{"id":17919,"date":"2025-06-03T09:46:14","date_gmt":"2025-06-03T07:46:14","guid":{"rendered":"https:\/\/www.thegreenbow.com\/?post_type=resource&#038;p=17919"},"modified":"2025-07-01T17:49:46","modified_gmt":"2025-07-01T15:49:46","slug":"3-bonnes-raisons-dutiliser-un-vpn-pour-se-conformer-a-nis2","status":"publish","type":"resource","link":"https:\/\/www.thegreenbow.com\/fr\/ressource\/blog\/3-bonnes-raisons-dutiliser-un-vpn-pour-se-conformer-a-nis2\/","title":{"rendered":"3 bonnes raisons d\u2019utiliser un VPN pour se conformer \u00e0 NIS2"},"content":{"rendered":"\n<div class=\"wp-block-ch-resource-content alignfull\">\n<p><strong>Auteur : Arnaud DUFOURNET<\/strong>, Directeur Marketing &amp; Exp\u00e9rience Client<\/p>\n\n\n\n<p>Les rapports annuels d\u2019activit\u00e9 de l<a href=\"https:\/\/cyber.gouv.fr\/actualites\/lanssi-publie-son-rapport-dactivite-2024\" target=\"_blank\" rel=\"noreferrer noopener\">\u2019ANSS<\/a>I et de<a href=\"https:\/\/www.cybermalveillance.gouv.fr\/tous-nos-contenus\/actualites\/rapport-activite-2024#tendances-cles-menace-2024\" target=\"_blank\" rel=\"noreferrer noopener\"> Cybermalveillance<\/a> ont tous les deux montr\u00e9 une hausse pr\u00e9occupante des cyberattaques en 2024 (+49,9% des demandes d\u2019assistance constat\u00e9 par cybermalvaillance et +15% des \u00e9v\u00e8nements de s\u00e9curit\u00e9 pour l\u2019ANSSI). Face \u00e0 cette mont\u00e9e en puissance des menaces, il est imp\u00e9ratif pour les entreprises fran\u00e7aises de renforcer leur r\u00e9silience. C\u2019est bien s\u00fbr tout l\u2019enjeu de la <a href=\"https:\/\/www.thegreenbow.com\/fr\/ressource\/blog\/nis-2-des-grands-defis-a-relever-pour-plus-de-protection\/\" target=\"_blank\" rel=\"noreferrer noopener\">directive NIS2<\/a> dont la transposition est toujours en cours. Le projet de loi sur la \u00ab r\u00e9silience des infrastructures critiques et le renforcement de la cybers\u00e9curit\u00e9 \u00bb pr\u00e9sent\u00e9 en Conseil des ministres le 15 octobre 2024 et adopt\u00e9 par le S\u00e9nat le 12 mars dernier, ne devrait pas passer devant l\u2019Assembl\u00e9e Nationale avant septembre. Pour rappel, il transpose trois directives europ\u00e9ennes (REC, NIS 2 et DORA) pour harmoniser et simplifier la conformit\u00e9 des entit\u00e9s concern\u00e9es par ces textes europ\u00e9ens.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Un nouveau r\u00e9f\u00e9rentiel d\u2019exigences techniques et organisationnelles<\/strong><\/h2>\n\n\n\n<p>L\u2019un des enjeux majeurs de l\u2019application de cette loi est l\u2019extension du p\u00e9rim\u00e8tre des organisations concern\u00e9es par la cyber r\u00e9silience. En effet ce sont environ 15 000 organisations en France qui vont devoir se conformer et la grande majorit\u00e9 d\u2019entre elles va d\u00e9couvrir de nouveaux niveaux d\u2019exigence en mati\u00e8re de cybers\u00e9curit\u00e9. <\/p>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\" style=\"grid-template-columns:auto 41%\"><div class=\"wp-block-media-text__content\">\n<p>Pour les guider, l\u2019ANSSI a travaill\u00e9 d\u00e8s fin 2023 sur un r\u00e9f\u00e9rentiel articul\u00e9 autour de 20 objectifs de s\u00e9curit\u00e9 permettant d\u2019atteindre la conformit\u00e9 NIS2. Ces objectifs r\u00e9pondent \u00e0 4 enjeux : la <strong>Protection<\/strong>, la <strong>D\u00e9fense<\/strong>, la<strong> Gouvernance<\/strong> et la <strong>R\u00e9silience<\/strong>.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-1024x579.jpg\" alt=\"\" class=\"wp-image-17920 size-full\" srcset=\"https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-1024x579.jpg 1024w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-300x170.jpg 300w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-768x434.jpg 768w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-1536x868.jpg 1536w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-2048x1158.jpg 2048w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Objectif-NIS2_Lite-100x57.jpg 100w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>Suite \u00e0 la consultation de f\u00e9d\u00e9rations, d\u2019associations professionnelles, d\u2019associations d\u2019\u00e9lus et des repr\u00e9sentants des collectivit\u00e9s territoriales, une seconde version contenant toujours 20 objectifs, est en cours de finalisation. Ces objectifs sont accompagn\u00e9s de mesures concr\u00e8tes \u00e0 mettre en place ainsi que les moyens acceptables de conformit\u00e9 pour les EE (Entit\u00e9s Essentielles) et EI (Entit\u00e9s Importantes). Parmi ces mesures l\u2019usage du VPN \u00e9merge comme une solution incontournable pour r\u00e9pondre \u00e0 3 objectifs fix\u00e9s par l\u2019ANSSI.