{"id":19014,"date":"2024-01-30T11:29:31","date_gmt":"2024-01-30T11:29:31","guid":{"rendered":"https:\/\/made4it.com.br\/blog\/que-es-flowspec-como-utilizar-flowspec-para-mitigar-los-ataques-ddos\/"},"modified":"2026-07-01T15:10:29","modified_gmt":"2026-07-01T15:10:29","slug":"que-es-flowspec-como-utilizar-flowspec-para-mitigar-los-ataques-ddos","status":"publish","type":"post","link":"https:\/\/made4it.com.br\/es\/blog\/que-es-flowspec-como-utilizar-flowspec-para-mitigar-los-ataques-ddos\/","title":{"rendered":"\u00bfQu\u00e9 es FlowSpec? C\u00f3mo utilizar FlowSpec para mitigar los ataques DDoS?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Hoy vamos a hablar un poco sobre BGP Flowspec y su eficacia para mitigar los ataques DDoS.  <\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u00bfQu\u00e9 es Flowspec?<\/strong> <\/h2>\n\n<p class=\"wp-block-paragraph\"><strong>BGP Flow Specification (Flowspec)<\/strong> se define en <strong>RFC 5575<\/strong><em>(Dissemination of Flow Specification Rules)<\/em>,<em> <\/em>define c\u00f3mo se utiliza <strong>Flowspec<\/strong> para distribuir reglas de flujo a trav\u00e9s del protocolo BGP.  <\/p>\n\n<p class=\"wp-block-paragraph\">B\u00e1sicamente, <strong>Flowspec<\/strong> es una extensi\u00f3n del protocolo BGP que permite a los enrutadores aplicar reglas, como listas de control de acceso din\u00e1micas o reglas de cortafuegos din\u00e1micas, a tipos espec\u00edficos de tr\u00e1fico. Estas reglas pueden basarse en diversos criterios, entre los que se incluyen el origen, el destino, el protocolo, el puerto, etc.   <\/p>\n\n<p class=\"wp-block-paragraph\">A continuaci\u00f3n se muestra una tabla con todas las posibilidades de clasificaci\u00f3n del tr\u00e1fico Flowspec:  <\/p>\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>BGP Flowspec NLRI Type<\/strong> <\/td><td><strong>QoS Match Fields<\/strong> <\/td><\/tr><tr><td>Type 1 <\/td><td>Destination IP \/ IPv6 address <\/td><\/tr><tr><td>Type 2 <\/td><td>Source IP \/ IPv6 address <\/td><\/tr><tr><td>Type 3 <\/td><td>IP \/ IPv6 Protocol <\/td><\/tr><tr><td>Type 4 <\/td><td>Source or destination port <\/td><\/tr><tr><td>Type 5 <\/td><td>Destination port <\/td><\/tr><tr><td>Type 6 <\/td><td>Source port <\/td><\/tr><tr><td>Type 7 <\/td><td>ICMP Type <\/td><\/tr><tr><td>Type 8 <\/td><td>ICMP Code <\/td><\/tr><tr><td>Type 9 <\/td><td>TCP flags <\/td><\/tr><tr><td>Type 10 <\/td><td>Packet length <\/td><\/tr><tr><td>Type 11 <\/td><td>DSCP  <\/td><\/tr><tr><td>Type 12 <\/td><td>Fragmentation bits <\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">Estos tipos de clasificaci\u00f3n tambi\u00e9n pueden combinarse, por ejemplo:  <\/p>\n\n<p class=\"wp-block-paragraph\">Flujo con origen 8.8.8.8\/32 puerto UDP 53.  <\/p>\n\n<p class=\"wp-block-paragraph\">Bas\u00e1ndonos en las clasificaciones de tr\u00e1fico anteriores (de la tabla o una combinaci\u00f3n de ellas como en el ejemplo), podemos tomar las siguientes medidas:  <\/p>\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Type<\/strong> <\/td><td><strong>Description<\/strong> <\/td><td><strong>PBR Action<\/strong> <\/td><\/tr><tr><td>0x8006 <\/td><td>traffic-rate <\/td><td>Drop | Police <\/td><\/tr><tr><td>0x8007 <\/td><td>traffic-action <\/td><td>Terminal Action + Sampling <\/td><\/tr><tr><td>0x8008  <\/td><td>redirect-vrf  <\/td><td>Redirigir VRF  <\/td><\/tr><tr><td>0x8009  <\/td><td>traffic-marking <\/td><td>Set DSCP <\/td><\/tr><tr><td>0x0800 <\/td><td>Redirect IP NH <\/td><td>Redirect IPv4 or IPv6 Next-Hop <\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\"><strong>\u00bfC\u00f3mo funciona Flowspec?