{"id":72445,"date":"2023-09-25T13:02:25","date_gmt":"2023-09-25T12:02:25","guid":{"rendered":"https:\/\/www.wallix.com\/identify-authenticate-authorize-the-three-key-steps-in-access-security-2\/"},"modified":"2025-12-19T10:13:10","modified_gmt":"2025-12-19T09:13:10","slug":"identifier-authentifier-autoriser-trois-etapes-de-la-securite-acces","status":"publish","type":"post","link":"https:\/\/www.wallix.com\/fr\/blogpost\/identifier-authentifier-autoriser-trois-etapes-de-la-securite-acces\/","title":{"rendered":"Identifier, Authentifier, Autoriser : Les Trois \u00c9tapes Cl\u00e9s de la S\u00e9curit\u00e9 d&rsquo;Acc\u00e8s"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_two_third  avia-builder-el-first   container_wrap fullsize'  ><div  class='avia-slideshow av-lluli694-c83dabbd142e1fad7a694109318eef5b avia-slideshow-entry_without_sidebar av_slideshow_full avia-slide-slider av-slideshow-ui av-control-default av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied   avia-slideshow-1' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 34.95867768595%;'><li  class='avia-slideshow-slide av-lluli694-c83dabbd142e1fad7a694109318eef5b__0  av-single-slide slide-1 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-51648 avia-img-lazy-loading-not-51648\"  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.flex_column_table.av-equal-height-column-flextable.av-h0ryt2-48f1faf57ef305fcd0649fbbbe21b840{\nmargin-top:-300px;\nmargin-bottom:0px;\n}\n.flex_column.av-h0ryt2-48f1faf57ef305fcd0649fbbbe21b840{\npadding:50px 50px 50px 50px;\nbackground-color:#ffffff;\n}\n\n@media only screen and (max-width: 479px){ \n#top .flex_column_table.av-equal-height-column-flextable.av-h0ryt2-48f1faf57ef305fcd0649fbbbe21b840{\nmargin-top:-200px;\n}\n}\n<\/style>\n<div  class='flex_column av-h0ryt2-48f1faf57ef305fcd0649fbbbe21b840 av_two_third  avia-builder-el-1  el_after_av_slideshow_full  el_before_av_one_third  avia-builder-el-first  first no_margin flex_column_table_cell av-equal-height-column av-align-top  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-lq0spy2w-97830db0dc5c7cc38378f6018855f3e1\">\n#top .av-special-heading.av-lq0spy2w-97830db0dc5c7cc38378f6018855f3e1{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-lq0spy2w-97830db0dc5c7cc38378f6018855f3e1 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-lq0spy2w-97830db0dc5c7cc38378f6018855f3e1 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-lq0spy2w-97830db0dc5c7cc38378f6018855f3e1 av-special-heading-h1 blockquote modern-quote  avia-builder-el-2  el_before_av_post_metadata  avia-builder-el-first '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Identifier, Authentifier, Autoriser : Les Trois \u00c9tapes Cl\u00e9s de la S\u00e9curit\u00e9 d\u2019Acc\u00e8s<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  class='av-post-metadata-container av-av_post_metadata-36bcf33e90f22125c019c70beb35c7b9 av-metadata-container-align-left  avia-builder-el-3  el_after_av_heading  el_before_av_hr  av-metadata-container-1'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-author\"  itemprop=\"author\" ><span class=\"av-metadata-before av-metadata-before-author\">by<\/span><span class=\"av-post-metadata-author-link\" ><a href=\"https:\/\/www.wallix.com\/fr\/author\/alex\/\"  rel=\"author\">WALLIX<\/a><\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">\/<\/span><span class=\"av-post-metadata-content av-post-metadata-modified\"><span class=\"av-post-metadata-modified-date\" >19 D\u00e9cembre 2025<\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">\/<\/span><span class=\"av-post-metadata-content av-post-metadata-category\"><span class=\"av-metadata-before