Jeden z 13 ko\u0159enov\u00fdch server\u016f DNS (c.root-servers.net), kter\u00e9 zaji\u0161\u0165uj\u00ed fungov\u00e1n\u00ed ko\u0159enov\u00e9 z\u00f3ny DNS (po\u010d\u00e1te\u010dn\u00ed \u010dl\u00e1nek v \u0159et\u011bzci resolvov\u00e1n\u00ed dom\u00e9nov\u00fdch jmen, poskytuj\u00edc\u00ed informace o DNS serverech, kter\u00e9 spravuj\u00ed dom\u00e9ny nejvy\u0161\u0161\u00edho \u0159\u00e1du, a kl\u00ed\u010de pro jejich verifikaci pomoc\u00ed DNSSEC), byl \u010dty\u0159i dny v stavu nesynchronizace s ostatn\u00edmi ko\u0159enov\u00fdmi DNS servery. Fungov\u00e1n\u00ed ko\u0159enov\u00e9ho DNS serveru \u201eC\u201c (192.33.4.12) zaji\u0161\u0165uje 12 server\u016f um\u00edst\u011bn\u00fdch v r\u016fzn\u00fdch zem\u00edch. V\u0161echny tyto servery od 18. do 22. kv\u011btna neodr\u00e1\u017eely zm\u011bny v ko\u0159enov\u00e9 z\u00f3n\u011b, poskytovaly zastaral\u00e1 data a nesynchronizovaly se s ostatn\u00edmi komponentami ko\u0159enov\u00e9 infrastruktury DNS. <\/p>\n
V uveden\u00e9m obdob\u00ed nebyly do ko\u0159enov\u00e9 z\u00f3ny prov\u00e1d\u011bny \u017e\u00e1dn\u00e9 zm\u011bny, ale byla napl\u00e1nov\u00e1na pr\u00e1ce na aktualizaci digit\u00e1ln\u00edho podpisu DNSEC pro dom\u00e9nu nejvy\u0161\u0161\u00edho \u0159\u00e1du \u201e.gov\u201c, prov\u00e1d\u011bn\u00e1 v r\u00e1mci p\u0159echodu na kryptografick\u00e9 kl\u00ed\u010de zalo\u017een\u00e9 na algoritmu ECDSA. Pro ov\u011b\u0159en\u00ed z\u00f3ny \u201e.gov\u201c se v DNSSEC ned\u00e1vno za\u010daly pou\u017e\u00edvat algoritmy 8 (RSA\/SHA-256) a 13 (ECDSA P-256\/SHA-256), ale algoritmus 8 z\u016fst\u00e1v\u00e1 aktivn\u00ed. O v\u00edkendu se pl\u00e1novalo p\u0159idat do ko\u0159enov\u00e9 z\u00f3ny DS z\u00e1znam pro algoritmus 13, pot\u00e9 za\u010d\u00edt proces odstran\u011bn\u00ed DS z\u00e1znamu pro algoritmus 8. Podobnou n\u00e1hradu se pl\u00e1novalo prov\u00e9st i pro dom\u00e9nu \u201e.int\u201c. Nakonec, souvisej\u00edc\u00ed s podporou algoritmu 13 DS z\u00e1znamy pro ko\u0159enov\u00e9 servery<\/a> byly zasl\u00e1ny do IANA, ale nikdy nebyly publikov\u00e1ny, proto\u017ee po zji\u0161t\u011bn\u00ed probl\u00e9m\u016f byl proces v\u00fdm\u011bny kl\u00ed\u010d\u016f pozastaven do vyjasn\u011bn\u00ed situace s ko\u0159enov\u00fdm serverem \u201eC\u201c. <\/p>\n Fungov\u00e1n\u00ed ko\u0159enov\u00e9ho DNS serveru \u201eC\u201c na z\u00e1klad\u011b dohod s organizac\u00ed ICANN zaji\u0161\u0165uje p\u00e1te\u0159n\u00ed poskytovatel prvn\u00ed \u00farovn\u011b (Tier 1) Cogent Communications, kter\u00fd je p\u0159\u00edtomen ve 53 zem\u00edch. P\u00e1r dn\u00ed p\u0159ed incidentem byly zaznamen\u00e1ny probl\u00e9my s p\u0159\u00edstupem ze s\u00edt\u011b Cogent Communications k 1575 autonomn\u00edm syst\u00e9m\u016fm kv\u016fli ukon\u010den\u00ed peeringu s indick\u00fdm poskytovatelem prvn\u00ed \u00farovn\u011b Tata Communications. <\/p>\n D\u016fvodem pro ukon\u010den\u00ed aktualizac\u00ed ko\u0159enov\u00e9 DNS z\u00f3ny je selh\u00e1n\u00ed monitorovac\u00edho syst\u00e9mu, kter\u00fd sledoval zm\u011bny. K selh\u00e1n\u00ed do\u0161lo po zm\u011bn\u011b routing, kter\u00e1 nesouvisela s \u010dinnost\u00ed DNS server\u016f (podrobnosti o p\u0159\u00ed\u010din\u00e1ch zat\u00edm nebyly zve\u0159ejn\u011bny). Krom\u011b roz\u0161\u00ed\u0159en\u00ed synchronizace nebyly zaznamen\u00e1ny \u017e\u00e1dn\u00e9 probl\u00e9my s vy\u0159izov\u00e1n\u00edm dotaz\u016f na ko\u0159enov\u00fd DNS server «C». Synchronizace byla pln\u011b obnovena 22. kv\u011btna v 19 hodin (MSK). Mezi mo\u017en\u00fdmi probl\u00e9my, kter\u00e9 mohly nastat b\u011bhem del\u0161\u00edho roz\u0161\u00ed\u0159en\u00ed synchronizace, se uv\u00e1d\u00ed mo\u017enost poskytov\u00e1n\u00ed neaktu\u00e1ln\u00edch \u00fadaj\u016f o kl\u00ed\u010d\u00edch pou\u017e\u00edvan\u00fdch v DNSSEC a adres\u00e1ch DNS server\u016f, kter\u00e9 poskytuj\u00ed slu\u017eby. dom\u00e9ny<\/a> prvn\u00edho stupn\u011b. \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\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\udd47Jeden z ko\u0159enov\u00fdch DNS server\u016f byl 4 dny v desynchronizovan\u00e9m stavu | ProHoster","description":"Jeden ze 13 ko\u0159enov\u00fdch DNS server\u016f (c.root-servers.net), kter\u00fd zaji\u0161\u0165uje fungov\u00e1n\u00ed ko\u0159enov\u00e9 DNS z\u00f3ny (po\u010d\u00e1te\u010dn\u00ed \u010dl\u00e1nek v \u0159et\u011bzci resolvov\u00e1n\u00ed dom\u00e9n, poskytuj\u00edc\u00ed informace o DNS serverech 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"