{"id":33393,"date":"2026-10-08T10:00:00","date_gmt":"2026-10-08T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33393"},"modified":"2026-10-09T11:47:33","modified_gmt":"2026-10-09T03:47:33","slug":"ssh-certificate-auth-linux","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/ssh-certificate-auth-linux\/","title":{"rendered":"SSH \u8bc1\u4e66\u8ba4\u8bc1\u5b9e\u6218\uff1a\u591a\u53f0 Linux \u670d\u52a1\u5668\u7684\u77ed\u671f\u8eab\u4efd\u7ba1\u7406"},"content":{"rendered":"

\"SSH<\/p>\n

\u5982\u679c\u4f60\u7ef4\u62a4 3 \u53f0\u4ee5\u5185 Linux \u670d\u52a1\u5668\uff0c\u628a\u7ba1\u7406\u5458\u7684 SSH\uff08\u5b89\u5168\u5916\u58f3\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u516c\u94a5\u9010\u53f0\u5199\u5165 ~\/.ssh\/authorized_keys<\/code> \u901a\u5e38\u8fd8\u80fd\u63a5\u53d7\uff1b\u4f46\u5f53\u670d\u52a1\u5668\u6570\u91cf\u589e\u957f\u5230 10 \u53f0\u300130 \u53f0\u751a\u81f3\u66f4\u591a\uff0c\u4eba\u5458\u5165\u804c\u3001\u79bb\u804c\u3001\u4e34\u65f6\u6388\u6743\u548c\u5bc6\u94a5\u8f6e\u6362\u5c31\u4f1a\u53d8\u6210\u91cd\u590d\u4e14\u5bb9\u6613\u51fa\u9519\u7684\u5de5\u4f5c\u3002\u672c\u6587\u662f\u4e00\u4efd SSH \u8bc1\u4e66\u8ba4\u8bc1\u5b9e\u6218\u6307\u5357\uff0c\u91cd\u70b9\u89e3\u51b3\u201c\u957f\u671f\u516c\u94a5\u6563\u843d\u5728\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u4e0d\u597d\u7ba1\u7406\u201d\u7684\u95ee\u9898\uff0c\u5e2e\u52a9\u4f60\u7528\u77ed\u671f\u8bc1\u4e66\u66ff\u4ee3\u5927\u89c4\u6a21\u624b\u5de5\u5206\u53d1\u516c\u94a5\u3002<\/p>\n

SSH \u8bc1\u4e66\u8ba4\u8bc1\u7684\u6838\u5fc3\u601d\u8def\u5e76\u4e0d\u590d\u6742\uff1a\u670d\u52a1\u5668\u4e0d\u518d\u4fe1\u4efb\u6bcf\u4e00\u4e2a\u7528\u6237\u516c\u94a5\uff0c\u800c\u662f\u4fe1\u4efb\u4e00\u4e2a\u53d7\u63a7\u7684 CA\uff08\u8bc1\u4e66\u7b7e\u53d1\u673a\u6784\uff09\u516c\u94a5\uff1b\u7528\u6237\u6bcf\u6b21\u767b\u5f55\u65f6\u643a\u5e26\u81ea\u5df1\u7684\u516c\u94a5\u548c\u4e00\u5f20\u7531 CA \u7b7e\u53d1\u7684\u77ed\u671f\u8bc1\u4e66\u3002\u8bc1\u4e66\u53ef\u4ee5\u5199\u660e\u7528\u6237\u540d\u3001\u53ef\u767b\u5f55\u8d26\u53f7\u3001\u6709\u6548\u671f\u548c\u5e8f\u5217\u53f7\uff0c\u8fc7\u671f\u540e\u81ea\u52a8\u5931\u6548\uff0c\u4e0d\u9700\u8981\u4f60\u518d\u5230\u6bcf\u53f0\u670d\u52a1\u5668\u4e0a\u5220\u9664\u540c\u4e00\u628a\u516c\u94a5\u3002<\/p>\n

