Um dos 13 servidores DNS raiz (c.root-servers.net), que garante o funcionamento da zona raiz do DNS (o elo inicial na cadeia de resolu\u00e7\u00e3o de nomes de dom\u00ednio, que fornece informa\u00e7\u00f5es sobre os servidores DNS que atendem os dom\u00ednios de primeiro n\u00edvel e as chaves para sua verifica\u00e7\u00e3o por meio do DNSSEC) ficou fora de sincroniza\u00e7\u00e3o com os demais servidores DNS raiz por quatro dias. O servidor DNS raiz 'C' (192.33.4.12) \u00e9 mantido por 12 servidores localizados em diferentes pa\u00edses. Todos esses servidores, de 18 a 22 de maio, n\u00e3o refletiram as mudan\u00e7as na zona raiz, retornando dados desatualizados e n\u00e3o sincronizando com a infraestrutura restante do DNS raiz. <\/p>\n
No per\u00edodo mencionado, n\u00e3o houve altera\u00e7\u00f5es na zona raiz, mas estava planejado um trabalho de atualiza\u00e7\u00e3o da assinatura digital DNSEC para o dom\u00ednio de primeiro n\u00edvel '.gov', realizado no \u00e2mbito da transi\u00e7\u00e3o para chaves criptogr\u00e1ficas baseadas no algoritmo ECDSA. Para assinar a zona '.gov' no DNSSEC, recentemente passaram a ser utilizados os algoritmos 8 (RSA\/SHA-256) e 13 (ECDSA P-256\/SHA-256), mas o algoritmo 8 continua ativo. Nos finais de semana, estava previsto adicionar um registro DS para o algoritmo 13 na zona raiz, ap\u00f3s o que o processo de remo\u00e7\u00e3o do registro DS para o algoritmo 8 come\u00e7aria. Uma substitui\u00e7\u00e3o semelhante estava prevista para o dom\u00ednio '.int'. Como resultado, os registros DS relacionados ao suporte ao algoritmo 13 para a raiz servidores<\/a> foram enviados \u00e0 IANA, mas n\u00e3o foram publicados, pois ap\u00f3s a detec\u00e7\u00e3o de problemas o processo de substitui\u00e7\u00e3o das chaves foi suspenso at\u00e9 que a situa\u00e7\u00e3o com o servidor raiz 'C' fosse esclarecida. <\/p>\n O funcionamento do servidor DNS raiz 'C' \u00e9 garantido, com base em acordos com a corpora\u00e7\u00e3o ICANN, pelo provedor de backbone de n\u00edvel 1 (Tier 1) Cogent Communications, presente em 53 pa\u00edses. Alguns dias antes do incidente, foram observados problemas de acesso da rede Cogent Communications a 1575 sistemas aut\u00f4nomos devido \u00e0 interrup\u00e7\u00e3o do peering com o provedor de n\u00edvel 1 indiano Tata Communications. <\/p>\n A raz\u00e3o para a interrup\u00e7\u00e3o da recep\u00e7\u00e3o de atualiza\u00e7\u00f5es da zona DNS raiz \u00e9 chamada de falha no sistema de monitoramento respons\u00e1vel por rastrear mudan\u00e7as. A falha ocorreu ap\u00f3s a altera\u00e7\u00e3o de roteamento, n\u00e3o relacionada ao funcionamento dos servidores DNS (informa\u00e7\u00f5es detalhadas sobre as causas ainda n\u00e3o foram fornecidas). Al\u00e9m da desincroniza\u00e7\u00e3o, n\u00e3o foram registradas viola\u00e7\u00f5es no processamento de consultas ao servidor DNS raiz \"C\". A sincroniza\u00e7\u00e3o foi completamente restaurada em 22 de maio \u00e0s 19 horas (MSK). Entre os problemas potenciais que poderiam surgir durante o processo prolongado de desincroniza\u00e7\u00e3o, destaca-se a possibilidade de fornecimento de dados obsoletos sobre as chaves utilizadas no DNSSEC e os endere\u00e7os dos servidores DNS que atendem. dom\u00ednios<\/a> o primeiro n\u00edvel. \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\udd47Um dos servidores DNS raiz ficou em estado de desincroniza\u00e7\u00e3o 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"