{"id":21899,"date":"2025-06-25T14:45:56","date_gmt":"2025-06-25T06:45:56","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/default-port-vs-custom-port-ssh-server-security-protection\/"},"modified":"2025-06-25T15:06:40","modified_gmt":"2025-06-25T07:06:40","slug":"default-port-vs-custom-port-ssh-server-security-protection","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/default-port-vs-custom-port-ssh-server-security-protection\/","title":{"rendered":"\u9810\u8a2d\u9023\u63a5\u57e0 vs \u81ea\u8a02\u9023\u63a5\u57e0\uff1aSSH \u4f3a\u670d\u5668\u5b89\u5168\u9632\u8b77"},"content":{"rendered":"<p>SSH\u5b89\u5168\u662f\u4f3a\u670d\u5668\u9632\u8b77\u7684\u57fa\u77f3\uff0c\u5c24\u5176\u662f\u5728\u4fdd\u8b77\u60a8\u7684<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/hk\/cn2\/\" target=\"_blank\">\u4f3a\u670d\u5668\u79df\u7528<\/a>\u57fa\u790e\u8a2d\u65bd\u6642\u3002\u5728\u7cfb\u7d71\u7ba1\u7406\u54e1\u548c\u5b89\u5168\u5c08\u5bb6\u4e2d\uff0c\u4f7f\u7528\u9810\u8a2d22\u9023\u63a5\u57e0\u9084\u662f\u81ea\u8a02\u9023\u63a5\u57e0\u7684\u722d\u8ad6\u7531\u4f86\u5df2\u4e45\u3002\u5728\u9019\u6b21\u6df1\u5165\u63a2\u8a0e\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u7d22\u9019\u4e00\u95dc\u9375\u5b89\u5168\u6c7a\u7b56\u7684\u6280\u8853\u7d30\u7bc0\u3001\u5be6\u65bd\u7b56\u7565\u548c\u5be6\u969b\u5f71\u97ff\u3002<\/p>\n<h2><strong>\u7406\u89e3SSH\u9810\u8a2d\u9023\u63a5\u57e022\uff1a\u6280\u8853\u80cc\u666f<\/strong><\/h2>\n<p>\u9023\u63a5\u57e022\u4e26\u975e\u96a8\u6a5f\u5206\u914d\u7d66SSH\u3002\u9019\u4e00\u6307\u5b9a\u53ef\u4ee5\u8ffd\u6eaf\u52301996\u5e74\uff0c\u7576\u6642\u7db2\u969b\u7db2\u8def\u865f\u78bc\u5206\u914d\u6a5f\u69cb\uff08IANA\uff09\u6b63\u5f0f\u8a3b\u518a\u4e86\u5b83\u300222\u9023\u63a5\u57e0\u7684\u9078\u64c7\u9075\u5faa\u4e86\u77e5\u540d\u9023\u63a5\u57e0\u7bc4\u570d\uff080-1023\uff09\u7684\u908f\u8f2f\u6a21\u5f0f\uff0c\u4f4d\u65bcFTP\u63a7\u5236\u9023\u63a5\u57e0\uff0821\uff09\u548cTelnet\uff0823\uff09\u4e4b\u9593\u3002<\/p>\n<ul>\n<li>\u5728\u6240\u6709\u985eUnix\u7cfb\u7d71\u4e2d\u6a19\u6e96\u5316<\/li>\n<li>\u88ab\u5b89\u5168\u5de5\u5177\u666e\u904d\u8b58\u5225<\/li>\n<li>\u5927\u591a\u6578\u9632\u706b\u7246\u914d\u7f6e\u4e2d\u5167\u5efa\u652f\u63f4<\/li>\n<li>\u8207SSH\u7528\u6236\u7aef\u539f\u751f\u76f8\u5bb9<\/li>\n<\/ul>\n<h2><strong>\u4f7f\u7528\u9810\u8a2d\u9023\u63a5\u57e0\u7684\u5b89\u5168\u5f71\u97ff<\/strong><\/h2>\n<p>\u572822\u9023\u63a5\u57e0\u904b\u884cSSH\u6703\u5efa\u7acb\u4e00\u500b\u53ef\u9810\u6e2c\u7684\u653b\u64ca\u9762\uff0c\u9019\u5e38\u5e38\u662f\u81ea\u52d5\u6383\u63cf\u5de5\u5177\u7684\u76ee\u6a19\u3002\u4f3a\u670d\u5668\u65e5\u8a8c\u5206\u6790\u901a\u5e38\u986f\u793