{"id":36712,"date":"2019-10-31T22:13:19","date_gmt":"2019-10-31T19:13:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-firefox-budet-provedyon-eksperiment-svyazannyj-s-dns-over-https\/"},"modified":"2019-10-31T22:13:19","modified_gmt":"2019-10-31T19:13:19","slug":"v-firefox-budet-provedyon-eksperiment-svyazannyj-s-dns-over-https","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-firefox-budet-provedyon-eksperiment-svyazannyj-s-dns-over-https","title":{"rendered":"Ve Firefoxu bude prov\u00e1d\u011bn experiment souvisej\u00edc\u00ed s DNS-over-HTTPS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i Mozilla ozn\u00e1mili<\/a><\/noindex> o proveden\u00ed nov\u00e9 studie v r\u00e1mci p\u0159\u00edpravy na zaveden\u00ed funkce DNS p\u0159es HTTPS (DoH, DNS over HTTPS). B\u011bhem prov\u00e1d\u011bn\u00e9ho experimentu na syst\u00e9mech \u010d\u00e1sti u\u017eivatel\u016f vyd\u00e1n\u00ed Firefoxu v USA bude shrom\u00e1\u017ed\u011bna statistika o pou\u017e\u00edv\u00e1n\u00ed syst\u00e9m\u016f rodi\u010dovsk\u00e9 kontroly a firemn\u00edch resolver\u016f. Od \u00fa\u010dasti v experimentu se lze vzd\u00e1t prost\u0159ednictv\u00edm str\u00e1nky «about:studies» (v\u00fdzkum je uveden v seznamu jako «Detection Logic for DNS-over-HTTPS»).<\/p>\n

Pro v\u00fdzkum budou shrom\u00e1\u017ed\u011bna anonymizovan\u00e1 data, kter\u00e1 zahrnuj\u00ed pouze po\u010d\u00edtadla, bez uveden\u00ed konkr\u00e9tn\u00edch adres a dom\u00e9n. Pro zji\u0161t\u011bn\u00ed syst\u00e9m\u016f rodi\u010dovsk\u00e9 kontroly bude zasl\u00e1n dotaz na ur\u010den\u00ed n\u00e1zvu exampleadultsite.com a pokud se neshoduje s aktu\u00e1ln\u00edm IP, lze usoudit, \u017ee je aktivn\u00ed blokov\u00e1n\u00ed obsahu pro dosp\u011bl\u00e9 na \u00farovni DNS. Tak\u00e9 budou hodnoceny IP adres<\/a> vracen\u00e9 pro Google a YouTube, pro ov\u011b\u0159en\u00ed jejich p\u0159esm\u011brov\u00e1n\u00ed na restrict.youtube.com, forcesafesearch.google.com a restrictmoderate.youtube.com. <\/p>\n

Pro zji\u0161t\u011bn\u00ed pou\u017eit\u00ed intern\u00edch firemn\u00edch resolver\u016f budou ov\u011b\u0159eny hostitele zjistiteln\u00fdch p\u0159i otev\u00edr\u00e1n\u00ed webov\u00fdch str\u00e1nek na p\u0159\u00edtomnost netypick\u00fdch dom\u00e9n nejvy\u0161\u0161\u00ed \u00farovn\u011b (TLD) a jejich n\u00e1vrat na intranetov\u00e9 adresy. Motivem pro proveden\u00ed experimentu byly obavy, \u017ee v\u00fdchoz\u00ed aktivace DNS-over-HTTPS m\u016f\u017ee naru\u0161it fungov\u00e1n\u00ed existuj\u00edc\u00edch syst\u00e9m\u016f rodi\u010dovsk\u00e9 kontroly prost\u0159ednictv\u00edm DNS a tak\u00e9 vytvo\u0159it probl\u00e9my pro u\u017eivatele firemn\u00edch s\u00edt\u00ed, kte\u0159\u00ed pou\u017e\u00edvaj\u00ed DNS servery poskytuj\u00edc\u00ed informace o intern\u00edch dom\u00e9n\u00e1ch, kter\u00e9 nejsou viditeln\u00e9 ve ve\u0159ejn\u00e9 s\u00edti.<\/p>\n

