{"id":38121,"date":"2019-10-31T22:21:46","date_gmt":"2019-10-31T19:21:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-chrome-78-nachnutsya-eksperimenty-s-vklyucheniem-dns-over-https\/"},"modified":"2019-10-31T22:21:46","modified_gmt":"2019-10-31T19:21:46","slug":"v-chrome-78-nachnutsya-eksperimenty-s-vklyucheniem-dns-over-https","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/v-chrome-78-nachnutsya-eksperimenty-s-vklyucheniem-dns-over-https","title":{"rendered":"W Chrome 78 rozpoczn\u0105 si\u0119 eksperymenty z w\u0142\u0105czeniem DNS-over-HTTPS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nast\u0105pi\u0142a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51439\">Mozilla<\/a><\/noindex> firma Google <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.chromium.org\/2019\/09\/experimenting-with-same-provider-dns.html\">powiedzia\u0142a<\/a><\/noindex> o zamiarze przeprowadzenia eksperymentu w celu sprawdzenia wdra\u017canej dla przegl\u0105darki Chrome realizacji \u201eDNS over HTTPS\u201d (DoH, DNS przez HTTPS). W wersji Chrome 78, zaplanowanej na 22 pa\u017adziernika, domy\u015blnie niekt\u00f3re kategorie u\u017cytkownik\u00f3w <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chromium.org\/developers\/dns-over-https\">prze\u0142o\u017cone<\/a><\/noindex> u\u017cywa\u0107 DoH. W eksperymencie wdro\u017cenia DoH wezm\u0105 udzia\u0142 tylko u\u017cytkownicy, kt\u00f3rzy w swoich aktualnych ustawieniach systemowych maj\u0105 wskazanych okre\u015blonych dostawc\u00f3w DNS, uznanych za zgodne z DoH. <\/p>\n<p>Na bia\u0142\u0105 list\u0119 dostawc\u00f3w DNS w\u0142\u0105czono <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/tips\/info\/3087.shtml\">us\u0142ugi<\/a><\/noindex> Google (8.8.8.8, 8.8.4.4), Cloudflare (1.1.1.1, 1.0.0.1), OpenDNS (208.67.222.222, 208.67.220.220), Quad9 (9.9.9.9, 149.112.112.112), Cleanbrowsing (185.228.168.168, 185.228.169.168) oraz DNS.SB (185.222.222.222, 185.184.222.222). Je\u015bli w ustawieniach DNS u\u017cytkownika znajdzie si\u0119 jeden z wymienionych serwer\u00f3w DNS, DoH w Chrome zostanie aktywowane domy\u015blnie. Dla tych, kt\u00f3rzy korzystaj\u0105 z dostarczonych przez lokalnego dostawc\u0119 internetu serwer\u00f3w DNS, wszystko pozostanie bez zmian i do zapyta\u0144 DNS nadal b\u0119dzie u\u017cywany systemowy resolver. <\/p>\n<p>Wa\u017cn\u0105 r\u00f3\u017cnic\u0105 w por\u00f3wnaniu do wdro\u017cenia DoH w Firefox, gdzie stopniowe domy\u015blne w\u0142\u0105czenie DoH <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51439\">rozpocznie si\u0119<\/a><\/noindex> ju\u017c pod koniec wrze\u015bnia, jest brak zwi\u0105zku z jednym dostawc\u0105 DoH. Je\u015bli w Firefox domy\u015blnie <noindex><a rel=\"nofollow\" href=\"https:\/\/support.mozilla.org\/en-US\/kb\/firefox-dns-over-https\">jest u\u017cywane<\/a><\/noindex> serwer DNS Cloudflare jest okre\u015blony, to w Chrome dokonane zostanie jedynie zaktualizowanie metody obs\u0142ugi DNS na r\u00f3wnowa\u017cny serwis, bez zmiany dostawcy DNS. Na przyk\u0142ad, je\u015bli u\u017cytkownik w ustawieniach systemowych ma okre\u015blone DNS 8.8.8.8, to w Chrome <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/document\/d\/15Ss0OaJeb-T3g2RMwgikHvsC0CPKd-MLeGeetv1wYY4\/edit#\">zostanie aktywowane<\/a><\/noindex> Us\u0142uga DoH Google (\u201ehttps:\/\/dns.google.com\/dns-query\u201d), je\u015bli DNS \u2014 1.1.1.1, to us\u0142uga DoH Cloudflare (\u201ehttps:\/\/cloudflare-dns.com\/dns-query\u201d) i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/curl\/curl\/wiki\/DNS-over-HTTPS#publicly-available-servers\">tym podobne.<\/a><\/noindex><\/p>\n<p>Je\u015bli u\u017cytkownik sobie tego \u017cyczy, mo\u017ce w\u0142\u0105czy\u0107 lub wy\u0142\u0105czy\u0107 DoH za pomoc\u0105 ustawienia \u201echrome:\/\/flags\/#dns-over-https\u201d. Wspierane s\u0105 trzy tryby pracy: \u201esecure\u201d, \u201eautomatic\u201d i \u201eoff\u201d. W trybie \u201esecure\u201d hosty s\u0105 okre\u015blane wy\u0142\u0105cznie na podstawie wcze\u015bniej zapisanych bezpiecznych warto\u015bci (uzyskanych przez bezpieczne po\u0142\u0105czenie) i zapyta\u0144 przez DoH; w tym trybie nie stosuje si\u0119 powrotu do zwyk\u0142ego DNS. W trybie \u201eautomatic\u201d je\u015bli DoH i bezpieczna pami\u0119\u0107 podr\u0119czna s\u0105 niedost\u0119pne, dopuszcza si\u0119 pozyskiwanie danych z niebezpiecznej pami\u0119ci podr\u0119cznej oraz po\u0142\u0105czenia przez tradycyjny DNS. W trybie \u201eoff\u201d najpierw sprawdzana jest og\u00f3lna pami\u0119\u0107 podr\u0119czna, a je\u015bli danych brak, zapytanie jest wysy\u0142ane przez systemowy DNS. Tryb jest ustawiany przez <noindex><a rel=\"nofollow\" href=\"https:\/\/cs.chromium.org\/chromium\/src\/net\/dns\/dns_config.h?l=27&#038;rcl=3cf5b735fc8dcce6d9d8a5a9591d2a3700dceca4\">ustawienia<\/a><\/noindex> kDnsOverHttpsMode, a szablon do dopasowania serwer\u00f3w za pomoc\u0105 kDnsOverHttpsTemplates.