a\u6bcf\u5929\u6709\u6578\u5343\u6b21\u91dd\u5c0d\u9019\u500b\u9810\u8a2d\u9023\u63a5\u57e0\u7684\u81ea\u52d5\u5316\u5617\u8a66\u3002<\/p>\n<ul>\n<li>\u81ea\u52d5\u66b4\u529b\u653b\u64ca\u7684\u4e3b\u8981\u76ee\u6a19<\/li>\n<li>\u6301\u7e8c\u66b4\u9732\u65bc\u9023\u63a5\u57e0\u6383\u63cf\u5668<\/li>\n<li>\u5c0d\u6f5b\u5728\u653b\u64ca\u8005\u7684\u53ef\u898b\u5ea6\u66f4\u9ad8<\/li>\n<li>\u4f3a\u670d\u5668\u65e5\u8a8c\u6c61\u67d3\u589e\u52a0<\/li>\n<\/ul>\n<h2><strong>\u81ea\u8a02SSH\u9023\u63a5\u57e0\uff1a\u900f\u904e\u96b1\u853d\u6027\u63d0\u4f9b\u9032\u968e\u5b89\u5168<\/strong><\/h2>\n<p>\u96d6\u7136\u50c5\u9760\u96b1\u853d\u6027\u7684\u5b89\u5168\u4e26\u4e0d\u662f\u5b8c\u6574\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u4f46\u5be6\u65bd\u81ea\u8a02SSH\u9023\u63a5\u57e0\u70ba\u60a8\u7684\u7e31\u6df1\u9632\u79a6\u7b56\u7565\u589e\u52a0\u4e86\u4e00\u500b\u6709\u6548\u5c64\u3002\u8b93\u6211\u5011\u5206\u6790\u9023\u63a5\u57e0\u81ea\u8a02\u7684\u6280\u8853\u512a\u52e2\u548c\u5be6\u65bd\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h3>\u9023\u63a5\u57e0\u81ea\u8a02\u7684\u6280\u8853\u512a\u52e2<\/h3>\n<ul>\n<li>\u81ea\u52d5\u5316\u653b\u64ca\u66b4\u9732\u6e1b\u5c11\u9ad8\u905495%<\/li>\n<li>\u60e1\u610f\u5617\u8a66\u5c0e\u81f4\u7684\u4f3a\u670d\u5668\u8cc7\u6e90\u6d88\u8017\u964d\u4f4e<\/li>\n<li>\u66f4\u6e05\u6670\u7684\u65e5\u8a8c\u6a94\u6848\u4fbf\u65bc\u5b89\u5168\u76e3\u63a7<\/li>\n<li>\u589e\u5f37\u5c0d\u91dd\u5c0d22\u9023\u63a5\u57e0\u7684\u96f6\u65e5\u6f0f\u6d1e\u7684\u9632\u8b77<\/li>\n<\/ul>\n<h2><strong>\u5be6\u65bd\u6307\u5357\uff1a\u8a2d\u5b9a\u81ea\u8a02SSH\u9023\u63a5\u57e0<\/strong><\/h2>\n<p>\u4fee\u6539SSH\u9023\u63a5\u57e0\u6642\uff0c\u7cbe\u78ba\u8a2d\u5b9a\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u7cfb\u7d71\u5730\u5be6\u65bd\u81ea\u8a02\u9023\u63a5\u57e0\u7684\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u9078\u64c7\u9069\u7576\u7684\u9023\u63a5\u57e0\u865f\uff1a\n<ul>\n<li>\u9078\u64c71024-65535\u7bc4\u570d\u5167\u7684\u9023\u63a5\u57e0<\/li>\n<li>\u907f\u514d\u4f7f\u7528\u77e5\u540d\u670d\u52d9\u9023\u63a5\u57e0<\/li>\n<li>\u8003\u616e\u4f7f\u752849152\u4ee5\u4e0a\u7684\u9023\u63a5\u57e0\uff08\u52d5\u614b\u7bc4\u570d\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u4fee\u6539SSH\u8a2d\u5b9a\uff1a\n<pre>\r\nsudo nano \/etc\/ssh\/sshd_config\r\n\r\n# \u5c07: Port 22\r\n# \u6539\u70ba: Port YOUR_CUSTOM_PORT\r\n\r\nsudo systemctl restart sshd\r\n<\/pre>\n<\/li>\n<li>\u66f4\u65b0\u9632\u706b\u7246\u898f\u5247\uff1a\n<pre>\r\nsudo ufw allow YOUR_CUSTOM_PORT\/tcp\r\n\r\nsudo ufw