{"id":141415,"date":"2023-05-04T07:12:00","date_gmt":"2023-05-04T07:12:00","guid":{"rendered":"https:\/\/alliedtelesisprod.smmile.com\/?p=141415"},"modified":"2026-05-29T18:05:06","modified_gmt":"2026-05-29T18:05:06","slug":"sdn-based-micro-segmentation-ot-networks","status":"publish","type":"post","link":"https:\/\/alliedtelesisprod.smmile.com\/fr\/sdn-based-micro-segmentation-ot-networks\/","title":{"rendered":"Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT"},"content":{"rendered":"<h3>Technologie op\u00e9rationnelle (OT)<\/h3>\n<p>L&#8217;int\u00e9gration de l&#8217;IoT industriel et de l&#8217;intelligence de l&#8217;industrie 4.0 implique la convergence des technologies de l&#8217;information (IT) et des technologies op\u00e9rationnelles (OT) pour relier les flux d&#8217;informations de l&#8217;entreprise et de l&#8217;industrie. Par cons\u00e9quent, les r\u00e9seaux OT sont souvent connect\u00e9s aux r\u00e9seaux informatiques, ce qui les rend vuln\u00e9rables aux cyberattaques. Une faille de s\u00e9curit\u00e9 dans un r\u00e9seau OT peut entra\u00eener des dommages physiques, des arr\u00eats de production et des pertes financi\u00e8res. Dans ce blog, nous discuterons de l&#8217;importance de la s\u00e9curit\u00e9 dans les r\u00e9seaux OT et expliquerons pourquoi la micro-segmentation est un moyen id\u00e9al de s\u00e9curiser ces r\u00e9seaux.<\/p>\n<p class=\"mb-2\">Les r\u00e9seaux OT sont couramment utilis\u00e9s pour contr\u00f4ler et surveiller les processus physiques dans les secteurs de la fabrication, des transports et de l&#8217;\u00e9nergie. Les cyber-attaques sur les r\u00e9seaux OT peuvent avoir les cons\u00e9quences suivantes :<\/p>\n<ul>\n<li>Dommages physiques aux \u00e9quipements qui entra\u00eenent des r\u00e9parations co\u00fbteuses et des arr\u00eats de production.<\/li>\n<li>Perturbation des processus contr\u00f4l\u00e9s par les r\u00e9seaux OT, entra\u00eenant des retards et des arr\u00eats de production.<\/li>\n<li>Risques pour la s\u00e9curit\u00e9 des employ\u00e9s et du public.<\/li>\n<\/ul>\n<h3>Qu&#8217;est-ce que la segmentation du r\u00e9seau ?<\/h3>\n<p>La segmentation peut att\u00e9nuer ces menaces en isolant les syst\u00e8mes critiques des autres parties du r\u00e9seau. Il s&#8217;agit d&#8217;une approche de la s\u00e9curit\u00e9 des r\u00e9seaux qui permet aux organisations de cr\u00e9er des zones s\u00e9curis\u00e9es au sein de leurs r\u00e9seaux afin de prot\u00e9ger les donn\u00e9es et les applications sensibles. La micro-segmentation divise le r\u00e9seau en sections plus petites, les isole et applique des politiques de communication strictes entre les appareils. Cette approche emp\u00eache les attaquants de se d\u00e9placer lat\u00e9ralement au sein du r\u00e9seau, ce qui limite les d\u00e9g\u00e2ts en cas d&#8217;intrusion.<\/p>\n<h4>Avantages de la micro-segmentation<\/h4>\n<p>La micro-segmentation am\u00e9liore la posture de s\u00e9curit\u00e9 du r\u00e9seau OT en fournissant une couche de s\u00e9curit\u00e9 suppl\u00e9mentaire pour se prot\u00e9ger contre les attaques. Elle permet aux administrateurs de r\u00e9seau de mettre en \u0153uvre des contr\u00f4les d&#8217;acc\u00e8s granulaires et de restreindre l&#8217;acc\u00e8s \u00e0 des zones sp\u00e9cifiques du r\u00e9seau.<\/p>\n<p>La micro-segmentation r\u00e9duit \u00e9galement la surface d&#8217;attaque en limitant le nombre de points d&#8217;acc\u00e8s au r\u00e9seau pour les attaquants. En isolant les applications et les donn\u00e9es au sein de segments individuels, m\u00eame si un segment est viol\u00e9, le reste du r\u00e9seau reste s\u00e9curis\u00e9, prot\u00e9geant ainsi les actifs critiques des cybermenaces. L&#8217;extension de la micro-segmentation de l&#8217;infrastructure du r\u00e9seau au point d&#8217;extr\u00e9mit\u00e9 est la meilleure approche pour contenir le mouvement lat\u00e9ral du pirate.<\/p>\n<p>Les normes de conformit\u00e9 telles que la protection des infrastructures critiques (CIP) de la North American Electric Reliability Corporation (NERC) exigent la mise en \u0153uvre de mesures de s\u00e9curit\u00e9 telles que la segmentation. La micro-segmentation aide les organisations \u00e0 se conformer \u00e0 ces exigences.<\/p>\n<p>La d\u00e9tection et la r\u00e9ponse aux incidents de s\u00e9curit\u00e9 sont facilit\u00e9es par la micro-segmentation en raison de la meilleure visibilit\u00e9 du trafic r\u00e9seau. En cas d&#8217;attaque, la micro-segmentation permet une d\u00e9tection plus rapide car la menace a beaucoup plus de fronti\u00e8res de s\u00e9curit\u00e9 \u00e0 franchir, ce qui ralentit la propagation de l&#8217;attaque.