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><strong>S\u00e9curiser les acc\u00e8s distants<\/strong><\/strong><\/h2>\n\n\n\n<p>Qu\u2019elles soient importantes ou essentielles, les organisations assujetties \u00e0 NIS2 doivent imp\u00e9rativement maitriser les acc\u00e8s \u00e0 leur syst\u00e8me d\u2019information. La grande nouveaut\u00e9 de cette directive europ\u00e9enne est que cette maitrise concerne aussi bien les acc\u00e8s distants accord\u00e9s aux collaborateurs nomades comme les t\u00e9l\u00e9travailleurs, que les prestataires et les fournisseurs informatiques b\u00e9n\u00e9ficiant \u00e9galement d\u2019acc\u00e8s.<\/p>\n\n\n\n<p>L\u2019usage d\u2019un VPN r\u00e9pond de deux mani\u00e8res \u00e0 l\u2019objectif de s\u00e9curisation des acc\u00e8s distants&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Authentification renforc\u00e9e<\/strong>. Pour les entit\u00e9s essentielles, l\u2019acc\u00e8s distant doit \u00eatre prot\u00e9g\u00e9 par une authentification multifacteur. Par exemple, l\u2019ouverture d\u2019un tunnel VPN ne peut intervenir qu\u2019apr\u00e8s la pr\u00e9sentation d\u2019un certificat valide associ\u00e9 \u00e0 une carte \u00e0 puce et la validation d\u2019un code PIN.<\/li>\n\n\n\n<li><strong>Chiffrement des connexions<\/strong>. L\u2019utilisation d\u2019un VPN permet de garantir la confidentialit\u00e9 des \u00e9changes gr\u00e2ce \u00e0 des m\u00e9canismes de chiffrement conformes aux attentes du r\u00e9f\u00e9rentiel de s\u00e9curit\u00e9.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><strong><strong>S\u00e9curiser l\u2019architecture des SI<\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>La directive NIS2 impose le contr\u00f4le des acc\u00e8s et le cloisonnement des ressources, notamment lorsque des tiers (par exemple, des prestataires) sont autoris\u00e9s \u00e0 acc\u00e9der aux syst\u00e8mes d\u2019information. Il est essentiel de limiter ces acc\u00e8s \u00e0 des ressources clairement d\u00e9finies. D\u2019autre part, l\u2019authentification et le tra\u00e7age des acc\u00e8s viennent compl\u00e9ter les mesures \u00e0 prendre.<\/p>\n\n\n\n<p>Quels sont les avantages d\u2019un VPN IPsec comme celui de TheGreenBow&nbsp;?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Micro-segmentation des acc\u00e8s.<\/strong> Le VPN permet de configurer des tunnels sp\u00e9cifiques qui ne donnent acc\u00e8s qu\u2019\u00e0 certaines ressources correspondant au profil de l\u2019utilisateur. Par exemple, les VPN IPsec sont utilis\u00e9s par les Op\u00e9rateurs d\u2019Importance Vitale (OIV) pour s\u00e9curiser l\u2019acc\u00e8s aux SI \u00e0 <a href=\"https:\/\/www.thegreenbow.com\/fr\/ressource\/a-quoi-sert-le-referentiel-ipsec-dr\/\">Diffusion Restreinte<\/a> (SIDR).<\/li>\n\n\n\n<li><strong>Tra\u00e7abilit\u00e9 et contr\u00f4le<\/strong> Chaque connexion VPN est trac\u00e9e et peut \u00eatre supervis\u00e9e via une console d\u00e9di\u00e9e, garantissant ainsi une authentification renforc\u00e9e (surtout si l\u2019authentification \u00e0 plusieurs facteurs est mise en oeuvre) et une gestion fine des acc\u00e8s.<\/li>\n\n\n\n<li><strong>Filtrage des communications.<\/strong> En compl\u00e9ment des pare-feux et passerelles d\u2019entr\u00e9e, le VPN peut \u00eatre configur\u00e9 pour filtrer les URL ou plage IP accessibles, bloquant ainsi toute communication non essentielle.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><strong><strong><strong>Identifier et r\u00e9agir aux incidents de s\u00e9curit\u00e9<\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>En mati\u00e8re de d\u00e9fense, il est crucial d\u2019identifier rapidement les incidents de s\u00e9curit\u00e9 et de mettre en place une proc\u00e9dure claire pour analyser, qualifier et r\u00e9agir aux \u00e9v\u00e9nements suspects.