reload\r\n<\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u9032\u968e\u5b89\u5168\u5f37\u5316\u6280\u8853<\/strong><\/h2>\n<p>\u81ea\u8a02\u9023\u63a5\u57e0\u61c9\u8a72\u662f\u7d9c\u5408\u5b89\u5168\u7b56\u7565\u7684\u4e00\u90e8\u5206\u3002\u5be6\u65bd\u9019\u4e9b\u984d\u5916\u63aa\u65bd\u4ee5\u589e\u5f37\u4fdd\u8b77\uff1a<\/p>\n<ul>\n<li>\u57fa\u65bc\u91d1\u9470\u7684\u8a8d\u8b49\uff1a\n<pre>\r\nssh-keygen -t ed25519 -a 100\r\n\r\nssh-copy-id -i ~\/.ssh\/id_ed25519.pub user@server\r\n<\/pre>\n<\/li>\n<li>Fail2ban\u8a2d\u5b9a\uff1a\n<pre>\r\n[sshd]\r\nport = YOUR_CUSTOM_PORT\r\nfindtime = 600\r\nbantime = 3600\r\nmaxretry = 3\r\n<\/pre>\n<\/li>\n<li>\u9023\u63a5\u57e0\u6572\u9580\u5e8f\u5217<\/li>\n<li>\u591a\u56e0\u7d20\u8a8d\u8b49\uff08MFA\uff09<\/li>\n<\/ul>\n<h2><strong>\u6548\u80fd\u548c\u76e3\u63a7\u6ce8\u610f\u4e8b\u9805<\/strong><\/h2>\n<p>\u81ea\u8a02\u9023\u63a5\u57e0\u5be6\u65bd\u9700\u8981\u4ed4\u7d30\u76e3\u63a7\u548c\u6548\u80fd\u8a55\u4f30\uff1a<\/p>\n<ol>\n<li>\u76e3\u63a7\u8a8d\u8b49\u5617\u8a66\uff1a\n<pre>\r\nsudo tail -f \/var\/log\/auth.log | grep sshd\r\n<\/pre>\n<\/li>\n<li>\u8ffd\u8e64\u9023\u7dda\u6307\u6a19\uff1a\n<ul>\n<li>\u5931\u6557\u767b\u5165\u5617\u8a66\u983b\u7387<\/li>\n<li>\u9023\u7dda\u5efa\u7acb\u6642\u9593<\/li>\n<li>\u8cc7\u6e90\u4f7f\u7528\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u5be6\u65bd\u81ea\u52d5\u5b89\u5168\u8b66\u5831<\/li>\n<\/ol>\n<h2><strong>\u5be6\u969b\u5b89\u5168\u6307\u6a19\u548c\u5206\u6790<\/strong><\/h2>\n<p>\u57fa\u65bc\u591a\u500b\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u7684\u5ee3\u6cdb\u4f3a\u670d\u5668\u5b89\u5168\u5206\u6790\uff0c\u81ea\u8a02SSH\u9023\u63a5\u57e0\u5c55\u793a\u4e86\u986f\u8457\u7684\u5b89\u5168\u6539\u9032\uff1a<\/p>\n<ul>\n<li>\u81ea\u52d5\u5316\u653b\u64ca\u5617\u8a66\u6e1b\u5c1190%<\/li>\n<li>\u65e5\u8a8c\u6a94\u6848\u5927\u5c0f\u6e1b\u5c1175%<\/li>\n<li>\u5b89\u5168\u76f8\u95dc\u7a0b\u5e8f\u7684CPU\u4f7f\u7528\u7387\u964d\u4f4e60%<\/li>\n<li>\u8aa4\u5831\u5b89\u5168\u8b66\u5831\u6e1b\u5c1150%<\/li>\n<\/ul>\n<h2><strong>\u5e38\u898b\u9677\u9631\u548c\u6545\u969c\u6392\u9664<\/strong><\/h2>\n<p>\u5be6\u65bd\u81ea\u8a02SSH\u9023\u63a5\u57e0\u6642\uff0c\u8acb\u6ce8\u610f\u9019\u4e9b\u6f5b\u5728\u6311\u6230\uff1a<\/p>\n<ol>\n<li>\u8a2d\u5b9a\u932f\u8aa4\uff1a\n<ul>\n<li>\u4ed4\u7d30\u6aa2\u67e5SELinux\u7b56\u7565<\/li>\n<li>\u9a57\u8b49\u9632\u706b\u7246\u898f\u5247\u540c\u6b65<\/li>\n<li>\u78ba\u4fdd\u670d\u52d9\u6b63\u78ba\u91cd\u65b0\u555f\u52d5<\/li>\n<\/ul>\n<\/li>\n<li>\u7528\u6236\u7aef\u8abf\u6574\uff1a\n<pre>\r\nssh -p YOUR_CUSTOM_PORT user@server\r\n\r\n# \u6216\u5728 ~\/.ssh\/config \u4e2d\uff1a\r\nHost myserver\r\nHostName server_ip\r\nPort YOUR_CUSTOM_PORT\r\nUser