{"id":5114,"date":"2022-11-30T00:36:48","date_gmt":"2022-11-29T15:36:48","guid":{"rendered":"https:\/\/obenkyolab.com\/?p=5114"},"modified":"2022-11-30T00:36:48","modified_gmt":"2022-11-29T15:36:48","slug":"%e3%83%aa%e3%83%a2%e3%83%bc%e3%83%88%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%81%b8%e3%81%aessh%e6%8e%a5%e7%b6%9a%e6%99%82%e3%81%abconnection-refused%e3%81%95%e3%82%8c%e3%81%9f%e9%9a%9b%e3%81%ae","status":"publish","type":"post","link":"https:\/\/obenkyolab.com\/?p=5114","title":{"rendered":"\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u3078\u306eSSH\u63a5\u7d9a\u6642\u306bconnection refused\u3055\u308c\u305f\u969b\u306e\u5bfe\u51e6"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E6%A6%82%E8%A6%81\" >\u6982\u8981<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E7%92%B0%E5%A2%83\" >\u74b0\u5883<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E7%97%87%E7%8A%B6\" >\u75c7\u72b6<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E3%82%B3%E3%83%9E%E3%83%B3%E3%83%89%E3%83%97%E3%83%AD%E3%83%B3%E3%83%97%E3%83%88%E3%81%8B%E3%82%89%E7%A2%BA%E8%AA%8D\" >\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u304b\u3089\u78ba\u8a8d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#OpenSSH%E3%81%AE%E7%8A%B6%E6%B3%81%E7%A2%BA%E8%AA%8D\" >OpenSSH\u306e\u72b6\u6cc1\u78ba\u8a8d<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E5%AF%BE%E5%87%A6%E6%B3%95\" >\u5bfe\u51e6\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/obenkyolab.com\/?p=5114\/#%E3%81%9D%E3%82%82%E3%81%9D%E3%82%82%E3%81%AE%E5%8E%9F%E5%9B%A0\" >\u305d\u3082\u305d\u3082\u306e\u539f\u56e0<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A6%82%E8%A6%81\"><\/span>\u6982\u8981<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u3044\u3064\u3082\u306e\u3088\u3046\u306bPutty\u304b\u3089SSH\u63a5\u7d9a\u3092\u3057\u305f\u3068\u3053\u308d\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3064\u306a\u304c\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/obenkyolab.com\/wp-content\/uploads\/2022\/11\/image-2.png\" alt=\"\" class=\"wp-image-5115\" width=\"220\" height=\"122\" srcset=\"https:\/\/obenkyolab.com\/wp-content\/uploads\/2022\/11\/image-2.png 420w, https:\/\/obenkyolab.com\/wp-content\/uploads\/2022\/11\/image-2-300x166.png 300w\" sizes=\"auto, (max-width: 220px) 100vw, 220px\" \/><\/figure>\n\n\n\n<p>SSH\u5468\u308a\u306e\u8a2d\u5b9a\u3092\u4f55\u3082\u89e6\u3063\u305f\u899a\u3048\u304c\u306a\u3044\u306e\u306b\u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u305f\u3081\u3001\u7406\u7531\u304c\u5206\u304b\u3089\u305a\u306b\u304b\u306a\u308a\u6df7\u4e71\u3057\u307e\u3057\u305f\u3002\u843d\u3061\u7740\u3044\u3066\u30a8\u30e9\u30fc\u3092\u307f\u305f\u3068\u3053\u308d\u3001\u6a29\u9650\u5468\u308a\u304c\u539f\u56e0\u3060\u3063\u305f\u305f\u3081\u3001\u305d\u306e\u4e00\u9023\u306e\u5bfe\u51e6\u306b\u3064\u3044\u3066\u30e1\u30e2\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%92%B0%E5%A2%83\"><\/span>\u74b0\u5883<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CentOS7\uff08\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\uff09<\/li>\n\n\n\n<li>Putty\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%97%87%E7%8A%B6\"><\/span>\u75c7\u72b6<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u307e\u305a\u3001Putty\u304b\u3089SSH\u63a5\u7d9a\u3057\u305f\u969b\u3001\u3044\u3064\u3082\u306a\u3089\u3059\u3050\u306b\u3064\u306a\u304c\u308a\u8a8d\u8a3c\u5f85\u3061\u306b\u306a\u308b\u306e\u3060\u304c\u306a\u304b\u306a\u304b\u7e4b\u304c\u3089\u305a\u3001\u305d\u306e\u307e\u307e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002putty\u304b\u3089\u3060\u3068\u5358\u306bConnection timed out\u3068\u3057\u304b\u8868\u793a\u3055\u308c\u306a\u3044\u305f\u3081\u3088\u304f\u308f\u304b\u3089\u305a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%B3%E3%83%9E%E3%83%B3%E3%83%89%E3%83%97%E3%83%AD%E3%83%B3%E3%83%97%E3%83%88%E3%81%8B%E3%82%89%E7%A2%BA%E8%AA%8D\"><\/span>\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u304b\u3089\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>putty\u304c\u539f\u56e0\u306a\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u3068\u601d\u3044\u3001Windows\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u304b\u3089\u63a5\u7d9a\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>ssh &lt;user&gt;@&lt;hostname&gt; -p &lt;portnumber&gt;<\/code><\/pre><\/div>\n\n\n\n<p class=\"has-white-color has-black-background-color has-text-color has-background\">host xxxxxxxx  : Connection refused<\/p>\n\n\n\n<p>\u7d50\u679c\u306f\u540c\u3058\u304f\u3001\u63a5\u7d9a\u62d2\u5426\u3068\u3044\u3046\u5f62\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p>CentOS7\u30b5\u30fc\u30d0\u30fc\u81ea\u4f53\u306f\u8d77\u52d5\u3057\u3066\u3044\u305f\u305f\u3081\u3001\u76f4\u63a5CentOS7\u3078\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u8abf\u67fb\u3092\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"OpenSSH%E3%81%AE%E7%8A%B6%E6%B3%81%E7%A2%BA%E8%AA%8D\"><\/span>OpenSSH\u306e\u72b6\u6cc1\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u307e\u305a\u306fSSH\u304c\u52d5\u3044\u3066\u3044\u308b\u306e\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>systemctl status sshd.service<\/code><\/pre><\/div>\n\n\n\n<p>\u305d\u306e\u7d50\u679c\u3001SSH\u304c\u3069\u3046\u3082Active\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u69d8\u5b50\u3060\u3063\u305f\u305f\u3081\u3001\u518d\u5ea6\u8d77\u52d5\u3057\u76f4\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo systemctl start sshd.service<\/code><\/pre><\/div>\n\n\n\n<p>\u3059\u308b\u3068\u3001\u30d7\u30ed\u30bb\u30b9\u306e\u8d77\u52d5\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3046\u307e\u304f\u30b5\u30fc\u30d3\u30b9\u304c\u7acb\u3061\u4e0a\u304c\u3089\u305a\u3002<\/p>\n\n\n\n<p>\u30a8\u30e9\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>journalctl -xe<\/code><\/pre><\/div>\n\n\n\n<p>\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u6587\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"has-white-color has-black-background-color has-text-color has-background\">It is required that your private key files are NOT accessible<br>This private key will be ignored.<br>key_load_private: bad permissions<br>sshd.service : main process exited, code=exited, status=1\/FAILURE<\/p>\n\n\n\n<p>\u3069\u3046\u3084\u3089rsa\u30ad\u30fc\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u304c\u826f\u304f\u306a\u3044\u305b\u3044\u3067\u30ad\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u6642\u306b\u7121\u8996\u3055\u308c\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AF%BE%E5%87%A6%E6%B3%95\"><\/span>\u5bfe\u51e6\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u540c\u69d8\u306e\u4e8b\u8c61\u3092\u30cd\u30c3\u30c8\u3067\u8abf\u3079\u305f\u3068\u3053\u3001\u4ee5\u4e0b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3069\u3046\u3084\u3089\u6a29\u9650\u304c\u30aa\u30fc\u30d7\u30f3\u3059\u304e\u308b\u305f\u3081\u3001\u7d5e\u308b\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/knowledge.amimoto-ami.com\/knowledge\/managed-troubleshooting-warning-unprotected-private-key-file\">https:\/\/knowledge.amimoto-ami.com\/knowledge\/managed-troubleshooting-warning-unprotected-private-key-file<\/a><br>\u4e0a\u8a18\u3092\u53c2\u8003\u306b\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u6a29\u9650\u306e\u5909\u66f4\u3092\u5b9f\u65bd\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo chmod 0600 ssh_host_ecdsa_key<\/code><\/pre><\/div>\n\n\n\n<p>\u518d\u3073systemctl start sshd.service\u3067SSH\u3092\u8d77\u52d5\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u4eca\u5ea6\u306f\u7121\u4e8b\u306b\u8d77\u52d5\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"240\" height=\"56\" src=\"https:\/\/obenkyolab.com\/wp-content\/uploads\/2022\/11\/image-4.png\" alt=\"\" class=\"wp-image-5119\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%82%82%E3%81%9D%E3%82%82%E3%81%AE%E5%8E%9F%E5%9B%A0\"><\/span>\u305d\u3082\u305d\u3082\u306e\u539f\u56e0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u632f\u308a\u8fd4\u3063\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u3053\u306ersa\u30ad\u30fc\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u4e0a\u4f4d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u4e00\u62ec\u3067\u5909\u66f4\u3057\u305f\u3053\u3068\u304c\u3042\u3063\u305f\u3053\u3068\u306b\u6c17\u304c\u4ed8\u304d\u307e\u3057\u305f\u3002\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u5909\u66f4\u3067SSH\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u3068\u3044\u3046\u8a8d\u8b58\u304c\u306a\u304f\u3001\u6700\u521d\u306f\u7406\u7531\u304c\u5206\u304b\u3089\u305a\u7126\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u4e00\u62ec\u5909\u66f4\u306f\u4e88\u671f\u305b\u306c\u30c8\u30e9\u30d6\u30eb\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u304c\u5897\u5927\u3059\u308b\u305f\u3081\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 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