av-metadata-before-categories\">in<\/span><span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/www.wallix.com\/fr\/category\/blogpost\/\" >BLOGPOST<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/www.wallix.com\/fr\/category\/blogpost\/blog-endpoint-privilege-management-fr\/\" >ENDPOINT PRIVILEGE MANAGEMENT<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/www.wallix.com\/fr\/category\/blogpost\/gestion-des-acces-a-privileges-fr\/\" >GESTION DES ACC\u00c8S \u00c0 PRIVIL\u00c8GES<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/www.wallix.com\/fr\/category\/blogpost\/zero-trust-blogpost-fr\/\" >ZERO TRUST<\/a><\/span><\/span><\/span><\/div><\/div><br \/>\n<div  class='hr av-av_hr-bca31578670ae9d408d6d6d291fc57a6 hr-default  avia-builder-el-4  el_after_av_post_metadata  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-llulio83-9be11f81e103238bfe3ece2cf03fffa4\">\n#top .av_textblock_section.av-llulio83-9be11f81e103238bfe3ece2cf03fffa4 .avia_textblock{\nfont-size:15px;\n}\n<\/style>\n<section  class='av_textblock_section av-llulio83-9be11f81e103238bfe3ece2cf03fffa4 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Un nouvel arrivant dans l\u2019entreprise peut-il acc\u00e9der \u00e0 vos donn\u00e9es sensibles sans \u00eatre contr\u00f4l\u00e9 ? Certainement pas. D\u00e8s l\u2019entr\u00e9e dans les locaux, un processus rigoureux s\u2019applique : identification \u00e0 l\u2019accueil, v\u00e9rification par badge ou pi\u00e8ce d\u2019identit\u00e9, autorisation d\u2019acc\u00e8s.<\/p>\n<p>Ce trio \u2013 identifier, authentifier, autoriser \u2013 est si ancr\u00e9 dans nos pratiques physiques qu\u2019on en oublie parfois de le transposer \u00e0 l\u2019univers num\u00e9rique. Et pourtant, dans les syst\u00e8mes d\u2019information, il est tout aussi indispensable pour garantir que seules les bonnes personnes acc\u00e8dent aux bonnes ressources.<\/p>\n<p>Pour une s\u00e9curit\u00e9 d\u2019acc\u00e8s r\u00e9ellement efficace, ces trois \u00e9tapes doivent fonctionner de mani\u00e8re fluide et coordonn\u00e9e, prot\u00e9geant ainsi les infrastructures critiques de l\u2019entreprise contre toute tentative d\u2019intrusion.<\/p>\n<h2><strong>Identification : <\/strong><strong>le premier rempart<\/strong><\/h2>\n<p>L\u2019identit\u00e9 est le point de d\u00e9part de toute strat\u00e9gie de s\u00e9curit\u00e9 des acc\u00e8s. Dans un environnement num\u00e9rique, le nouvel arrivant de notre exemple devient un utilisateur tentant d&rsquo;acc\u00e9der au syst\u00e8me d&rsquo;information de l\u2019entreprise. Comme le ferait un agent de s\u00e9curit\u00e9 \u00e0 l\u2019entr\u00e9e des locaux, le syst\u00e8me doit exiger une preuve que cet utilisateur est bien celui qu\u2019il pr\u00e9tend \u00eatre.<\/p>\n<p>Avec la quantit\u00e9 de donn\u00e9es sensibles stock\u00e9es dans les infrastructures IT et OT, il est imp\u00e9ratif de distinguer les utilisateurs num\u00e9riques avec la m\u00eame rigueur que les identit\u00e9s physiques.<\/p>\n<p>C\u2019est tout l\u2019enjeu de l\u2019<strong>Identity Lifecycle Management<\/strong> : garantir que chaque utilisateur est identifi\u00e9 de mani\u00e8re fiable et conforme d\u00e8s sa premi\u00e8re connexion. Chaque identit\u00e9 est associ\u00e9e \u00e0 des identifiants uniques \u2013 le plus souvent un nom d&rsquo;utilisateur et un mot de passe \u2013 qui permettent de l\u2019enregistrer et de la suivre dans le temps.<\/p>\n<p>Mais des identifiants seuls ne suffisent pas. Ils peuvent \u00eatre partag\u00e9s, vol\u00e9s ou compromis. Une <strong>identification pr\u00e9cise<\/strong>, syst\u00e9matique et int\u00e9gr\u00e9e \u00e0 une gestion des identit\u00e9s robuste est essentielle pour poser les bases d\u2019une politique de s\u00e9curit\u00e9 efficace. Et c\u2019est pr\u00e9cis\u00e9ment ce qui ouvre la voie \u00e0 l\u2019\u00e9tape suivante\u00a0: l\u2019authentification.