{"id":7233,"date":"2022-04-02T05:00:22","date_gmt":"2022-04-02T04:00:22","guid":{"rendered":"https:\/\/humm.loverde.fr\/?p=7233"},"modified":"2023-04-11T13:56:59","modified_gmt":"2023-04-11T12:56:59","slug":"le-dns-menteur","status":"publish","type":"post","link":"https:\/\/humm.loverde.fr\/?p=7233","title":{"rendered":"Le DNS menteur"},"content":{"rendered":"

Quand j’ai vu cette expression la premi\u00e8re fois, \u00e7a m’a fait sourire. Je ne vous dirai pas o\u00f9, en message priv\u00e9 si vous me le demandez.
\nPuis j’ai prospect\u00e9 et enfin compris. Voici le r\u00e9sultat de mes p\u00e9r\u00e9grinations. Pour geek ou n\u00e9ophyte, pour tous donc.<\/p>\n

<\/p>\n

Qu’est-ce qu’un serveur DNS ?<\/strong>
\nLes serveurs DNS (Domain Name Server) sont des serveurs qui convertissent les noms que l\u2019on tape dans un navigateur en adresse IP. Par exemple, si vous tapez 216.58.209.227 dans le navigateur vous tombez sur Google.com, op\u00e9ration r\u00e9alis\u00e9e dans le sens inverse, habituellement.<\/p>\n

Pourquoi vouloir changer de DNS ?<\/strong>
\nIl peut arriver qu’un probl\u00e8me chez votre fournisseur d’acc\u00e8s Internet (FAI) vous emp\u00eache d\u2019acc\u00e9der \u00e0 certains sites web.
\nIl est aussi possible que votre FAI bride votre connexion s’ils s’aper\u00e7oit que vous t\u00e9l\u00e9chargez beaucoup.
\nEt enfin, depuis 2018, la France a mis en place une liste noire de sites \u00e0 bloquer. Les FAI fran\u00e7ais sont tenus de bloquer l\u2019acc\u00e8s \u00e0 tous les sites pr\u00e9sents sur cette liste. Si vous voulez aller sur un site de cette liste noire, le serveur DNS de votre FAI va appliquer la technique du \u00a0\u00bb DNS menteur \u00a0\u00bb et vous indiquer que la connexion a \u00e9chou\u00e9e sans vous donner la raison.<\/p>\n

Contournement des blocages DNS<\/strong>
\nLe changement de serveur DNS permettra d’acc\u00e9der \u00e0 des sites Web que votre FAI a bloqu\u00e9. Ce n’est pas utile si on passe par un vpn.
\nAttention toutefois, le changement de DNS ne permet que<\/em> la visite des sites bloqu\u00e9s, il ne change pas votre IP et vous n’\u00eates pas \u00e0 l’abri de Hadopi, en cas de t\u00e9l\u00e9chargement ill\u00e9gal.
\nPour cela il faut passer par un vpn :
\nhttps:\/\/humm.loverde.fr\/vpn-virtual-private-network-reseau-prive-virtuel\/<\/a><\/p>\n

R\u00e9alisation sous windows<\/strong>
\n1. Touches \u00ab\u00a0Fen\u00eatre + R\u00a0\u00bb
\n2. ncpa.cpl
\n3. S\u00e9lectionner la connexion active, Ethernet ou wifi
\n4. Protocole IPV4, propri\u00e9t\u00e9s
\n5. Cocher \u00ab\u00a0Utiliser l’adresse de serveur DNS suivante\u00a0\u00bb
\n6. Lancer DNS Benchmark
\n7. onglet Nameserver, please wait a few moment while the list of DNS resolvers is loaded…
\n8. Bouton Run Benchmark (Sort Fastest First est coch\u00e9)
\n9. Choisir les deux premiers ou, sans passer par DNS Benchmark, 2 dans la liste plus bas.
\n10. Faire la m\u00eame chose pour IPv6. DNS Benchmark ne pr\u00e9voit pas le IPv6.<\/p>\n

Serveurs DNS gratuits<\/strong> les plus rapides en 2022<\/strong>
\nCette liste permet de changer de DNS directement sans passer par le test DNS Benchmark qui, de toute fa\u00e7on, ne test que l’ipv4.<\/p>\n

Nom,
\nIPv4 prim., sec.,
\nIPv6 prim , sec<\/p>\n

Cloudflare<\/em><\/strong>,
\nIPv4 : 1.1.1.1, 1.0.0.1,
\nIPv6 : 2606:4700:4700::1111, 2606:4700:4700::1001<\/p>\n

Cisco OpenDNS<\/em><\/strong>
\nIPv4 : 208.67.222.222, 208.67.220.220
\nIPv6 : 2620:119:35::35, 2620:119:53:53<\/p>\n

Neustar UltraDNS Public<\/em><\/strong>
\nIPv4 : 64.6.64.6, 64.6.65.6
\nIPv6 : 2620:74:1b::1:1, 2620:74:10::2:2<\/p>\n

NextDNS<\/em><\/strong>
\nIPv4 : 45.90.28.0, 45.90.30.0
\nIPv6 : 2a07:a8c0::, 2a07:a8c1::<\/p>\n

Google Public DNS<\/em><\/strong>
\nIPv4 : 8.8.8.8, 8.8.4.4
\nIPv6 : 2001:4860:4860::8888, 2001:4860:4860::8844<\/p>\n

Source<\/strong>
\nhttps:\/\/lecrabeinfo.net\/les-meilleurs-serveurs-dns-rapides-et-gratuits.html<\/a><\/p>\n

Tester<\/strong>
\nhttps:\/\/ipv6-test.com\/speedtest\/<\/a><\/p>\n

Christian
\nbit.ly\/Christian_Loverde<\/a><\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Quand j’ai vu cette expression la premi\u00e8re fois, \u00e7a m’a fait sourire. Je ne vous dirai pas o\u00f9, en message … <\/p>\n","protected":false},"author":1,"featured_media":7234,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[544,1422],"tags":[1378,1379,1380,796],"class_list":["post-7233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informatique","category-insolite","tag-dns","tag-ipv4","tag-ipv6","tag-serveur"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/humm.loverde.fr\/wp-content\/uploads\/2022\/03\/IMG_20220322_234214_958.jpg?fit=596%2C472&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9whbF-1SF","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":8639,"url":"https:\/\/humm.loverde.fr\/?p=8639","url_meta":{"origin":7233,"position":0},"title":"DNS, VPN et fuites DNS","author":"cloverde","date":"27 juillet 2023","format":false,"excerpt":"L\u2019informatique de l\u2019\u00e9t\u00e9, sans votre ordinateur, une s\u00e9rie d\u2019articles sortis de derri\u00e8re les fagots et remis au go\u00fbt du jour. Votre FAI (Fournisseur d'acc\u00e8s \u00e0 Internet), voit quelles applications vous utilisez, les sites Web que vous fr\u00e9quentez et les services que vous utilisez par son serveur DNS. 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