\u8fd9\u7bc7\u6587\u7ae0\u4f1a\u6309\u7167\u201c\u9002\u7528\u573a\u666f\u2192CA \u89c4\u5212\u2192\u670d\u52a1\u7aef\u914d\u7f6e\u2192\u5ba2\u6237\u7aef\u7b7e\u53d1\u2192\u56de\u6536\u4e0e\u5ba1\u8ba1\u201d\u7684\u987a\u5e8f\u5c55\u5f00\u3002\u793a\u4f8b\u547d\u4ee4\u57fa\u4e8e OpenSSH \u5e38\u89c1\u7528\u6cd5\uff0c\u9002\u5408\u4e2d\u5c0f\u56e2\u961f\u3001\u5916\u8d38\u7ad9\u70b9\u8fd0\u7ef4\u3001\u5f00\u53d1\u6d4b\u8bd5\u73af\u5883\u548c\u591a\u53f0 VPS<\/a>\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u6216\u72ec\u7acb\u670d\u52a1\u5668<\/a>\uff08\u72ec\u4eab\u7269\u7406\u670d\u52a1\u5668<\/a>\uff09\u573a\u666f\u53c2\u8003\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u957f\u671f\u516c\u94a5\u7ba1\u7406\u4f1a\u5931\u63a7<\/h2>\n

\u4f20\u7edf SSH\uff08\u5b89\u5168\u5916\u58f3\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u516c\u94a5\u8ba4\u8bc1\u4f9d\u8d56 authorized_keys<\/code> \u6587\u4ef6\u3002\u6bcf\u65b0\u589e\u4e00\u4e2a\u7ba1\u7406\u5458\uff0c\u4f60\u9700\u8981\u628a\u4ed6\u7684\u516c\u94a5\u8ffd\u52a0\u5230\u6bcf\u53f0\u76ee\u6807\u670d\u52a1\u5668\uff1b\u6bcf\u64a4\u9500\u4e00\u4e2a\u4eba\uff0c\u53c8\u8981\u786e\u8ba4\u6240\u6709\u670d\u52a1\u5668\u90fd\u5220\u9664\u4e86\u5bf9\u5e94\u516c\u94a5\u3002\u5355\u53f0\u670d\u52a1\u5668\u95ee\u9898\u4e0d\u5927\uff0c\u771f\u6b63\u7684\u98ce\u9669\u6765\u81ea\u89c4\u6a21\u548c\u65f6\u95f4\u3002<\/p>\n

\u4e3e\u4e2a\u5e38\u89c1\u4f8b\u5b50\uff1a\u4e00\u4e2a\u56e2\u961f\u6709 8 \u540d\u7814\u53d1\u548c\u8fd0\u7ef4\u6210\u5458\uff0c\u7ef4\u62a4 20 \u53f0 Linux \u670d\u52a1\u5668\u3002\u5982\u679c\u6bcf\u4e2a\u4eba\u90fd\u6709 1 \u628a\u767b\u5f55\u516c\u94a5\uff0c\u7406\u8bba\u4e0a\u5c31\u6709 160 \u4e2a\u201c\u7528\u6237\u516c\u94a5\u4e0e\u670d\u52a1\u5668\u201d\u7684\u5173\u7cfb\u9700\u8981\u4fdd\u6301\u6b63\u786e\u3002\u53ea\u8981\u5176\u4e2d 1 \u53f0\u670d\u52a1\u5668\u6f0f\u5220\u79bb\u804c\u4eba\u5458\u7684\u516c\u94a5\uff0c\u8fd9\u4e2a\u6388\u6743\u5c31\u4f1a\u7ee7\u7eed\u5b58\u5728\uff0c\u800c\u4e14\u4e0d\u4e00\u5b9a\u4f1a\u88ab\u65e5\u5e38\u5de1\u68c0\u53d1\u73b0\u3002<\/p>\n

\u66f4\u9ebb\u70e6\u7684\u662f\u4e34\u65f6\u6388\u6743\u3002\u6bd4\u5982\u4f60\u53ea\u5e0c\u671b\u67d0\u4f4d\u5de5\u7a0b\u5e08\u5728 2 \u5c0f\u65f6\u5185\u6392\u67e5\u7ebf\u4e0a\u65e5\u5fd7\uff0c\u4f20\u7edf\u505a\u6cd5\u5f80\u5f80\u662f\u201c\u5148\u52a0\u516c\u94a5\uff0c\u6392\u67e5\u5b8c\u518d\u5220\u201d\u3002\u5982\u679c\u7b2c\u4e8c\u6b65\u88ab\u9057\u6f0f\uff0c\u4e34\u65f6\u6743\u9650\u5c31\u53d8\u6210\u957f\u671f\u6743\u9650\u3002SSH \u8bc1\u4e66\u8ba4\u8bc1\u628a\u8fd9\u4e2a\u95ee\u9898\u524d\u79fb\u5230\u7b7e\u53d1\u9636\u6bb5\uff1a\u8bc1\u4e66\u7b7e\u53d1\u65f6\u5c31\u5199\u5165\u6709\u6548\u671f\uff0c\u4f8b\u5982 +2h<\/code>\uff0c\u5230\u671f\u540e\u5373\u4f7f\u670d\u52a1\u5668\u4e0a\u6ca1\u6709\u4efb\u4f55\u5220\u9664\u52a8\u4f5c\uff0c\u767b\u5f55\u4e5f\u4f1a\u88ab\u62d2\u7edd\u3002<\/p>\n

