{"id":34169,"date":"2026-07-13T15:03:32","date_gmt":"2026-07-13T07:03:32","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/how-to-protect-your-ssh-port-from-scanning\/"},"modified":"2026-07-13T15:13:25","modified_gmt":"2026-07-13T07:13:25","slug":"how-to-protect-your-ssh-port-from-scanning","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/how-to-protect-your-ssh-port-from-scanning\/","title":{"rendered":"\u5982\u4f55\u4fdd\u8b77SSH\u9023\u63a5\u57e0\u514d\u53d7\u6383\u63cf"},"content":{"rendered":"\n<p>\u8981\u9632\u7bc4<a href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/what-to-do-when-the-server-cannot-connect-to-ssh\/\" target=\"_blank\">SSH\u9023\u63a5\u57e0<\/a>\u6383\u63cf\u8207\u653b\u64ca\uff0c\u9700\u8981\u5efa\u69cb\u5b8c\u5584\u7684\u9632\u8b77\u9ad4\u7cfb\u3002\u9996\u5148\u53ef\u5c07SSH\u9023\u63a5\u57e0\u8b8a\u66f4\u70ba\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u7de8\u865f\uff0c\u900f\u904e\u9632\u706b\u7246\u963b\u64cb\u975e\u5fc5\u8981\u5b58\u53d6\uff0c\u50c5\u5141\u8a31\u53d7\u4fe1\u4efb\u7684IP\u4f4d\u5740\u9023\u7dda\uff0c\u70ba\u670d\u52d9\u8a2d\u5b9a\u91d1\u9470\u8a8d\u8b49\uff0c\u505c\u7528root\u5e33\u865f\u767b\u5165\uff0c\u4e26\u958b\u555f\u96d9\u56e0\u7d20\u9a57\u8b49\u5f37\u5316\u9632\u8b77\u3002\u900f\u904e\u4ee5\u4e0a\u63aa\u65bd\uff0c\u53ef\u6709\u6548\u63d0\u5347\u5b89\u5168\u6027\u3001\u964d\u4f4e\u5b89\u5168\u98a8\u96aa\u3002<\/p>\n<h2>\u9632\u7bc4SSH\u9023\u63a5\u57e0\u6383\u63cf<\/h2>\n<p>\u900f\u904e\u63d0\u5347SSH\u670d\u52d9\u7684\u96b1\u853d\u6027\u8207\u5b58\u53d6\u9580\u6abb\uff0c\u53ef\u964d\u4f4e\u9023\u63a5\u57e0\u6383\u63cf\u5e36\u4f86\u7684\u98a8\u96aa\u3002\u653b\u64ca\u8005\u901a\u5e38\u4f7f\u7528\u81ea\u52d5\u5316\u5de5\u5177\u6383\u63cf\u7db2\u8def\u4e2d\u7684\u958b\u653e\u9023\u63a5\u57e0\uff0c\u82e5\u63a1\u53d6\u63aa\u65bd\u96b1\u85cf\u6216\u4fdd\u8b77\u9023\u63a5\u57e0\uff0c\u5c07\u5927\u5e45\u63d0\u5347\u9019\u985e\u5de5\u5177\u767c\u73fe<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/tokyo\/\" target=\"_blank\">\u4f3a\u670d\u5668<\/a>\u7684\u96e3\u5ea6\u3002\u4ee5\u4e0b\u662f\u4e09\u7a2e\u53ef\u7acb\u5373\u5c0e\u5165\u7684\u6709\u6548\u65b9\u6848\u3002<\/p>\n<h3>\u8b8a\u66f4SSH\u9023\u63a5\u57e0<\/h3>\n<p>\u7d55\u5927\u591a\u6578\u653b\u64ca\u8005\u90fd\u6703\u91dd\u5c0d22\u9023\u63a5\u57e0\u63a2\u6e2cSSH\u670d\u52d9\uff0c\u5c07\u670d\u52d9\u9077\u79fb\u81f3\u5176\u4ed6\u9023\u63a5\u57e0\u53ef\u898f\u907f\u5927\u91cf\u81ea\u52d5\u5316\u6383\u63cf\u3002\u9019\u9805\u7c21\u55ae\u7684\u8b8a\u66f4\u96d6\u7121\u6cd5\u963b\u64cb\u91dd\u5c0d\u6027\u7684\u5b9a\u5411\u653b\u64ca\uff0c\u4f46\u80fd\u963b\u64cb\u7d55\u5927\u591a\u6578\u57fa\u790e\u9023\u63a5\u57e0\u6383\u63cf\u5617\u8a66\u3002<\/p>\n<p><strong>\u9023\u63a5\u57e0\u8b8a\u66f4\u6b65\u9a5f\uff1a<\/strong><\/p>\n<ol>\n<li>\n<p>\u958b\u555fSSH\u8a2d\u5b9a\u6a94\u3002 <\/p>\n<pre><code>sudo nano \/etc\/ssh\/sshd_config<\/code><\/pre>\n<\/li>\n<li>\n<p>\u627e\u5230 <code>Port 22<\/code> \u8a72\u884c\uff0c\u5c07 <code>22<\/code> \u8b8a\u66f4\u70ba 1024\u201365535 \u4e4b\u9593\u7684\u5176\u4ed6\u9023\u63a5\u57e0\u7de8\u865f\u3002<\/p>\n<\/li>\n<li>\n<p>\u5132\u5b58\u6a94\u6848\u4e26\u96e2\u958b\u3002<\/p>\n<\/li>\n<li>\n<p>\u91cd\u65b0\u555f\u52d5SSH\u670d\u52d9\u3002 <\/p>\n<pre><code>sudo systemctl restart sshd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u66f4\u65b0\u9632\u706b\u7246\u898f\u5247\uff0c\u958b\u653e\u65b0\u9023\u63a5\u57e0\u7684\u6d41\u91cf\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u65b0\u9023\u63a5\u57e0\u9023\u7dda\u81f3\u4f3a\u670d\u5668\u3002 <\/p>\n<pre><code>ssh -p [new_port] user@your_server_ip<\/code><\/pre>\n<\/li>\n<\/ol>\n<p>\u8b8a\u66f4\u9023\u63a5\u57e0\u4e26\u7121\u6cd5\u8b93SSH\u5b8c\u5168\u96b1\u8eab\uff0c\u4f46\u8db3\u4ee5\u5354\u52a9\u60a8\u898f\u907f\u7d55\u5927\u591a\u6578\u81ea\u52d5\u5316\u9023\u63a5\u57e0\u6383\u63cf\u3002<\/p>\n<h3>\u4f7f\u7528\u9023\u63a5\u57e0\u6572\u9580\u6a5f\u5236<\/h3>\n<p>\u9023\u63a5\u57e0\u6572\u9580\uff08Port Knocking\uff09\u53ef\u70ba\u670d\u52d9\u984d\u5916\u589e\u52a0\u4e00\u5c64\u9632\u8b77\u3002\u9810\u8a2d\u72c0\u614b\u4e0b\u9023\u63a5\u57e0\u4fdd\u6301\u95dc\u9589\uff0c\u53ea\u6709\u7576\u60a8\u6309\u7167\u7279\u5b9a\u9806\u5e8f\u5c0d\u4e00\u7d44\u9023\u63a5\u57e0\u767c\u8d77\u9023\u7dda\u5617\u8a66\u5f8c\uff0c\u4f3a\u670d\u5668\u624d\u6703\u70ba\u60a8\u958b\u653eSSH\u9023\u63a5\u57e0\u3002<\/p>\n<ul>\n<li>\n<p>\u9023\u63a5\u57e0\u6572\u9580\u8981\u6c42\u60a8\u4f9d\u7167\u6307\u5b9a\u9806\u5e8f\uff0c\u9010\u4e00\u5617\u8a66\u9023\u7dda\u4e00\u7cfb\u5217\u8655\u65bc\u95dc\u9589\u72c0\u614b\u7684\u9023\u63a5\u57e0\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u5b8c\u6210\u6b63\u78ba\u7684\u6572\u9580\u5e8f\u5217\u524d\uff0c\u76ee\u6a19\u9023\u63a5\u57e0\u59cb\u7d42\u4fdd\u6301\u95dc\u9589\u3002<\/p>\n<\/li>\n<li>\n<p>\u4e00\u822c\u6383\u63cf\u4e0b\u653b\u64ca\u8005\u7121\u6cd5\u5075\u6e2c\u5230\u60a8\u7684\u9023\u63a5\u57e0\uff0c\u56e0\u6b64\u7121\u6cd5\u767c\u8d77\u653b\u64ca\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u9023\u63a5\u57e0\u6572\u9580\u8a2d\u5b9a\u6b65\u9a5f\uff1a<\/strong><\/p>\n<ol>\n<li>\n<p>\u5b89\u88dd\u9023\u63a5\u57e0\u6572\u9580\u5de5\u5177\uff0c\u4f8b\u5982 <code>knockd<\/code>\u3002<\/p>\n<pre><code>sudo apt-get install knockd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u7de8\u8f2f knockd \u8a2d\u5b9a\u6a94\uff0c\u9810\u8a2d\u8def\u5f91\u70ba <code>\/etc\/knockd.conf<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u8a2d\u5b9a\u81ea\u8a02\u7684\u79d8\u5bc6\u9023\u63a5\u57e0\u5e8f\u5217\uff0c\u4ee5\u53ca\u89f8\u767c\u9023\u63a5\u57e0\u958b\u653e\u7684\u57f7\u884c\u6307\u4ee4\u3002<\/p>\n<\/li>\n<li>\n<p>\u555f\u52d5 knockd \u670d\u52d9\u3002<\/p>\n<pre><code>sudo systemctl start knockd<\/code><\/pre>\n<\/li>\n<li>\n<p>\u9023\u7dda\u81f3\u4f3a\u670d\u5668\u524d\uff0c\u900f\u904e\u9023\u63a5\u57e0\u6572\u9580\u7528\u6236\u7aef\u767c\u9001\u6572\u9580\u5e8f\u5217\u3002<\/p>\n<\/li>\n<\/ol>\n<h3>\u90e8\u7f72SSH\u871c\u7f50<\/h3>\n<p>\u871c\u7f50\u6703\u507d\u88dd\u6210\u771f\u5be6\u7684SSH\u670d\u52d9\u4f86\u8a98\u6355\u653b\u64ca\u8005\uff0c\u7576\u6709\u4eba\u5617\u8a66\u9023\u7dda\u6642\uff0c\u871c\u7f50\u6703\u8a18\u9304\u5176\u6240\u6709\u64cd\u4f5c\u884c\u70ba\u3002\u60a8\u53ef\u900f\u904e\u9019\u4e9b\u8cc7\u8a0a\u8fa8\u8b58\u653b\u64ca\u884c\u70ba\u3001\u638c\u63e1\u5a01\u8105\u52d5\u5411\u3002<\/p>\n<p><strong>SSH\u871c\u7f50\u90e8\u7f72\u6b65\u9a5f\uff1a<\/strong><\/p>\n<ol>\n<li>\n<p>\u9078\u64c7\u871c\u7f50\u5de5\u5177\uff0c\u4f8b\u5982 <code>Cowrie<\/code> \u6216 <code>Kippo<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u5c07\u871c\u7f50\u5b89\u88dd\u5728\u76ee\u524d\u7684\u4f3a\u670d\u5668\u6216\u7368\u7acb\u8a2d\u5099\u4e0a\u3002<\/p>\n<\/li>\n<li>\n<p>\u8a2d\u5b9a\u871c\u7f50\u76e3\u807d22\u9023\u63a5\u57e0\uff0c\u6216\u5176\u4ed6\u60a8\u60f3\u8981\u76e3\u63a7\u7684\u9023\u63a5\u57e0\u3002<\/p>\n<\/li>\n<li>\n<p>\u5c07\u771f\u5be6\u7684SSH\u670d\u52d9\u9077\u79fb\u81f3\u5176\u4ed6\u9023\u63a5\u57e0\u3002<\/p>\n<\/li>\n<li>\n<p>\u76e3\u63a7\u871c\u7f50\u65e5\u8a8c\uff0c\u6392\u67e5\u53ef\u7591\u6d3b\u52d5\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u900f\u904e\u8b8a\u66f4\u9023\u63a5\u57e0\u3001\u4f7f\u7528\u9023\u63a5\u57e0\u6572\u9580\u8207\u90e8\u7f72\u871c\u7f50\uff0c\u53ef\u5927\u5e45\u63d0\u5347\u653b\u64ca\u8005\u9032\u884c\u9023\u63a5\u57e0\u6383\u63cf\u7684\u96e3\u5ea6\u3002\u9019\u4e9b\u63aa\u65bd\u6709\u52a9\u65bc\u4fdd\u8b77\u4f3a\u670d\u5668\u514d\u53d7\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6\uff0c\u78ba\u4fdd\u670d\u52d9\u5b89\u5168\u904b\u4f5c\u3002<\/p>\n<h2>\u900f\u904e\u9632\u706b\u7246\u9650\u5236SSH\u5b58\u53d6<\/h2>\n<h3>IP\u767d\u540d\u55ae\u958b\u653e\u6a5f\u5236<\/h3>\n<p>\u50c5\u5141\u8a31\u53d7\u4fe1\u4efb\u7684IP\u4f4d\u5740\u9023\u7dda\uff0c\u53ef\u986f\u8457\u63d0\u5347\u5b89\u5168\u5c64\u7d1a\u3002\u5728\u9632\u706b\u7246\u4e2d\u8a2d\u5b9a\u50c5\u63a5\u53d7\u6307\u5b9aIP\u7684\u9023\u7dda\u8acb\u6c42\uff0c\u7b49\u540c\u65bc\u5c0d\u5176\u4ed6\u6240\u6709\u4f4d\u5740\u95dc\u9589\u5b58\u53d6\u5165\u53e3\uff0c\u80fd\u5728\u653b\u64ca\u8005\u5230\u9054\u767b\u5165\u9a57\u8b49\u968e\u6bb5\u524d\u5c31\u963b\u64cb\u7d55\u5927\u591a\u6578\u653b\u64ca\u3002<\/p>\n<p>IP\u767d\u540d\u55ae\u6a5f\u5236\u53ef\u5927\u5e45\u6e1b\u5c11SSH\u66b4\u529b\u7834\u89e3\u5617\u8a66\u3002\u653b\u64ca\u8005\u901a\u5e38\u6703\u6383\u63cf\u5927\u7bc4\u570d\u7684\u4f4d\u5740\u5340\u6bb5\uff0c\u4f46\u53ea\u8981\u5176IP\u4e0d\u5728\u767d\u540d\u55ae\u5167\uff0c\u9632\u706b\u7246\u5c31\u6703\u76f4\u63a5\u963b\u64cb\uff0c\u9032\u800c\u964d\u4f4e\u672a\u7d93\u6388\u6b0a\u5b58\u53d6\u7684\u98a8\u96aa\uff0c\u70ba\u4f3a\u670d\u5668\u63d0\u4f9b\u66f4\u53ef\u9760\u7684\u9632\u8b77\u3002<\/p>\n<p>SSH\u5b58\u53d6IP\u767d\u540d\u55ae\u8a2d\u5b9a\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\n<p>\u78ba\u8a8d\u53d7\u4fe1\u4efb\u7684IP\u4f4d\u5740\uff0c\u4f8b\u5982\u8fa6\u516c\u7db2\u8def\u6216\u5bb6\u7528\u7db2\u8def\u7684\u5c0d\u5916IP\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u9632\u706b\u7246\u4e2d\u65b0\u589e\u898f\u5247\uff0c\u50c5\u5141\u8a31\u9019\u4e9bIP\u7684\u6d41\u91cf\u901a\u904e\u3002<\/p>\n<\/li>\n<li>\n<p>\u6e2c\u8a66\u9023\u7dda\uff0c\u78ba\u8a8d\u4ecd\u53ef\u6b63\u5e38\u5b58\u53d6\u4f3a\u670d\u5668\u3002<\/p>\n<\/li>\n<li>\n<p>\u82e5\u53d7\u4fe1\u4efbIP\u6709\u6240\u8b8a\u52d5\uff0c\u8acb\u53ca\u6642\u66f4\u65b0\u767d\u540d\u55ae\u5217\u8868\u3002<\/p>\n<\/li>\n<\/ol>\n<blockquote>\n<p>\u5c0f\u63d0\u9192\uff1a\u82e5\u60a8\u7d93\u5e38\u51fa\u5dee\u6216\u4f7f\u7528\u52d5\u614bIP\uff0c\u53ef\u8003\u616e\u900f\u904eVPN\u9023\u5165\u56fa\u5b9a\u4f4d\u5740\u5f8c\u518d\u9023\u7dda\u4f3a\u670d\u5668\u3002<\/p>\n<\/blockquote>\n<h3>\u963b\u64cb\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6<\/h3>\n<p>\u5728\u9632\u706b\u7246\u5c64\u7d1a\u963b\u64cb\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6\uff0c\u53ef\u63d0\u4f9b\u9ad8\u5f37\u5ea6\u7684\u5b89\u5168\u9632\u8b77\uff0c\u5728\u653b\u64ca\u8005\u5617\u8a66\u731c\u6e2c\u5bc6\u78bc\u6216\u91d1\u9470\u4e4b\u524d\u5c31\u5c07\u5176\u963b\u64cb\u5728\u5916\u3002\u76ee\u524d\u773e\u591a\u4f01\u696d\u7686\u63a1\u7528\u6b64\u65b9\u6848\u9632\u7bc4\u975e\u9810\u671f\u9023\u7dda\u3002<\/p>\n<p>\u4e0b\u8868\u5c55\u793a\u4e86\u963b\u64cbSSH\u672a\u7d93\u6388\u6b0a\u5b58\u53d6\u5c0d\u5b89\u5168\u6210\u6548\u7684\u63d0\u5347\u6548\u679c\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u65b9\u6848\u8aaa\u660e<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