{"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\/es\/blog\/news\/vypusk-sistemy-sinhronizaczii-tochnogo-vremeni-chrony-4-2","title":{"rendered":"Lanzamiento del sistema de sincronizaci\u00f3n de tiempo exacto Chrony 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha publicado el lanzamiento del proyecto Chrony 4.2, que ofrece una implementaci\u00f3n independiente del cliente y servidor NTP, utilizada para la sincronizaci\u00f3n de tiempo exacto en varias distribuciones de Linux, incluyendo Fedora, Ubuntu, SUSE\/openSUSE y RHEL\/CentOS. El programa soporta la especificaci\u00f3n NTPv4 (RFC 5905) y el protocolo NTS (Network Time Security), que utiliza elementos de infraestructura de clave p\u00fablica (PKI) y permite aplicar TLS y cifrado autenticado AEAD (Authenticated Encryption with Associated Data) para la protecci\u00f3n criptogr\u00e1fica de la sincronizaci\u00f3n del tiempo. El c\u00f3digo est\u00e1 escrito en C y se distribuye bajo la licencia GPLv2.    <\/p>\n<p>Para obtener datos sobre el tiempo exacto se pueden utilizar tanto servidores NTP externos como relojes de referencia, por ejemplo, basados en receptores GPS, con los cuales se puede alcanzar una precisi\u00f3n en el orden de fracciones de microsegundos. El proyecto fue dise\u00f1ado inicialmente para funcionar correctamente en entornos inestables, incluyendo redes poco fiables con desconexiones, altas latencias y p\u00e9rdidas de paquetes, funcionamiento en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/vps\/abuzoustojchivye-vps\/\"   title=\"m\u00e1quinas virtuales\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4260\">m\u00e1quinas virtuales<\/a> y sistemas con variaciones en la temperatura (la temperatura afecta el funcionamiento de los relojes de hardware).    <\/p>\n<p>En esta nueva versi\u00f3n:  <\/p>\n<ul>\n<li class=\"l\"> Se ha a\u00f1adido soporte experimental para un campo que ampl\u00eda las capacidades del protocolo NTPv4 y que se utiliza para mejorar la estabilidad de la sincronizaci\u00f3n, as\u00ed como para reducir latencias y la dispersi\u00f3n de valores.\n<li class=\"l\"> Se ha a\u00f1adido soporte experimental para pasar NTP sobre el protocolo PTP (Precision Time Protocol).\n<li class=\"l\"> Se ha a\u00f1adido a la implementaci\u00f3n de NTS soporte para el algoritmo de cifrado AES-CMAC y la posibilidad de utilizar funciones hash de GnuTLS.\n<li class=\"l\"> Se ha mejorado el funcionamiento del modo de alternancia <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1621\">servidores<\/a> para aumentar la fiabilidad. En el informe serverstats se ha a\u00f1adido estad\u00edstica sobre el modo de alternancia.\n<li class=\"l\"> Se ha mejorado el soporte para m\u00faltiples clientes detr\u00e1s de un traductor de direcciones (NAT).\n<li class=\"l\"> Se ha actualizado el filtro de llamadas del sistema basado en el mecanismo seccomp.\n<li class=\"l\"> El soporte para el sistema operativo Solaris se ha trasladado a utilizar el proyecto Illumos como referencia, que contin\u00faa el desarrollo del n\u00facleo, la pila de red, los sistemas de archivos, los controladores, las bibliotecas y el conjunto b\u00e1sico de utilidades del sistema de OpenSolaris. Para Illumos se ha implementado la desactivaci\u00f3n de la correcci\u00f3n por parte del n\u00facleo de los relojes del sistema.  <\/ul>\n<p>Fuente: <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 5.0.2 - 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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