{"id":55542,"date":"2025-05-18T17:26:11","date_gmt":"2025-05-18T15:26:11","guid":{"rendered":"https:\/\/iode.tech\/?post_type=docs&#038;p=55542"},"modified":"2025-07-04T14:56:15","modified_gmt":"2025-07-04T12:56:15","password":"","slug":"resolveur-dns","status":"publish","type":"docs","link":"https:\/\/iode.tech\/fr\/documentation\/resolveur-dns\/","title":{"rendered":"R\u00e9solveur DNS"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Fonctionnement du DNS sur Android<\/h3>\n\n\n\n<p>Par d\u00e9faut, Android utilise les serveurs DNS fournis par le r\u00e9seau via DHCP :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>En Wi-Fi<\/strong> : les serveurs DNS de votre routeur ou fournisseur d\u2019acc\u00e8s (FAI).<\/li>\n\n\n\n<li><strong>En donn\u00e9es mobiles<\/strong> : les serveurs DNS de votre op\u00e9rateur.<\/li>\n<\/ul>\n\n\n\n<p>Android envoie ses requ\u00eates DNS \u00e0 ces serveurs pour <strong>traduire les noms de domaine<\/strong> (par exemple <code>example.com<\/code>) en adresses IP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9canisme de repli DNS (fallback) sur Android<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Si le <strong>serveur DNS principal<\/strong> ne r\u00e9pond pas ou \u00e9choue \u00e0 r\u00e9soudre un domaine, Android essaie les <strong>serveurs DNS secondaires<\/strong> fournis par le r\u00e9seau.<\/li>\n\n\n\n<li>En dernier recours (non officiellement document\u00e9), Android pourrait tenter d\u2019utiliser d\u2019autres DNS connus, comme <strong>Google DNS (8.8.8.8)<\/strong>, selon le fabricant ou le mod\u00e8le.<\/li>\n\n\n\n<li><strong>Note<\/strong> : AOSP (Android Open Source Project) ne contient <strong>aucun DNS de secours cod\u00e9 en dur<\/strong> ; le fallback d\u00e9pend exclusivement des serveurs DNS fournis par le r\u00e9seau.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">DNS priv\u00e9 (DNS over TLS)<\/h3>\n\n\n\n<p>Depuis <strong>Android 9<\/strong>, il est possible d\u2019activer le <strong>DNS priv\u00e9<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Android envoie alors ses requ\u00eates DNS \u00e0 un <strong>fournisseur sp\u00e9cifi\u00e9<\/strong> via une connexion chiffr\u00e9e (ex. : <code>dns.google<\/code>).<\/li>\n\n\n\n<li>Si ce serveur DNS priv\u00e9 est inaccessible, Android <strong>revient automatiquement<\/strong> aux serveurs DNS non chiffr\u00e9s fournis par le r\u00e9seau.<\/li>\n\n\n\n<li>Cela garantit la r\u00e9solution des noms m\u00eame en cas d\u2019\u00e9chec du DNS priv\u00e9, mais avec une perte de confidentialit\u00e9 temporaire.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">DNS dans iod\u00e9OS<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Fallback DNS dans iod\u00e9OS<\/h3>\n\n\n\n<p>Si le <strong>serveur DNS principal d\u2019iod\u00e9<\/strong> est injoignable ou \u00e9choue, <strong>iod\u00e9OS bascule automatiquement vers Quad9 Unblocked DNS<\/strong> (<code>9.9.9.10<\/code>).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pourquoi Quad9 Unblocked DNS ?<\/h3>\n\n\n\n<p>Quad9 Unblocked DNS est un service DNS reconnu pour sa combinaison de <strong>s\u00e9curit\u00e9, de confidentialit\u00e9 et de neutralit\u00e9<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u00e9curit\u00e9<\/strong> : bloque l\u2019acc\u00e8s aux domaines malveillants connus (malware, phishing, etc.).<\/li>\n\n\n\n<li><strong>Aucune censure<\/strong> : ne bloque <strong>aucun site l\u00e9gitime<\/strong>, assurant un acc\u00e8s libre \u00e0 Internet.<\/li>\n\n\n\n<li><strong>Vie priv\u00e9e respect\u00e9e<\/strong> : ne conserve <strong>aucune adresse IP<\/strong> ni historique de requ\u00eates DNS.<\/li>\n\n\n\n<li><strong>Chiffrement pris en charge<\/strong> : compatible <strong>DNS over TLS<\/strong> (DoT) et <strong>DNS over HTTPS<\/strong> (DoH), assurant la confidentialit\u00e9 des requ\u00eates.<\/li>\n\n\n\n<li><strong>Performance<\/strong> : s\u2019appuie sur une infrastructure mondiale pour offrir une r\u00e9solution rapide et fiable.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">En r\u00e9sum\u00e9<\/h3>\n\n\n\n<p>iod\u00e9OS assure un <strong>\u00e9quilibre entre confidentialit\u00e9, s\u00e9curit\u00e9 et libert\u00e9<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Priorit\u00e9 \u00e0 un DNS respectueux de la vie priv\u00e9e.<\/li>\n\n\n\n<li>M\u00e9canisme de secours vers Quad9 Unblocked en cas de d\u00e9faillance.<\/li>\n\n\n\n<li>Acc\u00e8s chiffr\u00e9 et non censur\u00e9 \u00e0 l\u2019Internet.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Fonctionnement du DNS sur Android Par d\u00e9faut, Android utilise les serveurs DNS fournis par le r\u00e9seau via DHCP : Android envoie ses requ\u00eates DNS \u00e0 ces serveurs pour traduire les noms de domaine (par exemple example.com) en adresses IP. M\u00e9canisme de repli DNS (fallback) sur Android DNS priv\u00e9 (DNS over TLS) Depuis Android 9, il &#8230; <a title=\"R\u00e9solveur DNS\" class=\"read-more\" href=\"https:\/\/iode.tech\/fr\/documentation\/resolveur-dns\/\" aria-label=\"En savoir plus sur R\u00e9solveur DNS\">Lire plus<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[105],"doc_tag":[],"class_list":["post-55542","docs","type-docs","status-publish","hentry","doc_category-systeme-et-technologies"],"year_month":"2026-04","word_count":403,"total_views":0,"reactions":{"happy":0,"normal":0,"sad":0},"author_info":{"name":"antoine","author_nicename":"antoine","author_url":"https:\/\/iode.tech\/fr\/author\/antoine\/"},"doc_category_info":[{"term_name":"Syst\u00e8me et technologies","term_url":"https:\/\/iode.tech\/fr\/documentation-category\/systeme-et-technologies\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R\u00e9solveur DNS - iod\u00e9<\/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:\/\/iode.tech\/fr\/documentation\/resolveur-dns\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9solveur DNS - iod\u00e9\" \/>\n<meta property=\"og:description\" content=\"Fonctionnement du DNS sur Android Par d\u00e9faut, Android utilise les serveurs DNS fournis par le r\u00e9seau via DHCP : Android envoie ses requ\u00eates DNS \u00e0 ces serveurs pour traduire les noms de domaine (par exemple example.com) en adresses IP. 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