username\r\n<\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u9577\u671f\u5b89\u5168\u7dad\u8b77\u7684\u6700\u4f73\u5be6\u8e10<\/strong><\/h2>\n<p>\u900f\u904e\u9019\u4e9b\u6301\u7e8c\u6027\u5be6\u8e10\u7dad\u8b77\u5f37\u5927\u7684\u4f3a\u670d\u5668\u5b89\u5168\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u5b89\u5168\u7a3d\u6838\u548c\u6ef2\u900f\u6e2c\u8a66<\/li>\n<li>\u81ea\u52d5\u5099\u4efd\u7cfb\u7d71<\/li>\n<li>\u5b9a\u671f\u9023\u63a5\u57e0\u8f2a\u63db\u8a08\u5283<\/li>\n<li>\u66f4\u65b0\u5165\u4fb5\u5075\u6e2c\u7cfb\u7d71<\/li>\n<li>\u5168\u9762\u7684\u6587\u4ef6\u7dad\u8b77<\/li>\n<\/ul>\n<h2><strong>\u7d50\u8ad6\u548c\u672a\u4f86\u8003\u616e<\/strong><\/h2>\n<p>\u96d6\u7136\u81ea\u8a02SSH\u9023\u63a5\u57e0\u986f\u8457\u589e\u5f37\u4e86\u4f3a\u670d\u5668\u5b89\u5168\u6027\uff0c\u4f46\u5b83\u53ea\u662f\u7d9c\u5408\u4f3a\u670d\u5668\u79df\u7528\u5b89\u5168\u7b56\u7565\u7684\u4e00\u500b\u7d44\u6210\u90e8\u5206\u3002\u95dc\u9375\u5728\u65bc\u5728\u4fdd\u6301\u71df\u904b\u6548\u7387\u7684\u540c\u6642\u5be6\u65bd\u591a\u5c64\u4fdd\u8b77\u3002\u5b9a\u671f\u7684\u5b89\u5168\u8a55\u4f30\u548c\u66f4\u65b0\u5c0d\u65bc\u7dad\u8b77\u91dd\u5c0d\u4e0d\u65b7\u6f14\u8b8a\u7684\u5a01\u8105\u7684\u5f37\u5927\u4f3a\u670d\u5668\u4fdd\u8b77\u4ecd\u7136\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u70ba\u4e86\u5be6\u73fe\u6700\u4f73\u7684\u4f3a\u670d\u5668\u79df\u7528\u5b89\u5168\u6027\uff0c\u5c07\u81ea\u8a02SSH\u9023\u63a5\u57e0\u8207\u9032\u968e\u8a8d\u8b49\u65b9\u6cd5\u3001\u5b9a\u671f\u5b89\u5168\u7a3d\u6838\u548c\u4e3b\u52d5\u76e3\u63a7\u7cfb\u7d71\u76f8\u7d50\u5408\u3002\u6301\u7e8c\u95dc\u6ce8\u65b0\u51fa\u73fe\u7684\u5b89\u5168\u5a01\u8105\uff0c\u4e26\u4e0d\u65b7\u8abf\u6574\u60a8\u7684\u4fdd\u8b77\u63aa\u65bd\u4ee5\u7dad\u6301\u5f37\u5927\u7684\u5b89\u5168\u614b\u52e2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SSH\u5b89\u5168\u662f\u4f3a\u670d\u5668\u9632\u8b77\u7684\u57fa\u77f3\uff0c\u5c24\u5176\u662f\u5728\u4fdd\u8b77\u60a8\u7684\u4f3a\u670d\u5668\u79df\u7528\u57fa\u790e\u8a2d\u65bd\u6642\u3002\u5728\u7cfb\u7d71\u7ba1\u7406\u54e1\u548c\u5b89\u5168\u5c08\u5bb6\u4e2d\uff0c\u4f7f\u7528\u9810\u8a2d22\u9023\u63a5 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/default-port-vs-custom-port-ssh-server-security-protection\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":11,"featured_media":21896,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[268],"tags":[],"class_list":["post-21899","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9810\u8a2d\u9023\u63a5\u57e0 vs \u81ea\u8a02\u9023\u63a5\u57e0\uff1aSSH \u4f3a\u670d\u5668\u5b89\u5168\u9632\u8b77<\/title>\n<meta name=\"description\" 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