{"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\/sk\/blog\/news\/v-firefox-budet-provedyon-eksperiment-svyazannyj-s-dns-over-https","title":{"rendered":"V prehliada\u010di Firefox sa uskuto\u010dn\u00ed experiment s\u00favisiaci s DNS-over-HTTPS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1ri Mozilla ozn\u00e1mili<\/a><\/noindex> o vykonan\u00ed novej \u0161t\u00fadie v r\u00e1mci pr\u00edpravy na implement\u00e1ciu funkcie dotazovania DNS cez HTTPS (DoH, DNS over HTTPS). Po\u010das vykon\u00e1van\u00e9ho experimentu sa na syst\u00e9moch \u010dasti pou\u017e\u00edvate\u013eov vydan\u00ed Firefox z USA bude zhroma\u017e\u010fova\u0165 \u0161tatistika o pou\u017e\u00edvan\u00ed syst\u00e9mov rodi\u010dovskej kontroly a firemn\u00fdch resolverov. Od \u00fa\u010dasti na experimente sa mo\u017eno odhl\u00e1si\u0165 cez str\u00e1nku «about:studies» (\u0161t\u00fadia je uveden\u00e1 v zozname ako «Detection Logic for DNS-over-HTTPS»).<\/p>\n

Na \u0161t\u00fadiu bud\u00fa zhroma\u017eden\u00e9 anonymizovan\u00e9 \u00fadaje, ktor\u00e9 bud\u00fa obsahova\u0165 iba po\u010d\u00edtadl\u00e1, bez uvedenia konkr\u00e9tnych adries a dom\u00e9n. Na zistenie syst\u00e9mov rodi\u010dovskej kontroly bude odoslan\u00e1 po\u017eiadavka na ur\u010denie n\u00e1zvu exampleadultsite.com a ak sa nebude zhodova\u0165 s aktu\u00e1lnou IP adresou, d\u00e1 sa pova\u017eova\u0165, \u017ee blokovanie obsahu pre dospel\u00fdch na \u00farovni DNS je akt\u00edvne. Tie\u017e bud\u00fa vyhodnoten\u00e9 IP adresy<\/a> odpovede pre Google a YouTube, na overenie ich zmien na restrict.youtube.com, forcesafesearch.google.com a restrictmoderate.youtube.com. <\/p>\n

Na zistenie vyu\u017e\u00edvania intern\u00fdch firemn\u00fdch resolverov bude skontrolovan\u00e9, \u010di sa pri otv\u00e1ran\u00ed str\u00e1nok pou\u017e\u00edvaj\u00fa netypick\u00e9 dom\u00e9ny najvy\u0161\u0161ej \u00farovne (TLD) a v\u00f4bec sa vracaj\u00fa intranetov\u00e9 adresy. Mot\u00edvom uskuto\u010dnenia experimentu s\u00fa obavy, \u017ee predvolen\u00e9 zapnutie DNS-over-HTTPS m\u00f4\u017ee naru\u0161i\u0165 fungovanie existuj\u00facich syst\u00e9mov rodi\u010dovskej kontroly prostredn\u00edctvom DNS a vytvori\u0165 probl\u00e9my pre pou\u017e\u00edvate\u013eov firemn\u00fdch siet\u00ed, ktor\u00ed pou\u017e\u00edvaj\u00fa DNS servery poskytuj\u00face inform\u00e1cie o vn\u00fatorn\u00fdch dom\u00e9nach, ktor\u00e9 nie s\u00fa vidite\u013en\u00e9 vo vonkaj\u0161ej sieti.<\/p>\n

Pripom\u00edname, \u017ee DoH m\u00f4\u017ee by\u0165 u\u017eito\u010dn\u00fd na vyl\u00fa\u010denie \u00fanikov inform\u00e1ci\u00ed o po\u017eadovan\u00fdch n\u00e1zvoch hostite\u013eov prostredn\u00edctvom DNS serverov poskytovate\u013eov, boj s MITM \u00fatokmi a manipul\u00e1ciou DNS prev\u00e1dzky, prekon\u00e1vanie blok\u00e1ci\u00ed na \u00farovni DNS alebo na organiz\u00e1ciu pr\u00e1ce v pr\u00edpade nemo\u017enosti priameho kontaktu s DNS servermi (napr\u00edklad pri pr\u00e1ci cez proxy). Ak v be\u017enej situ\u00e1cii s\u00fa DNS po\u017eiadavky priamo odosielan\u00e9 na konkr\u00e9tne DNS servery definovan\u00e9 v konfigur\u00e1cii syst\u00e9mu, v pr\u00edpade DoH je po\u017eiadavka na ur\u010denie IP adresy hostite\u013ea enkapsulovan\u00e1 v HTTPS prev\u00e1dzke a odosielan\u00e1 na HTTP server, na ktorom rezolver spracov\u00e1va po\u017eiadavky cez Web API. Existuj\u00faci \u0161tandard DNSSEC pou\u017e\u00edva \u0161ifrovanie len na autentifik\u00e1ciu klienta a servera, ale nechr\u00e1nia prev\u00e1dzku pred zachyten\u00edm a nezaru\u010duj\u00fa d\u00f4vernos\u0165 po\u017eiadaviek. <\/p>\n

Na aktiv\u00e1ciu DoH je potrebn\u00e9 zmeni\u0165 hodnotu premennej network.trr.mode v about:config, ktor\u00e1 je podporovan\u00e1 od Firefoxu 60. Hodnota 0 \u00faplne vyp\u00edna DoH; 1 \u2014 pou\u017e\u00edva DNS alebo DoH, v z\u00e1vislosti od toho, \u010do je r\u00fdchlej\u0161ie; 2 \u2014 pou\u017e\u00edva DoH ako predvolen\u00e9, a DNS ako z\u00e1lo\u017en\u00fd variant; 3 \u2014 pou\u017e\u00edva iba DoH; 4 \u2014 re\u017eim zrkadlenia, kde s\u00fa DoH a DNS zapojen\u00e9 paralelne. Predvolene sa pou\u017e\u00edva DNS server CloudFlare, ale je mo\u017en\u00e9 ho zmeni\u0165 prostredn\u00edctvom parametra network.trr.uri, napr\u00edklad je mo\u017en\u00e9 nastavi\u0165 \u201ehttps:\/\/dns.google.com\/experimental\u201c alebo \u201ehttps:\/\/9.9.9.9\/dns-query\u201c.<\/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 Firefoxe bude vykonan\u00fd experiment s\u00favisiaci s DNS-over-HTTPS | ProHoster","description":"V\u00fdvoj\u00e1ri Mozilla ozn\u00e1mili 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