{"id":114258,"date":"2024-03-12T00:25:48","date_gmt":"2024-03-11T22:25:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-openssh-9-7"},"modified":"2024-03-12T00:25:48","modified_gmt":"2024-03-11T22:25:48","slug":"reliz-openssh-9-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/reliz-openssh-9-7","title":{"rendered":"Az OpenSSH 9.7 kiad\u00e1sa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelent az OpenSSH 9.7 verzi\u00f3ja, amely az SSH 2.0 \u00e9s SFTP protokollokhoz k\u00e9sz\u00fclt kliens \u00e9s szerver ny\u00edlt forr\u00e1sk\u00f3d\u00fa megval\u00f3s\u00edt\u00e1sa. Az \u00faj verzi\u00f3ban megkezd\u0151dtek a m\u00f3dos\u00edt\u00e1sok, amelyek a DSA algoritmuson alapul\u00f3 kulcsok j\u00f6v\u0151beli t\u00e1mogat\u00e1s\u00e1nak megsz\u00fcntet\u00e9s\u00e9t el\u0151zik meg. Az OpenSSH 9.7-ben lehet\u0151s\u00e9g van a DSA letilt\u00e1s\u00e1ra a ford\u00edt\u00e1si folyamatban, de az alap\u00e9rtelmezett ford\u00edt\u00e1s DSA t\u00e1mogat\u00e1ssal maradt. A k\u00f6vetkez\u0151 kiad\u00e1sra, amely j\u00fanusban v\u00e1rhat\u00f3, az alap\u00e9rtelmezett ford\u00edt\u00e1si m\u00f3dot \u00fagy m\u00f3dos\u00edtj\u00e1k, hogy a DSA alap\u00e9rtelmez\u00e9s szerint ki van kapcsolva, \u00e9s 2025 elej\u00e9re a DSA megval\u00f3s\u00edt\u00e1st elt\u00e1vol\u00edtj\u00e1k a k\u00f3d b\u00e1zisb\u00f3l. <\/p>\n

Alap\u00e9rtelmez\u00e9s szerint a DSA kulcsok haszn\u00e1lat\u00e1t 2015-ben megsz\u00fcntett\u00e9k, azonban a DSA t\u00e1mogat\u00e1s\u00e1t alap\u00e9rtelmezetten t\u00e1mogat\u00f3 k\u00f3d volt, amely lehet\u0151v\u00e9 tette a DSA vissza\u00e1ll\u00edt\u00e1s\u00e1t a be\u00e1ll\u00edt\u00e1sokon kereszt\u00fcl. \u00c9rdekes m\u00f3don a DSA algoritmus az egyetlen k\u00f6telez\u0151en megval\u00f3s\u00edtand\u00f3 algoritmus az SSHv2 protokollban. Ezt a k\u00f6vetelm\u00e9nyt az\u00e9rt vezett\u00e9k be, mert az SSHv2 protokoll l\u00e9trehoz\u00e1sa \u00e9s j\u00f3v\u00e1hagy\u00e1sa idej\u00e9n minden alternat\u00edv algoritmust szabadalmak v\u00e9dtek. Az\u00f3ta a helyzet megv\u00e1ltozott, a RSA-val kapcsolatos szabadalmak megsz\u0171ntek, bevezet\u00e9sre ker\u00fclt az ECDSA algoritmus, amely jelent\u0151sen megel\u0151zi a DSA-t teljes\u00edtm\u00e9nyben \u00e9s biztons\u00e1gban, valamint az EdDSA, amely biztons\u00e1gosabb \u00e9s gyorsabb, mint az ECDSA. <\/p>\n

A DSA t\u00e1mogat\u00e1s\u00e1nak fenntart\u00e1s\u00e1ra egyetlen indokk\u00e9nt a r\u00e9gi eszk\u00f6z\u00f6kkel val\u00f3 kompatibilit\u00e1s meg\u0151rz\u00e9se maradt. A jelenlegi k\u00f6rnyezetben a DSA biztons\u00e1gtalan algoritmus\u00e1nak fenntart\u00e1s\u00e1nak k\u00f6lts\u00e9gei nem indokoltak, \u00e9s annak elt\u00e1vol\u00edt\u00e1sa \u00f6szt\u00f6n\u00f6zni fogja a DSA t\u00e1mogat\u00e1s\u00e1nak megsz\u00fcntet\u00e9s\u00e9t m\u00e1s SSH megval\u00f3s\u00edt\u00e1sokban \u00e9s kriptogr\u00e1fiai k\u00f6nyvt\u00e1rakban. <\/p>\n

A DSA-val kapcsolatos v\u00e1ltoz\u00e1sok mellett az \u00faj kiad\u00e1s egy \u00fajf\u00e9le id\u0151t\u00fall\u00e9p\u00e9st javasol az ssh \u00e9s sshd eset\u00e9ben, amely a ChannelTimeout utas\u00edt\u00e1sban a 'global' \u00e9rt\u00e9k megad\u00e1s\u00e1val kapcsolhat\u00f3 be. Az \u00faj m\u00f3dban az OpenSSH nyomon k\u00f6veti az \u00f6sszes nyitott csatorn\u00e1t, \u00e9s egyszerre z\u00e1rja be \u0151ket, ha az \u00f6sszes csatorn\u00e1n a megadott id\u0151intervallumban nem volt forgalom. P\u00e9ld\u00e1ul, amikor a gazdag\u00e9phez egyszerre nyitva vannak csatorn\u00e1k egy SSH-munkamenet \u00e9s az x11 \u00e1tir\u00e1ny\u00edt\u00e1s sz\u00e1m\u00e1ra, az \u00faj m\u00f3d lehet\u0151v\u00e9 teszi, hogy egyszerre z\u00e1rjuk be mindk\u00e9t csatorn\u00e1t, ha inakt\u00edvak, ahelyett, hogy k\u00fcl\u00f6n-k\u00fcl\u00f6n figyeln\u00e9nk az id\u0151t\u00fall\u00e9p\u00e9seket minden csatorn\u00e1ra. A v\u00e1ltoz\u00e1sok k\u00f6z\u00f6tt \u00e9szlelhet\u0151 a PuTTY projekttel val\u00f3 kompatibilit\u00e1si tesztel\u00e9s jelent\u0151s javul\u00e1sa is.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.7, \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 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043d\u0430\u0447\u0430\u043b\u043e\u0441\u044c \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u043f\u0440\u0435\u0434\u0448\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0431\u0443\u0434\u0443\u0449\u0435\u043c\u0443 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u043a\u043b\u044e\u0447\u0435\u0439 \u043d\u0430 \u0431\u0430\u0437\u0435 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 DSA. \u0412 OpenSSH 9.7 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u043e\u043f\u0446\u0438\u044f \u0434\u043b\u044f \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f DSA \u043d\u0430 \u0441\u0442\u0430\u0434\u0438\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438, \u043d\u043e \u0441\u0431\u043e\u0440\u043a\u0430 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0441 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 DSA \u043f\u043e\u043a\u0430 \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0430. \u0412 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435, […]<\/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-114258","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47OpenSSH 9.7 kiad\u00e1sa | ProHoster","description":"Megjelent az OpenSSH 9.7 verzi\u00f3ja, amely az SSH 2.0 \u00e9s SFTP protokollokhoz k\u00e9sz\u00fclt kliens \u00e9s szerver ny\u00edlt forr\u00e1sk\u00f3d\u00fa 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\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 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