<\/p>\n<p>Eksperyment dotycz\u0105cy w\u0142\u0105czenia DoH b\u0119dzie przeprowadzony na wszystkich wspieranych platformach w Chrome, z wyj\u0105tkiem Linuxa i iOS ze wzgl\u0119du na z\u0142o\u017cono\u015b\u0107 analizy ustawie\u0144 resolvera oraz ograniczony dost\u0119p do systemowych ustawie\u0144 DNS. W przypadku wyst\u0105pienia problem\u00f3w z wysy\u0142aniem zapyta\u0144 do serwera DoH (na przyk\u0142ad z powodu jego zablokowania, utraty \u0142\u0105czno\u015bci sieciowej lub awarii), przegl\u0105darka automatycznie przywr\u00f3ci systemowe ustawienia DNS. <\/p>\n<p>Celem przeprowadzenia eksperymentu jest ostateczna weryfikacja implementacji DoH oraz badanie wp\u0142ywu stosowania DoH na wydajno\u015b\u0107. Nale\u017cy zauwa\u017cy\u0107, \u017ce faktycznie wsparcie dla DoH zosta\u0142o <noindex><a rel=\"nofollow\" href=\"https:\/\/bugs.chromium.org\/p\/chromium\/issues\/detail?id=799753\">dodano<\/a><\/noindex> dodane do bazy kodu Chrome ju\u017c w lutym, ale do konfiguracji i w\u0142\u0105czenia DoH <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/tips\/3120_chrome_firefox_dns_doh_https_crypt_privacy.shtml\">konieczne by\u0142o<\/a><\/noindex> uruchomienie Chrome z specjalnym flagiem i nieoczywistym zestawem opcji.<\/p>\n<p>Przypomnijmy, \u017ce DoH mo\u017ce by\u0107 przydatne do eliminacji wyciek\u00f3w informacji o \u017c\u0105danych nazwach host\u00f3w przez serwery DNS dostawc\u00f3w, walki z atakami MITM oraz fa\u0142szowaniem ruchu DNS (na przyk\u0142ad podczas \u0142\u0105czenia z publicznymi Wi-Fi), przeciwdzia\u0142ania blokadom na poziomie DNS (DoH nie mo\u017ce zast\u0105pi\u0107 VPN w zakresie omijania blokad wprowadzonych na poziomie DPI) lub do organizowania pracy w przypadku braku mo\u017cliwo\u015bci bezpo\u015bredniego kontaktu z serwerami DNS (na przyk\u0142ad podczas pracy przez proxy). W zwyk\u0142ych warunkach zapytania DNS s\u0105 bezpo\u015brednio wysy\u0142ane do okre\u015blonych w konfiguracji systemu serwer\u00f3w DNS, natomiast w przypadku DoH zapytanie o okre\u015blenie adresu IP hosta jest enkapsulowane w ruchu HTTPS i wysy\u0142ane do serwera HTTP, na kt\u00f3rym resolver obs\u0142uguje zapytania przez Web API. Istniej\u0105cy standard DNSSEC stosuje szyfrowanie g\u0142\u00f3wnie do uwierzytelniania klienta i serwera, ale nie chroni ruchu przed przechwyceniem i nie gwarantuje poufno\u015bci zapyta\u0144. <\/p>\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=51488\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043b\u0435\u0434\u043e\u043c \u0437\u0430 Mozilla \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u043d\u0430\u043c\u0435\u0440\u0435\u043d\u0438\u0438 \u043f\u0440\u043e\u0432\u0435\u0441\u0442\u0438 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 Chrome \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 &#171;DNS \u043f\u043e\u0432\u0435\u0440\u0445 HTTPS&#187; (DoH, DNS over HTTPS). \u0412 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 Chrome 78, \u043d\u0430\u043c\u0435\u0447\u0435\u043d\u043d\u043e\u043c \u043d\u0430 22 \u043e\u043a\u0442\u044f\u0431\u0440\u044f, \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0431\u0443\u0434\u0443\u0442 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0435\u043d\u044b \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 DoH. \u0412 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0435 \u043f\u043e \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044e DoH \u043f\u0440\u0438\u043c\u0443\u0442 \u0443\u0447\u0430\u0441\u0442\u0438\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438, \u0432 \u0442\u0435\u043a\u0443\u0449\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u043d\u0430\u0441\u0442\u043e\u0439\u043a\u0430\u0445 [&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-38121","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\u043b\u0435\u0434\u043e\u043c \u0437\u0430 Mozilla 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