{"id":1320,"date":"2026-03-20T15:36:25","date_gmt":"2026-03-20T07:36:25","guid":{"rendered":"https:\/\/www.ygcloud.com\/knowledge\/?p=1320"},"modified":"2026-03-20T15:36:25","modified_gmt":"2026-03-20T07:36:25","slug":"ssh-%e8%bf%9e%e4%b8%8d%e4%b8%8a%e6%80%8e%e4%b9%88%e5%8a%9e%ef%bc%9a%e6%9c%80%e5%b8%b8%e8%a7%81-8-%e4%b8%aa%e5%8e%9f%e5%9b%a0%e5%92%8c%e6%8e%92%e6%9f%a5%e9%a1%ba%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/www.ygcloud.com\/knowledge\/1320\/","title":{"rendered":"SSH \u8fde\u4e0d\u4e0a\u600e\u4e48\u529e\uff1a\u6700\u5e38\u89c1 8 \u4e2a\u539f\u56e0\u548c\u6392\u67e5\u987a\u5e8f"},"content":{"rendered":"<p><!-- obsidian --><\/p>\n<p data-heading=\"\u4e00\u53e5\u8bdd\u7ed3\u8bba\">SSH \u8fde\u4e0d\u4e0a\u670d\u52a1\u5668\uff0c80% \u7684\u95ee\u9898\u51fa\u5728\u56db\u4e2a\u5730\u65b9\uff1a\u5bc6\u7801\u9519\u8bef\u3001\u7aef\u53e3\u88ab\u5c01\u3001\u5bc6\u94a5\u6ca1\u914d\u5bf9\u3001\u9632\u706b\u5899\u62e6\u4e86\u3002\u6309\u987a\u5e8f\u6392\u67e5\uff0c\u5341\u5206\u949f\u5185\u80fd\u627e\u5230\u6839\u6e90\u3002<\/p>\n<h2 data-heading=\"\u5148\u786e\u8ba4\u95ee\u9898\u5728\u54ea\u4e00\u6bb5\">\u5148\u786e\u8ba4\u95ee\u9898\u5728\u54ea\u4e00\u6bb5<\/h2>\n<p>SSH \u8fde\u4e0d\u4e0a\uff0c\u5148\u8981\u5224\u65ad\u662f&#8221;\u4f60\u81ea\u5df1\u7535\u8111\u7684\u95ee\u9898&#8221;\u8fd8\u662f&#8221;\u670d\u52a1\u5668\u7aef\u7684\u95ee\u9898&#8221;\uff0c\u4e24\u4e2a\u65b9\u5411\u7684\u6392\u67e5\u65b9\u6cd5\u5b8c\u5168\u4e0d\u540c\u3002<\/p>\n<p>\u6700\u7b80\u5355\u7684\u5224\u65ad\u65b9\u5f0f\uff1a\u7528 ping \u548c telnet \u505a\u57fa\u7840\u68c0\u6d4b\u3002<\/p>\n<p><strong>\u5728\u4f60\u672c\u5730\u7ec8\u7aef\u6267\u884c\uff1a<\/strong><\/p>\n<p>ping \u4f60\u7684\u670d\u52a1\u5668IP<br \/>\ntelnet \u4f60\u7684\u670d\u52a1\u5668IP 22<\/p>\n<p>ping \u4e0d\u901a\u2014\u2014\u8bf4\u660e\u7f51\u7edc\u5c42\u6709\u95ee\u9898\uff0c\u53ef\u80fd\u662f IP \u586b\u9519\u4e86\u3001\u670d\u52a1\u5668\u5b95\u673a\u4e86\u3001\u6216\u8005\u7f51\u7edc\u672c\u8eab\u4e0d\u901a\u3002ping \u901a\u4f46 telnet 22 \u7aef\u53e3\u4e0d\u901a\u2014\u2014\u8bf4\u660e TCP \u5c42\u6709\u95ee\u9898\uff0c\u7aef\u53e3\u88ab\u5c01\u6216\u8005\u670d\u52a1\u6ca1\u5f00\u3002ping \u548c telnet \u90fd\u901a\u4f46 SSH \u5ba2\u6237\u7aef\u62a5\u9519\u2014\u2014\u8bf4\u660e\u95ee\u9898\u5728 SSH \u534f\u8bae\u5c42\uff0c\u53ef\u80fd\u662f\u5bc6\u94a5\u3001\u914d\u7f6e\u6216\u8ba4\u8bc1\u95ee\u9898\u3002<\/p>\n<p>\u6309\u8fd9\u4e2a\u987a\u5e8f\u7f29\u5c0f\u8303\u56f4\uff0c\u80fd\u7701\u6389\u5927\u91cf\u65e0\u6548\u64cd\u4f5c\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u4e00\uff1a\u5bc6\u7801\u9519\u4e86\u6216\u8d26\u53f7\u586b\u9519\">\u539f\u56e0\u4e00\uff1a\u5bc6\u7801\u9519\u4e86\u6216\u8d26\u53f7\u586b\u9519<\/h2>\n<p>\u8fd9\u662f\u6700\u5e38\u89c1\u7684 SSH \u8fde\u4e0d\u4e0a\u7684\u539f\u56e0\uff0c\u4f46\u4e5f\u662f\u6700\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u2014\u2014\u56e0\u4e3a\u5f88\u591a\u4eba\u4e0d\u613f\u610f\u76f8\u4fe1\u81ea\u5df1\u4f1a\u586b\u9519\u3002<\/p>\n<p>\u5e38\u89c1\u9519\u8bef\u5305\u62ec\uff1aroot \u548c ubuntu \u7528\u6df7\u4e86\uff0c\u9ed8\u8ba4\u7528\u6237\u540d\u6bcf\u4e2a\u7cfb\u7edf\u4e0d\u540c\uff1b\u590d\u5236\u5bc6\u7801\u65f6\u591a\u4e86\u524d\u540e\u7a7a\u683c\uff0c\u7c98\u8d34\u8fdb\u53bb\u770b\u8d77\u6765\u4e00\u6837\u4f46\u5b9e\u9645\u4e0d\u5bf9\uff1b\u5728\u7ec8\u7aef\u91cc\u8f93\u5165\u5bc6\u7801\u65f6\u5149\u6807\u4e0d\u79fb\u52a8\uff0c\u4f60\u4ee5\u4e3a\u6ca1\u8f93\u5165\u5b9e\u9645\u4e0a\u5df2\u7ecf\u8f93\u5165\u4e86\uff1b\u7aef\u53e3\u53f7\u586b\u9519\uff0c\u5c24\u5176\u662f\u4ece\u9ed8\u8ba4 22 \u6539\u8fc7\u7aef\u53e3\u4e4b\u540e\u3002<\/p>\n<p>\u600e\u4e48\u786e\u8ba4\uff1a\u767b\u5f55\u4e91\u63a7\u5236\u53f0\u7684 VNC\/Web Console\uff08\u8fd9\u4e2a\u4e0d\u4f9d\u8d56 SSH\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fdb\u670d\u52a1\u5668\uff09\uff0c\u7136\u540e\u67e5\u770b\u767b\u5f55\u8bb0\u5f55\uff1a<\/p>\n<pre><code>tail -n 20 \/var\/log\/auth.log\r\n<\/code><\/pre>\n<p>\u5982\u679c\u770b\u5230 &#8220;Failed password&#8221;\uff0c\u8bf4\u660e\u662f\u5bc6\u7801\u95ee\u9898\u3002\u89e3\u51b3\u65b9\u5f0f\u662f\u5728\u63a7\u5236\u53f0\u7528 <code>passwd<\/code> \u547d\u4ee4\u91cd\u7f6e\u5bc6\u7801\uff0c\u6216\u8005\u786e\u8ba4\u7528\u6237\u540d\u662f\u5426\u6b63\u786e\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u4e8c\uff1a\u7aef\u53e3 22 \u88ab\u5c01\u6216\u7aef\u53e3\u6539\u4e86\">\u539f\u56e0\u4e8c\uff1a\u7aef\u53e3 22 \u88ab\u5c01\u6216\u7aef\u53e3\u6539\u4e86<\/h2>\n<p>\u56fd\u5185\u90e8\u5206\u8fd0\u8425\u5546\u4f1a\u5c01\u9501 22 \u7aef\u53e3\u2014\u2014\u8fd9\u4e0d\u662f\u670d\u52a1\u5668\u7aef\u7684\u95ee\u9898\uff0c\u662f\u4f60\u672c\u5730\u7684\u7f51\u7edc\u51fa\u53e3\u5728\u8fc7\u6ee4\u3002\u5982\u679c\u4f60\u5728\u516c\u53f8\u7f51\u7edc\u6216\u5b66\u6821\u7f51\u7edc\u4e0b\u7ecf\u5e38\u8fde\u4e0d\u4e0a\uff0c\u6362\u4e00\u4e2a\u7f51\u7edc\uff08\u624b\u673a 4G \u70ed\u70b9\uff09\u8bd5\u8bd5\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u5e38\u89c1\u60c5\u51b5\uff1a\u670d\u52a1\u5668\u7aef\u628a SSH \u7aef\u53e3\u4ece\u9ed8\u8ba4\u7684 22 \u6539\u6210\u4e86\u5176\u4ed6\u7aef\u53e3\uff08\u6bd4\u5982 2222\uff09\uff0c\u4f46\u4f60\u672c\u5730\u5ba2\u6237\u7aef\u8fd8\u5728\u7528 22\uff0c\u5bfc\u81f4\u8fde\u4e0d\u4e0a\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5\uff1a\u7528 telnet \u6d4b\u4e00\u4e0b\u5e38\u7528\u7aef\u53e3\uff1a<\/p>\n<pre><code>telnet \u670d\u52a1\u5668IP 22\r\ntelnet \u670d\u52a1\u5668IP 2222\r\n<\/code><\/pre>\n<p>\u54ea\u4e2a\u7aef\u53e3\u6709\u54cd\u5e94\uff0c\u5c31\u7528\u54ea\u4e2a\u7aef\u53e3\u8fde\u3002\u6216\u8005\u767b\u5f55\u63a7\u5236\u53f0\u67e5\u770b <code>\/etc\/ssh\/sshd_config<\/code> \u91cc <code>Port<\/code> \u5b57\u6bb5\u7684\u503c\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u4e09\uff1aSSH \u5bc6\u94a5\u6ca1\u6709\u914d\u5bf9\">\u539f\u56e0\u4e09\uff1aSSH \u5bc6\u94a5\u6ca1\u6709\u914d\u5bf9<\/h2>\n<p>\u5982\u679c\u4f60\u7528\u7684\u662f\u5bc6\u94a5\u767b\u5f55\uff0c\u8fde\u4e0d\u4e0a\u5f88\u53ef\u80fd\u662f\u56e0\u4e3a\u516c\u94a5\u79c1\u94a5\u6ca1\u914d\u5bf9\u3002<\/p>\n<p>\u5148\u786e\u8ba4\u672c\u5730\u79c1\u94a5\u6587\u4ef6\u662f\u5426\u5b58\u5728\u4e14\u6743\u9650\u6b63\u786e\uff1a<\/p>\n<pre><code>ls -la ~\/.ssh\/id_rsa\r\nchmod 600 ~\/.ssh\/id_rsa\r\n<\/code><\/pre>\n<p>\u79c1\u94a5\u6743\u9650\u5fc5\u987b\u662f 600\uff0c\u5426\u5219 SSH \u5ba2\u6237\u7aef\u4f1a\u62d2\u7edd\u4f7f\u7528\u3002<\/p>\n<p>\u7136\u540e\u786e\u8ba4\u670d\u52a1\u5668\u7aef <code>~\/.ssh\/authorized_keys<\/code> \u6587\u4ef6\u91cc\u6709\u4f60\u7684\u516c\u94a5\u5185\u5bb9\u3002\u53ef\u4ee5\u7528\u8fd9\u4e2a\u547d\u4ee4\u67e5\u770b\u672c\u5730\u516c\u94a5\uff1a<\/p>\n<pre><code>cat ~\/.ssh\/id_rsa.pub\r\n<\/code><\/pre>\n<p>\u628a\u8fd9\u4e2a\u5185\u5bb9\u590d\u5236\u5230\u670d\u52a1\u5668 <code>~\/.ssh\/authorized_keys<\/code> \u6587\u4ef6\u91cc\uff08\u6bcf\u884c\u4e00\u4e2a\u516c\u94a5\uff09\uff0c\u4fdd\u5b58\u540e\u6743\u9650\u8bbe\u4e3a 600\uff0c\u518d\u91cd\u542f sshd\uff1a<\/p>\n<pre><code>chmod 600 ~\/.ssh\/authorized_keys\r\nsudo systemctl restart sshd\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4e0d\u786e\u5b9a\u662f\u4e0d\u662f\u5bc6\u94a5\u95ee\u9898\uff0c\u5148\u4e34\u65f6\u5207\u6362\u5230\u5bc6\u7801\u767b\u5f55\u8bd5\u8bd5\uff1a\u5728\u670d\u52a1\u5668 <code>\/etc\/ssh\/sshd_config<\/code> \u91cc\u628a <code>PasswordAuthentication yes<\/code> \u6253\u5f00\uff0c\u91cd\u542f sshd \u540e\u7528\u5bc6\u7801\u767b\u5f55\u6d4b\u8bd5\uff0c\u80fd\u767b\u5f55\u5c31\u8bf4\u660e\u662f\u5bc6\u94a5\u95ee\u9898\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u56db\uff1a\u9632\u706b\u5899\u62e6\u4e86\">\u539f\u56e0\u56db\uff1a\u9632\u706b\u5899\u62e6\u4e86<\/h2>\n<p>\u670d\u52a1\u5668\u7aef\u9632\u706b\u5899\u662f\u62e6 SSH \u7684\u91cd\u707e\u533a\uff0c\u6392\u67e5\u987a\u5e8f\u5efa\u8bae\u662f\uff1a\u672c\u5730\u9632\u706b\u5899 \u2192 \u670d\u52a1\u5668\u9632\u706b\u5899 \u2192 \u4e91\u5e73\u53f0\u5b89\u5168\u7ec4\u3002<\/p>\n<p>\u5148\u770b\u670d\u52a1\u5668\u7aef\u9632\u706b\u5899\u72b6\u6001\uff1a<\/p>\n<pre><code># Ubuntu\/Debian\r\nsudo ufw status\r\n\r\n# CentOS\r\nsudo firewall-cmd --list-all\r\n<\/code><\/pre>\n<p>\u5982\u679c\u770b\u5230 22 \u7aef\u53e3\u5728 deny \u5217\u8868\u91cc\uff0c\u653e\u884c\u5b83\uff1a<\/p>\n<pre><code>sudo ufw allow 22\r\nsudo systemctl restart sshd\r\n<\/code><\/pre>\n<h2 data-heading=\"\u539f\u56e0\u4e94\uff1a\u4e91\u5e73\u53f0\u5b89\u5168\u7ec4\u6ca1\u653e\u884c\">\u539f\u56e0\u4e94\uff1a\u4e91\u5e73\u53f0\u5b89\u5168\u7ec4\u6ca1\u653e\u884c<\/h2>\n<p>\u8fd9\u662f\u65b0\u624b\u6700\u5bb9\u6613\u5ffd\u7565\u7684\u539f\u56e0\uff0c\u4e5f\u662f\u6700\u96be\u53d1\u73b0\u7684\u539f\u56e0\u3002\u670d\u52a1\u5668\u5728\u4e91\u5e73\u53f0\u4e0a\u8fd0\u884c\uff0c\u9664\u4e86\u670d\u52a1\u5668\u5185\u90e8\u7684\u9632\u706b\u5899\uff0c\u8fd8\u6709\u4e00\u4e2a\u4e91\u5e73\u53f0\u5c42\u7684\u5b89\u5168\u7ec4\u7b56\u7565\uff0c\u5f88\u591a\u4eba\u662f\u683d\u5728\u8fd9\u91cc\u7684\u3002<\/p>\n<p>\u4e0d\u540c\u4e91\u5e73\u53f0\u7684\u5b89\u5168\u7ec4\u914d\u7f6e\u4f4d\u7f6e\u4e0d\u540c\uff1a<\/p>\n<p>\u963f\u91cc\u4e91\uff1aECS \u63a7\u5236\u53f0 \u2192 \u5b9e\u4f8b \u2192 \u5b89\u5168\u7ec4 \u2192 \u914d\u7f6e\u89c4\u5219\u3002\u817e\u8baf\u4e91\uff1a\u4e91\u670d\u52a1\u5668\u63a7\u5236\u53f0 \u2192 \u9632\u706b\u5899\u89c4\u5219\u3002AWS\uff1aEC2 \u2192 \u5b89\u5168\u7ec4 \u2192 \u5165\u7ad9\u89c4\u5219\u3002\u8424\u5149\u4e91\uff1a\u63a7\u5236\u53f0 \u2192 \u9632\u706b\u5899\/\u5b89\u5168\u7ec4\u3002<\/p>\n<p>\u6807\u51c6\u64cd\u4f5c\u662f\uff1a\u6dfb\u52a0\u5165\u7ad9\u89c4\u5219\uff0c\u5141\u8bb8 TCP 22 \u7aef\u53e3\u4ece 0.0.0.0\/0\uff08\u6216\u8005\u4f60\u7684 IP\uff09\u8bbf\u95ee\u3002\u653e\u884c\u540e\u7b49 1-2 \u5206\u949f\u751f\u6548\uff0c\u4e0d\u8981\u7acb\u523b\u91cd\u8bd5\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u516d\uff1a\u670d\u52a1\u5546\u5c01\u4e86 IP \u6216\u7aef\u53e3\">\u539f\u56e0\u516d\uff1a\u670d\u52a1\u5546\u5c01\u4e86 IP \u6216\u7aef\u53e3<\/h2>\n<p>\u5982\u679c\u4f60\u53d1\u73b0 ping \u901a\u4f46 22 \u7aef\u53e3\u4e0d\u901a\uff0c\u6362\u4e86\u4e00\u4e2a\u7f51\u7edc\uff08\u6bd4\u5982\u624b\u673a\u5f00\u70ed\u70b9\uff09\u53d1\u73b0\u80fd\u8fde\uff0c\u8bf4\u660e\u662f\u4f60\u7684\u672c\u5730 IP \u88ab\u670d\u52a1\u5668\u7aef\u5c01\u4e86\u3002\u8fd9\u79cd\u60c5\u51b5\u5e38\u89c1\u4e8e\u5171\u4eab IP \u6bb5\u88ab\u6ee5\u7528\uff0c\u6216\u8005\u7aef\u53e3\u626b\u63cf\u89e6\u53d1\u4e86\u670d\u52a1\u5546\u7684\u81ea\u52a8\u5c01\u7981\u673a\u5236\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5\uff1a\u8054\u7cfb\u670d\u52a1\u5546\u66f4\u6362 IP\uff0c\u6216\u8005\u5728\u4e91\u63a7\u5236\u53f0\u67e5\u770b\u662f\u5426\u6709 IP \u88ab\u5c01\u7684\u72b6\u6001\u63d0\u793a\u3002\u5982\u679c\u662f\u4e91\u670d\u52a1\u5668\uff0c\u5927\u591a\u6570\u5e73\u53f0\u63d0\u4f9b\u514d\u8d39\u6362 IP \u7684\u9009\u9879\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u4e03\uff1aSSH \u670d\u52a1\u6ca1\u542f\u52a8\u6216\u5d29\u6e83\u4e86\">\u539f\u56e0\u4e03\uff1aSSH \u670d\u52a1\u6ca1\u542f\u52a8\u6216\u5d29\u6e83\u4e86<\/h2>\n<p>\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u670d\u52a1\u5668\u8d1f\u8f7d\u8fc7\u9ad8\u6216\u8005\u88ab\u4eba\u6253\u7206\u4e86\uff0cSSHD \u8fdb\u7a0b\u53ef\u80fd\u65e0\u54cd\u5e94\u6216\u8005\u5d29\u6e83\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b SSH \u80af\u5b9a\u8fde\u4e0d\u4e0a\u3002<\/p>\n<p>\u6392\u67e5\u65b9\u5f0f\uff1a\u767b\u5f55\u4e91\u63a7\u5236\u53f0\u7684 Web Console\uff08\u8fd9\u4e2a\u4e0d\u8d70 SSH\uff09\uff0c\u6267\u884c\uff1a<\/p>\n<pre><code>systemctl status sshd\r\n<\/code><\/pre>\n<p>\u5982\u679c\u770b\u5230 &#8220;inactive&#8221; \u6216 &#8220;failed&#8221;\uff0c\u8bf4\u660e\u670d\u52a1\u6ca1\u542f\u52a8\u3002\u6267\u884c\uff1a<\/p>\n<pre><code>sudo systemctl restart sshd\r\n<\/code><\/pre>\n<p>\u628a SSH \u670d\u52a1\u91cd\u542f\u4e00\u4e0b\u3002\u5982\u679c\u8d1f\u8f7d\u8fc7\u9ad8\u5bfc\u81f4\u7684\u95ee\u9898\uff0c\u9700\u8981\u5148\u5904\u7406\u9ad8\u8d1f\u8f7d\u7684\u539f\u56e0\uff08\u53ef\u80fd\u662f\u88ab\u653b\u51fb\u3001\u8dd1\u6ee1 CPU\/\u5185\u5b58\u7684\u8fdb\u7a0b\u7b49\uff09\u3002<\/p>\n<h2 data-heading=\"\u539f\u56e0\u516b\uff1a\u672c\u5730 SSH \u5ba2\u6237\u7aef\u914d\u7f6e\u95ee\u9898\">\u539f\u56e0\u516b\uff1a\u672c\u5730 SSH \u5ba2\u6237\u7aef\u914d\u7f6e\u95ee\u9898<\/h2>\n<p>\u6392\u9664\u4e86\u4ee5\u4e0a\u6240\u6709\u670d\u52a1\u5668\u7aef\u539f\u56e0\u4e4b\u540e\uff0c\u95ee\u9898\u53ef\u80fd\u51fa\u5728\u672c\u5730\u3002<\/p>\n<p>\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\uff1a<code>~\/.ssh\/known_hosts<\/code> \u6587\u4ef6\u91cc\u8bb0\u5f55\u4e86\u65e7\u7684\u670d\u52a1\u5668\u6307\u7eb9\uff0c\u670d\u52a1\u5668\u91cd\u88c5\u7cfb\u7edf\u540e\u6307\u7eb9\u53d8\u4e86\uff0cSSH \u5ba2\u6237\u7aef\u4f1a\u62d2\u7edd\u8fde\u63a5\u5e76\u62a5\u9519 &#8220;WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED&#8221;\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n<pre><code>ssh-keygen -R \u670d\u52a1\u5668IP\r\n<\/code><\/pre>\n<p>\u5220\u9664\u65e7\u7684\u8bb0\u5f55\u540e\u518d\u8fde\uff0c\u4f1a\u8ba9\u4f60\u91cd\u65b0\u786e\u8ba4\u65b0\u6307\u7eb9\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u95ee\u9898\uff1a\u8fde\u63a5\u8d85\u65f6\u8bbe\u7f6e\u592a\u77ed\u3002\u7f16\u8f91 <code>~\/.ssh\/config<\/code>\uff0c\u589e\u52a0\u8d85\u65f6\u65f6\u95f4\uff1a<\/p>\n<pre><code>Host *\r\n    ServerAliveInterval 