u9632\u8b77\u6210\u6548<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u900f\u904e\u9632\u706b\u7246\u963b\u64cbSSH\u8207RDP\u901a\u8a0a<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u672a\u767c\u751f\u91dd\u5c0d\u4f3a\u670d\u5668\u7ba1\u7406\u9023\u63a5\u57e0\u7684\u672a\u7d93\u6388\u6b0a\u653b\u64ca\u4e8b\u4ef6\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u63a1\u7528Safous\u7279\u6b0a\u9060\u7aef\u5b58\u53d6\u65b9\u6848\u5be6\u73fe\u5b89\u5168\u9023\u5165<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7a69\u5b9a\u904b\u4f5c\u8d85\u904e\u4e00\u5e74\uff0c\u672a\u767c\u751f\u4efb\u4f55\u672a\u7d93\u6388\u6b0a\u7684\u653b\u64ca\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u53ef\u5c07\u9632\u706b\u7246\u8a2d\u5b9a\u70ba\u4e1f\u68c4\u767d\u540d\u55ae\u4ee5\u5916\u7684\u6240\u6709\u6d41\u91cf\uff0c\u6b64\u65b9\u6848\u80fd\u8b93\u4f3a\u670d\u5668\u5c0d\u7d55\u5927\u591a\u6578\u653b\u64ca\u8005\u8fd1\u4e4e\u96b1\u8eab\uff0c\u6709\u6548\u4fdd\u8b77\u8cc7\u6599\u5b89\u5168\u3001\u964d\u4f4e\u8cc7\u6599\u5916\u6d29\u98a8\u96aa\u3002<\/p>\n<h2>\u900f\u904e\u8eab\u5206\u9a57\u8b49\u5f37\u5316SSH\u5b58\u53d6\u5b89\u5168<\/h2>\n<h3>\u505c\u7528root\u5e33\u865f\u767b\u5165<\/h3>\n<p>\u61c9\u505c\u7528root\u5e33\u865f\u767b\u5165\uff0c\u4ee5\u9632\u7bc4\u66b4\u529b\u7834\u89e3\u653b\u64ca\u3002\u653b\u64ca\u8005\u5e38\u5c07root\u5e33\u865f\u505a\u70ba\u653b\u64ca\u76ee\u6a19\uff0c\u56e0\u70ba\u8a72\u5e33\u865f\u64c1\u6709\u4f3a\u670d\u5668\u6700\u9ad8\u63a7\u5236\u6b0a\u9650\u3002\u505c\u7528root\u767b\u5165\u5f8c\uff0c\u653b\u64ca\u8005\u5fc5\u9808\u540c\u6642\u731c\u4e2d\u6709\u6548\u4f7f\u7528\u8005\u540d\u7a31\u8207\u5bc6\u78bc\uff0c\u653b\u64ca\u96e3\u5ea6\u5927\u5e45\u63d0\u5347\u3002<\/p>\n<ul>\n<li>\n<p>\u505c\u7528root\u767b\u5165\u53ef\u907f\u514d\u5e33\u865f\u906d\u5230\u76f4\u63a5\u9396\u5b9a\u653b\u64ca\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u8005\u5fc5\u9808\u4f7f\u7528\u4e00\u822c\u5e33\u865f\u767b\u5165\uff0c\u63d0\u5347\u653b\u64ca\u8907\u96dc\u5ea6\u3002<\/p>\n<\/li>\n<li>\n<p>\u653b\u64ca\u8005\u82e5\u9700\u53d6\u5f97\u9ad8\u6b0a\u9650\uff0c\u5fc5\u9808\u9032\u884c\u6b0a\u9650\u63d0\u5347\u64cd\u4f5c\uff0c\u984d\u5916\u589e\u52a0\u4e00\u5c64\u5b89\u5168\u5c4f\u969c\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u4f3a\u670d\u5668\u4e0a\u5b89\u5168\u505c\u7528root\u767b\u5165\u7684\u64cd\u4f5c\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\n<p>\u57f7\u884c <code>sudo chmod 600 \/etc\/ssh\/sshd_config<\/code>\uff0c\u70baSSH\u8a2d\u5b9a\u6a94\u8a2d\u5b9a\u6b63\u78ba\u7684\u6b0a\u9650\u3002<\/p>\n<\/li>\n<li>\n<p>\u57f7\u884c <code>sudo sed -i \"s\/#PermitRootLogin yes\/PermitRootLogin no\/\" \/etc\/ssh\/sshd_config<\/code> \u66f4\u65b0\u8a2d\u5b9a\u503c\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5b8c\u6210\u8b8a\u66f4\u5f8c\uff0c\u91cd\u65b0\u555f\u52d5SSH\u670d\u52d9\u4f7f\u8a2d\u5b9a\u751f\u6548\u3002<\/p>\n<h3>\u5f37\u5236\u555f\u7528\u91d1\u9470\u8a8d\u8b49<\/h3>\n<p>\u76f8\u8f03\u65bc\u5bc6\u78bc\u8a8d\u8b49\uff0c\u91d1\u9470\u8a8d\u8b49\u80fd\u70baSSH\u63d0\u4f9b\u66f4\u5f37\u7684\u5b89\u5168\u4fdd\u969c\u3002\u60a8\u53ef\u7522\u751f\u4e00\u7d44\u516c\u958b\u91d1\u9470\u8207\u79c1\u5bc6\u91d1\u9470\uff0c\u59a5\u5584\u4fdd\u7ba1\u79c1\u5bc6\u91d1\u9470\u4e26\u5c07\u516c\u958b\u91d1\u9470\u4e0a\u50b3\u81f3\u4f3a\u670d\u5668\u3002\u5373\u4fbf\u653b\u64ca\u8005\u5f97\u77e5\u4f7f\u7528\u8005\u540d\u7a31\uff0c\u6c92\u6709\u79c1\u5bc6\u91d1\u9470\u4e5f\u7121\u6cd5\u767b\u5165\u7cfb\u7d71\u3002<\/p>\n<p>\u5f37\u5236\u555f\u7528\u91d1\u9470\u8a8d\u8b49\u7684\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\n<p>\u4f7f\u7528 <code>ssh-keygen<\/code> \u7522\u751f\u91d1\u9470\u5c0d\u3002<\/p>\n<\/li>\n<li>\n<p>\u900f\u904e <code>ssh-copy-id user@server<\/code> \u5c07\u516c\u958b\u91d1\u9470\u8907\u88fd\u5230\u4f3a\u670d\u5668\u3002<\/p>\n<\/li>\n<li>\n<p>\u7de8\u8f2f <code>\/etc\/ssh\/sshd_config<\/code>\uff0c\u5c07 <code>PasswordAuthentication<\/code> \u8a2d\u5b9a\u503c\u6539\u70ba <code>no<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u91cd\u65b0\u555f\u52d5SSH\u670d\u52d9\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u6240\u6709\u5e33\u865f\u7686\u61c9\u4f7f\u7528\u91d1\u9470\u8a8d\u8b49\uff0c\u6b64\u65b9\u5f0f\u53ef\u963b\u64cb\u7d55\u5927\u591a\u6578\u66b4\u529b\u7834\u89e3\u653b\u64ca\uff0c\u78ba\u4fdd\u5b58\u53d6\u5b89\u5168\u3002<\/p>\n<h3>\u958b\u555f\u96d9\u56e0\u7d20\u9a57\u8b49\uff082FA\uff09<\/h3>\n<p>\u555f\u7528\u96d9\u56e0\u7d20\u9a57\u8b49\uff08\u53c8\u7a31\u591a\u56e0\u7d20\u9a57\u8b49\/MFA\uff09\u53ef\u984d\u5916\u589e\u52a0\u4e00\u5c64\u9632\u8b77\u3002\u958b\u555f2FA\u5f8c\uff0c\u767b\u5165\u5fc5\u9808\u540c\u6642\u9a57\u8b49\u300c\u6240\u77e5\u8cc7\u8a0a\u300d\uff08\u5bc6\u78bc\u6216\u91d1\u9470\uff09\u8207\u300c\u6240\u6301\u7269\u54c1\u300d\uff08\u9a57\u8b49\u78bc\u6216\u9a57\u8b49\u88dd\u7f6e\uff09\u3002<\/p>\n<ul>\n<li>\n<p>2FA\u5728\u5bc6\u78bc\u6216SSH\u91d1\u9470\u4e4b\u5916\uff0c\u589e\u52a0\u4e86\u984d\u5916\u7684\u9a57\u8b49\u74b0\u7bc0\u3002<\/p>\n<\/li>\n<li>\n<p>\u5373\u4fbf\u653b\u64ca\u8005\u53d6\u5f97\u60a8\u7684\u91d1\u9470\uff0c\u4ecd\u9700\u901a\u904e\u7b2c\u4e8c\u91cd\u9a57\u8b49\u624d\u80fd\u767b\u5165\u3002<\/p>\n<\/li>\n<li>\n<p>\u6b64\u65b9\u6848\u53ef\u6709\u6548\u62b5\u79a6\u591a\u7a2e\u6191\u8b49\u7aca\u53d6\u653b\u64ca\u3002<\/p>\n<\/li>\n<\/ul>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u9a57\u8b49\u65b9\u5f0f<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8aaa\u660e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6642\u9593\u578b\u4e00\u6b21\u6027\u5bc6\u78bc\uff08TOTP\uff09<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7522\u751f\u767b\u5165\u9a57\u8b49\u78bc\uff0c\u9700\u642d\u914d\u5bc6\u78bc\u7ba1\u7406\u54e1\u6216\u8eab\u5206\u9a57\u8b49\u5668App\u4f7f\u7528\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>U2F \/ WebAuthn \u786c\u9ad4\u9a57\u8b49\u88dd\u7f6e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u767b\u5165\u6642\u9700\u5be6\u9ad4\u78b0\u89f8\u88dd\u7f6e\u4ee5\u5b8c\u6210\u5b89\u5168\u9a57\u8b49\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u60a8\u53ef\u4f9d\u81ea\u8eab\u9700\u6c42\u9078\u64c72FA\u65b9\u6848\uff0c\u5169\u7a2e\u65b9\u5f0f\u7686\u80fd\u5927\u5e45\u964d\u4f4e\u653b\u64ca\u6210\u529f\u7684\u6a5f\u7387\u3002<\/p>\n<h3>\u7981\u6b62\u7a7a\u767d\u5bc6\u78bc\u767b\u5165<\/h3>\n<p>\u5141\u8a31SSH\u5e33\u865f\u4f7f\u7528\u7a7a\u767d\u5bc6\u78bc\u5b58\u5728\u91cd\u5927\u5b89\u5168\u7591\u616e\uff0c\u6703\u8b93\u7cfb\u7d71\u6975\u6613\u906d\u53d7\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6\u8207\u66b4\u529b\u7834\u89e3\u653b\u64ca\u3002\u5b89\u5168\u898f\u7bc4\u5f37\u70c8\u5efa\u8b70\u505c\u7528\u7a7a\u767d\u5bc6\u78bc\uff0c\u4ee5\u63d0\u5347\u7cfb\u7d71\u5b89\u5168\u6027\u3002<\/p>\n<p>\u7981\u6b62\u7a7a\u767d\u5bc6\u78bc\u7684\u64cd\u4f5c\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528Vim\u958b\u555f <code>\/etc\/ssh\/sshd_config<\/code> \u6a94\u6848\u3002<\/p>\n<\/li>\n<li>\n<p>\u627e\u5230 