<\/p>\n<p>La s\u00e9curit\u00e9 par micro-segmentation offre \u00e9galement une certaine souplesse dans la gestion des r\u00e9seaux OT en permettant aux administrateurs de r\u00e9seau de g\u00e9rer les politiques de s\u00e9curit\u00e9 de mani\u00e8re centralis\u00e9e et d&#8217;apporter rapidement des modifications pour s&#8217;adapter \u00e0 l&#8217;\u00e9volution des conditions du r\u00e9seau.<\/p>\n<p>Cependant, la micro-segmentation ajoute des frais g\u00e9n\u00e9raux importants \u00e0 l&#8217;administration du r\u00e9seau et, au fur et \u00e0 mesure que les r\u00e9seaux sont mis \u00e0 jour et \u00e9tendus, la s\u00e9curit\u00e9 d&#8217;une strat\u00e9gie de micro-segmentation administr\u00e9e manuellement se d\u00e9t\u00e9riorera in\u00e9vitablement.<\/p>\n<h3>R\u00e9seaux d\u00e9finis par logiciel (SDN)<\/h3>\n<p>Le r\u00e9seau d\u00e9fini par logiciel (SDN) est une architecture de r\u00e9seau qui s\u00e9pare le plan de contr\u00f4le du r\u00e9seau du plan de donn\u00e9es. Cette s\u00e9paration permet aux administrateurs de r\u00e9seau de g\u00e9rer de mani\u00e8re centralis\u00e9e les flux de trafic et les politiques de s\u00e9curit\u00e9 via une application logicielle. Avec le SDN, le r\u00e9seau est facilement divis\u00e9 en segments logiques plus petits, \u00e9galement appel\u00e9s r\u00e9seaux virtuels. Chaque r\u00e9seau virtuel peut \u00eatre isol\u00e9 des autres r\u00e9seaux virtuels et peut avoir ses propres politiques de s\u00e9curit\u00e9.<\/p>\n<p class=\"mb-2\">Voici comment les r\u00e9seaux d\u00e9finis par logiciel permettent la micro-segmentation :<\/p>\n<ul>\n<li>Les administrateurs peuvent utiliser le SDN pour d\u00e9finir des politiques qui contr\u00f4lent le trafic r\u00e9seau entre les r\u00e9seaux virtuels (segments). Les politiques sont bas\u00e9es sur des param\u00e8tres tels que l&#8217;identit\u00e9 de l&#8217;utilisateur, le type d&#8217;appareil, le type d&#8217;application et l&#8217;emplacement. Elles garantissent que seul le trafic autoris\u00e9 peut circuler entre les r\u00e9seaux virtuels.<\/li>\n<li>Le SDN permet d&#8217;allouer dynamiquement les ressources du r\u00e9seau en fonction des politiques d\u00e9finies par les administrateurs. Cette allocation dynamique garantit que les r\u00e9seaux virtuels sont isol\u00e9s les uns des autres et disposent des ressources n\u00e9cessaires pour fonctionner correctement.<\/li>\n<li>Le SDN offre une visibilit\u00e9 en temps r\u00e9el du trafic r\u00e9seau, ce qui permet aux administrateurs de surveiller les sch\u00e9mas de trafic et de d\u00e9tecter les anomalies. Cette visibilit\u00e9 est essentielle pour identifier les menaces potentielles \u00e0 la s\u00e9curit\u00e9 et y r\u00e9pondre rapidement.<\/li>\n<li>Le SDN simplifie l&#8217;administration, m\u00eame sur les grands r\u00e9seaux, et garantit que les politiques de s\u00e9curit\u00e9 sont automatiquement appliqu\u00e9es chaque fois que le r\u00e9seau est modifi\u00e9, mis \u00e0 niveau ou \u00e9tendu. Ainsi, la force de la strat\u00e9gie de s\u00e9curit\u00e9 par micro-segmentation est maintenue tout au long de la vie du r\u00e9seau.<\/li>\n<\/ul>\n<h3>Conclusion<\/h3>\n<p>La s\u00e9curisation des r\u00e9seaux OT est essentielle au fonctionnement s\u00fbr et efficace de nombreuses industries. Les cyber-attaques sur les r\u00e9seaux OT peuvent entra\u00eener des dommages physiques, des arr\u00eats de production et des pertes financi\u00e8res. La mise en \u0153uvre d&#8217;une micro-segmentation bas\u00e9e sur le SDN peut aider les organisations \u00e0 prot\u00e9ger les actifs critiques, \u00e0 se conformer aux r\u00e9glementations, \u00e0 renforcer la s\u00e9curit\u00e9 des r\u00e9seaux OT, \u00e0 fournir une meilleure visibilit\u00e9 sur le trafic r\u00e9seau et \u00e0 am\u00e9liorer la flexibilit\u00e9 dans la gestion des r\u00e9seaux OT.<\/p>\n<p>L&#8217;Open Networking Foundation certifie que les commutateurs industriels d&#8217;Allied Telesis sont conformes \u00e0 OpenFlow (OpenFlow est un protocole fondamental requis pour les applications SDN). Par cons\u00e9quent, Veracity recommande l&#8217;utilisation de ces commutateurs avec son <a href=\"https:\/\/veracity.io\/product\/\">contr\u00f4leur SDN Micro-Segmentation<\/a> \u2013 une solution de pointe pour la s\u00e9curit\u00e9 du r\u00e9seau OT.