{"id":116094,"date":"2024-05-26T14:59:21","date_gmt":"2024-05-26T12:59:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/odin-iz-kornevyh-dns-serverov-4-dnya-nahodilsya-v-rassinhronizirovannom-sostoyanii"},"modified":"2024-05-26T14:59:21","modified_gmt":"2024-05-26T12:59:21","slug":"odin-iz-kornevyh-dns-serverov-4-dnya-nahodilsya-v-rassinhronizirovannom-sostoyanii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/odin-iz-kornevyh-dns-serverov-4-dnya-nahodilsya-v-rassinhronizirovannom-sostoyanii","title":{"rendered":"Jeden z g\u0142\u00f3wnych serwer\u00f3w DNS przez 4 dni by\u0142 w stanie niesynchronizacji.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Jeden z 13 g\u0142\u00f3wnych serwer\u00f3w DNS (c.root-servers.net), kt\u00f3ry zapewnia dzia\u0142anie g\u0142\u00f3wnej strefy DNS (pocz\u0105tkowy element w \u0142a\u0144cuchu rozwi\u0105zywania nazw domen, przekazuj\u0105cy informacje o serwerach DNS obs\u0142uguj\u0105cych domeny najwy\u017cszego poziomu i kluczach do ich weryfikacji za pomoc\u0105 DNSSEC), przez cztery dni znajdowa\u0142 si\u0119 w stanie niesynchronizacji z pozosta\u0142ymi g\u0142\u00f3wnymi serwerami DNS. Prac\u0119 g\u0142\u00f3wnego serwera DNS \u201eC\u201d (192.33.4.12) zapewnia 12 serwer\u00f3w, umiejscowionych w r\u00f3\u017cnych krajach. Wszystkie te serwery od 18 do 22 maja nie odzwierciedla\u0142y zmian w g\u0142\u00f3wnej strefie, przekazywa\u0142y przestarza\u0142e dane i nie synchronizowa\u0142y si\u0119 z pozosta\u0142\u0105 infrastruktur\u0105 g\u0142\u00f3wnego DNS. <\/p>\n

W tym okresie w g\u0142\u00f3wnej strefie nie wprowadzano zmian, ale zaplanowano prace nad aktualizacj\u0105 podpisu cyfrowego DNSSEC dla domeny najwy\u017cszego poziomu \u201e.gov\u201d, prowadzone w ramach przej\u015bcia na klucze kryptograficzne oparte na algorytmie ECDSA. Dla certyfikacji strefy \u201e.gov\u201d w DNSSEC od niedawna stosowane s\u0105 algorytmy 8 (RSA\/SHA-256) i 13 (ECDSA P-256\/SHA-256), ale algorytm 8 pozostaje aktywny. W weekend planowano doda\u0107 do g\u0142\u00f3wnej strefy zapis DS dla algorytmu 13, a nast\u0119pnie rozpocz\u0105\u0107 proces usuwania zapisu DS dla algorytmu 8. Podobn\u0105 wymian\u0119 zaplanowano r\u00f3wnie\u017c dla domeny \u201e.int\u201d. W rezultacie powi\u0105zane z obs\u0142ug\u0105 algorytmu 13 zapisy DS dla g\u0142\u00f3wnych serwer\u00f3w<\/a> zosta\u0142y przes\u0142ane do IANA, ale nie zosta\u0142y opublikowane, poniewa\u017c po wykryciu problem\u00f3w proces wymiany kluczy zosta\u0142 wstrzymany do wyja\u015bnienia sytuacji z g\u0142\u00f3wnym serwerem \u201eC\u201d. <\/p>\n