\u4ece\u8fd0\u7ef4\u89d2\u5ea6\u770b\uff0cSSH \u8bc1\u4e66\u8ba4\u8bc1\u4e0d\u662f\u66ff\u4ee3\u6240\u6709\u5b89\u5168\u63aa\u65bd\uff0c\u800c\u662f\u628a\u201c\u4fe1\u4efb\u8c01\u201d\u4ece\u6bcf\u53f0\u670d\u52a1\u5668\u7684\u9759\u6001\u6587\u4ef6\u6536\u675f\u5230\u53ef\u5ba1\u8ba1\u7684\u7b7e\u53d1\u6d41\u7a0b\u3002\u89c4\u5212\u670d\u52a1\u5668\u767b\u5f55\u57fa\u7ebf\u65f6\uff0c\u53ef\u4ee5\u53c2\u8003\u56fd\u5916\u670d\u52a1\u5668\u7684\u6570\u636e\u4e0e\u4e1a\u52a1\u5b89\u5168\u52a0\u56fa\u601d\u8def<\/a>\uff0c\u628a\u8bc1\u4e66\u8ba4\u8bc1\u7eb3\u5165\u6574\u4f53\u8bbf\u95ee\u63a7\u5236\u4e00\u8d77\u8bbe\u8ba1\u3002<\/p>\n

\u5148\u8bbe\u8ba1 CA\uff1a\u4e0d\u8981\u628a\u7b7e\u53d1\u94a5\u5319\u653e\u5728\u666e\u901a\u8df3\u677f\u673a\u4e0a<\/h2>\n

\u5728 SSH \u8bc1\u4e66\u8ba4\u8bc1\u4e2d\uff0cCA \u79c1\u94a5\u662f\u6574\u5957\u673a\u5236\u7684\u6838\u5fc3\u3002\u5982\u679c CA \u79c1\u94a5\u6cc4\u9732\uff0c\u653b\u51fb\u8005\u5c31\u53ef\u80fd\u7b7e\u53d1\u770b\u4f3c\u5408\u6cd5\u7684\u767b\u5f55\u8bc1\u4e66\u3002\u56e0\u6b64\u7b2c\u4e00\u6b65\u4e0d\u662f\u5199\u914d\u7f6e\uff0c\u800c\u662f\u786e\u5b9a CA \u5bc6\u94a5\u5982\u4f55\u751f\u6210\u3001\u5b58\u653e\u548c\u4f7f\u7528\u3002<\/p>\n

\u5efa\u8bae\u81f3\u5c11\u533a\u5206\u4e24\u7c7b CA\uff1a\u7528\u6237\u8bc1\u4e66 CA \u548c\u4e3b\u673a\u8bc1\u4e66 CA\u3002\u7528\u6237\u8bc1\u4e66 CA \u7528\u6765\u7ed9\u7ba1\u7406\u5458\u3001\u5f00\u53d1\u8005\u6216\u81ea\u52a8\u5316\u4efb\u52a1\u7b7e\u53d1\u767b\u5f55\u8bc1\u4e66\uff1b\u4e3b\u673a\u8bc1\u4e66 CA \u7528\u6765\u8bc1\u660e\u670d\u52a1\u5668\u8eab\u4efd\uff0c\u51cf\u5c11\u9996\u6b21\u8fde\u63a5\u65f6\u4eba\u5de5\u786e\u8ba4\u6307\u7eb9\u7684\u98ce\u9669\u3002\u672c\u6587\u91cd\u70b9\u8bb2\u7528\u6237\u8bc1\u4e66\u8ba4\u8bc1\uff0c\u4e3b\u673a\u8bc1\u4e66\u53ef\u4ee5\u5728\u540e\u7eed\u7a33\u5b9a\u540e\u518d\u9010\u6b65\u63a5\u5165\u3002<\/p>\n

\u751f\u6210\u7528\u6237 CA \u5bc6\u94a5\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\uff1a<\/p>\n

mkdir -p \/root\/ssh-ca\nchmod 700 \/root\/ssh-ca\nssh-keygen -t ed25519 -f \/root\/ssh-ca\/user_ca -C \"user-ca-2026\"\n<\/code><\/pre>\n
\u8fd9\u91cc\u4f7f\u7528 ed25519<\/code> \u662f\u56e0\u4e3a\u5b83\u5728\u73b0\u4ee3 OpenSSH \u73af\u5883\u4e2d\u5e7f\u6cdb\u652f\u6301\uff0c\u5bc6\u94a5\u77ed\u3001\u6027\u80fd\u597d\uff0c\u4e5f\u4fbf\u4e8e\u4eba\u5de5\u6838\u5bf9\u6307\u7eb9\u3002\u751f\u6210\u540e\uff0cuser_ca<\/code> \u662f\u79c1\u94a5\uff0c\u5fc5\u987b\u9650\u5236\u8bbf\u95ee\uff1buser_ca.pub<\/code> \u662f\u516c\u94a5\uff0c\u53ef\u4ee5\u5206\u53d1\u5230\u53d7\u7ba1\u670d\u52a1\u5668\u3002<\/p>\n
