{"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\/da\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","title":{"rendered":"Ubuntu 25.10 skifter som standard til Chrony i stedet for systemd-timesyncd","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Udviklerne af Ubuntu Linux har planlagt at skifte til at bruge Chrony-projektet som standard til synkronisering af n\u00f8jagtig tid i alle versioner af Ubuntu 25.10. Tidligere brugte Ubuntu tjenesten systemd-timesyncd, som nu vil blive erstattet for at kunne implementere protokol NTS (Network Time Security) til kryptografisk beskyttelse af tidssynkronisering. <\/p>\n

Chrony-projektet tilbyder en uafh\u00e6ngig implementering af NTP-klienten og serveren, som allerede anvendes til synkronisering af n\u00f8jagtig tid i Fedora, SUSE\/openSUSE og RHEL. NTS g\u00f8r det muligt at sikre, at klienten interagerer med den rigtige, og ikke en falsk NTP-server. En falsk NTP-server udg\u00f8r en risiko, da det forkerte tidspunkt kan bruges til at kompromittere andre tidsafh\u00e6ngige protokoller som TLS og DNSSEC. \u00c6ndring af tiden kan f\u00f8re til en forkert fortolkning af data om certifikataktiviteter. <\/p>\n

NTS-protokollen bruger elementer fra offentlige n\u00f8gleinfrastrukturer (PKI) til at etablere en krypteret kommunikationskanal og tillader brug af TLS og autentificeret kryptering AEAD (Authenticated Encryption with Associated Data) til at beskytte brugere mod angreb, der simulerer en NTP-server. NTS inkluderer to separate protokoller: NTS-KE (NTS Key Establishment), der bruges til at h\u00e5ndtere den indledende autentificering og n\u00f8gleforhandling over TLS, og NTS-EF (NTS Extension Fields), som ansvarer for kryptering og autentificering af tidsynkroniseringssessionen. NTS tilf\u00f8jer flere udvidelsesfelter til NTP-pakkerne og gemmer al statusinformation kun p\u00e5 klientsiden ved hj\u00e6lp af en cookie-overf\u00f8rselsmekanisme. Netv\u00e6rksport 4460 bruges til at h\u00e5ndtere forbindelser ved hj\u00e6lp af NTS-protokollen. <\/p>\n

Chrony-pakken er allerede en del af main-repositoriet og bruges som standard i nogle udgaver af Ubuntu til cloud-systemer. Arbejdet med at erstatte systemd-timesyncd med Chrony starter den 2. juni. Inkluderingen af Chrony i builds vil medf\u00f8re en ekstra afh\u00e6ngighed af \"libedit2\" og vil \u00f8ge billedst\u00f8rrelsen med 803 KB. For at erstatte systemd-timesyncd med Chrony i Ubuntu 25.04 kan du bruge kommandoen \"apt-mark auto systemd-timesyncd && apt install chrony\", og for at g\u00e5 tilbage til systemd-timesyncd - \"apt-mark auto chrony && apt install systemd-timesyncd\".
\n
Kilde: 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 skifter som standard til Chrony i stedet for systemd-timesyncd | ProHoster","description":"Udviklerne af Ubuntu Linux har besluttet at skifte til brugen af Chrony som standard til synkronisering af pr\u00e6cise tid i alle versioner af Ubuntu 25.10.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Ubuntu 25.10 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0438\u0442 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043d\u0430 Chrony \u0432\u043c\u0435\u0441\u0442\u043e systemd-timesyncd | ProHoster","og:description":"\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.","og:url":"https:\/\/prohoster.info\/da\/blog\/news\/ubuntu-25-10-perehodit-po-umolchaniyu-na-chrony-vmesto-systemd-timesyncd","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2025-05-23T13:05:07+00:00","article:modified_time":"2025-05-23T13:05:07+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"125518","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-23 12:58:15","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-23 12:58:15","updated":"2026-01-23 12:58:15","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts\/125518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/comments?post=125518"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts\/125518\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/media?parent=125518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/categories?post=125518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/tags?post=125518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}