{"id":632,"date":"2021-01-05T11:00:00","date_gmt":"2021-01-05T10:00:00","guid":{"rendered":"https:\/\/mikadmin.fr\/blog\/?p=632"},"modified":"2021-09-19T01:12:35","modified_gmt":"2021-09-18T23:12:35","slug":"activer-lip-forwarding-sous-linux","status":"publish","type":"post","link":"https:\/\/mikadmin.fr\/blog\/activer-lip-forwarding-sous-linux\/","title":{"rendered":"Activer l&rsquo;ip forwarding sous Linux"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\"><\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">min read<\/span><\/span><p>Views: 672<\/p>\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">L&rsquo;<strong><span style=\"color:#cf2e2e\" class=\"tadv-color\">IP forwarding<\/span><\/strong> est la fonction de <strong><span style=\"color:#fcb900\" class=\"tadv-color\">routage sous <a href=\"https:\/\/mikadmin.fr\/blog\/tester-son-debit-sous-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Linux<\/a><\/span><\/strong> qui permet d&rsquo;autoriser la <strong>transition des paquets<\/strong> entre les diff\u00e9rentes interfaces.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"680\" height=\"205\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/imageonline-co-add-text.png\" alt=\"ip forwarding\" class=\"wp-image-669\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/imageonline-co-add-text.png 680w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/imageonline-co-add-text-300x90.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/imageonline-co-add-text-150x45.png 150w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:17px\"><em><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Routage_IP\" target=\"_blank\" rel=\"noreferrer noopener\">Plus d&rsquo;infos sur le routage<\/a><\/em><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\" style=\"font-size:35px\">Activation<\/h2>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:25px\"><strong>Activation non permanente :<\/strong><\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sysctl -w net.ipv4.ip_forward=1<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"299\" height=\"96\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image.png\" alt=\"\" class=\"wp-image-639\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image.png 299w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-150x48.png 150w\" sizes=\"auto, (max-width: 299px) 100vw, 299px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:25px\"><strong>Activation permanente :<\/strong><\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sed -i &#039;s\/#net.ipv4.ip_forward=1\/net.ipv4.ip_forward=1\/&#039; \/etc\/sysctl.conf<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"654\" height=\"95\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-1.png\" alt=\"\" class=\"wp-image-640\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-1.png 654w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-1-300x44.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-1-150x22.png 150w\" sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">Une <strong>autre m\u00e9thode<\/strong> consiste simplement \u00e0 <strong>modifier la ligne<\/strong> suivante pr\u00e9sente dans <strong>\/etc\/sysctl.conf<\/strong> :<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"508\" height=\"56\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-2.png\" alt=\"\" class=\"wp-image-641\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-2.png 508w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-2-300x33.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-2-150x17.png 150w\" sizes=\"auto, (max-width: 508px) 100vw, 508px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">Pour finir, nous utilisons la commande suivante afin de <strong>valider les changements<\/strong> :<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sysctl -p \/etc\/sysctl.conf<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"97\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-3.png\" alt=\"\" class=\"wp-image-644\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-3.png 256w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-3-150x57.png 150w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\" style=\"font-size:35px\">V\u00e9rification<\/h2>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">Nous allons \u00e0 pr\u00e9sent <strong>v\u00e9rifier l&rsquo;activation<\/strong> de cette fonction !<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sysctl net.ipv4.ip_forward<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"95\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-4.png\" alt=\"\" class=\"wp-image-647\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-4.png 256w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-4-150x56.png 150w\" sizes=\"auto, (max-width: 256px) 100vw, 256px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">Nous pouvons aussi v\u00e9rifier ceci de cette mani\u00e8re :<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">cat \/proc\/sys\/net\/ipv4\/ip_forward<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"315\" height=\"94\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-5.png\" alt=\"\" class=\"wp-image-648\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-5.png 315w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-5-300x90.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2021\/01\/image-5-150x45.png 150w\" sizes=\"auto, (max-width: 315px) 100vw, 315px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\"><\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">min read<\/span><\/span>L&rsquo;IP forwarding est la fonction de routage sous Linux qui permet d&rsquo;autoriser la transition des paquets entre les diff\u00e9rentes interfaces. <a href=\"https:\/\/mikadmin.fr\/blog\/activer-lip-forwarding-sous-linux\/\" class=\"more-link\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":672,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[2],"tags":[39,40,9,31,38],"class_list":["post-632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network","tag-forwarding","tag-ip","tag-linux","tag-network","tag-routage"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"L&#039;IP forwarding est la fonction de routage sous Linux qui permet d&#039;autoriser la transition des paquets entre les diff\u00e9rentes interfaces.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Mika\"\/>\n\t<meta name=\"keywords\" 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