{"id":41973,"date":"2017-09-13T00:00:00","date_gmt":"2017-09-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/zashhita-servera-ot-ddos-atak"},"modified":"2020-02-18T13:44:45","modified_gmt":"2020-02-18T10:44:45","slug":"zashhita-servera-ot-ddos-atak","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/zashhita-ot-ddos-atak\/zashhita-servera-ot-ddos-atak","title":{"rendered":"Prote\u00e7\u00e3o do servidor contra ataques DDoS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Se o seu site tem car\u00e1ter pol\u00edtico, aceita pagamentos pela internet ou se voc\u00ea est\u00e1 conduzindo um neg\u00f3cio lucrativo \u2013 Ataque DDoS<\/strong> pode acontecer a qualquer momento. O termo DDoS pode ser traduzido do ingl\u00eas como \"ataque distribu\u00eddo de nega\u00e7\u00e3o de servi\u00e7o\". E a prote\u00e7\u00e3o do servidor web contra ataques DDoS<\/a> \u00e9 a parte mais importante de uma hospedagem de qualidade.<\/p>\n

Simplificando, Ataque DDoS<\/strong> \u00e9 a sobrecarga do servidor, de modo que ele n\u00e3o consegue atender os visitantes. Os hackers controlam uma rede de computadores e enviam para o servidor alvo uma quantidade enorme de solicita\u00e7\u00f5es vazias. O tamanho do botnet pode variar de algumas dezenas a v\u00e1rias centenas de milhares de computadores. O servidor \u00e9 for\u00e7ado a responder a todas as solicita\u00e7\u00f5es, n\u00e3o consegue lidar com a carga e cai.<\/p>\n

\"\"<\/p>\n

Sistemas de prote\u00e7\u00e3o de servidores contra ataques DDoS<\/h2>\n

\u00c9 poss\u00edvel combater ataques DDoS<\/strong> por meio de m\u00e9todos de hardware. Para isso, conectam-se firewalls ao equipamento do servidor, que decidem se o tr\u00e1fego deve ser liberado ou n\u00e3o. Em seu firmware, est\u00e3o algoritmos que identificam a maioria dos ataques. Se a pot\u00eancia do ataque n\u00e3o exceder os valores definidos na certifica\u00e7\u00e3o, o equipamento funcionar\u00e1 normalmente. A desvantagem \u00e9 a largura de banda limitada e a dificuldade em redistribuir o tr\u00e1fego.<\/p>\n

Uma abordagem mais popular<\/strong> \u00e9 o uso de redes de filtragem. Como o tr\u00e1fego \u00e9 gerado por botnets, usar v\u00e1rios computadores para combater o tr\u00e1fego vazio \u00e9 a solu\u00e7\u00e3o mais otimizada. A rede absorve o tr\u00e1fego, filtra-o e somente o tr\u00e1fego verificado e de qualidade de usu\u00e1rios reais chega ao servidor alvo. A principal vantagem dessa abordagem \u00e9 a possibilidade de configurar a prote\u00e7\u00e3o de forma flex\u00edvel. Hackers avan\u00e7ados j\u00e1 aprenderam a mascarar o tr\u00e1fego malicioso como se fosse tr\u00e1fego de visitantes normais. Somente um especialista experiente em seguran\u00e7a da informa\u00e7\u00e3o pode reconhecer o tr\u00e1fego ruim.<\/p>\n

Para proteger contra esses ataques, provedores e empresas de hospedagem criam redes que processam e filtram o tr\u00e1fego. Em \u00faltima inst\u00e2ncia, \u00e9 poss\u00edvel conectar-se a nodos de limpeza de tr\u00e1fego de terceiros.<\/p>\n

A arquitetura da rede consiste em tr\u00eas camadas: roteamento, camada de processamento de pacotes e camada de aplica\u00e7\u00f5es. No n\u00edvel de roteamento, o fluxo \u00e9 distribu\u00eddo de forma equilibrada entre os n\u00f3s da rede gra\u00e7as a roteadores superpotentes. No n\u00edvel de processamento de pacotes, v\u00e1rios dispositivos de reserva filtram o tr\u00e1fego de entrada com algoritmos especiais. No n\u00edvel das aplica\u00e7\u00f5es, ocorre a criptografia, descriptografia e processamento de solicita\u00e7\u00f5es. Se necess\u00e1rio, \u00e9 poss\u00edvel ler relat\u00f3rios sobre a pot\u00eancia e dura\u00e7\u00e3o dos ataques, bem como relat\u00f3rios sobre a limpeza.<\/p>\n

Empresa A ProHoster garantir\u00e1 a prote\u00e7\u00e3o do seu site<\/a> contra ataques DDoS com pot\u00eancia de at\u00e9 1,2 Tb\/s. Para cada tipo de servidor, modelos b\u00e1sicos de prote\u00e7\u00e3o contra os tipos mais simples de ataques DDoS s\u00e3o constru\u00eddos por padr\u00e3o.<\/em> Para quest\u00f5es sobre a prote\u00e7\u00e3o do servidor web contra ataques DDoS<\/a> entre em nosso suporte t\u00e9cnico. N\u00e3o espere at\u00e9 que seu servidor caia \u2013 proteja-o j\u00e1 hoje!<\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":41974,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[698],"tags":[],"class_list":["post-41973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zashhita-ot-ddos-atak"],"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\udd47 Prote\u00e7\u00e3o do servidor web contra ataques DDoS do sistema de prote\u00e7\u00e3o de servidores | ProHoster","description":"Se o seu site tem car\u00e1ter pol\u00edtico, aceita pagamentos pela Internet ou se voc\u00ea est\u00e1 gerenciando um neg\u00f3cio lucrativo \u2013 um ataque DDoS pode ocorrer a qualquer 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