Prac\u0119 g\u0142\u00f3wnego serwera DNS \u201eC\u201d na podstawie um\u00f3w z korporacj\u0105 ICANN zapewnia dostawca us\u0142ug szkieletowych pierwszego poziomu (Tier 1) Cogent Communications, obecny w 53 krajach. Kilka dni przed incydentem odnotowano problemy z dost\u0119pem z sieci Cogent Communications do 1575 system\u00f3w autonomicznych z powodu zako\u0144czenia wymiany z indyjskim dostawc\u0105 us\u0142ug pierwszego poziomu Tata Communications. <\/p>\n

Powodem zaprzestania otrzymywania aktualizacji dla strefy DNS g\u0142\u00f3wnej jest awaria systemu monitorowania, kt\u00f3ry odpowiada\u0142 za \u015bledzenie zmian. Awaria wyst\u0105pi\u0142a po zmianie routingu, niezwi\u0105zanej z prac\u0105 serwer\u00f3w DNS (szczeg\u00f3\u0142owe informacje o przyczynach nie zosta\u0142y na razie podane). Poza desynchronizacj\u0105, nie zaobserwowano narusze\u0144 w przetwarzaniu zapyta\u0144 do g\u0142\u00f3wnego serwera DNS \u201eC\u201d. Synchronizacja zosta\u0142a ca\u0142kowicie przywr\u00f3cona 22 maja o godzinie 19 (MSK). Z mo\u017cliwych problem\u00f3w, kt\u00f3re mog\u0142y wyst\u0105pi\u0107 w trakcie d\u0142ugotrwa\u0142ej desynchronizacji, wskazuje si\u0119 na mo\u017cliwo\u015b\u0107 wydania nieaktualnych danych o kluczach u\u017cywanych w DNSSEC oraz adresach serwer\u00f3w DNS obs\u0142uguj\u0105cych domeny<\/a> pierwszego poziomu.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u0434\u0438\u043d \u0438\u0437 13 \u043a\u043e\u0440\u043d\u0435\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 DNS (c.root-servers.net), \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0440\u0430\u0431\u043e\u0442\u0443 \u043a\u043e\u0440\u043d\u0435\u0432\u043e\u0439 \u0437\u043e\u043d\u044b DNS (\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0435 \u0437\u0432\u0435\u043d\u043e \u0432 \u0446\u0435\u043f\u043e\u0447\u043a\u0435 \u0440\u0435\u0437\u043e\u043b\u0432\u0438\u043d\u0433\u0430 \u0434\u043e\u043c\u0435\u043d\u043d\u044b\u0445 \u0438\u043c\u0451\u043d, \u043e\u0442\u0434\u0430\u044e\u0449\u0435\u0435 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445, \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0434\u043e\u043c\u0435\u043d\u044b \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f, \u0438 \u043a\u043b\u044e\u0447\u0430\u0445 \u0434\u043b\u044f \u0438\u0445 \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 DNSSEC) \u0447\u0435\u0442\u044b\u0440\u0435 \u0434\u043d\u044f \u043d\u0430\u0445\u043e\u0434\u0438\u043b\u0441\u044f \u0432 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0438, \u043d\u0435 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u0441 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u043c\u0438 \u043a\u043e\u0440\u043d\u0435\u0432\u044b\u043c\u0438 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438. \u0420\u0430\u0431\u043e\u0442\u0443 \u043a\u043e\u0440\u043d\u0435\u0432\u043e\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 «\u0421» (192.33.4.12) \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 12 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u0440\u0430\u0437\u043c\u0435\u0449\u0451\u043d\u043d\u044b\u0445 […]<\/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-116094","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\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\udd47Jedna z g\u0142\u00f3wnych serwer\u00f3w DNS by\u0142a w stanie niesynchronizacji przez 4 dni | ProHoster","description":"Jeden z 13 g\u0142\u00f3wnych serwer\u00f3w DNS (c.root-servers.net), kt\u00f3ry zapewnia dzia\u0142anie g\u0142\u00f3wnej strefy DNS (pierwsze ogniwo w \u0142a\u0144cuchu rozwi\u0105zywania nazw domen, przekazuj\u0105ce informacje o 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