<\/strong> <\/h2>\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a60051e71713&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a60051e71713\" class=\"wp-block-image size-full is-style-default wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/made4it.com.br\/wp-content\/uploads\/2024\/01\/1-3.png\" alt=\"&#xBF;Qu&#xE9; es Flowspec?  \" class=\"wp-image-13300\"\/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n<p class=\"wp-block-paragraph\">Para que <strong>FlowSpec funcione <\/strong>, es necesario establecer las sesiones BGP FlowSpec entre el router BGP designado en la topolog\u00eda de borde y el servidor o router que genera las reglas de FlowSpec, que en nuestra topolog\u00eda es nuestro software, Made4Flow.  <\/p>\n\n<p class=\"wp-block-paragraph\">De este modo, <strong>FlowSpec funciona <\/strong>enviando un mensaje BGP especial al router. Dicho mensaje contiene una lista de reglas de flujo que el router debe aplicar. Las reglas de flujo pueden aplicarse a todos los flujos que pasan por el router o solo a flujos espec\u00edficos; al igual que en una regla de cortafuegos, puede elegir a qu\u00e9 flujo desea aplicar una acci\u00f3n.    <\/p>\n\n<p class=\"wp-block-paragraph\">Si su operador o su red de tr\u00e1fico es compatible con <strong>FlowSpec<\/strong>, es importante que solicite las sesiones <strong>BGP FlowSpec<\/strong>, ya que as\u00ed podremos enviar las reglas de <strong>FlowSpec para <\/strong>que se apliquen directamente en los equipos de su operador, y, de este modo, el tr\u00e1fico malicioso no llegar\u00e1 a nuestros equipos, lo que evitar\u00e1 la sobrecarga de sus enlaces.  <\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u00bfC\u00f3mo puede ayudar FlowSpec a defenderse de los ataques DDoS?<\/strong> <\/h2>\n\n<p class=\"wp-block-paragraph\">Para utilizar <strong>FlowSpec para mitigar los ataques DDoS<\/strong>, es necesario utilizar una herramienta de detecci\u00f3n de ataques que genere reglas <strong>FlowSpec <\/strong>, como por ejemplo <strong>\n  <a href=\"https:\/\/made4flow.com.br\/es\" target=\"_blank\" rel=\"noopener\" title=\"\">Made4Flow<\/a>\n<\/strong>.  <\/p>\n\n<p class=\"wp-block-paragraph\">Cuando el <strong>analizador de red v\u00eda Netflow detecta un ataque DDoS<\/strong>, genera un mensaje BGP especial que contiene las reglas de flujo necesarias para mitigar el ataque. A continuaci\u00f3n, este mensaje se env\u00eda al router, que aplica las reglas e impide que el tr\u00e1fico malicioso llegue a su destino final, tal y como se muestra en el ejemplo siguiente, en el que vemos una regla de bloqueo para una direcci\u00f3n IP de destino y un ICMP de tipo 0 u 8:   <\/p>\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a60051e71d12&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a60051e71d12\" class=\"wp-block-image size-full is-resized wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/made4it.com.br\/wp-content\/uploads\/2024\/01\/2-3.png\" alt=\"&#xBF;Qu&#xE9; es Flowspec?  \" class=\"wp-image-13303\" style=\"width:631px;height:auto\"\/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n<p class=\"wp-block-paragraph\">Otra forma de utilizar FlowSpec <strong>para mitigar los ataques DDoS<\/strong> es utilizar <strong>FlowSpec <\/strong>para <strong>limitar la velocidad del tr\u00e1fico que puede enviarse a un destino concreto<\/strong>. Esto puede ayudar a evitar que un ataque <strong>DDoS <\/strong>sature el ancho de banda del destino, como en el ejemplo siguiente:   <\/p>\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a60051e721c9&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a60051e721c9\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/made4it.com.br\/wp-content\/uploads\/2024\/01\/3-2.png\" alt=\"&#xBF;Qu&#xE9; es Flowspec?  \" class=\"wp-image-13306\"\/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n<p class=\"wp-block-paragraph\">Como hemos visto en los ejemplos anteriores, <strong>FlowSpec env\u00eda <\/strong>reglas para descartar (drop) o bien aplicar un <strong><em>l\u00edmite de tr\u00e1fico<\/em> (control de ancho de banda)<\/strong> a los prefijos o direcciones IP atacadas. De este modo, conseguimos que el <strong>ataque DDoS no traspase nuestro router BGP\/de borde para penetrar en la red<\/strong>. Para que <strong>FlowSpec resulte m\u00e1s eficaz contra los ataques DDoS<\/strong>, es importante establecer una sesi\u00f3n <strong>BGP FlowSpec<\/strong> con sus operadores, aumentando as\u00ed la eficacia de la protecci\u00f3n; el bloqueo puede realizarse directamente en los equipos y routers de su operador, evitando que los paquetes y el tr\u00e1fico lleguen a sus equipos, lo que impide que sus routers sufran una elevada carga de CPU, una sobrecarga en los enlaces e incluso la p\u00e9rdida de comunicaci\u00f3n con sus equipos.    <\/p>\n\n<p class=\"wp-block-paragraph\">Lamentablemente, no todos los operadores ofrecen sesiones <strong>BGP FlowSpec<\/strong>. Consulte a sus operadores y, si es posible, establezca sesiones <strong>BGP FlowSpec <\/strong>para que, en caso de sufrir ataques DDoS, pueda reducir el impacto en su red y aumentar su protecci\u00f3n creando las reglas directamente en sus routers.   <\/p>\n\n<h2 class=\"wp-block-heading\">Conclusi\u00f3n<\/h2>\n\n<p class=\"wp-block-paragraph\"><strong>BGP FlowSpec<\/strong> es una herramienta eficaz que puede utilizarse para <strong>mitigar ataques DDoS de todos los tama\u00f1os<\/strong>. Con <strong>FlowSpec<\/strong>, los administradores de red pueden <strong>dirigir el tr\u00e1fico DDoS a un punto de mitigaci\u00f3n o limitar la velocidad del tr\u00e1fico que puede enviarse a un destino concreto<\/strong>.   <\/p>\n\n<p class=\"wp-block-paragraph\">Permanece atento a los pr\u00f3ximos art\u00edculos, ya que hablaremos de c\u00f3mo configurar sesiones <strong>BGP FlowSpec<\/strong> en diferentes fabricantes como <strong>Huawei, Juniper, Cisco, Nokia y varios otros modelos y marcas<\/strong>.  <\/p>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-vivid-cyan-blue-background-color has-background wp-element-button\" href=\"https:\/\/made4flow.com.br\/es\" target=\"_blank\" rel=\"noreferrer noopener\">Conozca Made4Flow<\/a><\/div>\n<\/div>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/made4it.com.br\/wp-content\/uploads\/2024\/01\/4-2.png\" alt=\"&#xBF;Qu&#xE9; es Flowspec?  \" class=\"wp-image-13309\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>B\u00e1sicamente, Flowspec es una extensi\u00f3n del protocolo BGP que permite a los enrutadores aplicar reglas, como listas de control de acceso din\u00e1micas o reglas de cortafuegos din\u00e1micas, a tipos espec\u00edficos de tr\u00e1fico. Estas reglas pueden basarse en diversos criterios, entre los que se incluyen el origen, el destino, el protocolo, el puerto, etc.   <\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[899,877,1280,1415,910,1324],"tags":[1419,911,1420],"class_list":["post-19014","post","type-post","status-publish","format-standard","hentry","category-acerca-de-made4flow","category-bgp","category-ddos","category-flowspec","category-flujo-de-red","category-made4flow","tag-flowspec","tag-made4flow","tag-que-es-flowspec"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u00bfQu\u00e9 es Flowspec? 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