\"SSH<\/p>\n
\u670d\u52a1\u7aef\u914d\u7f6e\uff1a\u8ba9\u670d\u52a1\u5668\u4fe1\u4efb CA \u516c\u94a5<\/h2>\n
\u51c6\u5907\u597d CA \u540e\uff0c\u9700\u8981\u628a CA \u516c\u94a5\u90e8\u7f72\u5230\u6bcf\u53f0 Linux \u670d\u52a1\u5668\uff0c\u5e76\u4fee\u6539 SSH\uff08\u5b89\u5168\u5916\u58f3\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u670d\u52a1\u7aef\u914d\u7f6e\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53ea\u505a\u4e00\u6b21\uff0c\u540e\u7eed\u65b0\u589e\u7528\u6237\u4e0d\u518d\u9700\u8981\u9010\u53f0\u8ffd\u52a0\u4e2a\u4eba\u516c\u94a5\u3002<\/p>\n
\u5148\u628a user_ca.pub<\/code> \u653e\u5230\u670d\u52a1\u5668\u56fa\u5b9a\u8def\u5f84\uff0c\u4f8b\u5982\uff1a<\/p>\n
sudo install -m 0644 user_ca.pub \/etc\/ssh\/user_ca.pub\n<\/code><\/pre>\n
\u7136\u540e\u5728 \/etc\/ssh\/sshd_config<\/code> \u4e2d\u52a0\u5165\u6216\u786e\u8ba4\u4e0b\u9762\u7684\u914d\u7f6e\uff1a<\/p>\n
TrustedUserCAKeys \/etc\/ssh\/user_ca.pub\nAuthorizedPrincipalsFile .ssh\/authorized_principals\n<\/code><\/pre>\n
TrustedUserCAKeys<\/code> \u8868\u793a\u8fd9\u53f0\u670d\u52a1\u5668\u4fe1\u4efb\u54ea\u4e2a\u7528\u6237 CA \u516c\u94a5\uff1bAuthorizedPrincipalsFile<\/code> \u7528\u6765\u9650\u5236\u8bc1\u4e66\u91cc\u7684 principal\uff08\u53ef\u7406\u89e3\u4e3a\u8bc1\u4e66\u58f0\u660e\u7684\u767b\u5f55\u8eab\u4efd\uff09\u80fd\u6620\u5c04\u5230\u54ea\u4e9b\u672c\u5730\u8d26\u53f7\u3002\u4e3a\u4e86\u907f\u514d\u201c\u4efb\u4f55\u88ab CA \u7b7e\u8fc7\u7684\u8bc1\u4e66\u90fd\u80fd\u767b\u5f55\u6240\u6709\u8d26\u53f7\u201d\uff0c\u5efa\u8bae\u4e3a\u5173\u952e\u8d26\u53f7\u914d\u7f6e authorized_principals<\/code>\u3002<\/p>\n
\u4f8b\u5982\u4f60\u5e0c\u671b\u67d0\u4e2a\u8bc1\u4e66\u53ea\u80fd\u767b\u5f55 deploy<\/code> \u8d26\u53f7\uff0c\u53ef\u4ee5\u5728\u76ee\u6807\u670d\u52a1\u5668\u4e0a\u521b\u5efa\uff1a<\/p>\n
sudo mkdir -p \/home\/deploy\/.ssh\nsudo sh -c 'echo deploy-prod > \/home\/deploy\/.ssh\/authorized_principals'\nsudo chown -R deploy:deploy \/home\/deploy\/.ssh\nsudo chmod 700 \/home\/deploy\/.ssh\nsudo chmod 600 \/home\/deploy\/.ssh\/authorized_principals\n<\/code><\/pre>\n
\u4fee\u6539\u914d\u7f6e\u540e\u5148\u505a\u8bed\u6cd5\u68c0\u67e5\uff0c\u518d\u91cd\u8f7d\u670d\u52a1\uff1a<\/p>\n
sudo sshd -t\nsudo systemctl reload sshd\n<\/code><\/pre>\n
\u5982\u679c\u4f60\u7684\u7cfb\u7edf\u670d\u52a1\u540d\u662f ssh<\/code> \u800c\u4e0d\u662f sshd<\/code>\uff0c\u53ef\u4ee5\u6267\u884c systemctl status ssh<\/code> \u786e\u8ba4\u3002<\/p>\n
\u5ba2\u6237\u7aef\u7b7e\u53d1\uff1a\u7528\u77ed\u671f\u8bc1\u4e66\u66ff\u4ee3\u957f\u671f\u516c\u94a5<\/h2>\n