PermitEmptyPasswords \u8a2d\u5b9a\u503c\u6240\u5728\u884c\u3002<\/p>\n<\/li>\n<li>\n<p>\u53d6\u6d88\u8a72\u884c\u8a3b\u89e3\uff0c\u4e26\u5c07\u503c\u8a2d\u70ba no\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u9019\u9805\u7c21\u55ae\u64cd\u4f5c\u53ef\u5f4c\u88dc\u91cd\u5927\u5b89\u5168\u6f0f\u6d1e\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7dad\u6301\u9ad8\u5f37\u5ea6\u7684\u9632\u8b77\u7b49\u7d1a\u3002<\/p>\n<h2>\u5f37\u5316SSH\u52a0\u5bc6\u80fd\u529b<\/h2>\n<p>\u9700\u63a1\u7528\u9ad8\u5f37\u5ea6\u52a0\u5bc6\u6f14\u7b97\u6cd5\u78ba\u4fddSSH\u9023\u7dda\u5b89\u5168\u3002\u653b\u64ca\u8005\u5e38\u5617\u8a66\u7834\u89e3\u5f31\u52a0\u5bc6\u6f14\u7b97\u6cd5\uff0c\u4f7f\u7528\u5f37\u52a0\u5bc6\u53ef\u5927\u5e45\u63d0\u5347\u8cc7\u6599\u7aca\u807d\u8207\u6191\u8b49\u7aca\u53d6\u7684\u96e3\u5ea6\u3002\u61c9\u5b9a\u671f\u6aa2\u67e5\u8a2d\u5b9a\uff0c\u78ba\u4fdd\u59cb\u7d42\u4f7f\u7528\u6700\u9069\u5408\u7684\u52a0\u5bc6\u65b9\u6848\u3002<\/p>\n<h3>\u4f7f\u7528\u9ad8\u5f37\u5ea6\u52a0\u5bc6\u6f14\u7b97\u6cd5\u8207\u8a0a\u606f\u9a57\u8b49\u78bc<\/h3>\n<p>\u52a0\u5bc6\u6f14\u7b97\u6cd5\uff08Cipher\uff09\u8207\u8a0a\u606f\u9a57\u8b49\u78bc\uff08MAC\uff09\u5171\u540c\u4fdd\u969c\u50b3\u8f38\u8cc7\u6599\u5b89\u5168\uff1a\u52a0\u5bc6\u6f14\u7b97\u6cd5\u6703\u5c0d\u8cc7\u6599\u9032\u884c\u52a0\u5bc6\u8655\u7406\uff0c\u9632\u6b62\u5167\u5bb9\u88ab\u7aca\u53d6\u8b80\u53d6\uff1b\u8a0a\u606f\u9a57\u8b49\u78bc\u5247\u8ca0\u8cac\u6821\u9a57\u8cc7\u6599\u5b8c\u6574\u6027\uff0c\u907f\u514d\u8cc7\u6599\u5728\u7db2\u8def\u50b3\u8f38\u904e\u7a0b\u4e2d\u906d\u5230\u7ac4\u6539\u3002\u5169\u8005\u7686\u61c9\u9078\u7528\u76ee\u524d\u5f37\u5ea6\u6700\u9ad8\u7684\u9078\u9805\u3002<\/p>\n<p>\u53ef\u5728SSH\u8a2d\u5b9a\u6a94\u4e2d\u8a2d\u5b9a\u76f8\u95dc\u9078\u9805\u3002\u958b\u555f <code>\/etc\/ssh\/sshd_config<\/code>\uff0c\u65b0\u589e\u6216\u66f4\u65b0\u4ee5\u4e0b\u8a2d\u5b9a\u884c\uff1a<\/p>\n<pre><code>Ciphers aes256-ctr,aes192-ctr,aes128-ctr\r\nMACs hmac-sha2-256,hmac-sha2-512<\/code><\/pre>\n<p>\u5132\u5b58\u6a94\u6848\u5f8c\u91cd\u65b0\u555f\u52d5\u670d\u52d9\uff0c\u78ba\u4fdd\u6bcf\u6b21SSH\u9023\u7dda\u7686\u63a1\u7528\u9ad8\u5f37\u5ea6\u52a0\u5bc6\u3002<\/p>\n<blockquote>\n<p>\u5c0f\u63d0\u9192\uff1a\u6bcf\u6b21\u7cfb\u7d71\u91cd\u5927\u66f4\u65b0\u5f8c\u90fd\u61c9\u8907\u67e5\u52a0\u5bc6\u8a2d\u5b9a\uff0c\u7522\u696d\u53ef\u80fd\u6703\u63a8\u51fa\u65b0\u7684\u52a0\u5bc6\u6a19\u6e96\uff0c\u9700\u6301\u7e8c\u7dad\u8b77\u52a0\u5bc6\u5f37\u5ea6\u3002<\/p>\n<\/blockquote>\n<h3>\u8a2d\u5b9aSSH\u767b\u5165\u6a6b\u5e45\u8a0a\u606f<\/h3>\n<p>\u767b\u5165\u6a6b\u5e45\u6703\u5728\u4f7f\u7528\u8005\u767b\u5165\u524d\u986f\u793a\u63d0\u793a\u8cc7\u8a0a\uff0c\u53ef\u7528\u65bc\u544a\u77e5\u4f7f\u7528\u8005\u5b89\u5168\u898f\u7bc4\uff0c\u6216\u5411\u653b\u64ca\u8005\u660e\u793aSSH\u5b58\u53d6\u8655\u65bc\u76e3\u63a7\u72c0\u614b\u3002\u660e\u78ba\u7684\u6a6b\u5e45\u96d6\u7121\u6cd5\u63d0\u5347\u52a0\u5bc6\u5f37\u5ea6\uff0c\u4f46\u80fd\u6e05\u695a\u898f\u7bc4\u5b58\u53d6\u898f\u5247\uff0c\u5c0d\u90e8\u5206\u653b\u64ca\u5177\u6709\u5687\u963b\u6548\u679c\u3002<\/p>\n<p>\u8a2d\u5b9a\u767b\u5165\u6a6b\u5e45\u7684\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\n<p>\u5efa\u7acb\u5b58\u653e\u6a6b\u5e45\u5167\u5bb9\u7684\u6587\u5b57\u6a94\uff0c\u4f8b\u5982 <code>\/etc\/ssh\/sshd_banner<\/code>\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u8a2d\u5b9a\u6a94\u4e2d\u65b0\u589e\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre><code>Banner \/etc\/ssh\/sshd_banner<\/code><\/pre>\n<\/li>\n<li>\n<p>\u91cd\u65b0\u555f\u52d5SSH\u670d\u52d9\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u898f\u7bc4\u7684\u767b\u5165\u6a6b\u5e45\u9664\u4e86\u80fd\u63d0\u9192\u4f7f\u7528\u8005\u9075\u5b88\u5b58\u53d6\u898f\u5247\uff0c\u4e5f\u80fd\u5c55\u73fe\u60a8\u5c0d\u65bc\u52a0\u5bc6\u5b89\u5168\u8207SSH\u9632\u8b77\u7684\u91cd\u8996\u3002<\/p>\n<h2>SSH\u5b89\u5168\u76e3\u63a7\u8207\u66f4\u65b0\u7dad\u8b77<\/h2>\n<h3>\u958b\u555fSSH\u65e5\u8a8c\u8a18\u9304<\/h3>\n<p>\u9700\u958b\u555fSSH\u670d\u52d9\u7684\u65e5\u8a8c\u529f\u80fd\uff0c\u8ffd\u8e64\u6240\u6709\u5617\u8a66\u5b58\u53d6\u4f3a\u670d\u5668\u7684\u884c\u70ba\u3002\u65e5\u8a8c\u8a18\u9304\u53ef\u64f7\u53d6\u95dc\u9375\u5b89\u5168\u4e8b\u4ef6\uff0c\u5354\u52a9\u5118\u65e9\u767c\u73fe\u7570\u5e38\u3002\u958b\u555f\u65e5\u8a8c\u5f8c\uff0c\u60a8\u53ef\u4ee5\uff1a<\/p>\n<ul>\n<li>\n<p>\u8a18\u9304\u6240\u6709\u767b\u5165\u5617\u8a66\uff0c\u5305\u542b\u6210\u529f\u8207\u5931\u6557\u7684\u767b\u5165\u3002<\/p>\n<\/li>\n<li>\n<p>\u8ffd\u8e64\u53ef\u7591\u884c\u70ba\uff0c\u4f8b\u5982\u91cd\u8907\u6027\u7684\u5bc6\u78bc\u731c\u6e2c\u52d5\u4f5c\u3002<\/p>\n<\/li>\n<li>\n<p>\u70ba\u7570\u5e38\u4e8b\u4ef6\u8a2d\u5b9a\u544a\u8b66\uff0c\u4ee5\u4fbf\u5feb\u901f\u56de\u61c9\u8655\u7f6e\u3002<\/p>\n<\/li>\n<li>\n<p>\u900f\u904e\u6392\u67e5\u672a\u7d93\u6388\u6b0a\u7684\u64cd\u4f5c\uff0c\u8fa8\u8b58\u5165\u4fb5\u5617\u8a66\u3002<\/p>\n<\/li>\n<li>\n<p>\u900f\u904e\u5c01\u9396IP\u6216\u66f4\u65b0\u8a2d\u5b9a\uff0c\u5feb\u901f\u56de\u61c9\u5b89\u5168\u4e8b\u4ef6\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u78ba\u8a8d\u8a2d\u5b9a\u6a94\u4e2d\u7684\u76f8\u95dc\u8a2d\u5b9a\u6b63\u78ba\uff0c\u5373\u53ef\u555f\u7528\u65e5\u8a8c\u529f\u80fd\u3002\u591a\u6578\u7cfb\u7d71\u9810\u8a2d\u958b\u555fSSH\u6d3b\u52d5\u65e5\u8a8c\uff0c\u4f46\u4ecd\u5efa\u8b70\u6aa2\u67e5\u4e26\u8abf\u6574\u8a2d\u5b9a\uff0c\u4ee5\u7372\u5f97\u66f4\u5b8c\u5584\u7684\u5b89\u5168\u9632\u8b77\u3002<\/p>\n<h3>\u76e3\u63a7\u53ef\u7591\u6d3b\u52d5<\/h3>\n<p>\u61c9\u5b9a\u671f\u6aa2\u8996\u65e5\u8a8c\uff0c\u900f\u904e\u98a8\u96aa\u5fb5\u5146\u63d0\u524d\u6514\u622a\u653b\u64ca\u3001\u907f\u514d\u640d\u5931\u3002\u91cd\u9ede\u76e3\u63a7\u9805\u76ee\u5305\u542b\uff1a<\/p>\n<ul>\n<li>\n<p>\u9a57\u8b49\u65e5\u8a8c\uff1a\u8a18\u9304\u6240\u6709\u767b\u5165\u5617\u8a66\u7684\u4f86\u6e90\u8cc7\u8a0a\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b58\u53d6\u65e5\u8a8c\uff1a\u6392\u67e5\u7570\u5e38\u6216\u975e\u9810\u671f\u7684\u9023\u7dda\u884c\u70ba\u3002<\/p>\n<\/li>\n<li>\n<p>\u6307\u4ee4\u6b77\u53f2\uff1a\u6838\u67e5\u662f\u5426\u6709\u4eba\u57f7\u884c\u4e86\u9ad8\u98a8\u96aa\u6307\u4ee4\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u82e5\u767c\u73fe\u91cd\u8907\u7684\u5931\u6557\u767b\u5165\u8a18\u9304\u6216\u672a\u77e5\u4f7f\u7528\u8005\uff0c\u61c9\u7acb\u5373\u5c55\u958b\u8abf\u67e5\uff0c\u5118\u65e9\u8655\u7f6e\u53ef\u907f\u514d\u554f\u984c\u64f4\u5927\u3002<\/p>\n<h3>\u7dad\u6301SSH\u7248\u672c\u66f4\u65b0<\/h3>\n<p>\u5fc5\u9808\u7dad\u6301\u8edf\u9ad4\u7248\u672c\u70ba\u6700\u65b0\u72c0\u614b\uff0c\u7248\u672c\u66f4\u65b0\u6703\u4fee\u5fa9\u5b89\u5168\u6f0f\u6d1e\u4e26\u65b0\u589e\u529f\u80fd\u3002\u653b\u64ca\u8005\u5e38\u91dd\u5c0d\u820a\u7248\u672c\u767c\u8d77\u653b\u64ca\uff0c\u56e0\u70ba\u820a\u7248\u672c\u5b58\u5728\u5df2\u77e5\u7684\u5b89\u5168\u7f3a\u9677\u3002\u61c9\u5b9a\u671f\u6aa2\u67e5\u66f4\u65b0\u4e26\u5118\u901f\u5b89\u88dd\u5347\u7d1a\u3002<\/p>\n<p>\u53ef\u900f\u904e\u7cfb\u7d71\u5957\u4ef6\u7ba1\u7406\u54e1\u57f7\u884c\u66f4\u65b0\uff0c\u7bc4\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>sudo