<\/p>\n<h2><strong>Authentification<\/strong><\/h2>\n<p>L&rsquo;authentification est l&rsquo;\u00e9tape du processus de s\u00e9curit\u00e9 o\u00f9 un utilisateur doit prouver l&rsquo;identit\u00e9 qu&rsquo;il revendique. Dans notre exemple physique, ce serait le moment o\u00f9 le nouvel arrivant pr\u00e9senterait sa pi\u00e8ce d&rsquo;identit\u00e9 avec photo pour authentifier l&rsquo;identit\u00e9 qu&rsquo;elle a donn\u00e9e. S&rsquo;authentifier avant d&rsquo;autoriser l&rsquo;acc\u00e8s aux ressources suit le mod\u00e8le Zero Trust de la cybers\u00e9curit\u00e9. Zero Trust signifie que l&rsquo;identit\u00e9 et les privil\u00e8ges ne sont jamais pr\u00e9sum\u00e9s \u2013 ils doivent toujours \u00eatre v\u00e9rifi\u00e9s par des protocoles de s\u00e9curit\u00e9 stricts.<\/p>\n<p>Il existe trois types de facteurs d&rsquo;authentification qui peuvent \u00eatre utilis\u00e9s pour v\u00e9rifier une identit\u00e9 virtuelle :<\/p>\n<ul>\n<li><strong>Quelque chose que vous connaissez<\/strong> : L&rsquo;exemple le plus courant de ce type d&rsquo;information serait un mot de passe. Un mot de passe est la forme la plus \u00e9l\u00e9mentaire de s\u00e9curit\u00e9 d&rsquo;acc\u00e8s et celle qui est expos\u00e9e \u00e0 des risques tels que le partage de mot de passe ou le piratage visuel.<\/li>\n<li><strong>Quelque chose que vous poss\u00e9dez<\/strong> : Il peut s&rsquo;agir d&rsquo;un objet physique unique comme un smartphone, une carte d&rsquo;acc\u00e8s ou un jeton\/token RSA qui re\u00e7oit ou g\u00e9n\u00e8re un code temporaire.<\/li>\n<li><strong>Quelque chose que vous \u00eates<\/strong> : Les facteurs d&rsquo;authentification biom\u00e9triques peuvent \u00eatre utilis\u00e9s pour confirmer l&rsquo;identit\u00e9 de l&rsquo;utilisateur via un identifiant physique inh\u00e9rent tel qu&rsquo;un iris ou une empreinte digitale. La biom\u00e9trie comportementale peut \u00e9galement \u00eatre utilis\u00e9e \u2013 par exemple, la reconnaissance de frappe, de voix ou de signature.<\/li>\n<\/ul>\n<p>Il est plus difficile pour un pirate informatique de voler deux informations confidentielles qu&rsquo;une seule. L&rsquo;ajout de facteurs suppl\u00e9mentaires en plus de la combinaison de base nom d&rsquo;utilisateur\/mot de passe, connu sous le nom de Multi-Factor Authentication (MFA), peut offrir \u00e0 une organisation un haut niveau de certitude que la personne tentant d&rsquo;acc\u00e9der est vraiment celle qu&rsquo;elle pr\u00e9tend \u00eatre. Et cette certitude est essentielle lors de l&rsquo;acc\u00e8s \u00e0 des donn\u00e9es sensibles.<\/p>\n<p>Les solutions d&rsquo;Identity and Access Management comme WALLIX Trustelem offrent aux organisations un moyen d&rsquo;authentifier et de g\u00e9rer intelligemment les identit\u00e9s. L&rsquo;identit\u00e9 des utilisateurs peut \u00eatre garantie gr\u00e2ce \u00e0 la <a href=\"https:\/\/www.wallix.com\/fr\/blogpost\/comment-mfa-et-pam-fonctionnent-ensemble\/\">MFA (Multi Factor Authentication)<\/a> , puis contr\u00f4l\u00e9e \u00e0 partir d&rsquo;un tableau de bord centralis\u00e9 dans un processus simple pour les administrateurs.<\/p>\n<p>Une fois que les utilisateurs d&rsquo;un r\u00e9seau peuvent \u00eatre identifi\u00e9s et authentifi\u00e9s de mani\u00e8re s\u00e9curis\u00e9e, il est tout aussi important qu&rsquo;ils disposent des autorisations appropri\u00e9es.