\u670d\u52a1\u7aef\u4fe1\u4efb CA \u540e\uff0c\u7528\u6237\u4ecd\u7136\u4fdd\u7559\u81ea\u5df1\u7684\u672c\u5730 SSH\uff08\u5b89\u5168\u5916\u58f3\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u5bc6\u94a5\uff0c\u4f8b\u5982 ~\/.ssh\/id_ed25519.pub<\/code>\u3002\u533a\u522b\u5728\u4e8e\uff0c\u8fd9\u628a\u516c\u94a5\u4e0d\u518d\u76f4\u63a5\u5199\u5165\u6240\u6709\u670d\u52a1\u5668\uff0c\u800c\u662f\u4ea4\u7ed9 CA \u7b7e\u53d1\u4e00\u5f20\u77ed\u671f\u8bc1\u4e66\u3002<\/p>\n
\u4e00\u4e2a\u5178\u578b\u7b7e\u53d1\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n
ssh-keygen -s \/root\/ssh-ca\/user_ca   -I johnson-prod-20260815-001   -n deploy-prod   -V +4h   -z 1001   \/home\/johnson\/.ssh\/id_ed25519.pub\n<\/code><\/pre>\n
\u51e0\u4e2a\u53c2\u6570\u9700\u8981\u8ba4\u771f\u7406\u89e3\uff1a-I<\/code> \u662f\u8bc1\u4e66\u8eab\u4efd\u8bf4\u660e\uff0c\u5efa\u8bae\u5305\u542b\u7533\u8bf7\u4eba\u3001\u73af\u5883\u548c\u65e5\u671f\uff1b-n<\/code> \u662f principal\uff0c\u5fc5\u987b\u4e0e\u670d\u52a1\u7aef authorized_principals<\/code> \u4e2d\u5141\u8bb8\u7684\u503c\u5339\u914d\uff1b-V +4h<\/code> \u8868\u793a\u8bc1\u4e66\u4ece\u73b0\u5728\u8d77 4 \u5c0f\u65f6\u5185\u6709\u6548\uff1b-z 1001<\/code> \u662f\u5e8f\u5217\u53f7\uff0c\u4fbf\u4e8e\u540e\u7eed\u5ba1\u8ba1\u6216\u64a4\u9500\u3002\u547d\u4ee4\u6267\u884c\u540e\u4f1a\u751f\u6210 id_ed25519-cert.pub<\/code>\uff0c\u7528\u6237\u767b\u5f55\u65f6 OpenSSH \u901a\u5e38\u4f1a\u81ea\u52a8\u5339\u914d\u540c\u540d\u8bc1\u4e66\u3002<\/p>\n
\u767b\u5f55\u547d\u4ee4\u4ecd\u7136\u5f88\u719f\u6089\uff1a<\/p>\n
ssh -i ~\/.ssh\/id_ed25519 deploy@203.0.113.10\n<\/code><\/pre>\n
\u5982\u679c\u8981\u663e\u5f0f\u6307\u5b9a\u8bc1\u4e66\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n
ssh -i ~\/.ssh\/id_ed25519   -o CertificateFile=~\/.ssh\/id_ed25519-cert.pub   deploy@203.0.113.10\n<\/code><\/pre>\n
\"\u77ed\u671f\u8bc1\u4e66\u767b\u5f55\u670d\u52a1\u5668\u7684\u8ba4\u8bc1\u8fc7\u7a0b\"<\/p>\n
\u8fd9\u91cc\u7684\u5173\u952e\u6536\u76ca\u662f\u201c\u6743\u9650\u5929\u7136\u6709\u622a\u6b62\u65f6\u95f4\u201d\u3002\u4f8b\u5982\u7ebf\u4e0a\u6392\u969c\u7b7e\u53d1 2 \u5c0f\u65f6\uff0c\u7070\u5ea6\u53d1\u5e03\u7b7e\u53d1 4 \u5c0f\u65f6\uff0c\u65e5\u5e38\u503c\u73ed\u7b7e\u53d1 8 \u5c0f\u65f6\u3002\u5230\u4e86\u6709\u6548\u671f\uff0c\u8bc1\u4e66\u81ea\u52a8\u5931\u6548\uff0c\u670d\u52a1\u5668\u65e0\u9700\u611f\u77e5\u5de5\u5355\u662f\u5426\u5173\u95ed\u3002\u76f8\u6bd4\u628a\u540c\u4e00\u628a\u957f\u671f\u516c\u94a5\u5206\u53d1\u5230 20 \u53f0\u670d\u52a1\u5668\uff0c\u8fd9\u79cd\u65b9\u5f0f\u66f4\u9002\u5408\u6743\u9650\u9891\u7e41\u53d8\u5316\u7684\u56e2\u961f\u3002<\/p>\n
