{"id":480,"date":"2020-12-01T11:20:38","date_gmt":"2020-12-01T10:20:38","guid":{"rendered":"https:\/\/mikadmin.fr\/blog\/?p=480"},"modified":"2022-03-01T18:39:12","modified_gmt":"2022-03-01T17:39:12","slug":"how-to-change-the-default-ssh-port","status":"publish","type":"post","link":"https:\/\/mikadmin.fr\/blog\/how-to-change-the-default-ssh-port\/","title":{"rendered":"How to change the default SSH port ?"},"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: 180<\/p>\n<p class=\"has-text-align-center\" style=\"font-size:23px\"><em><strong>Pourquoi changer ce dernier ?<\/strong><\/em><\/p>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size\">Afin d&rsquo;<strong><span style=\"color:#0693e3\" class=\"tadv-color\">am\u00e9liorer la s\u00e9curit\u00e9<\/span><\/strong> et de<span style=\"color:#ff6900\" class=\"tadv-color\"> <strong>r\u00e9duire les attaques par bruteforce.<\/strong><\/span><\/p>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/www.howtogeek.com\/443156\/the-best-ways-to-secure-your-ssh-server\/\" target=\"_blank\" rel=\"noreferrer noopener\">The Best Ways to Secure Your SSH Server<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\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\">Dans un premier temps, nous v\u00e9rifions que le <strong>port par d\u00e9faut<\/strong> est bien le <strong><span style=\"color:#cf2e2e\" class=\"tadv-color\">22<\/span><\/strong> :<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sudo ss -tlnpu | grep ssh<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"182\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_1.png\" alt=\"\" class=\"wp-image-483\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_1.png 721w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_1-300x76.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_1-150x38.png 150w\" sizes=\"auto, (max-width: 721px) 100vw, 721px\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size\">Nous allons \u00e0 pr\u00e9sent voir <strong>deux m\u00e9thode<\/strong>s pour changer ce fameux port par d\u00e9faut !<\/p>\n\n\n\n<div style=\"height:35px\" 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\">M\u00e9thode n\u00b01 :<\/h2>\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\">La <strong>premi\u00e8re<\/strong> est tout simplement d&rsquo;\u00e9diter le <strong>fichier de configuration du service <a href=\"https:\/\/mikadmin.fr\/blog\/tryhackme-overpass-3\/\" target=\"_blank\" rel=\"noreferrer noopener\">SSH<\/a><\/strong> avec votre \u00e9diteur favori.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sudo nano \/etc\/ssh\/sshd_config<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"280\" height=\"221\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_1.png\" alt=\"\" class=\"wp-image-486\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_1.png 280w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_1-150x118.png 150w\" sizes=\"auto, (max-width: 280px) 100vw, 280px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:35px\" 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\">M\u00e9thode n\u00b02 :<\/h2>\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\">La <strong>deuxi\u00e8me m\u00e9thode<\/strong> est d&rsquo;utiliser la commande <strong><span style=\"color:#cf2e2e\" class=\"tadv-color\">sed<\/span><\/strong> :<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sudo sed -i &quot;s\/#Port 22\/Port 49666\/&quot; \/etc\/ssh\/sshd_config<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"718\" height=\"97\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_2.png\" alt=\"\" class=\"wp-image-487\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_2.png 718w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_2-300x41.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/method_2-150x20.png 150w\" sizes=\"auto, (max-width: 718px) 100vw, 718px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:49px\" 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\">V\u00e9rification :<\/h2>\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\">Nous v\u00e9rifions \u00e0 pr\u00e9sent le changement mais avant tout il nous faut <strong><span style=\"color:#0693e3\" class=\"tadv-color\">red\u00e9marrer le service SSH.<\/span><\/strong><\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\" data-line=\"\">sudo service sshd restart\nsudo netstat -tlnpu | grep ssh<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"718\" height=\"144\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_3.png\" alt=\"\" class=\"wp-image-490\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_3.png 718w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_3-300x60.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/Screenshot_3-150x30.png 150w\" sizes=\"auto, (max-width: 718px) 100vw, 718px\" \/><\/figure><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size\">Nous pouvons \u00e0 pr\u00e9sent nous <strong>connecter<\/strong> avec le <strong>nouveau port<\/strong> via <strong><span style=\"color:#fcb900\" class=\"tadv-color\">SSH<\/span><\/strong> sur la machine :<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"599\" height=\"215\" src=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/verif.png\" alt=\"\" class=\"wp-image-491\" srcset=\"https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/verif.png 599w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/verif-300x108.png 300w, https:\/\/mikadmin.fr\/blog\/wp-content\/uploads\/2020\/12\/verif-150x54.png 150w\" sizes=\"auto, (max-width: 599px) 100vw, 599px\" \/><\/figure><\/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>To improve the security of your server and reduce brute force attacks, it is important to change the default SSH port to 22. <a href=\"https:\/\/mikadmin.fr\/blog\/how-to-change-the-default-ssh-port\/\" class=\"more-link\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":505,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[3],"tags":[11,9,10,29,30],"class_list":["post-480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-system","tag-config","tag-linux","tag-security","tag-ssh","tag-sysadmin"],"aioseo_notices":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/posts\/480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/comments?post=480"}],"version-history":[{"count":0,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/posts\/480\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/media\/505"}],"wp:attachment":[{"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/media?parent=480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/categories?post=480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mikadmin.fr\/blog\/wp-json\/wp\/v2\/tags?post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}