{"id":72951,"date":"2020-03-06T02:42:09","date_gmt":"2020-03-05T23:42:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3"},"modified":"2020-03-06T02:42:09","modified_gmt":"2020-03-05T23:42:09","slug":"reliz-powerdns-recursor-4-3-i-knotdns-2-9-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3","title":{"rendered":"Wydanie PowerDNS Recursor 4.3 i KnotDNS 2.9.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/blog.powerdns.com\/2020\/03\/03\/powerdns-recursor-4-3-0-released\/\">Zdarzy\u0142o si\u0119<\/a><\/noindex> premiera serwera DNS z pami\u0119ci\u0105 podr\u0119czn\u0105 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/recursor.html\">PowerDNS Recursor 4.3<\/a><\/noindex>, odpowiedzialnego za rekurencyjne przekszta\u0142canie nazw. PowerDNS Recursor zbudowany jest na tej samej bazie kodowej co PowerDNS Authoritative Server, ale serwery DNS rekurencyjne i autorytatywne PowerDNS rozwijane s\u0105 w ramach r\u00f3\u017cnych cykli rozwoju i wydawane w formie oddzielnych produkt\u00f3w. Kod projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PowerDNS\/pdns\">rozpowszechniany<\/a><\/noindex> na licencji GPLv2. <\/p>\n<p>Serwer zapewnia narz\u0119dzia do zdalnego zbierania statystyk, obs\u0142uguje natychmiastowe ponowne uruchamianie, ma wbudowany silnik do \u0142\u0105czenia przetwornik\u00f3w w j\u0119zyku Lua, pe\u0142n\u0105 obs\u0142ug\u0119 DNSSEC, DNS64, RPZ (Response Policy Zones) oraz pozwala na w\u0142\u0105czanie czarnych list. Istnieje mo\u017cliwo\u015b\u0107 zapisywania wynik\u00f3w rozwi\u0105zywania w postaci plik\u00f3w strefowych BIND. W celu zapewnienia wysokiej wydajno\u015bci stosowane s\u0105 nowoczesne mechanizmy multiplexowania po\u0142\u0105cze\u0144 w systemach FreeBSD, Linux i Solaris (kqueue, epoll, \/dev\/poll), a tak\u017ce wysoko wydajny parser pakiet\u00f3w DNS, zdolny do obs\u0142ugi dziesi\u0105tek tysi\u0119cy r\u00f3wnoleg\u0142ych zapyta\u0144. <\/p>\n<p>W nowej wersji:<\/p>\n<ul>\n<li class=\"l\"> Aby zapobiec wyciekom informacji o \u017c\u0105danej domenie i zwi\u0119kszy\u0107 prywatno\u015b\u0107, domy\u015blnie w\u0142\u0105czony jest mechanizm <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/settings.html#qname-minimization\">Minimalizacja QNAME<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/rfc7816\/\">RFC-7816<\/a><\/noindex>), dzia\u0142aj\u0105cy w trybie &#171;relaxed&#187;. Esencja mechanizmu polega na tym, \u017ce resolver nie wspomina pe\u0142nej nazwy poszukiwanego hosta w swoich zapytaniach do nadrz\u0119dnego serwera nazw. Na przyk\u0142ad, przy okre\u015blaniu adresu dla hosta foo.bar.baz.com resolver wy\u015ble do autorytatywnego serwera dla strefy &#171;.com&#187; zapytanie &#171;QTYPE=NS,QNAME=baz.com&#187;, nie wspominaj\u0105c &#171;foo.bar&#187;. W obecnej formie realizowana jest praca w trybie &#171;relaxed&#187;.\n<li class=\"l\"> Wprowadzono mo\u017cliwo\u015b\u0107 rejestrowania wychodz\u0105cych zapyta\u0144 do autorytatywnego serwera oraz odpowiedzi na nie w formacie dnstap (do wykorzystania wymagana jest wersja z opcj\u0105 &#171;&#8212;enable-dnstap&#187;.\n<li class=\"l\"> Zapewniono r\u00f3wnoczesne przetwarzanie wielu przychodz\u0105cych zapyta\u0144 przesy\u0142anych przez po\u0142\u0105czenie TCP, z wydawaniem wynik\u00f3w w miar\u0119 ich gotowo\u015bci, a nie w kolejno\u015bci, w jakiej zapytania wp\u0142yn\u0119\u0142y. Limit r\u00f3wnoczesnych zapyta\u0144 okre\u015bla ustawienie &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/settings.html#max-concurrent-requests-per-tcp-connection\">max-concurrent-requests-per-tcp-connection<\/a><\/noindex>&#171;.\n<li class=\"l\"> Zaimplementowano technik\u0119 \u015bledzenia nowych domen <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/nod_udr.html\">NOD<\/a><\/noindex> (Nowo obserwowane domeny), kt\u00f3re mog\u0105 by\u0107 u\u017cywane do identyfikacji podejrzanych domen lub domen zwi\u0105zanych z dzia\u0142alno\u015bci\u0105 z\u0142o\u015bliw\u0105, tak\u0105 jak rozpowszechnianie z\u0142o\u015bliwego oprogramowania, udzia\u0142 w phishingu i wykorzystanie do zarz\u0105dzania botnetami. Metoda opiera si\u0119 na identyfikacji domen, do kt\u00f3rych wcze\u015bniej nie by\u0142o odwo\u0142a\u0144, oraz analizie tych nowych domen. Zamiast \u015bledzi\u0107 nowe domeny w oparciu o pe\u0142n\u0105 baz\u0119 wszystkich kiedykolwiek przegl\u0105danych domen, kt\u00f3rej utrzymanie wymaga znacznych zasob\u00f3w, w NOD stosuje si\u0119 struktur\u0119 probabilistyczn\u0105. <noindex><a rel=\"nofollow\" href=\"http:\/\/webdocs.cs.ualberta.ca\/~drafiei\/papers\/DupDet06Sigmod.pdf\">SBF<\/a><\/noindex> (Stable Bloom Filter), pozwalaj\u0105c na minimalizacj\u0119 zu\u017cycia pami\u0119ci i CPU. Aby w\u0142\u0105czy\u0107 t\u0119 funkcjonalno\u015b\u0107, w ustawieniach nale\u017cy poda\u0107 &#171;new-domain-tracking=yes&#187;.