P\u0159ipom\u00edn\u00e1me, \u017ee DoH m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00e9 pro vylou\u010den\u00ed \u00fanik\u016f informac\u00ed o po\u017eadovan\u00fdch n\u00e1zvech hostitel\u016f p\u0159es DNS servery poskytovatel\u016f, boj s MITM \u00fatoky a podvodn\u00fdmi DNS trafiky, proti blokaci na \u00farovni DNS nebo pro organizaci pr\u00e1ce v p\u0159\u00edpad\u011b nemo\u017enosti p\u0159\u00edm\u00e9ho p\u0159\u00edstupu k DNS server\u016fm (nap\u0159\u00edklad p\u0159i pr\u00e1ci p\u0159es proxy). Pokud v b\u011b\u017en\u00e9 situaci DNS dotazy zas\u00edlaj\u00ed p\u0159\u00edmo na ur\u010dit\u00e9 DNS servery definovan\u00e9 v konfiguraci syst\u00e9mu, tak v p\u0159\u00edpad\u011b DoH je dotaz na ur\u010den\u00ed IP adresy hostitele encapsulov\u00e1n do HTTPS tra\u0165i a zasl\u00e1n na HTTP server, kde resolver zpracov\u00e1v\u00e1 dotazy p\u0159es Web API. St\u00e1vaj\u00edc\u00ed standard DNSSEC pou\u017e\u00edv\u00e1 \u0161ifrov\u00e1n\u00ed pouze pro autentizaci klienta a serveru, ale nechr\u00e1n\u00ed traffic p\u0159ed odposlechem a nezaru\u010duje d\u016fv\u011brnost dotaz\u016f. <\/p>\n

Pro povolen\u00ed DoH v about:config je t\u0159eba zm\u011bnit hodnotu prom\u011bnn\u00e9 network.trr.mode, kter\u00e1 je podporov\u00e1na od Firefoxu 60. Hodnota 0 zcela vypne DoH; 1 \u2014 pou\u017e\u00edv\u00e1 se DNS nebo DoH, v z\u00e1vislosti na tom, co je rychlej\u0161\u00ed; 2 \u2014 pou\u017e\u00edv\u00e1 se DoH jako v\u00fdchoz\u00ed, a DNS jako z\u00e1lo\u017en\u00ed varianta; 3 \u2014 pou\u017e\u00edv\u00e1 se pouze DoH; 4 \u2014 zrcadlov\u00fd re\u017eim, v n\u011bm\u017e jsou DoH a DNS vyu\u017e\u00edv\u00e1ny paraleln\u011b. V\u00fdchoz\u00ed je DNS server CloudFlare, ale lze jej zm\u011bnit prost\u0159ednictv\u00edm parametru network.trr.uri, nap\u0159\u00edklad lze nastavit «https:\/\/dns.google.com\/experimental» nebo «https:\/\/9.9.9.9\/dns-query».<\/p>\n

<\/a><\/noindex><\/p>\n

Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Mozilla \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0438 \u043a \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a DNS \u043f\u043e\u0432\u0435\u0440\u0445 HTTPS (DoH, DNS over HTTPS). \u0412 \u0445\u043e\u0434\u0435 \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u043c\u043e\u0433\u043e \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0447\u0430\u0441\u0442\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0440\u0435\u043b\u0438\u0437\u043e\u0432 Firefox \u0438\u0437 \u0421\u0428\u0410 \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u0431\u0440\u0430\u043d\u0430 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0430 \u043e\u0431 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u0438\u0441\u0442\u0435\u043c \u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0438 \u043a\u043e\u0440\u043f\u043e\u0440\u0430\u0442\u0438\u0432\u043d\u044b\u0445 \u0440\u0435\u0437\u043e\u043b\u0432\u0435\u0440\u043e\u0432. \u041e\u0442\u043a\u0430\u0437\u0430\u0442\u044c\u0441\u044f \u043e\u0442 \u0443\u0447\u0430\u0441\u0442\u0438\u044f \u0432 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0435 \u043c\u043e\u0436\u043d\u043e \u0447\u0435\u0440\u0435\u0437 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0443 «about:studies» (\u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 […]<\/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-36712","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47V Firefoxu bude proveden experiment t\u00fdkaj\u00edc\u00ed se DNS-over-HTTPS | ProHoster","description":"V\u00fdvoj\u00e1\u0159i Mozilla ozn\u00e1mili, \u017ee bude proveden 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