\u56de\u6536\u4e0e\u9650\u5236\uff1a\u4e0d\u8981\u53ea\u4f9d\u8d56\u8fc7\u671f\u65f6\u95f4<\/h2>\n
\u77ed\u671f\u6709\u6548\u671f\u53ef\u4ee5\u51cf\u5c11\u5fd8\u8bb0\u56de\u6536\u7684\u98ce\u9669\uff0c\u4f46\u4e0d\u80fd\u8986\u76d6\u6240\u6709\u60c5\u51b5\u3002\u6bd4\u5982\u8bc1\u4e66\u521a\u7b7e\u53d1 4 \u5c0f\u65f6\uff0c\u7528\u6237\u8bbe\u5907\u5728 10 \u5206\u949f\u540e\u4e22\u5931\uff1b\u6216\u8005\u67d0\u4e2a\u8d26\u53f7\u88ab\u8bef\u7b7e\u4e86\u8fc7\u5927\u7684 principal\u3002\u6b64\u65f6\u4f60\u9700\u8981\u914d\u5408\u64a4\u9500\u5217\u8868\u548c\u670d\u52a1\u7aef\u9650\u5236\u3002<\/p>\n
OpenSSH \u652f\u6301\u901a\u8fc7 RevokedKeys<\/code> \u914d\u7f6e\u64a4\u9500\u8bc1\u4e66\u6216\u516c\u94a5\u3002\u4f60\u53ef\u4ee5\u628a\u9700\u8981\u7981\u7528\u7684\u8bc1\u4e66 key ID\u3001\u5e8f\u5217\u53f7\u6216\u516c\u94a5\u52a0\u5165\u64a4\u9500\u6587\u4ef6\uff0c\u518d\u5728 sshd_config<\/code> \u4e2d\u914d\u7f6e\uff1a<\/p>\n
RevokedKeys \/etc\/ssh\/revoked_keys\n<\/code><\/pre>\n
\u66f4\u65b0\u64a4\u9500\u6587\u4ef6\u540e\u540c\u6837\u5148\u6267\u884c sshd -t<\/code>\uff0c\u518d\u91cd\u8f7d SSH\uff08\u5b89\u5168\u5916\u58f3\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u670d\u52a1\u3002\u64a4\u9500\u5217\u8868\u9002\u5408\u5904\u7406\u201c\u8fd8\u6ca1\u8fc7\u671f\u4f46\u5fc5\u987b\u7acb\u5373\u505c\u7528\u201d\u7684\u8bc1\u4e66\u3002\u4e3a\u4e86\u8ba9\u64a4\u9500\u6709\u6548\uff0c\u7b7e\u53d1\u65f6\u5fc5\u987b\u575a\u6301\u4f7f\u7528\u552f\u4e00\u5e8f\u5217\u53f7\u548c\u53ef\u8bfb\u7684 key ID\uff0c\u5426\u5219\u4e8b\u540e\u5f88\u96be\u786e\u8ba4\u8be5\u64a4\u9500\u54ea\u4e00\u5f20\u8bc1\u4e66\u3002<\/p>\n
\u5bf9\u5916\u8d38\u7ad9\u70b9\u6216\u4e1a\u52a1\u7f51\u7ad9\u6765\u8bf4\uff0c\u767b\u5f55\u5b89\u5168\u53ea\u662f\u6574\u4f53\u7a33\u5b9a\u6027\u7684\u4e00\u90e8\u5206\u3002\u4f60\u8fd8\u9700\u8981\u914d\u5408\u5907\u4efd\u3001\u76d1\u63a7\u548c\u8bbf\u95ee\u63a7\u5236\u4e00\u8d77\u505a\uff0c\u76f8\u5173\u57fa\u7840\u8bbe\u65bd\u9009\u62e9\u53ef\u4ee5\u53c2\u8003 Hostease \u7684VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u65b9\u6848<\/a>\u3001\u72ec\u7acb\u670d\u52a1\u5668\uff08\u72ec\u4eab\u7269\u7406\u670d\u52a1\u5668\uff09\u65b9\u6848<\/a>\uff0c\u4ee5\u53caWordPress \u76f8\u5173\u8fd0\u7ef4\u5185\u5bb9<\/a>\uff0c\u6839\u636e\u8bbf\u95ee\u91cf\u3001\u6743\u9650\u9694\u79bb\u548c\u8fd0\u7ef4\u80fd\u529b\u51b3\u5b9a\u627f\u8f7d\u65b9\u5f0f\u3002<\/p>\n
\u843d\u5730\u524d\u7684\u68c0\u67e5\u6e05\u5355<\/h2>\n