apt-get update\r\nsudo apt-get upgrade openssh-server<\/code><\/pre>\n<p>\u66f4\u65b0\u5b8c\u6210\u5f8c\uff0c\u8907\u67e5\u8a2d\u5b9a\u6a94\u78ba\u4fdd\u8a2d\u5b9a\u503c\u4f9d\u7136\u6b63\u78ba\u6709\u6548\u3002\u7dad\u6301\u7248\u672c\u66f4\u65b0\u53ef\u8b93\u4f3a\u670d\u5668\u514d\u65bc\u65b0\u578b\u5a01\u8105\u7684\u4fb5\u5bb3\u3002<\/p>\n<h2>SSH\u5b58\u53d6\u5b89\u5168\u6700\u4f73\u5be6\u52d9<\/h2>\n<h3>\u5b9a\u671f\u5b89\u5168\u7a3d\u6838<\/h3>\n<p>\u9700\u5b9a\u671f\u57f7\u884c\u5b89\u5168\u7a3d\u6838\uff0c\u78ba\u4fdd\u71df\u904b\u74b0\u5883\u5b89\u5168\u3002\u7a3d\u6838\u53ef\u767c\u73fe\u7cfb\u7d71\u5f31\u9ede\uff0c\u5728\u88ab\u653b\u64ca\u8005\u5229\u7528\u524d\u5b8c\u6210\u4fee\u5fa9\u3002\u61c9\u9075\u5faa\u898f\u7bc4\u6d41\u7a0b\uff0c\u5168\u9762\u6838\u67e5\u8a2d\u5b9a\u503c\u8207\u4f7f\u7528\u8005\u6d3b\u52d5\u3002<\/p>\n<p>\u4e0b\u8868\u5217\u51fa\u4e86\u5b8c\u6574SSH\u5b89\u5168\u7a3d\u6838\u7684\u6838\u5fc3\u6b65\u9a5f\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6b65\u9a5f<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8aaa\u660e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>1<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u555f\u7528\u91d1\u9470\u8a8d\u8b49\uff0c\u63d0\u5347\u5b89\u5168\u7b49\u7d1a\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>2<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u505c\u7528root\u767b\u5165\uff0c\u9632\u7bc4\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>3<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5f37\u5236\u4f7f\u7528\u9ad8\u5f37\u5ea6\u52a0\u5bc6\uff0c\u4fdd\u8b77\u50b3\u8f38\u4e2d\u8cc7\u6599\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>4<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7dad\u6301\u7cfb\u7d71\u66f4\u65b0\uff0c\u964d\u4f4e\u6f0f\u6d1e\u98a8\u96aa\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>5<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5c0e\u5165\u591a\u56e0\u7d20\u9a57\u8b49\uff0c\u984d\u5916\u5f37\u5316\u9632\u8b77\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>6<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u958b\u555f\u65e5\u8a8c\u8207\u76e3\u63a7\uff0c\u8ffd\u8e64\u5b58\u53d6\u8207\u8b8a\u66f4\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>7<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u843d\u5be6\u5b58\u53d6\u63a7\u5236\uff0c\u9650\u5236\u4f7f\u7528\u8005\u6b0a\u9650\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>8<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u70baSSH\u91d1\u9470\u8a2d\u5b9a\u5bc6\u78bc\uff0c\u4fdd\u8b77\u79c1\u5bc6\u91d1\u9470\u5b89\u5168\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u4e5f\u61c9\u505a\u597d\u9592\u7f6e\u9023\u7dda\u7ba1\u7406\uff0c\u5728\u8a2d\u5b9a\u6a94\u4e2d\u8a2d\u5b9a <code>ClientAliveInterval<\/code> \u8207 <code>ClientAliveCountMax<\/code> 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[&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/how-to-protect-your-ssh-port-from-scanning\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":12,"featured_media":34166,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[267],"tags":[],"class_list":["post-34169","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u5982\u4f55\u4fdd\u8b77SSH\u9023\u63a5\u57e0\u514d\u53d7\u6383\u63cf<\/title>\n<meta name=\"description\" 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