60\r\n    ServerAliveCountMax 3\r\n    ConnectTimeout 30\r\n<\/code><\/pre>\n<h2 data-heading=\"\u6392\u67e5\u987a\u5e8f\u603b\u7ed3\">\u6392\u67e5\u987a\u5e8f\u603b\u7ed3<\/h2>\n<p>\u9047\u5230 SSH \u8fde\u4e0d\u4e0a\uff0c\u6309\u8fd9\u4e2a\u987a\u5e8f\u67e5\uff1a<\/p>\n<p>\u7b2c\u4e00\u6b65\uff1aping \u670d\u52a1\u5668 IP\uff0c\u770b\u7f51\u7edc\u901a\u4e0d\u901a\u3002\u4e0d\u901a\u2014\u2014\u670d\u52a1\u5668\u53ef\u80fd\u5b95\u673a\u4e86\uff0c\u8054\u7cfb\u670d\u52a1\u5546\u3002\u4e0d\u901a\u4f46\u80fd ping \u5176\u4ed6\u7f51\u7ad9\u2014\u2014\u53ef\u80fd\u662f\u670d\u52a1\u5668\u88ab DDoS \u5c01\u4e86\u3002<\/p>\n<p>\u7b2c\u4e8c\u6b65\uff1a\u6362\u7f51\u7edc\u3002\u7528\u624b\u673a 4G \u70ed\u70b9\u8bd5\u8bd5\u3002\u80fd\u8fde\u4e86\u2014\u2014\u8bf4\u660e\u672c\u5730\u7f51\u7edc\uff08\u516c\u53f8\u7f51\/\u6821\u56ed\u7f51\uff09\u5c01\u4e86 22 \u7aef\u53e3\u3002<\/p>\n<p>\u7b2c\u4e09\u6b65\uff1aping \u901a\u4f46 telnet 22 \u7aef\u53e3\u4e0d\u901a\u2014\u2014\u9632\u706b\u5899\u6216\u5b89\u5168\u7ec4\u62e6\u4e86\u3002\u767b\u5f55\u4e91\u63a7\u5236\u53f0 Web Console \u6392\u67e5\u3002<\/p>\n<p>\u7b2c\u56db\u6b65\uff1a\u9010\u9879\u68c0\u67e5\u4ee5\u4e0a\u516b\u4e2a\u539f\u56e0\uff0c\u6309\u987a\u5e8f\u6392\u67e5\uff1a\u5bc6\u7801\/\u8d26\u53f7 \u2192 \u7aef\u53e3 \u2192 \u5bc6\u94a5 \u2192 \u9632\u706b\u5899 \u2192 \u5b89\u5168\u7ec4 \u2192 IP \u88ab\u5c01 \u2192 \u670d\u52a1\u72b6\u6001 \u2192 \u5ba2\u6237\u7aef\u914d\u7f6e\u3002<\/p>\n<p>\u5e38\u7528\u547d\u4ee4\u901f\u67e5\uff1a<\/p>\n<pre><code>ping \u670d\u52a1\u5668IP\r\ntelnet \u670d\u52a1\u5668IP 22\r\nssh -v \u7528\u6237\u540d@\u670d\u52a1\u5668IP -p \u7aef\u53e3\r\nssh-keygen -R \u670d\u52a1\u5668IP\r\nsudo systemctl status sshd\r\nsudo ufw status\r\n<\/code><\/pre>\n<h2 data-heading=\"\u4e0b\u4e00\u6b65\">\u4e0b\u4e00\u6b65<\/h2>\n<p>\u5982\u679c\u6309\u4ee5\u4e0a\u987a\u5e8f\u6392\u67e5\u5b8c\u8fd8\u662f\u8fde\u4e0d\u4e0a\uff0c\u5927\u6982\u7387\u662f\u670d\u52a1\u5668\u672c\u8eab\u7684\u95ee\u9898\uff08\u7cfb\u7edf\u5d29\u6e83\u3001\u78c1\u76d8\u6ee1\u4e86\u3001\u88ab\u4eba\u5165\u4fb5\u4e86\uff09\uff0c\u5efa\u8bae\u76f4\u63a5\u901a\u8fc7\u4e91\u63a7\u5236\u53f0\u7684 VNC\/Web Console \u767b\u5f55\u670d\u52a1\u5668\uff0c\u4ece\u670d\u52a1\u5668\u5185\u90e8\u6392\u67e5\u3002\u8424\u5149\u4e91\u5e73\u53f0\u63d0\u4f9b 7&#215;24 \u5c0f\u65f6\u7684\u63a7\u5236\u53f0\u8bbf\u95ee\uff0c\u9047\u5230 SSH \u8fde\u4e0d\u4e0a\u7684\u7d27\u6025\u60c5\u51b5\uff0c\u53ef\u4ee5\u5148\u901a\u8fc7\u63a7\u5236\u53f0\u767b\u5f55\u6392\u67e5\uff0c\u5e73\u53f0\u4e5f\u6709\u4e13\u95e8\u7684\u6280\u672f\u6587\u6863\u8986\u76d6\u5e38\u89c1\u7684\u8fde\u63a5\u95ee\u9898\u3002\u65b0\u7528\u6237\u5efa\u8bae\u5148\u5728\u5e73\u53f0\u63d0\u4f9b\u7684\u4f53\u9a8c\u673a\u91cc\u719f\u6089\u4e00\u4e0b\u57fa\u672c\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SSH \u8fde\u4e0d\u4e0a\u670d\u52a1\u5668\uff0c80% \u7684\u95ee\u9898\u51fa\u5728\u56db\u4e2a\u5730\u65b9\uff1a\u5bc6\u7801\u9519\u8bef\u3001\u7aef\u53e3\u88ab\u5c01\u3001\u5bc6\u94a5\u6ca1\u914d\u5bf9\u3001\u9632\u706b\u5899\u62e6\u4e86\u3002\u6309\u987a\u5e8f\u6392\u67e5\uff0c\u5341\u5206\u949f\u5185\u80fd\u627e\u5230\u6839\u6e90\u3002 \u5148\u786e\u8ba4\u95ee\u9898\u5728\u54ea\u4e00\u6bb5 SSH \u8fde\u4e0d\u4e0a\uff0c\u5148\u8981\u5224\u65ad\u662f&#8221;\u4f60\u81ea\u5df1\u7535\u8111\u7684\u95ee\u9898&#8221;\u8fd8\u662f&#8221;\u670d\u52a1&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1321,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[42],"topic":[],"class_list":["post-1320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-support","tag-42"],"_links":{"self":[{"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/posts\/1320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/comments?post=1320"}],"version-history":[{"count":2,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/posts\/1320\/revisions"}],"predecessor-version":[{"id":1326,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/posts\/1320\/revisions\/1326"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/media\/1321"}],"wp:attachment":[{"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/media?parent=1320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/categories?post=1320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/tags?post=1320"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.ygcloud.com\/knowledge\/wp-json\/wp\/v2\/topic?post=1320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}