{"id":96270,"date":"2020-10-10T01:42:13","date_gmt":"2020-10-09T23:42:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts"},"modified":"2020-10-10T01:42:13","modified_gmt":"2020-10-09T23:42:13","slug":"vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-ntp-serverov-ntpsec-1-2-0-i-shrony-4-0-s-podderzhkoj-zashhishhyonnogo-protokola-nts","title":{"rendered":"Utg\u00e5van av NTP-servrar NTPsec 1.2.0 och Chrony 4.0 med st\u00f6d f\u00f6r den s\u00e4krade protokoll NTS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>IETF (Internet Engineering Task Force), som arbetar med utvecklingen av internetprotokoll och arkitektur, <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.cloudflare.com\/nts-is-now-rfc\/\">har slutf\u00f6rt<\/a><\/noindex> skapandet av RFC f\u00f6r protokollet NTS (Network Time Security) och publicerat en relaterad specifikation med identifieraren <noindex><a rel=\"nofollow\" href=\"https:\/\/www.rfc-editor.org\/info\/rfc8915\">RFC 8915<\/a><\/noindex>. RFC \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u0441\u0442\u0430\u0442\u0443\u0441 &#171;\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430&#187;, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043d\u0430\u0447\u043d\u0451\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044e RFC \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 (Draft Standard), \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0438 \u0443\u0447\u0451\u0442 \u0432\u0441\u0435\u0445 \u0432\u044b\u0441\u043a\u0430\u0437\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043c\u0435\u0447\u0430\u043d\u0438\u0439. <\/p>\n<p>Standardiseringen av NTS \u00e4r ett viktigt steg f\u00f6r att \u00f6ka s\u00e4kerheten f\u00f6r tj\u00e4nster f\u00f6r synkronisering av exakt tid och skydda anv\u00e4ndare fr\u00e5n attacker som simulerar NTP-servrar som klienten ansluter till. Manipulationer av illasinnade akt\u00f6rer kopplade till inst\u00e4llningen av felaktig tid kan anv\u00e4ndas f\u00f6r att \u00e4ventyra s\u00e4kerheten f\u00f6r andra tidsrelaterade protokoll, s\u00e5som TLS. Till exempel kan en tids\u00e4ndring leda till felaktig tolkning av data ang\u00e5ende TLS-certifikatens legitimitet. Tidigare har NTP och symmetrisk kryptering av kommunikationskanaler inte kunnat garantera att klienten interagerar med den avsedda snarare \u00e4n en falsk NTP-server, och autentisering via nycklar har inte blivit utbredd d\u00e5 det \u00e4r f\u00f6r komplicerat att konfigurera.<\/p>\n<p>NTS anv\u00e4nder element fr\u00e5n offentliga nyckelinfrastruktur (PKI) och till\u00e5ter anv\u00e4ndning av TLS och autentiserad kryptering AEAD (Authenticated Encryption with Associated Data) f\u00f6r kryptografiskt skydd av interaktionen mellan klienten och servern via NTP (Network Time Protocol). NTS inneh\u00e5ller tv\u00e5 separata protokoll: NTS-KE (NTS Nyckel Etablering f\u00f6r hantering av inledande autentisering och nyckelsynkronisering \u00f6ver TLS) och NTS-EF (NTS Extension Fields, ansvarig f\u00f6r kryptering och autentisering av tidsynkroniseringssessionen). NTS l\u00e4gger till flera ut\u00f6kade f\u00e4lt i NTP-paket och lagrar all statusinformation endast p\u00e5 klientsidan, med hj\u00e4lp av en cookie-\u00f6verf\u00f6ringsmekanism. En n\u00e4tverksport 4460 \u00e4r tilldelad f\u00f6r att hantera anslutningar via NTS-protokollet.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/blog-cloudflare-com-assets.storage.googleapis.com\/2020\/10\/pasted-image-0.png\"><img decoding=\"async\" alt=\"Utg\u00e5van av NTP-servrar NTPsec 1.2.0 och Chrony 4.0 med st\u00f6d f\u00f6r den s\u00e4krade protokoll NTS\" src=\"\/wp-content\/uploads\/2020\/10\/f97d82315d5964dc0cbbc22d95586ec3.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>De f\u00f6rsta implementeringarna av standardiserat NTS f\u00f6reslogs nyligen i publicerade versioner av <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.ntpsec.org\/2020\/10\/06\/version-1.2.0.html\">NTPsec 1.2.0<\/a><\/noindex> och <noindex><a rel=\"nofollow\" href=\"https:\/\/listengine.tuxfamily.org\/chrony.tuxfamily.org\/chrony-announce\/2020\/10\/msg00000.html\">\u0421hrony 4.0<\/a><\/noindex>. <noindex><a rel=\"nofollow\" href=\"https:\/\/chrony.tuxfamily.org\/\">\u0421hrony<\/a><\/noindex> tillhandah\u00e5ller en oberoende implementation av NTP-klient och server som anv\u00e4nds f\u00f6r att synkronisera exakt tid \u00f6ver olika distributioner av Linux, inklusive Fedora, Ubuntu, SUSE\/openSUSE och RHEL\/CentOS. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.ntpsec.org\/\">NTPsec<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47362\">utvecklas<\/a><\/noindex> Under ledning av Eric Raymond \u00e4r det en fork av den referensimplementation av NTPv4-protokollet (NTP Classic 4.3.34) som fokuserar p\u00e5 att omarbeta kodbasen f\u00f6r att \u00f6ka s\u00e4kerheten (undantagen f\u00f6r gammal kod, metoder f\u00f6r att f\u00f6rhindra attacker och skyddade funktioner f\u00f6r hantering av minne och str\u00e4ngar har implementerats).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>K\u00e4lla: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53862\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 RFC \u0434\u043b\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 NTS (Network Time Security) \u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u043d\u0438\u043c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e \u043f\u043e\u0434 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u043c RFC 8915. RFC \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u0441\u0442\u0430\u0442\u0443\u0441 &#171;\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430&#187;, \u043f\u043e\u0441\u043b\u0435 \u0447\u0435\u0433\u043e \u043d\u0430\u0447\u043d\u0451\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044e RFC \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0447\u0435\u0440\u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 (Draft Standard), \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0438 \u0443\u0447\u0451\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":96271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-96270","post","type-post","status-publish","format-standard","has-post-thumbnail","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=\"\u041a\u043e\u043c\u0438\u0442\u0435\u0442 IETF (Internet Engineering Task Force), \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435\u043c \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 \u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430, \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b.\" \/>\n\t<meta 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