb gjitha sistemet UNIX-p\u00ebrngjashme, dhe n\u00eb shumic\u00ebn e tyre mes mjeteve standarde jan\u00eb p\u00ebrfshir\u00eb klienti dhe serveri ssh. Ekzistojn\u00eb shum\u00eb implementime t\u00eb klient\u00ebve SSH p\u00ebr OS q\u00eb nuk jan\u00eb UNIX. Protokolli ka fituar popullaritet t\u00eb madh pas zhvillimit t\u00eb gjer\u00eb t\u00eb analizator\u00ebve t\u00eb trafikut dhe m\u00ebnyrave p\u00ebr t\u00eb qen\u00eb shum\u00ebvje\u00e7ar n\u00eb rrjetet lokale, si nj\u00eb zgjidhje alternative p\u00ebr protokollin e pasigurt Telnet p\u00ebr menaxhimin e nod\u00ebve t\u00eb r\u00ebnd\u00ebsish\u00ebm.<\/p>\n<p><\/p>\n<h3>Lidhja me p\u00ebrdorimin e SSH<\/h3>\n<p><\/p>\n<p>P\u00ebr t\u00eb punuar me SSH nevojitet nj\u00eb server SSH dhe nj\u00eb klient SSH. Serveri d\u00ebgjon lidhjet nga makinat klient dhe, kur vendoset lidhja, kryen autentifikimin, pas s\u00eb cil\u00ebs fillon sh\u00ebrbimin p\u00ebr klientin. Klienti p\u00ebrdoret p\u00ebr t\u00eb hyr\u00eb n\u00eb nj\u00eb makin\u00eb t\u00eb larg\u00ebt dhe p\u00ebr t\u00eb ekzekutuar komandat.<\/p>\n<p>\n<img decoding=\"async\" alt=\"Protokollet SFTP dhe FTPS\" src=\"\/wp-content\/uploads\/2020\/05\/2370127e0483cf579c3ae461819ada7c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h3>Krahasimi me FTPS<\/h3>\n<p><\/p>\n<p>E r\u00ebnd\u00ebsishmja q\u00eb e ndan SFTP nga FTP standard dhe FTPS \u00ebsht\u00eb se SFTP e kodon absolutisht t\u00eb gjitha komandat, emrat e p\u00ebrdoruesve, fjal\u00ebkalimet dhe informacionin tjet\u00ebr t\u00eb ndjesh\u00ebm.<\/p>\n<p><\/p>\n<p>T\u00eb dy protokollet, FTPS dhe SFTP, p\u00ebrdorin nj\u00eb kombinim algoritmesh asimetrike (RSA, DSA), algoritmesh simetrike (DES\/3DES, AES, Twhofish etj.), si dhe algoritmin e shk\u00ebmbimit t\u00eb \u00e7el\u00ebsit. P\u00ebr autentifikim, FTPS (ose, p\u00ebr t\u00eb qen\u00eb m\u00eb t\u00eb sakt\u00eb, SSL\/TLS sipas protokollit FTP) p\u00ebrdor certifikatat X.509, nd\u00ebrsa SFTP (protokolli SSH) p\u00ebrdor \u00e7el\u00ebsat SSH.<\/p>\n<p><\/p>\n<p>Certifikatat X.509 p\u00ebrmbajn\u00eb nj\u00eb \u00e7el\u00ebs publik dhe disa informacione rreth certifikat\u00ebs s\u00eb pronarit. K\u00ebto informacione lejojn\u00eb, nga ana tjet\u00ebr, t\u00eb verifikoj\u00eb integritetin e certifikat\u00ebs vet\u00eb, autenticitetin dhe pronarin e certifikat\u00ebs. Certifikatat X.509 kan\u00eb \u00e7el\u00ebsin p\u00ebrkat\u00ebs t\u00eb mbyllur, i cili zakonisht ruhet ndaras nga certifikata p\u00ebr arsye sigurie.<\/p>\n<p><\/p>\n<p>\u00c7el\u00ebsi SSH p\u00ebrmban vet\u00ebm \u00e7el\u00ebsin publik (\u00e7el\u00ebsi privat p\u00ebrkat\u00ebs ruhet ve\u00e7mas). Ai nuk p\u00ebrmban asnj\u00eb informacion mbi pronarin e \u00e7el\u00ebsit. Disa implementime t\u00eb SSH p\u00ebrdorin certifikata X.509 p\u00ebr autentikim, por n\u00eb t\u00eb v\u00ebrtet\u00eb ato nuk verifikojn\u00eb t\u00eb gjith\u00eb zinxhirin e certifikatave \u2014 p\u00ebrdoret vet\u00ebm \u00e7el\u00ebsi publik (gj\u00eb q\u00eb e b\u00ebn k\u00ebt\u00eb verifikim t\u00eb pap\u00ebrfunduar).<\/p>\n<p><\/p>\n<h1>P\u00ebrfundim<\/h1>\n<p><\/p>\n<p>Protokolli FTP, pa dyshim, vazhdon t\u00eb luaj\u00eb nj\u00eb rol t\u00eb r\u00ebnd\u00ebsish\u00ebm n\u00eb ruajtjen dhe shp\u00ebrndarjen e informacionit n\u00eb rrjet pavar\u00ebsisht nga mosha e tij e respektuar. Ai \u00ebsht\u00eb nj\u00eb protokoll i p\u00ebrshtatsh\u00ebm, multifunksional dhe i standardizuar. N\u00eb baz\u00ebn e tij jan\u00eb nd\u00ebrtuar shum\u00eb arkiva skedhesh, pa t\u00eb cilat puna teknike do t\u00eb ishte m\u00eb pak efektive. P\u00ebr m\u00eb tep\u00ebr, \u00ebsht\u00eb e leht\u00eb p\u00ebr t'u konfiguruar dhe ka programe server dhe klient\u00eb q\u00eb ekzistojn\u00eb p\u00ebr pothuajse t\u00eb gjitha platformat aktuale dhe ato jo shum\u00eb t\u00eb njohura.