{"id":102637,"date":"2021-12-17T15:36:45","date_gmt":"2021-12-17T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2"},"modified":"2021-12-17T15:36:45","modified_gmt":"2021-12-17T13:36:45","slug":"vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","title":{"rendered":"Utg\u00e5van av tidssynkroniseringssystemet Chrony 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Utg\u00e5van av projektet Chrony 4.2 har publicerats, vilket erbjuder en oberoende implementation av NTP-klient och server, som anv\u00e4nds f\u00f6r att synkronisera exakt tid i olika Linux-distributioner, inklusive Fedora, Ubuntu, SUSE\/openSUSE och RHEL\/CentOS. Programmet st\u00f6der NTPv4-specifikationen (RFC 5905) och protokollet NTS (Network Time Security), som anv\u00e4nder element av offentlig nyckel-infrastruktur (PKI) och m\u00f6jligg\u00f6r anv\u00e4ndning av TLS och autentiserad kryptering AEAD (Authenticated Encryption with Associated Data) f\u00f6r att skydda tidsynkronisering kryptografiskt. Koden \u00e4r skriven i C och distribueras under GPLv2-licensen.    <\/p>\n<p>F\u00f6r att erh\u00e5lla data om exakt tid kan b\u00e5de externa NTP-servrar och referenstimmar anv\u00e4ndas, exempelvis baserade p\u00e5 GPS-mottagare, d\u00e4r noggrannheten kan uppn\u00e5s p\u00e5 niv\u00e5er av br\u00e5kdela av mikrosekunder. Projektet \u00e4r ursprungligen designat f\u00f6r att fungera korrekt i instabila milj\u00f6er, inklusive op\u00e5litliga n\u00e4tverk med avbrott, stora f\u00f6rdr\u00f6jningar och paketf\u00f6rluster, drift i <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/vps\/abuzoustojchivye-vps\/\"   title=\"virtuella maskiner\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4260\">virtuella maskiner<\/a> och system med varierande temperaturf\u00f6rh\u00e5llanden (temperaturen p\u00e5verkar h\u00e5rdvaruuret).    <\/p>\n<p>I den nya utg\u00e5van:  <\/p>\n<ul>\n<li class=\"l\"> Experimentellt st\u00f6d f\u00f6r ett f\u00e4lt som ut\u00f6kar funktionerna i NTPv4 har lagts till, vilket anv\u00e4nds f\u00f6r att \u00f6ka stabiliteten i synkroniseringen samt minska f\u00f6rdr\u00f6jningar och spridning av v\u00e4rden.\n<li class=\"l\"> Experimentellt st\u00f6d f\u00f6r att vidarebefordra NTP \u00f6ver PTP-protokollet (Precision Time Protocol) har lagts till.\n<li class=\"l\"> Implementationen av NTS har f\u00e5tt st\u00f6d f\u00f6r AES-CMAC-krypteringsalgoritmen och m\u00f6jligheten att anv\u00e4nda hashfunktioner fr\u00e5n GnuTLS.\n<li class=\"l\"> Arbetet med v\u00e4xell\u00e4ge har f\u00f6rb\u00e4ttrats <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/\"   title=\"servrar\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1621\">servrar<\/a> f\u00f6r \u00f6kad tillf\u00f6rlitlighet. Statistiken om v\u00e4xell\u00e4get har lagts till i rapporten serverstats.\n<li class=\"l\"> St\u00f6det f\u00f6r flera klienter bakom en adress\u00f6vers\u00e4ttare (NAT) har f\u00f6rb\u00e4ttrats.\n<li class=\"l\"> Filtren f\u00f6r systemanrop har uppdaterats baserat p\u00e5 seccomp-mekanismen.\n<li class=\"l\"> St\u00f6det f\u00f6r Solaris har \u00f6verg\u00e5tt till att anv\u00e4nda projektet Illumos som referens, som forts\u00e4tter utvecklingen av k\u00e4rnan, n\u00e4tverksstacken, filsystem, drivrutiner, bibliotek och en grundupps\u00e4ttning systemverktyg f\u00f6r OpenSolaris. F\u00f6r Illumos har m\u00f6jligheten att inaktivera k\u00e4rnjusteringen av systemuret implementerats.  <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56363\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Chrony 4.2, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \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, \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 \u0442\u043e\u0447\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Linux, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0432 Fedora, Ubuntu, SUSE\/openSUSE \u0438 RHEL\/CentOS. \u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e NTPv4 (RFC 5905) \u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b NTS (Network Time Security), \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0445 \u043a\u043b\u044e\u0447\u0435\u0439 (PKI) \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c TLS \u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 [&hellip;]<\/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-102637","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a 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