{"id":1752,"date":"2021-07-23T12:46:48","date_gmt":"2021-07-23T10:46:48","guid":{"rendered":"https:\/\/www.infordisa.com\/soc\/?post_type=glossary&p=1752"},"modified":"2021-08-03T08:50:18","modified_gmt":"2021-08-03T06:50:18","slug":"dos","status":"publish","type":"glossary","link":"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/dos\/","title":{"rendered":"DOS"},"content":{"rendered":"

En seguridad informática, un ataque de denegación de servicio<\/a><\/b>, llamado también ataque DoS<\/b> (por sus siglas en inglés, D<\/b>enial o<\/b>f S<\/b>ervice<\/i>), es un ataque a un sistema de computadoras o red que causa que un servicio o recurso sea inaccesible a los usuarios legítimos.<\/sup> Normalmente provoca la pérdida de la conectividad con la red por el consumo del ancho de banda de la red de la víctima o sobrecarga de los recursos computacionales del sistema atacado.<\/p>\n

Un ejemplo notable de ello se produjo el 27 de marzo de 2013, cuando el ataque de una empresa a otra inundó la red de correos basura provocando una ralentización general de Internet e incluso llegó a afectar a puntos clave como el nodo central de Londres.<\/sup>​<\/p>\n

Los ataques DoS se generan mediante la saturación de los puertos con múltiples flujos de información, haciendo que el servidor<\/a> se sobrecargue y no pueda seguir prestando su servicio. Por eso se le denomina denegación<\/i>, pues hace que el servidor no pueda atender la cantidad enorme de solicitudes. Esta técnica es usada por los crackers<\/i> o piratas informáticos para dejar fuera de servicio servidores objetivo. A nivel global, este problema ha ido creciendo, en parte por la mayor facilidad para crear ataques y también por la mayor cantidad de equipos disponibles mal configurados o con fallos de seguridad que son explotados para generar estos ataques. Se ve un aumento en los ataques por reflexión y de amplificación por sobre el uso de botnets.<\/sup>​<\/p>\n

Una ampliación del ataque DoS es el llamado ataque de denegación de servicio distribuido<\/b>, también llamado DDoS<\/b> (por sus siglas en inglés, D<\/b>istributed D<\/b>enial o<\/b>f S<\/b>ervice<\/i>) el cual se lleva a cabo generando un gran flujo de información desde varios puntos de conexión hacia un mismo punto de destino. La forma más común de realizar un DDoS es a través de una red de bots, siendo esta técnica el ciberataque más usual y eficaz por su sencillez tecnológica.<\/p>\n

En ocasiones, esta herramienta ha sido utilizada como un buen método para comprobar la capacidad de tráfico que un ordenador puede soportar sin volverse inestable y afectar los servicios que presta. Un administrador de redes puede así conocer la capacidad real de cada máquina.<\/p>\n

\"Diagrama<\/a>
Diagrama de un ataque DDoS usando el software Stacheldraht<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Ataque de denegación de servicio<\/a>, llamado también ataque DoS, es un ataque a un sistema de computadoras o red que causa que un servicio o recurso sea inaccesible a los usuarios legítimos.​<\/p>\n","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-1752","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"DoS - Infordisa \/ Security Operations Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.infordisa.com\/soc\/ca\/glossari-definicio\/dos\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DoS - Infordisa \/ Security Operations Center\" \/>\n<meta property=\"og:description\" content=\"Ataque de denegación de servicio, llamado también ataque DoS, es un ataque a un sistema de computadoras o red que causa que un servicio o recurso sea inaccesible a los usuarios legítimos.​\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.infordisa.com\/soc\/ca\/glossari-definicio\/dos\/\" \/>\n<meta property=\"og:site_name\" content=\"Infordisa \/ Security Operations Center\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/infordisa\/\" \/>\n<meta property=\"article:modified_time\" content=\"2021-08-03T06:50:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.infordisa.com\/soc\/wp-content\/uploads\/2021\/07\/Diagrama-de-un-ataque-DDoS-usando-el-software-Stacheldraht-212x300.gif\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@infordisa\" \/>\n<meta name=\"twitter:label1\" content=\"Temps estimat de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minuts\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.infordisa.com\\\/soc\\\/glosario-definicion\\\/dos\\\/\",\"url\":\"https:\\\/\\\/www.infordisa.com\\\/soc\\\/glosario-definicion\\\/dos\\\/\",\"name\":\"DoS - 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