{"id":167,"date":"2022-11-14T14:10:05","date_gmt":"2022-11-14T13:10:05","guid":{"rendered":"https:\/\/cristian-perez.com\/?p=167"},"modified":"2022-11-14T14:10:06","modified_gmt":"2022-11-14T13:10:06","slug":"redes-dmz","status":"publish","type":"post","link":"https:\/\/cristian-perez.com\/en\/redes-dmz\/","title":{"rendered":"DMZ networks"},"content":{"rendered":"
\n
\"\"<\/figure>\n<\/div>\n\n\n

De la \u00faltima entrada<\/a>, hemos establecido que una de las defensas m\u00e1s utilizadas, son las redes DMZ, \u00bfpero qu\u00e9 son exactamente? Pues seg\u00fan la Wikipedia<\/a>:\u00a0<\/p>\n\n\n\n

\n

\u201cEn<\/em> <\/em>seguridad inform\u00e1tica<\/em><\/a>, una <\/em>zona desmilitarizada<\/em><\/strong> (conocida tambi\u00e9n como <\/em>DMZ<\/em><\/strong>, sigla en ingl\u00e9s de demilitarized zone) o <\/em>red perimetral<\/em><\/strong> es una<\/em> <\/em>red<\/em><\/a> local que se ubica entre la red interna de una organizaci\u00f3n y una red externa, generalmente en<\/em> <\/em>Internet<\/em><\/a>. El objetivo de una DMZ es que las conexiones desde la red externa a la DMZ est\u00e9n permitidas, mientras que en general las conexiones desde la DMZ no se permitan a la red interna (los<\/em> <\/em>equipos<\/em><\/a> de la DMZ no deben conectarse directamente con la red interna). Esto permite que los equipos de la DMZ puedan dar servicios a la red externa, a la vez que protegen la red interna en el caso de que unos intrusos comprometan la seguridad de los equipos situados en la zona desmilitarizada. Para cualquiera de la red externa que quiera conectarse ilegalmente a la red interna, la zona desmilitarizada se convierte en un callej\u00f3n sin salida. <\/em>\u201c<\/p>\n<\/blockquote>\n\n\n\n

\u00bfQu\u00e9 quiere decir esto?<\/p>\n\n\n\n

Pues que impide un acceso directo a las redes internas de control y supervisi\u00f3n de nuestros equipos industriales, evitando as\u00ed gran n\u00famero de posibles ataques.<\/p>\n\n\n

\n
\"\"\/
Fuente: INCIBE<\/figcaption><\/figure>\n<\/div>\n\n\n

Adem\u00e1s de crear este tipo de red, es imprescindible contar con un Firewall.<\/p>\n\n\n\n

Un Firewall es un elemento que filtra el tr\u00e1fico saliente y entrante, que permitir\u00e1 su tr\u00e1fico o no seg\u00fan unas reglas establecidas por la organizaci\u00f3n.<\/p>\n\n\n\n

Pueden ser equipos dedicados, o software instalado en nuestros Sistemas Operativos, siendo los equipos dedicados los que tienen mayor capacidad de procesamiento, aunque su coste econ\u00f3mico sea mayor.<\/p>\n\n\n\n

Como norma general en una red DMZ, las conexiones procedentes de internet y de la red local, est\u00e1n permitidas. Pero no lo est\u00e1n de la red DMZ a la red local, evitando as\u00ed que los servidores de la red local se vean comprometidos desde el exterior.<\/p>\n\n\n

\n
\"\"\/
Fuente: INCIBE<\/figcaption><\/figure>\n<\/div>\n\n\n

La siguiente imagen muestra un ejemplo de tr\u00e1fico permitido y denegado por el firewall:<\/p>\n\n\n

\n
\"\"\/
Fuente INCIBE<\/figcaption><\/figure>\n<\/div>\n\n\n

Para aumentar a\u00fan m\u00e1s la seguridad se suele usar un sistema de firewall dual, uno que est\u00e1 entre internet y la DMZ, y otro entre la DMZ y la red local. El primero llamado \u201cfront-end\u201d y el segundo \u201cback-end\u201d<\/p>\n\n\n\n

Y as\u00ed b\u00e1sicamente protegeremos nuestra red local. En el siguiente post repasaremos otros conceptos de ciberseguridad industrial.<\/p>","protected":false},"excerpt":{"rendered":"

What is a DMZ network and what is it used for?
\nWe will see how we can use systems to give greater security to our network.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[24,59,60],"class_list":["post-167","post","type-post","status-publish","format-standard","hentry","category-articulo","tag-ciberseguridad","tag-dmz","tag-redes"],"yoast_head":"\nRedes DMZ - Cristian Perez<\/title>\n<meta name=\"description\" content=\"Cristian Perez Redes DMZ Art\u00edculo\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cristian-perez.com\/en\/redes-dmz\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Redes DMZ - Cristian Perez\" \/>\n<meta property=\"og:description\" content=\"Cristian Perez Redes DMZ Art\u00edculo\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cristian-perez.com\/en\/redes-dmz\/\" \/>\n<meta property=\"og:site_name\" content=\"Cristian Perez\" \/>\n<meta property=\"article:published_time\" content=\"2022-11-14T13:10:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-14T13:10:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cristian-perez.com\/wp-content\/uploads\/2022\/11\/imagen.png\" \/>\n<meta name=\"author\" content=\"Cristian P\u00e9rez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Cristian P\u00e9rez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/cristian-perez.com\/redes-dmz\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/cristian-perez.com\/redes-dmz\/\"},\"author\":{\"name\":\"Cristian P\u00e9rez\",\"@id\":\"https:\/\/cristian-perez.com\/#\/schema\/person\/7d97cc065f256a22ec12e1879176b989\"},\"headline\":\"Redes DMZ\",\"datePublished\":\"2022-11-14T13:10:05+00:00\",\"dateModified\":\"2022-11-14T13:10:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/cristian-perez.com\/redes-dmz\/\"},\"wordCount\":418,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/cristian-perez.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/cristian-perez.com\/redes-dmz\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cristian-perez.com\/wp-content\/uploads\/2022\/11\/imagen.png\",\"keywords\":[\"ciberseguridad\",\"dmz\",\"redes\"],\"articleSection\":[\"Art\u00edculo\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/cristian-perez.com\/redes-dmz\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cristian-perez.com\/redes-dmz\/\",\"url\":\"https:\/\/cristian-perez.com\/redes-dmz\/\",\"name\":\"Redes DMZ - 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