SSH \u8bc1\u4e66\u8ba4\u8bc1\u6700\u6015\u201c\u4e00\u6b21\u6027\u5168\u91cf\u5207\u6362\u201d\u3002\u66f4\u7a33\u59a5\u7684\u65b9\u5f0f\u662f\u5148\u9009 2 \u53f0\u975e\u6838\u5fc3\u670d\u52a1\u5668\u505a\u8bd5\u70b9\uff0c\u786e\u8ba4\u7b7e\u53d1\u3001\u767b\u5f55\u3001\u5ba1\u8ba1\u548c\u56de\u6eda\u6d41\u7a0b\u90fd\u987a\u7545\uff0c\u518d\u9010\u6b65\u8986\u76d6\u751f\u4ea7\u670d\u52a1\u5668\u3002\u4e0b\u9762\u8fd9\u7ec4\u68c0\u67e5\u53ef\u4ee5\u4f5c\u4e3a\u4e0a\u7ebf\u524d\u7684\u6700\u5c0f\u6807\u51c6\uff1a<\/p>\n
    \n
  • CA \u79c1\u94a5\u53ea\u4fdd\u5b58\u5728 1 \u4e2a\u53d7\u63a7\u4f4d\u7f6e\uff0c\u5e76\u8bbe\u7f6e chmod 600<\/code> \u6216\u66f4\u4e25\u683c\u7684\u8bbf\u95ee\u63a7\u5236\u3002<\/li>\n
  • \u6bcf\u5f20\u7528\u6237\u8bc1\u4e66\u6709\u6548\u671f\u6709\u660e\u786e\u4e0a\u9650\uff0c\u751f\u4ea7\u4e34\u65f6\u6388\u6743\u5efa\u8bae\u4ece +2h<\/code> \u6216 +4h<\/code> \u5f00\u59cb\u3002<\/li>\n
  • authorized_principals<\/code> \u5df2\u6309\u8d26\u53f7\u62c6\u5206\uff0c\u907f\u514d\u4e00\u5f20\u8bc1\u4e66\u767b\u5f55\u6240\u6709\u672c\u5730\u7528\u6237\u3002<\/li>\n
  • \u7b7e\u53d1\u65e5\u5fd7\u81f3\u5c11\u8bb0\u5f55\u7533\u8bf7\u4eba\u3001principal\u3001\u5e8f\u5217\u53f7\u3001\u6709\u6548\u671f\u548c\u5ba1\u6279\u6765\u6e90\u3002<\/li>\n
  • \u8bd5\u70b9\u670d\u52a1\u5668\u5df2\u9a8c\u8bc1 sshd -t<\/code>\u3001\u65b0\u4f1a\u8bdd\u767b\u5f55\u3001\u8fc7\u671f\u8bc1\u4e66\u62d2\u7edd\u548c\u64a4\u9500\u5217\u8868\u751f\u6548\u3002<\/li>\n<\/ul>\n
    \u6267\u884c\u9a8c\u8bc1\u65f6\uff0c\u4e0d\u8981\u53ea\u6d4b\u8bd5\u201c\u80fd\u4e0d\u80fd\u767b\u5f55\u201d\uff0c\u8fd8\u8981\u6d4b\u8bd5\u201c\u8be5\u62d2\u7edd\u65f6\u662f\u5426\u62d2\u7edd\u201d\u3002\u4f8b\u5982\u7b7e\u53d1\u4e00\u4e2a -V -1h:+1h<\/code> \u7684\u77ed\u8bc1\u4e66\u786e\u8ba4\u6b63\u5e38\u767b\u5f55\uff0c\u518d\u7b7e\u53d1\u4e00\u4e2a\u4e0d\u5339\u914d principal \u7684\u8bc1\u4e66\u786e\u8ba4\u5931\u8d25\u3002\u4f60\u4e5f\u53ef\u4ee5\u5728\u6d4b\u8bd5\u73af\u5883\u91cc\u628a\u8bc1\u4e66\u6709\u6548\u671f\u8bbe\u4e3a +2m<\/code>\uff0c\u7b49\u5f85 2 \u5206\u949f\u540e\u518d\u6b21\u767b\u5f55\uff0c\u89c2\u5bdf\u670d\u52a1\u5668\u662f\u5426\u62d2\u7edd\u8fc7\u671f\u8bc1\u4e66\u3002<\/p>\n
    \"\u8bc1\u4e66\u8ba4\u8bc1\u4e0a\u7ebf\u524d\u7684\u5b89\u5168\u68c0\u67e5\u9879\"<\/p>\n
    \u603b\u7ed3\uff1a\u628a\u767b\u5f55\u6743\u9650\u4ece\u201c\u957f\u671f\u6563\u843d\u201d\u6539\u6210\u201c\u77ed\u671f\u53ef\u5ba1\u8ba1\u201d<\/h2>\n