<\/p>\n<h2><strong>Autorisation<\/strong><\/h2>\n<p>Puis-je entrer ici ? L&rsquo;autorisation r\u00e9pond \u00e0 cette derni\u00e8re question dans le processus de s\u00e9curit\u00e9 d&rsquo;acc\u00e8s. Le garde de s\u00e9curit\u00e9 a peut-\u00eatre confirm\u00e9 l&rsquo;identit\u00e9 de l&rsquo;ing\u00e9nieure, mais il ne l&rsquo;autoriserait \u00e0 entrer que dans l&rsquo;entreprise de cybers\u00e9curit\u00e9 \u2013 pas dans le bureau d&rsquo;\u00e0 c\u00f4t\u00e9. M\u00eame si l&rsquo;identit\u00e9 num\u00e9rique d&rsquo;un utilisateur peut \u00eatre authentifi\u00e9e par MFA, le principe de Least privilege principle signifie qu&rsquo;on ne devrait jamais lui accorder un acc\u00e8s illimit\u00e9 au sein d&rsquo;un r\u00e9seau informatique. Une autorisation faible peut conduire \u00e0 des utilisateurs trop privil\u00e9gi\u00e9s et au risque d&rsquo;abus accidentel ou d\u00e9lib\u00e9r\u00e9 des privil\u00e8ges racine. Cela peut \u00e0 son tour exposer une entreprise au risque de fraude, de vol de donn\u00e9es et de dommages \u00e0 sa r\u00e9putation.<\/p>\n<p>Les organisations qui emploient une solution robuste de Privileged Access Management (PAM) s&rsquo;assurent que seuls les utilisateurs autoris\u00e9s peuvent acc\u00e9der aux ressources sensibles au bon moment. Les administrateurs informatiques peuvent g\u00e9rer de mani\u00e8re centralis\u00e9e les utilisateurs et les syst\u00e8mes cibles, puis d\u00e9finir des r\u00e8gles et des conditions d&rsquo;autorisation pour accorder ou refuser automatiquement l&rsquo;acc\u00e8s aux ressources critiques. Ils peuvent \u00e9galement surveiller et enregistrer les actions des utilisateurs privil\u00e9gi\u00e9s au cours d&rsquo;une session \u00e0 des fins d&rsquo;audit ou pour mettre fin \u00e0 toute activit\u00e9 suspecte en temps r\u00e9el.<\/p>\n<p>Une solution PAM comme WALLIX Bastion offre un moyen s\u00e9curis\u00e9 et rationalis\u00e9 d&rsquo;autoriser et de surveiller tous les utilisateurs privil\u00e9gi\u00e9s au sein du r\u00e9seau informatique d&rsquo;une entreprise. En plus de g\u00e9rer les niveaux d&rsquo;acc\u00e8s privil\u00e9gi\u00e9s des utilisateurs, elle permet \u00e0 une organisation de :<\/p>\n<ul>\n<li>\u00c9liminer la n\u00e9cessit\u00e9 pour les utilisateurs privil\u00e9gi\u00e9s d&rsquo;avoir ou d&rsquo;exiger des mots de passe syst\u00e8mes locaux<\/li>\n<li>Cr\u00e9er une piste d&rsquo;audit inalt\u00e9rable pour toute op\u00e9ration privil\u00e9gi\u00e9e<\/li>\n<li>Se conformer aux r\u00e9glementations de contr\u00f4le d&rsquo;acc\u00e8s, de surveillance et d&rsquo;audit telles que GDPR, NIS, ISO 27001, HIPAA et PCI DSS<\/li>\n<li>Int\u00e9grer une solution d<a href=\"https:\/\/www.wallix.com\/fr\/blogpost\/lendpoint-privilege-management-epm-une-nouvelle-generation-de-007\/\">&lsquo;Endpoint Privilege Management (EPM)<\/a> telle que WALLIX PEDM pour appliquer le principe du moindre privil\u00e8ge sur les terminaux de l&rsquo;organisation<\/li>\n<\/ul>\n<p>L&rsquo;identification, l&rsquo;authentification et l&rsquo;autorisation sont tous des aspects cl\u00e9s d&rsquo;un cadre solide de s\u00e9curit\u00e9 d&rsquo;acc\u00e8s. Ils sont employ\u00e9s ensemble pour s\u00e9curiser l&rsquo;acc\u00e8s au r\u00e9seau d&rsquo;une entreprise et prot\u00e9ger les informations sensibles avec une approche globale et compl\u00e8te de la s\u00e9curit\u00e9 d&rsquo;acc\u00e8s.<\/p>\n<p>D\u00e9couvrez une vue d&rsquo;ensemble plus approfondie des solutions de s\u00e9curit\u00e9 d&rsquo;acc\u00e8s et des concepts cl\u00e9s qui les sous-tendent en t\u00e9l\u00e9chargeant notre livre blanc<\/p>\n<p><a href=\"https:\/\/www.wallix.com\/fr\/ressources\/whitepaper-fr\/le-guide-pratique-de-la-securisation-des-acces\/\"> \u00ab\u00a0Guide du d\u00e9butant sur la s\u00e9curit\u00e9 d&rsquo;acc\u00e8s\u00a0\u00bb.<\/a><\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-mamnu8eo-9a39672fede31af4b8a48f664bb2a7e0-wrap avia-button-center  avia-builder-el-6  el_after_av_textblock  avia-builder-el-last '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" 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