<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:34% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-1024x574.jpg\" alt=\"\" class=\"wp-image-17928 size-full\" srcset=\"https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-1024x574.jpg 1024w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-300x168.jpg 300w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-768x430.jpg 768w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-1536x861.jpg 1536w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-2048x1148.jpg 2048w, https:\/\/www.thegreenbow.com\/wp-content\/uploads\/2025\/06\/Cybersecurity-audit_Lite-100x56.jpg 100w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Le r\u00e9f\u00e9rentiel recommande de s\u2019appuyer sur des signalements issus de diverses sources (employ\u00e9s, prestataires, clients, usagers) et de r\u00e9aliser une analyse des causes afin d\u2019\u00e9viter toute r\u00e9currence.<\/p>\n\n\n\n<p>En quoi un VPN peut-il \u00eatre utile pour atteindre cet objectif ?<\/p>\n<\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Collecte s\u00e9curis\u00e9e des logs.<\/strong> Un client VPN install\u00e9 sur chaque endpoint qui doit acc\u00e9der \u00e0 distance au SI, permet de collecter et transmettre de mani\u00e8re chiffr\u00e9e des informations essentielles \u00e0 l\u2019analyse des incidents de connexion. La centralisation des logs issus des clients VPN compl\u00e8te efficacement les sources d\u2019information d\u2019une plateforme EDR ou XDR.<\/li>\n\n\n\n<li><strong>Supervision continue<\/strong> Les \u00e9v\u00e9nements collect\u00e9s par le VPN, une fois analys\u00e9s, peuvent aider \u00e0 identifier des tentatives d\u2019attaque ou \u00e0 minimiser l\u2019impact d\u2019un incident. Une console de supervision (comme un <a href=\"https:\/\/www.thegreenbow.com\/fr\/produits-vpn-thegreenbow\/connection-management-center\/\">Connection Management Center<\/a>) offre une historisation des \u00e9v\u00e9nements et un audit continu des connexions \u00e0 distance.<\/li>\n<\/ul>\n\n\n\n<p>Alors que les cyberattaques continuent de faire des ravages \u2013 comme en t\u00e9moigne l\u2019attaque co\u00fbteuse subie par <a href=\"https:\/\/www.lesechos.fr\/industrie-services\/conso-distribution\/marks-spencer-la-cyberattaque-tourne-au-scenario-catastrophe-2166491\" target=\"_blank\" rel=\"noreferrer noopener\">Marks &amp; Spencer<\/a> en avril dernier, estim\u00e9e \u00e0 300 millions de livres \u2013 la transposition de la directive NIS2 se concr\u00e9tise. L\u2019utilisation de tunnels VPN, coupl\u00e9e \u00e0 des r\u00e8gles <a href=\"https:\/\/www.thegreenbow.com\/fr\/ressource\/blog\/ztna-et-vpn-pourquoi-les-opposer-alors-quil-faut-les-associer\/\" target=\"_blank\" rel=\"noreferrer noopener\">ZTNA<\/a>, appara\u00eet comme une des solutions incontournables pour r\u00e9pondre aux exigences de s\u00e9curit\u00e9. Pour aider les organisations \u00e0 trouver les solutions adapt\u00e9es \u00e0 ces nouveaux standards, Hexatrust propose une <a href=\"https:\/\/www.hexatrust.com\/actualites\/fic2024-hexatrust-devoile-sa-brochure-capacitaire-nis2\/\" target=\"_blank\" rel=\"noreferrer noopener\">brochure d\u00e9taill\u00e9e<\/a> recensant les solutions fran\u00e7aises de cybers\u00e9curit\u00e9. <a href=\"https:\/\/monespacenis2.cyber.gouv.fr\/me-preparer\" target=\"_blank\" rel=\"noreferrer noopener\">Se pr\u00e9parer <\/a>d\u00e8s maintenant est primordial pour assurer la r\u00e9silience de demain.<\/p>\n\n\n\n<p><\/p>\n<\/div>\n","protected":false},"featured_media":17924,"template":"","meta":{"_acf_changed":false,"resource_type":"internal"},"resource_category":[30],"class_list":["post-17919","resource","type-resource","status-publish","has-post-thumbnail","hentry","resource_category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>3 bonnes raisons d\u2019utiliser un VPN pour se conformer \u00e0 NIS2 - 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