{"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\/pl\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","title":{"rendered":"Ubuntu 25.10 domy\u015blnie przechodzi na Chrony zamiast systemd-timesyncd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Deweloperzy Ubuntu Linux zaplanowali domy\u015bln\u0105 migracj\u0119 na u\u017cycie projektu Chrony do synchronizacji dok\u0142adnego czasu we wszystkich wersjach Ubuntu 25.10. Wcze\u015bniej w Ubuntu korzystano z us\u0142ugi systemd-timesyncd, kt\u00f3r\u0105 postanowiono zast\u0105pi\u0107 z uwagi na ch\u0119\u0107 wykorzystania protoko\u0142u NTS (Network Time Security) do kryptograficznej ochrony synchronizacji czasu. <\/p>\n

Projekt Chrony oferuje niezale\u017cn\u0105 implementacj\u0119 klienta i serwera NTP, ju\u017c stosowan\u0105 do synchronizacji dok\u0142adnego czasu w Fedora, SUSE\/openSUSE i RHEL. NTS zapewnia, \u017ce klient komunikacji odbywa si\u0119 z w\u0142a\u015bciwym, a nie sfa\u0142szowanym serwerem NTP. Sfa\u0142szowanie serwera NTP stwarza zagro\u017cenie, poniewa\u017c ustawienie niew\u0142a\u015bciwego czasu mo\u017ce by\u0107 wykorzystane do naruszenia bezpiecze\u0144stwa innych protoko\u0142\u00f3w opartych na czasie, takich jak TLS i DNSSEC. Zmiana czasu mo\u017ce prowadzi\u0107 do b\u0142\u0119dnej interpretacji danych dotycz\u0105cych dzia\u0142ania certyfikat\u00f3w. <\/p>\n

Protok\u00f3\u0142 NTS wykorzystuje elementy infrastruktury kluczy publicznych (PKI) do organizacji szyfrowanego kana\u0142u komunikacyjnego i pozwala na stosowanie TLS oraz uwierzytelnionego szyfrowania AEAD (Authenticated Encryption with Associated Data), aby chroni\u0107 u\u017cytkownik\u00f3w przed atakami imituj\u0105cymi serwer NTP. NTS obejmuje dwa odr\u0119bne protoko\u0142y: NTS-KE (NTS Key Establishment), u\u017cywany do obs\u0142ugi wst\u0119pnej autoryzacji i uzgadniania kluczy w warstwie TLS, oraz NTS-EF (NTS Extension Fields), kt\u00f3ry odpowiada za szyfrowanie i uwierzytelnianie sesji synchronizacji czasu. NTS dodaje do pakiet\u00f3w NTP kilka rozszerzonych p\u00f3l i przechowuje wszystkie informacje o stanie wy\u0142\u0105cznie po stronie klienta, korzystaj\u0105c z mechanizmu przesy\u0142ania cookie. Do obs\u0142ugi po\u0142\u0105cze\u0144 w protokole NTS u\u017cywany jest port sieciowy 4460. <\/p>\n

Pakiet Chrony jest ju\u017c cz\u0119\u015bci\u0105 repozytorium main i jest domy\u015blnie u\u017cywany w niekt\u00f3rych edycjach Ubuntu dla system\u00f3w chmurowych. Prace nad zast\u0105pieniem systemd-timesyncd przez Chrony rozpoczn\u0105 si\u0119 2 czerwca. W\u0142\u0105czenie Chrony do wyda\u0144 wi\u0105\u017ce si\u0119 z dodatkow\u0105 zale\u017cno\u015bci\u0105 \u201elibedit2\u201d i spowoduje zwi\u0119kszenie rozmiaru obrazu o 803 KB. Aby zast\u0105pi\u0107 systemd-timesyncd przez Chrony w Ubuntu 25.04, mo\u017cna u\u017cy\u0107 komendy \u201eapt-mark auto systemd-timesyncd && apt install chrony\u201d, a aby wr\u00f3ci\u0107 do systemd-timesyncd \u2014 \u201eapt-mark auto chrony && apt install systemd-timesyncd\u201d.
\n
\u0179r\u00f3d\u0142o: 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 domy\u015blnie przechodzi na Chrony zamiast systemd-timesyncd | ProHoster","description":"Deweloperzy Ubuntu Linux zaplanowali domy\u015bln\u0105 migracj\u0119 na u\u017cycie projektu Chrony do synchronizacji dok\u0142adnego czasu we wszystkich wersjach Ubuntu 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