{"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\/sk\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","title":{"rendered":"Ubuntu 25.10 prech\u00e1dza predvolene na Chrony namiesto systemd-timesyncd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri Ubuntu Linux pl\u00e1nuj\u00fa prechod na predvolen\u00fa adapt\u00e1ciu projektu Chrony na synchroniz\u00e1ciu presn\u00e9ho \u010dasu vo v\u0161etk\u00fdch zostav\u00e1ch Ubuntu 25.10. Predt\u00fdm sa v Ubuntu pou\u017e\u00edval syst\u00e9m systemd-timesyncd, ktor\u00fd sa rozhodli nahradi\u0165 z d\u00f4vodu z\u00e1ujmu o zapojenie protokolu NTS (Network Time Security) na kryptografick\u00fa ochranu synchroniz\u00e1cie \u010dasu. <\/p>\n

Projekt Chrony poskytuje nez\u00e1visl\u00fa implement\u00e1ciu klienta a servera NTP, ktor\u00e1 u\u017e bola pou\u017eit\u00e1 na synchroniz\u00e1ciu presn\u00e9ho \u010dasu v Fedora, SUSE\/openSUSE a RHEL. NTS zaru\u010duje, \u017ee klient interaguje s cie\u013eov\u00fdm, nie podveden\u00fdm NTP serverom. Falo\u0161n\u00fd NTP server predstavuje riziko, preto\u017ee nastavenie nespr\u00e1vneho \u010dasu m\u00f4\u017ee by\u0165 vyu\u017eit\u00e9 na naru\u0161enie bezpe\u010dnosti in\u00fdch protokolov citliv\u00fdch na \u010das, ako s\u00fa TLS a DNSSEC. Zmena \u010dasu m\u00f4\u017ee vies\u0165 k nespr\u00e1vnej interpret\u00e1cii \u00fadajov t\u00fdkaj\u00facich sa platnosti certifik\u00e1tov. <\/p>\n

Protokol NTS pou\u017e\u00edva na organiz\u00e1ciu \u0161ifrovacieho komunika\u010dn\u00e9ho kan\u00e1la prvky infra\u0161trukt\u00fary verejn\u00fdch k\u013e\u00fa\u010dov (PKI) a umo\u017e\u0148uje aplikova\u0165 TLS a autentifikovan\u00e9 \u0161ifrovanie AEAD (Authenticated Encryption with Associated Data) na ochranu pou\u017e\u00edvate\u013eov pred \u00fatokmi, ktor\u00e9 imituj\u00fa NTP server. NTS zah\u0155\u0148a dva samostatn\u00e9 protokoly: NTS-KE (NTS Key Establishment), ktor\u00fd sa pou\u017e\u00edva na vykon\u00e1vanie po\u010diato\u010dnej autentifik\u00e1cie a s\u00fahlasu k\u013e\u00fa\u010dov nad TLS, a NTS-EF (NTS Extension Fields), ktor\u00fd zodpoved\u00e1 za \u0161ifrovanie a autentifik\u00e1ciu rel\u00e1cie synchroniz\u00e1cie \u010dasu. NTS prid\u00e1va do paketov NTP nieko\u013eko roz\u0161\u00edren\u00fdch pol\u00ed a uchov\u00e1va v\u0161etky inform\u00e1cie o stave iba na strane klienta, pri\u010dom pou\u017e\u00edva mechanizmus prenosu cookie. Na spracovanie pripojen\u00ed prostredn\u00edctvom protokolu NTS sa pou\u017e\u00edva sie\u0165ov\u00fd port 4460. <\/p>\n

Bal\u00edk Chrony je u\u017e zahrnut\u00fd v repozit\u00e1ri main a predvolene sa pou\u017e\u00edva v niektor\u00fdch verzi\u00e1ch Ubuntu pre cloudov\u00e9 syst\u00e9my. Nahr\u00e1dzanie systemd-timesyncd Chrony za\u010dne 2. j\u00fana. Zaradenie Chrony do zost\u00e1v prinesie \u010fal\u0161iu z\u00e1vislos\u0165 \u201elibedit2\u201c a zv\u00fd\u0161i ve\u013ekos\u0165 obrazu o 803 kB. Na nahradenie systemd-timesyncd Chrony v Ubuntu 25.04 je mo\u017en\u00e9 pou\u017ei\u0165 pr\u00edkaz \u201eapt-mark auto systemd-timesyncd && apt install chrony\u201c, a na n\u00e1vrat k systemd-timesyncd\u2014\u201eapt-mark auto chrony && apt install systemd-timesyncd\u201c.
\n
Zdroj: 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\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 prech\u00e1dza na Chrony namiesto systemd-timesyncd ako predvolen\u00e9 | ProHoster","description":"V\u00fdvoj\u00e1ri Ubuntu Linux pl\u00e1nuj\u00fa prechod na predvolen\u00fa adapt\u00e1ciu projektu Chrony na synchroniz\u00e1ciu presn\u00e9ho \u010dasu vo v\u0161etk\u00fdch zostav\u00e1ch Ubuntu 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