    SSH \u8bc1\u4e66\u8ba4\u8bc1\u7684\u4ef7\u503c\uff0c\u4e0d\u5728\u4e8e\u547d\u4ee4\u672c\u8eab\u591a\u590d\u6742\uff0c\u800c\u5728\u4e8e\u5b83\u6539\u53d8\u4e86\u6743\u9650\u7ba1\u7406\u6a21\u578b\u3002\u957f\u671f\u516c\u94a5\u9002\u5408\u5c0f\u89c4\u6a21\u3001\u4f4e\u53d8\u5316\u73af\u5883\uff1b\u5f53\u670d\u52a1\u5668\u548c\u4eba\u5458\u6570\u91cf\u4e0a\u6765\u540e\uff0c\u77ed\u671f\u8bc1\u4e66\u80fd\u8ba9\u6388\u6743\u6709\u6709\u6548\u671f\u3001\u6709 principal \u8fb9\u754c\u3001\u6709\u5e8f\u5217\u53f7\u8bb0\u5f55\uff0c\u4e5f\u66f4\u5bb9\u6613\u914d\u5408\u64a4\u9500\u548c\u5ba1\u8ba1\u3002<\/p>\n
    \u5982\u679c\u4f60\u9700\u8981\u7ba1\u7406\u591a\u53f0 Linux \u670d\u52a1\u5668\uff0c\u5efa\u8bae\u4ece 2 \u53f0\u4f4e\u98ce\u9669\u670d\u52a1\u5668\u5f00\u59cb\u8bd5\u70b9\uff1a\u751f\u6210\u7528\u6237 CA\u3001\u914d\u7f6e TrustedUserCAKeys<\/code>\u3001\u4e3a\u4e00\u4e2a\u666e\u901a\u8d26\u53f7\u5199\u5165 authorized_principals<\/code>\u3001\u7b7e\u53d1 2 \u5c0f\u65f6\u8bc1\u4e66\u5e76\u9a8c\u8bc1\u8fc7\u671f\u62d2\u7edd\u3002\u786e\u8ba4\u6d41\u7a0b\u7a33\u5b9a\u540e\uff0c\u518d\u628a\u7b7e\u53d1\u5ba1\u6279\u3001\u65e5\u5fd7\u7559\u5b58\u548c\u64a4\u9500\u5217\u8868\u7eb3\u5165\u65e5\u5e38\u8fd0\u7ef4\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u5373\u4f7f\u6682\u65f6\u4e0d\u5f15\u5165\u590d\u6742\u5e73\u53f0\uff0c\u4e5f\u80fd\u5148\u628a\u6700\u5bb9\u6613\u9057\u6f0f\u7684\u957f\u671f\u516c\u94a5\u95ee\u9898\u6536\u675f\u8d77\u6765\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u672c\u6587\u4ecb\u7ecd SSH \u8bc1\u4e66\u8ba4\u8bc1\u7684\u9002\u7528\u573a\u666f\u3001CA \u5bc6\u94a5\u89c4\u5212\u3001\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u914d\u7f6e\u3001\u7b7e\u53d1\u547d\u4ee4\u3001\u56de\u6536\u7b56\u7565\u548c\u4e0a\u7ebf\u68c0\u67e5\uff0c\u5e2e\u52a9\u591a\u53f0 Linux \u670d\u52a1\u5668\u51cf\u5c11\u957f\u671f\u516c\u94a5\u7ba1\u7406\u6210\u672c\u3002<\/p>\n","protected":false},"author":2,"featured_media":33389,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[909,373,5155,5154],"class_list":["post-33393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-linux","tag-ssh","tag-5155","tag-5154"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/09\/ssh-certificate-auth-linux-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=33393"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33393\/revisions"}],"predecessor-version":[{"id":33506,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33393\/revisions\/33506"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/33389"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=33393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=33393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=33393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}