\n<li class=\"l\"> Po uruchomieniu pod kontrol\u0105 systemd proces PowerDNS Recursor teraz dzia\u0142a pod nieuprzywilejowanym u\u017cytkownikiem pdns-recursor zamiast root. Dla system\u00f3w bez systemd i bez chroot, domy\u015blnie do przechowywania gniazda steruj\u0105cego i pliku pid teraz u\u017cywany jest katalog \/var\/run\/pdns-recursor.\n<\/ul>\n<p>Ponadto, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.knot-dns.cz\/2020-03-03-version-293.html\">opublikowano<\/a><\/noindex> wydanie <noindex><a rel=\"nofollow\" href=\"https:\/\/www.knot-dns.cz\/\">KnotDNS 2.9.3<\/a><\/noindex>, wysokowydajny autorytatywny serwer DNS (rekursor realizowany jako osobna aplikacja), kt\u00f3ry obs\u0142uguje wszystkie nowoczesne funkcje DNS. Projekt jest rozwijany przez czeski rejestr nazw CZ.NIC, napisany w j\u0119zyku C i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/CZ-NIC\/knot\">rozpowszechniany<\/a><\/noindex> jest licencjonowany na zasadach GPLv3. <\/p>\n<p>KnotDNS wyr\u00f3\u017cnia si\u0119 orientacj\u0105 na wysok\u0105 wydajno\u015b\u0107 przetwarzania zapyta\u0144, do czego stosuje si\u0119 wielow\u0105tkow\u0105, w du\u017cej mierze nieblokuj\u0105c\u0105 realizacj\u0119, dobrze skaluj\u0105c\u0105 si\u0119 na systemach SMP. Oferowane s\u0105 takie mo\u017cliwo\u015bci, jak dodawanie i usuwanie stref w locie, przesy\u0142anie stref mi\u0119dzy serwerami, DDNS (dynamiczne aktualizacje), NSID (RFC 5001), rozszerzenia EDNS0 oraz DNSSEC (w tym NSEC3), ograniczenia intensywno\u015bci odpowiedzi (RRL). <\/p>\n<p>W nowym wydaniu:<\/p>\n<ul>\n<li class=\"l\"> Dodano ustawienie &#8216;remote.block-notify-after-transfer&#8217; do wy\u0142\u0105czenia wysy\u0142ania wiadomo\u015bci NOTIFY;\n<li class=\"l\"> Zrealizowano eksperymentalne wsparcie dla algorytmu Ed448 w DNSSE (wymaga GnuTLS 3.6.12+ i jeszcze nie wydanego <noindex><a rel=\"nofollow\" href=\"https:\/\/www.lysator.liu.se\/~nisse\/nettle\/\">Nettle 3.6+<\/a><\/noindex>);\n<li class=\"l\"> W keymgr dodano parametr &#8216;local-serial&#8217; do uzyskiwania lub ustawiania w bazie danych KASP numeru seryjnego SOA dla podpisanej strefy;\n<li class=\"l\"> W keymgr dodano wsparcie dla importu kluczy Ed25519 i Ed448 w formacie serwera DNS BIND;\n<li class=\"l\"> Warto\u015b\u0107 ustawienia &#8216;server.tcp-io-timeout&#8217; domy\u015blnie zwi\u0119kszono do 500 ms, a &#8216;database.journal-db-max-size&#8217; zmniejszono do 512 MiB w systemach 32-bitowych.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52488\">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 \u043a\u044d\u0448\u0438\u0440\u0443\u044e\u0448\u0435\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 PowerDNS Recursor 4.3, \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u043e\u0435 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0438\u043c\u0451\u043d. PowerDNS Recursor \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d \u043d\u0430 \u043e\u0434\u043d\u043e\u0439 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u0435 \u0441 PowerDNS Authoritative Server, \u043d\u043e \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u0438 \u0430\u0432\u0442\u043e\u0440\u0438\u0442\u0435\u0442\u043d\u044b\u0439 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u044b PowerDNS \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u0440\u0430\u0437\u043d\u044b\u0445 \u0446\u0438\u043a\u043b\u043e\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0432 \u0444\u043e\u0440\u043c\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432. \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. \u0421\u0435\u0440\u0432\u0435\u0440 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0441\u0431\u043e\u0440\u0430 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 [&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-72951","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043a\u044d\u0448\u0438\u0440\u0443\u044e\u0448\u0435\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pl\/blog\/news\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3\" \/>\n\t<meta name=\"generator\" content=\"All in 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