{"id":44604,"date":"2024-10-06T16:51:20","date_gmt":"2024-10-06T08:51:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44604\/"},"modified":"2024-10-06T16:51:20","modified_gmt":"2024-10-06T08:51:20","slug":"linux-%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%99%90%e5%88%b6%e6%af%8f%e5%80%8b%e7%94%a8%e6%88%b6%e7%9a%84%e7%99%bb%e9%8c%84%e6%ac%a1%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44604\/","title":{"rendered":"Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u6b21\u6578"},"content":{"rendered":"<h1 id=\"linux-%e4%bc%ba%e6%9c%8d%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%99%90%e5%88%b6%e6%af%8f%e5%80%8b%e7%94%a8%e6%88%b6%e7%9a%84%e7%99%bb%e9%8c%84%e6%ac%a1%e6%95%b8-fPdiVthjqO\">Linux \u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u6b21\u6578<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u4f3a\u670d\u5668\u5b89\u5168\u6027\u6210\u70ba\u4e86\u6bcf\u500b\u4f01\u696d\u548c\u500b\u4eba\u7528\u6236\u7684\u9996\u8981\u4efb\u52d9\u3002Linux \u4f3a\u670d\u5668\u56e0\u5176\u7a69\u5b9a\u6027\u548c\u9748\u6d3b\u6027\u800c\u5ee3\u53d7\u6b61\u8fce\uff0c\u4f46\u540c\u6642\u4e5f\u9762\u81e8\u8457\u5404\u7a2e\u5b89\u5168\u5a01\u8105\u3002\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u6b21\u6578\u662f\u4e00\u7a2e\u6709\u6548\u7684\u5b89\u5168\u7b56\u7565\uff0c\u53ef\u4ee5\u9632\u6b62\u66b4\u529b\u7834\u89e3\u653b\u64ca\uff0c\u4fdd\u8b77\u4f3a\u670d\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%9a%b4%e5%8a%9b%e7%a0%b4%e8%a7%a3%e6%94%bb%e6%93%8a%ef%bc%9f-fPdiVthjqO\">\u4ec0\u9ebc\u662f\u66b4\u529b\u7834\u89e3\u653b\u64ca\uff1f<\/h2>\n<p>\u66b4\u529b\u7834\u89e3\u653b\u64ca\u662f\u6307\u653b\u64ca\u8005\u901a\u904e\u4e0d\u65b7\u5617\u8a66\u4e0d\u540c\u7684\u7528\u6236\u540d\u548c\u5bc6\u78bc\u7d44\u5408\u4f86\u7372\u53d6\u7cfb\u7d71\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u9019\u7a2e\u653b\u64ca\u65b9\u5f0f\u901a\u5e38\u4f9d\u8cf4\u65bc\u81ea\u52d5\u5316\u5de5\u5177\uff0c\u80fd\u5920\u5728\u77ed\u6642\u9593\u5167\u5617\u8a66\u5927\u91cf\u7684\u767b\u9304\u4fe1\u606f\u3002\u82e5\u4e0d\u52a0\u4ee5\u9650\u5236\uff0c\u9019\u985e\u653b\u64ca\u53ef\u80fd\u5c0e\u81f4\u7528\u6236\u5e33\u865f\u88ab\u76dc\u7528\uff0c\u751a\u81f3\u6574\u500b\u4f3a\u670d\u5668\u7684\u5b89\u5168\u6027\u53d7\u5230\u5a01\u8105\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e8%a6%81%e9%99%90%e5%88%b6%e7%99%bb%e9%8c%84%e6%ac%a1%e6%95%b8%ef%bc%9f-fPdiVthjqO\">\u70ba\u4ec0\u9ebc\u8981\u9650\u5236\u767b\u9304\u6b21\u6578\uff1f<\/h2>\n<ul>\n<li><strong>\u6e1b\u5c11\u66b4\u529b\u7834\u89e3\u7684\u98a8\u96aa\uff1a<\/strong>\u901a\u904e\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u5617\u8a66\u6b21\u6578\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