{"id":103738,"date":"2022-04-08T15:36:50","date_gmt":"2022-04-08T13:36:50","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-openssh-9-0-s-perevodom-scp-na-protokol-sftp"},"modified":"2022-04-08T15:36:50","modified_gmt":"2022-04-08T13:36:50","slug":"reliz-openssh-9-0-s-perevodom-scp-na-protokol-sftp","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/reliz-openssh-9-0-s-perevodom-scp-na-protokol-sftp","title":{"rendered":"Megjelent az OpenSSH 9.0, \u00e1tkonvert\u00e1lva a scp-t az SFTP protokollra","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bemutat\u00e1sra ker\u00fclt az OpenSSH 9.0 kiad\u00e1sa, amely egy ny\u00edlt forr\u00e1sk\u00f3d\u00fa kliens \u00e9s szerver megold\u00e1s az SSH 2.0 \u00e9s SFTP protokollok m\u0171k\u00f6dtet\u00e9s\u00e9re. Az \u00faj verzi\u00f3ban az scp eszk\u00f6z alap\u00e9rtelmezetten \u00e1t lett \u00e1ll\u00edtva SFTP haszn\u00e1lat\u00e1ra a m\u00e1r elavult SCP\/RCP protokoll helyett.       <\/p>\n<p>Az SFTP-ben kisz\u00e1m\u00edthat\u00f3bb m\u00f3dszereket alkalmaznak a f\u00e1jlnevek kezel\u00e9s\u00e9re, \u00e9s nem haszn\u00e1lja a glob-t\u00edpus\u00fa mint\u00e1k shell \u00e1ltali feldolgoz\u00e1s\u00e1t a m\u00e1sik hoston, ami biztons\u00e1gi probl\u00e9m\u00e1kat okozhat. K\u00fcl\u00f6n\u00f6sen az SCP \u00e9s RCP alkalmaz\u00e1sa eset\u00e9n a szerver d\u00f6nti el, hogy mely f\u00e1jlokat \u00e9s mapp\u00e1kat k\u00fcldj\u00f6n a kliensnek, m\u00edg a kliens csak ellen\u0151rzi a visszakapott objektumnevek helyess\u00e9g\u00e9t, ami helyes ellen\u0151rz\u00e9s n\u00e9lk\u00fcl lehet\u0151v\u00e9 teszi <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-shicago\/\"   title=\"szerverhez\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2910\">szerverhez<\/a> m\u00e1s f\u00e1jlnevek \u00e1tvitel\u00e9t, amelyek elt\u00e9rnek a k\u00e9rt nevekt\u0151l.     <\/p>\n<p>Az SFTP protokoll mentes a megadott probl\u00e9m\u00e1kt\u00f3l, de nem t\u00e1mogatja a speci\u00e1lis \u00fatvonalak kib\u0151v\u00edt\u00e9s\u00e9t, mint p\u00e9ld\u00e1ul a \"~ \/\". E k\u00fcl\u00f6nbs\u00e9g megsz\u00fcntet\u00e9s\u00e9re az OpenSSH 8.7-t\u0151l kezd\u0151d\u0151en az SFTP-szerver implement\u00e1ci\u00f3j\u00e1n\u00e1l egy \u00faj protokollb\u0151v\u00edtm\u00e9ny, az \"expand-path@openssh.com\" ker\u00fcl bevezet\u00e9sre a ~ \/ \u00e9s ~user \/ \u00fatvonalak kib\u0151v\u00edt\u00e9s\u00e9re.     <\/p>\n<p>SFTP haszn\u00e1lata eset\u00e9n a felhaszn\u00e1l\u00f3k is tal\u00e1lkozhatnak inkompatibilit\u00e1ssal, amely a f\u00e1jlnevek kifejt\u00e9s\u00e9re vonatkoz\u00f3 speci\u00e1lis karakterek kett\u0151s elrejt\u00e9s\u00e9nek sz\u00fcks\u00e9gess\u00e9g\u00e9b\u0151l fakad az SCP \u00e9s RCP lek\u00e9rdez\u00e9sekben, hogy megakad\u00e1lyozz\u00e1k azok t\u00e1voli oldali \u00e9rtelmez\u00e9s\u00e9t. Az SFTP eset\u00e9ben ilyen elrejt\u00e9s nem sz\u00fcks\u00e9ges, \u00e9s a felesleges id\u00e9z\u0151jelek adat\u00e1tviteli hib\u00e1hoz vezethetnek. Ek\u00f6zben az OpenSSH fejleszt\u0151i lemondtak arr\u00f3l, hogy kiterjeszt\u00e9st adjanak hozz\u00e1 az scp viselked\u00e9s\u00e9nek megism\u00e9tl\u00e9s\u00e9re ebben az esetben, mivel a kett\u0151s elrejt\u00e9st olyan h\u00e1tr\u00e1nynak tekintik, amelynek megism\u00e9tl\u00e9se nem \u00e9rtelmes.    <\/p>\n<p>A leg\u00fajabb kiad\u00e1s egy\u00e9b v\u00e1ltoz\u00e1sai:  <\/p>\n<ul>\n<li class=\"l\"> Az ssh \u00e9s sshd alap\u00e9rtelmezetten aktiv\u00e1lva van a hibrid kulcscsere algoritmus az \"sntrup761x25519-sha512@openssh.com\" (ECDH \/ x25519 + NTRU Prime), amely ellen\u00e1ll a kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek \u00e1ltali kipr\u00f3b\u00e1l\u00e1snak, \u00e9s \u00f6tv\u00f6zve van az ECDH \/ x25519-el a NTRU Prime-ban esetlegesen felmer\u00fcl\u0151 probl\u00e9m\u00e1k leblokkol\u00e1s\u00e1ra. A kulcscsere algoritmusok list\u00e1j\u00e1ban, amely meghat\u00e1rozza a kulcsok cser\u00e9j\u00e9nek sorrendj\u00e9t, a fent eml\u00edtett algoritmus most az els\u0151 helyen \u00e1ll, \u00e9s priorit\u00e1st \u00e9lvez az ECDH \u00e9s DH algoritmusokkal szemben.\n<p>A kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek m\u00e9g nem \u00e9rt\u00e9k el azt a szintet, amely lehet\u0151v\u00e9 tenn\u00e9 a hagyom\u00e1nyos kulcsok felt\u00f6r\u00e9s\u00e9t, de a hibrid v\u00e9delem alkalmaz\u00e1sa megv\u00e9di a felhaszn\u00e1l\u00f3kat a megfigyelt SSH-munkamenetek meg\u0151rz\u00e9s\u00e9vel kapcsolatos t\u00e1mad\u00e1sokt\u00f3l, abb\u00f3l a megfontol\u00e1sb\u00f3l, hogy ezeket a j\u00f6v\u0151ben, a sz\u00fcks\u00e9ges kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek megjelen\u00e9s\u00e9vel dek\u00f3dolj\u00e1k.    <\/p>\n<li class=\"l\"> A sftp-serverhez hozz\u00e1 lett adva a \"copy-data\" b\u0151v\u00edtm\u00e9ny, amely lehet\u0151v\u00e9 teszi az adatok m\u00e1sol\u00e1s\u00e1t a szerver oldal\u00e1n, an\u00e9lk\u00fcl, hogy azokat \u00e1tmenetileg a kliensnek kellene k\u00fcldeni, ha az eredeti \u00e9s a c\u00e9lf\u00e1jl ugyanazon a helyen van. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-newyork\/\"   title=\"szerveren\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2706\">szerveren<\/a>.\n<li class=\"l\"> A sftp seg\u00e9dprogramhoz hozz\u00e1adva lett a \"cp\" parancs, amely lehet\u0151v\u00e9 teszi a kliens sz\u00e1m\u00e1ra, hogy f\u00e1jlokat kezdem\u00e9nyezzen a szerver oldal\u00e1n t\u00f6rt\u00e9n\u0151 m\u00e1sol\u00e1sra.    <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56991\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.0, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c SSH 2.0 \u0438 SFTP. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0442\u0438\u043b\u0438\u0442\u0430 scp \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0435\u043d\u0430 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 SFTP \u0432\u043c\u0435\u0441\u0442\u043e \u0443\u0441\u0442\u0430\u0440\u0435\u0432\u0448\u0435\u0433\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SCP\/RCP. \u0412 SFTP \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u043a\u0430\u0437\u0443\u0435\u043c\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438\u043c\u0451\u043d \u0438 \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 glob-\u0448\u0430\u0431\u043b\u043e\u043d\u043e\u0432 \u0432 \u0438\u043c\u0435\u043d\u0430\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 \u0447\u0435\u0440\u0435\u0437 shell \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u0445\u043e\u0441\u0442\u0430, \u0441\u043e\u0437\u0434\u0430\u044e\u0449\u0430\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103738","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.0, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c SSH 2.0 \u0438 SFTP.\" \/>\n\t<meta name=\"robots\" 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