{"id":125518,"date":"2025-05-23T15:05:07","date_gmt":"2025-05-23T13:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd"},"modified":"2025-05-23T15:05:07","modified_gmt":"2025-05-23T13:05:07","slug":"ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","title":{"rendered":"Ubuntu 25.10 l\u00e4heb vaikimisi \u00fcle Chronyle, mitte systemd-timesyncd-ile","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ubuntu Linuxi arendajad on planeerinud vaikimisi \u00fclemineku Chrony projekti kasutamisele t\u00e4pse aja s\u00fcnkroonimiseks k\u00f5igis Ubuntu 25.10 versioonides. Varem kasutati Ubuntu-s teenust systemd-timesyncd, mille asendamine on otsustatud, et rakendada NTS (Network Time Security) protokolli aja s\u00fcnkroonimise kr\u00fcptograafiliseks kaitseks. <\/p>\n

Chrony projekt pakub s\u00f5ltumatut NTP kliendi ja serveri teostust, mida juba kasutatakse t\u00e4pse aja s\u00fcnkroonimiseks Fedora, SUSE\/openSUSE ja RHEL s\u00fcsteemides. NTS tagab, et klient suhtleb sihtotstarbelise, mitte v\u00f5ltsitud NTP serveriga. NTP serveri v\u00f5ltsimine kujutab ohtu, kuna vale aja seadmine v\u00f5ib h\u00e4irida teiste ajast s\u00f5ltuvate protokollide, nagu TLS ja DNSSEC, turvalisust. Aja muutmine v\u00f5ib viia vale t\u00f5lgendamiseni sertifikaatide vigade kohta. <\/p>\n

NTS protokoll kasutab kr\u00fcpteeritud sidekanali loomiseks avatud v\u00f5tme infrastruktuuri (PKI) ja v\u00f5imaldab rakendada TLS-i ja autenditud kr\u00fcptimist AEAD (Authenticated Encryption with Associated Data), et kaitsta kasutajaid NTP serverit j\u00e4ljendavate r\u00fcnnakute eest. NTS koosneb kahest eraldi protokollist: NTS-KE (NTS Key Establishment), mida kasutatakse algse autentimise ja TLS-i peal v\u00f5tmete koosk\u00f5lastamiseks, ning NTS-EF (NTS Extension Fields), mis vastutab aja s\u00fcnkroonimise sessiooni kr\u00fcptimise ja autentimise eest. NTS lisab NTP pakettidesse mitmeid laiendatud v\u00e4lju ja hoiab kogu oleku teabe ainult kliendi poolel, kasutades k\u00fcpsise edastamise mehhanismi. NTS protokolli \u00fchenduste t\u00f6\u00f6tlemiseks kasutatakse v\u00f5rgupordi 4460. <\/p>\n

Chrony pakett kuulub juba main reposse ja seda kasutatakse vaikimisi teatud Ubuntu v\u00e4ljaannetes pilves\u00fcsteemide jaoks. T\u00f6\u00f6 systemd-timesyncd asendamiseks Chronyga algab 2. juunil. Chrony lisamine kogumitesse toob endaga kaasa t\u00e4iendava s\u00f5ltuvuse «libedit2» ja suurendab pildi suurust 803 KB v\u00f5rra. Systemd-timesyncd asendamiseks Chronyga Ubuntu 25.04-s saab kasutada k\u00e4sku «apt-mark auto systemd-timesyncd && apt install chrony», ning tagasi systemd-timesyncd peale naasmiseks — «apt-mark auto chrony && apt install systemd-timesyncd».
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Ubuntu Linux \u043d\u0430\u043c\u0435\u0442\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434 \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 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Chrony \u0434\u043b\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432\u043e \u0432\u0441\u0435\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 Ubuntu 25.10. \u0420\u0430\u043d\u0435\u0435 \u0432 Ubuntu \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043b\u0441\u044f \u0441\u0435\u0440\u0432\u0438\u0441 systemd-timesyncd, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0440\u0435\u0448\u0435\u043d\u043e \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u0438\u0437-\u0437\u0430 \u0436\u0435\u043b\u0430\u043d\u0438\u044f \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b NTS (Network Time Security) \u0434\u043b\u044f \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u0440\u0435\u043c\u0435\u043d\u0438. \u041f\u0440\u043e\u0435\u043a\u0442 Chrony \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 NTP, \u0443\u0436\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u0443\u044e \u0434\u043b\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0430\u0446\u0438\u0438 […]<\/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-125518","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\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\udd47Ubuntu 25.10 l\u00e4heb vaikimisi \u00fcle Chrony'le systemd-timesyncd asemel | ProHoster","description":"Ubuntu Linuxi arendajad on planeerinud vaikimisi \u00fclemineku Chrony projekti kasutamisele t\u00e4pse aja s\u00fcnkroonimiseks k\u00f5igis Ubuntu 25.10 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