{"id":37691,"date":"2019-10-31T22:19:07","date_gmt":"2019-10-31T19:19:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-powerdns-authoritative-server-4-2\/"},"modified":"2019-10-31T22:19:07","modified_gmt":"2019-10-31T19:19:07","slug":"vypusk-powerdns-authoritative-server-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-powerdns-authoritative-server-4-2","title":{"rendered":"Udgivelse af PowerDNS Authoritative Server 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/blog.powerdns.com\/2019\/08\/30\/powerdns-authoritative-server-4-2-0\/\">Har fundet sted<\/a><\/noindex> udgave af den autoritative DNS-server  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/auth.html\">PowerDNS Authoritative Server 4.2<\/a><\/noindex>, designet til at organisere levering af DNS-zoner. For <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/software.html\">data<\/a><\/noindex> projektudviklerne betjener PowerDNS Authoritative Server cirka 30% af det samlede antal dom\u00e6ner i Europa (hvis man kun betragter dom\u00e6ner med DNSSEC-underskrifter, s\u00e5 er det 90%). Koden er <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PowerDNS\/pdns\">distribueres<\/a><\/noindex> under GPLv2-licensen.<\/p>\n<p>PowerDNS Authoritative Server giver mulighed for at gemme oplysninger om dom\u00e6ner i forskellige databaser, herunder MySQL, PostgreSQL, SQLite3, Oracle og Microsoft SQL Server, samt i LDAP og almindelige tekstfiler i BIND-format. Responsen kan desuden filtreres (for eksempel for at afsk\u00e6re spam) eller omdirigeres ved hj\u00e6lp af egne behandlere skrevet i Lua, Java, Perl, Python, Ruby, C og C++. Blandt funktionerne er ogs\u00e5 v\u00e6rkt\u00f8jer til fjernoverv\u00e5gning af statistik, herunder via SNMP eller gennem Web API (til statistik og administration er der indbygget en http-server), \u00f8jeblikkelig genstart, en indbygget motor til tilslutning af behandlere i Lua-sprog og load balancing baseret p\u00e5 kundens geografiske placering.<\/p>\n<p>Vigtige <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/changelog\/4.2.html\">nyheder<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Muligheden for <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/lua-records\/index.html\">definitioner<\/a><\/noindex> af poster med h\u00e5ndtere i Lua-sprog, som muligg\u00f8r oprettelse af avancerede h\u00e5ndtere, der tager hensyn til AS, subnet, n\u00e6rhed til brugeren osv. Underst\u00f8ttelse af Lua-poster er implementeret for alle lagerbackends, herunder BIND og LMDB. For eksempel kan der nu angives til levering af data med baggrundskontrol af v\u00e6rternes tilg\u00e6ngelighed i zonekonfigurationen:\n<p>   @ IN LUA A<\/p>\n<li class=\"l\"> En ny v\u00e6rkt\u00f8j <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.powerdns.com\/authoritative\/manpages\/ixfrdist.1.html\">ixfrdist<\/a><\/noindex>, der muligg\u00f8r overf\u00f8rsel af zoner fra den autoritative server ved hj\u00e6lp af AXFR- og IXFR-foresp\u00f8rgsler, under hensyntagen til aktualiteten af de overf\u00f8rte data (for hvert dom\u00e6ne kontrolleres SOA-nummeret, og kun nye zoner indl\u00e6ses). V\u00e6rkt\u00f8jet muligg\u00f8r synkronisering af zoner p\u00e5 et meget stort antal sekund\u00e6re og rekursive servere uden at skabe en stor belastning p\u00e5 den prim\u00e6re server;\n<li class=\"l\"> Som led i forberedelserne til initiativet <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51102\">DNS flag day 2020<\/a><\/noindex>  er v\u00e6rdien af parameteren udp-truncation-threshold reduceret fra 1680 til 1232, hvilket sikrer besk\u00e6ring af UDP-svar til klienten, hvilket v\u00e6sentligt b\u00f8r reducere risikoen for tab af UDP-pakker. V\u00e6rdien 1232 er valgt, da den er maksimum, hvor st\u00f8rrelsen af DNS-svaret under hensyntagen til IPv6 falder inden for den minimale MTU-v\u00e6rdi (1280);\n<li class=\"l\"> En ny lagerbackend baseret p\u00e5 databasen <noindex><a rel=\"nofollow\" href=\"https:\/\/symas.com\/lmdb\/\">LMDB<\/a><\/noindex>. Backend er fuldt kompatibel med DNSSEC, kan bruges til master- og slave-zoner, og tilbyder h\u00f8jere ydeevne end de fleste andre backends. Lige f\u00f8r udgivelsen blev der tilf\u00f8jet en \u00e6ndring til koden, som forstyrrede driften af backend LMDB (slave zoner fungerer og indl\u00e6sning via pdnsutil virker, men kommandoer som  stoppede med at fungere. Problemerne planl\u00e6gges at blive l\u00f8st i den n\u00e6ste korrigerende udgivelse;\n<li class=\"l\"> Underst\u00f8ttelsen af den d\u00e5rligt dokumenterede funktion  er oph\u00f8rt, da den forstyrrede l\u00f8sning af nogle problemer. I overensstemmelse med kravene <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc8624\">RFC 8624<\/a><\/noindex> (GOST R 34.11-2012 er flyttet til kategorien ) er underst\u00f8ttelsen af GOST DS hashes og ECC-GOST digitale signaturer blevet oph\u00e6vet i DNSSEC.\n<\/ul>\n<p>Vi minder om, at PowerDNS er g\u00e5et over til en seks m\u00e5neders udviklingscyklus, hvorefter den n\u00e6ste v\u00e6sentlige version af PowerDNS Authoritative Server forventes i februar 2020. Opdateringer til v\u00e6sentlige udgivelser vil blive udarbejdet i l\u00f8bet af \u00e5ret, hvorefter der vil blive udgivet sikkerhedsopdateringer i yderligere seks m\u00e5neder. Dermed vil underst\u00f8ttelsen af PowerDNS Authoritative Server 4.2 vare indtil januar 2021. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51400\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0430\u0432\u0442\u043e\u0440\u0438\u0442\u0435\u0442\u043d\u043e\u0433\u043e (authoritative) DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 PowerDNS Authoritative Server 4.2, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u0442\u0434\u0430\u0447\u0438 DNS-\u0437\u043e\u043d. \u041f\u043e \u0434\u0430\u043d\u043d\u044b\u043c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0430, PowerDNS Authoritative Server \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e 30% \u0438\u0437 \u043e\u0431\u0449\u0435\u0433\u043e \u0447\u0438\u0441\u043b\u0430 \u0434\u043e\u043c\u0435\u043d\u043e\u0432 \u0432 \u0415\u0432\u0440\u043e\u043f\u0435 (\u0435\u0441\u043b\u0438 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043e\u043c\u0435\u043d\u044b \u0441 \u043f\u043e\u0434\u043f\u0438\u0441\u044f\u043c\u0438 DNSSEC, \u0442\u043e 90%). \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. PowerDNS Authoritative Server \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e \u0434\u043e\u043c\u0435\u043d\u0430\u0445 \u0432 [&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-37691","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 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