<\/p>\n<p>Voir notre gamme de commutateurs Ethernet industriels <a data-entity-substitution=\"canonical\" data-entity-type=\"node\" data-entity-uuid=\"fe13a1f3-f305-464c-a8b1-b126bd6a30ce\" href=\"https:\/\/alliedtelesisprod.smmile.com\/fr\/products\/switches\/industrial\/\">ici<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Technologie op\u00e9rationnelle (OT) L&#8217;int\u00e9gration de l&#8217;IoT industriel et de l&#8217;intelligence de l&#8217;industrie 4.0 implique la convergence des technologies de l&#8217;information (IT) et des technologies op\u00e9rationnelles (OT) pour relier les flux d&#8217;informations de l&#8217;entreprise et de l&#8217;industrie. Par cons\u00e9quent, les r\u00e9seaux OT sont souvent connect\u00e9s aux r\u00e9seaux informatiques, ce qui les rend vuln\u00e9rables aux cyberattaques. Une [&hellip;]<\/p>\n","protected":false},"author":51,"featured_media":139320,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"location":[],"markets":[7280,7278],"partners":[],"posttype":[7993],"products":[8012],"services":[],"solutions":[8166,8174],"site_tags":[],"technologies":[8195],"class_list":["post-141415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","markets-energyutilities","markets-manufacturingindustrial","posttype-blogpost","products-industrialswitches","solutions-cybersecurity","solutions-industrialsolutions","technologies-softwaredefinednetworking"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT - Allied Telesis<\/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:\/\/alliedtelesisprod.smmile.com\/sdn-based-micro-segmentation-ot-networks\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT - Allied Telesis\" \/>\n<meta property=\"og:description\" content=\"Technologie op\u00e9rationnelle (OT) L&#8217;int\u00e9gration de l&#8217;IoT industriel et de l&#8217;intelligence de l&#8217;industrie 4.0 implique la convergence des technologies de l&#8217;information (IT) et des technologies op\u00e9rationnelles (OT) pour relier les flux d&#8217;informations de l&#8217;entreprise et de l&#8217;industrie. Par cons\u00e9quent, les r\u00e9seaux OT sont souvent connect\u00e9s aux r\u00e9seaux informatiques, ce qui les rend vuln\u00e9rables aux cyberattaques. Une [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/alliedtelesisprod.smmile.com\/fr\/sdn-based-micro-segmentation-ot-networks\/\" \/>\n<meta property=\"og:site_name\" content=\"Allied Telesis\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-04T07:12:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-29T18:05:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/alliedtelesisprod.smmile.com\/wp-content\/uploads\/2023\/05\/security-shields-3840_0-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Andika\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andika\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/\"},\"author\":{\"name\":\"Andika\",\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/#\\\/schema\\\/person\\\/71414a3f2a8037cb4932370d647f0300\"},\"headline\":\"Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT\",\"datePublished\":\"2023-05-04T07:12:00+00:00\",\"dateModified\":\"2026-05-29T18:05:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/\"},\"wordCount\":1201,\"publisher\":{\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/wp-content\\\/uploads\\\/2023\\\/05\\\/security-shields-3840_0-scaled.jpg\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/\",\"url\":\"https:\\\/\\\/alliedtelesisprod.smmile.com\\\/fr\\\/sdn-based-micro-segmentation-ot-networks\\\/\",\"name\":\"Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT - 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Allied Telesis","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/alliedtelesisprod.smmile.com\/sdn-based-micro-segmentation-ot-networks\/","og_locale":"en_US","og_type":"article","og_title":"Micro-segmentation bas\u00e9e sur le SDN pour les r\u00e9seaux OT - Allied Telesis","og_description":"Technologie op\u00e9rationnelle (OT) L&#8217;int\u00e9gration de l&#8217;IoT industriel et de l&#8217;intelligence de l&#8217;industrie 4.0 implique la convergence des technologies de l&#8217;information (IT) et des technologies op\u00e9rationnelles (OT) pour relier les flux d&#8217;informations de l&#8217;entreprise et de l&#8217;industrie. Par cons\u00e9quent, les r\u00e9seaux OT sont souvent connect\u00e9s aux r\u00e9seaux informatiques, ce qui les rend vuln\u00e9rables aux cyberattaques. 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