{"id":2149,"date":"2020-04-30T11:29:07","date_gmt":"2020-04-30T03:29:07","guid":{"rendered":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/?p=2149"},"modified":"2026-03-04T09:52:51","modified_gmt":"2026-03-04T01:52:51","slug":"ssh-%e9%85%8d%e7%bd%ae%e8%af%81%e4%b9%a6%e7%99%bb%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2020\/04\/30\/ssh-%e9%85%8d%e7%bd%ae%e8%af%81%e4%b9%a6%e7%99%bb%e5%bd%95\/","title":{"rendered":"SSH \u914d\u7f6e\u8bc1\u4e66\u767b\u5f55"},"content":{"rendered":"\n<p>SSHd \u914d\u7f6e\u91c7\u53d6\u4e86\u4e00\u4e9b\u5b89\u5168\u63aa\u65bd\uff0c\u6bd4\u5982\uff1a\u4fee\u6539\u7aef\u53e3\u3001\u7981\u6b62 root \u8fdc\u7a0b\u767b\u5f55\uff08<a rel=\"noreferrer noopener\" href=\"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2014\/06\/22\/vps%e5%8d%87%e7%ba%a7debian%e7%9a%84%e5%87%a0%e7%82%b9%e5%b0%8f%e4%ba%8b%e9%a1%b9\/\" target=\"_blank\">\u8fd9\u91cc<\/a>\uff09\u3001\u542f\u52a8 fail2ban \u9632\u6b62\u6076\u610f\u767b\u5f55\uff08<a rel=\"noreferrer noopener\" href=\"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2014\/03\/18\/%e4%bd%bf%e7%94%a8fail2ban%e9%98%b2%e6%ad%a2%e6%81%b6%e6%84%8fssh%e7%99%bb%e9%99%86\/\" target=\"_blank\">\u8fd9\u91cc<\/a>\uff09\uff0c\u7b49\u7b49\u3002\u76ee\u524d\u770b\u8fd9\u4e9b\u63aa\u65bd\u57fa\u672c\u6ee1\u8db3\u4e86\u65e5\u5e38\u7684\u7ef4\u62a4\u7ba1\u7406\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u901a\u5e38\u8fd8\u4f1a\u91c7\u53d6\u8bc1\u4e66\u767b\u5f55\u65b9\u5f0f\uff0c\u7981\u6b62\u5bc6\u7801\u9274\u6743\u767b\u5f55\u3002\u4e0d\u8fc7\u4ee5\u5f80\u8003\u8651\u5230\u5bc6\u7801\u65b9\u5f0f\u66f4\u65b9\u4fbf\uff0c\u56e0\u6b64\u6ca1\u6709\u52a8\u529b\u53bb\u4fee\u6539\u3002\u65f6\u95f4\u5c31\u8fd9\u4e48\u8fc7\u53bb\u4e86\u2026\u2026<\/p>\n\n\n\n<p>\u6700\u8fd1\u767b\u5f55\u670d\u52a1\u5668\u68c0\u67e5\u65e5\u5fd7\uff0c \u60ca\u8bb6\u5730\u53d1\u73b0 fail2ban \u6bcf\u65e5\u7684\u65e5\u5fd7\u5c45\u7136\u6709\u5341\u51e0M\u4e4b\u591a\uff0c\u5168\u662f\u5404\u7c7b\u5947\u8469\u4ee5\u5404\u79cd\u65b9\u5f0f\u5c1d\u8bd5\u767b\u5f55 SSH\u3002\u867d\u7136 fail2ban \u5de5\u4f5c\u5f97\u5f88\u597d\uff0c\u4f46\u662f\u4e07\u4e00\u51fa\u73b0\u4e86 bug \u5462\uff1f \u4e07\u4e00\u54ea\u4e2a\u53d8\u6001\u5c31\u662f\u9532\u800c\u4e0d\u820d\u3001\u7ecf\u5e74\u7d2f\u6708\u5730\u5c1d\u8bd5\u767b\u5f55\u5462\uff1f\u5e94\u8be5\u4e0b\u72e0\u624b\uff0c\u8ba9\u8001\u94c1\u4eec\u5f7b\u5e95\u7edd\u671b\uff0c\u56e0\u6b64\u51b3\u5b9a\u7981\u6b62\u5bc6\u7801\u65b9\u5f0f\u767b\u5f55\uff0c\u8981\u6c42\u91c7\u7528\u8bc1\u4e66\u767b\u5f55\u3002<\/p>\n\n\n\n<p>\u914d\u7f6e\u4e0d\u590d\u6742\uff0c\u6d89\u53ca\u5ba2\u6237\u7aef\u751f\u6210\u8bc1\u4e66\u5bc6\u94a5\uff0c\u4ee5\u53ca\u5c06\u516c\u94a5\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7b49\u3002\u4e3b\u8981\u53c2\u8003 <a rel=\"noreferrer noopener\" href=\"https:\/\/www.linode.com\/?r=ffb7ed7011aca11e35b107114218cd37227460c8\" target=\"_blank\">Linode<\/a> \u7684\u4e24\u7bc7\u914d\u7f6e\u6587\u6863\uff08<a rel=\"noreferrer noopener\" href=\"https:\/\/www.linode.com\/docs\/security\/securing-your-server\/#ssh-daemon-options\" target=\"_blank\">\u8fd9\u91cc<\/a>\u548c<a rel=\"noreferrer noopener\" href=\"https:\/\/www.linode.com\/docs\/security\/authentication\/use-public-key-authentication-with-ssh\/\" target=\"_blank\">\u8fd9\u91cc<\/a>\uff09\u3002 \u4ee5\u4e0b\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u751f\u6210\u8bc1\u4e66<\/h3>\n\n\n\n<p>\u5ba2\u6237\u7aef\u4e5f\u662f Linux \u7cfb\u7edf\uff0c\u56e0\u6b64\u76f8\u5f53\u7b80\u5355\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">ssh-keygen -t ed25519 -b 4096<\/pre>\n\n\n\n<p>\u8be5\u547d\u4ee4\u5728\u5f53\u524d\u7528\u6237\u7684 .ssh \u76ee\u5f55\u4e0b\u521b\u5efa\u4e86\u4e24\u4e2a\u6587\u4ef6\uff1a id_ed25519 \u4ee5\u53ca id_ed25519.pub \u3002<\/p>\n\n\n\n<p>\u5176\u4e2d \u201cid_ed25519.pub\u201d \u662f\u5f53\u524d\u7528\u6237\u7684\u516c\u94a5\u6587\u4ef6\uff0c\u5c06\u5176\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u4e0a\uff0c\u7136\u540e\u6dfb\u52a0\u8fdb <em>~\/.ssh\/authorized_keys<\/em> \u6587\u4ef6\u4e2d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cat id_ed25519.pub >> <em>~\/<\/em>.ssh\/authorized_keys<\/pre>\n\n\n\n<p>\u6dfb\u52a0\u5b8c\u6210\u540e\uff0c\u670d\u52a1\u5668\u4e0a\u7684 id_rsa.pub \u6587\u4ef6\u4e0d\u7528\u518d\u4fdd\u7559\uff0c\u5220\u9664\u5373\u53ef\u3002\u8981\u6ce8\u610f\uff0cauthorized_keys \u6587\u4ef6\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u522b\u4eba\u4e0d\u5141\u8bb8\u8bbf\u95ee\uff0c\u786e\u4fdd\u8db3\u591f\u7684\u5b89\u5168\u6027\u3002\u4f8b\u5982\u8bbe\u7f6e\u6587\u4ef6\u6743\u9650\u4e3a600\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">chmod 600 authorized_keys<\/pre>\n\n\n\n<p>\u5f53 SSH \u5ba2\u6237\u7aef\u767b\u5f55\u65f6\uff0c SSHd \u9ed8\u8ba4\u8bfb\u53d6\u8be5\u7528\u6237\u7684 authorized_keys \u4fe1\u606f\u8fdb\u884c\u8bc1\u4e66\u9274\u6743\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u6539 \/etc\/ssh\/sshd_config \u6587\u4ef6<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">PasswordAuthentication no<\/pre>\n\n\n\n<p>\u7136\u540e\u91cd\u542f sshd \u5373\u53ef\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sudo systemctl restart sshd<\/pre>\n\n\n\n<p>\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u5982\u679c\u91c7\u7528\u5bc6\u7801\u9274\u6743\u65b9\u5f0f\u767b\u5f55\uff0c\u6216\u8005\u7c97\u66b4\u7834\u89e3\uff0c\u5c06\u88ab\u65e0\u60c5\u62d2\u7edd\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6709\u591a\u4e2a\u5ba2\u6237\u7aef\u9700\u8981\u767b\u5f55\u670d\u52a1\u5668\uff0c\u5219\u9700\u8981\u5404\u81ea\u751f\u6210\u8bc1\u4e66\uff0c\u5e76\u5c06\u516c\u94a5\u4e0a\u4f20\u5230\u670d\u52a1\u5668\uff0c\u5e76\u6dfb\u52a0\u5230 <em>authorized_keys<\/em> \u6587\u4ef6\u4e2d\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SSHd \u914d\u7f6e\u91c7\u53d6\u4e86\u4e00\u4e9b\u5b89\u5168\u63aa\u65bd\uff0c\u6bd4\u5982\uff1a\u4fee\u6539\u7aef\u53e3\u3001\u7981\u6b62 root \u8fdc\u7a0b\u767b\u5f55\uff08\u8fd9\u91cc\uff09\u3001\u542f\u52a8 fail2ban \u9632\u6b62\u6076\u610f\u767b\u5f55\uff08\u8fd9\u91cc\uff09\uff0c\u7b49\u7b49\u3002\u76ee\u524d\u770b\u8fd9\u4e9b\u63aa\u65bd\u57fa\u672c\u6ee1\u8db3\u4e86&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.myvoipapp.com\/blogs\/yxh\/2020\/04\/30\/ssh-%e9%85%8d%e7%bd%ae%e8%af%81%e4%b9%a6%e7%99%bb%e5%bd%95\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[78,11,328,764,765,766],"class_list":["post-2149","post","type-post","status-publish","format-standard","hentry","category-53","tag-debian","tag-linux","tag-ssh","tag-sshd_config","tag-765","tag-766"],"_links":{"self":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/2149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/comments?post=2149"}],"version-history":[{"count":5,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/2149\/revisions"}],"predecessor-version":[{"id":2749,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/posts\/2149\/revisions\/2749"}],"wp:attachment":[{"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/media?parent=2149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/categories?post=2149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.myvoipapp.com\/blogs\/yxh\/wp-json\/wp\/v2\/tags?post=2149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}