<\/p>\n<p><\/p>\n<p>Nga ana tjet\u00ebr, versionet e tij t\u00eb mbrojtura zgjidhin problemin e intimitetit t\u00eb t\u00eb dh\u00ebnave t\u00eb ruajtura dhe t\u00eb transmetuara n\u00eb bot\u00ebn moderne. T\u00eb dy protokollet e reja kan\u00eb p\u00ebrpar\u00ebsit\u00eb dhe disavantazhet e tyre dhe realizojn\u00eb role paksa t\u00eb ndryshme. N\u00eb ato fusha ku \u00ebsht\u00eb e nevojshme t\u00eb p\u00ebrdoret nj\u00eb arkiv skedesh, preferohet t\u00eb p\u00ebrdoret FTPS, ve\u00e7an\u00ebrisht n\u00ebse m\u00eb par\u00eb \u00ebsht\u00eb p\u00ebrdorur FTP klasik. SFTP \u00ebsht\u00eb m\u00eb pak i zakonsh\u00ebm p\u00ebr shkak t\u00eb moskompatibilitetit t\u00eb tij me protokollin e vjet\u00ebr, por \u00ebsht\u00eb m\u00eb i sigurt dhe ka m\u00eb shum\u00eb funksionalitet, pasi \u00ebsht\u00eb pjes\u00eb e sistemit t\u00eb menaxhimit n\u00eb distanc\u00eb.<\/p>\n<p><\/p>\n<h1>Lista e burimeve<\/h1>\n<p><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/topref.ru\/referat\/52883.html\">Referati \"Protokolli FTP. Informacione dhe ve\u00e7ori t\u00eb p\u00ebrgjithshme\"<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/studentlib.com\/referat-191865-protokoly_ssh_cmip_telnet.html\">Referati \"Protokollet SSH, CMIP, Telnet\"<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/works.doklad.ru\/view\/l4Ukh5_LHzk.html\">Raporti \"SSL\/TLS\"<\/a><\/noindex><\/li>\n<\/ul>\n<p>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/500438\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0438\u0441\u043b\u043e\u0432\u0438\u0435 \u0411\u0443\u043a\u0432\u0430\u043b\u044c\u043d\u043e \u043d\u0435\u0434\u0435\u043b\u044e \u043d\u0430\u0437\u0430\u0434 \u044f \u043f\u0438\u0441\u0430\u043b \u0440\u0435\u0444\u0435\u0440\u0430\u0442 \u043f\u043e \u043e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0432 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0435 \u0442\u0435\u043c\u0435 \u0438 \u0441\u0442\u043e\u043b\u043a\u043d\u0443\u043b\u0441\u044f \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e, \u0441\u043a\u0430\u0436\u0435\u043c \u0442\u0430\u043a, \u043f\u043e\u0437\u043d\u0430\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0432 \u0441\u0435\u0442\u0438 \u043d\u0435 \u0442\u0430\u043a \u0443\u0436 \u043c\u043d\u043e\u0433\u043e. \u0412 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0441\u0443\u0445\u0438\u0435 \u0444\u0430\u043a\u0442\u044b \u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u043f\u043e \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u044f \u0440\u0435\u0448\u0438\u043b \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0434\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0442\u0435\u043a\u0441\u0442 \u0438 \u0432\u044b\u043b\u043e\u0436\u0438\u0442\u044c \u0435\u0433\u043e \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0441\u0442\u0430\u0442\u044c\u0438. \u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 FTP FTP (File Transfer Protocol) \u2013 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":80501,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-80500","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0438\u0441\u043b\u043e\u0432\u0438\u0435 \u0411\u0443\u043a\u0432\u0430\u043b\u044c\u043d\u043e \u043d\u0435\u0434\u0435\u043b\u044e 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