u653b\u64ca\u8005\u6210\u529f\u767b\u9304\u7684\u6a5f\u6703\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\uff1a<\/strong>\u904e\u591a\u7684\u767b\u9304\u5617\u8a66\u6703\u6d88\u8017\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u5f71\u97ff\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>\u589e\u5f37\u7528\u6236\u4fe1\u4efb\uff1a<\/strong>\u7528\u6236\u6703\u5c0d\u5b89\u5168\u6027\u8f03\u9ad8\u7684\u7cfb\u7d71\u66f4\u6709\u4fe1\u5fc3\uff0c\u5f9e\u800c\u63d0\u9ad8\u7528\u6236\u7684\u6eff\u610f\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-linux-%e4%bc%ba%e6%9c%8d%e5%99%a8%e4%b8%8a%e9%99%90%e5%88%b6%e7%99%bb%e9%8c%84%e6%ac%a1%e6%95%b8-fPdiVthjqO\">\u5982\u4f55\u5728 Linux \u4f3a\u670d\u5668\u4e0a\u9650\u5236\u767b\u9304\u6b21\u6578<\/h2>\n<p>\u5728 Linux \u7cfb\u7d71\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u5de5\u5177\u4f86\u9650\u5236\u767b\u9304\u6b21\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-pam%ef%bc%88%e5%8f%af%e6%8f%92%e6%8b%94%e8%aa%8d%e8%ad%89%e6%a8%a1%e5%a1%8a%ef%bc%89-fPdiVthjqO\">1. \u4f7f\u7528 PAM\uff08\u53ef\u63d2\u62d4\u8a8d\u8b49\u6a21\u584a\uff09<\/h3>\n<p>PAM \u662f Linux \u7cfb\u7d71\u4e2d\u7528\u65bc\u7ba1\u7406\u8a8d\u8b49\u7684\u6846\u67b6\u3002\u53ef\u4ee5\u901a\u904e\u7de8\u8f2f PAM \u914d\u7f6e\u6587\u4ef6\u4f86\u9650\u5236\u767b\u9304\u6b21\u6578\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u6b65\u9a5f\uff1a<\/p>\n<pre><code>sudo nano \/etc\/pam.d\/sshd<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre><code>auth required pam_tally2.so deny=5 onerr=fail<\/code><\/pre>\n<p>\u9019\u884c\u4ee3\u78bc\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u7528\u6236\u5728 5 \u6b21\u767b\u9304\u5617\u8a66\u5167\u672a\u80fd\u6210\u529f\u767b\u9304\uff0c\u5247\u8a72\u7528\u6236\u5c07\u88ab\u9396\u5b9a\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-fail2ban-fPdiVthjqO\">2. \u4f7f\u7528 Fail2ban<\/h3>\n<p>Fail2ban \u662f\u4e00\u500b\u6d41\u884c\u7684\u5b89\u5168\u5de5\u5177\uff0c\u53ef\u4ee5\u81ea\u52d5\u76e3\u63a7\u767b\u9304\u5617\u8a66\u4e26\u6839\u64da\u898f\u5247\u5c01\u9396\u53ef\u7591\u7684 IP \u5730\u5740\u3002\u5b89\u88dd\u548c\u914d\u7f6e Fail2ban \u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<pre><code>sudo apt-get install fail2ban<\/code><\/pre>\n<p>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u7de8\u8f2f\u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n<pre><code>sudo nano \/etc\/fail2ban\/jail.local<\/code><\/pre>\n<p>\u5728\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n<pre><code>[sshd]\nenabled = true\nmaxretry = 5\nbantime = 3600<\/code><\/pre>\n<p>\u9019\u6a23\u914d\u7f6e\u5f8c\uff0c\u82e5\u67d0\u500b IP \u5730\u5740\u5728 5 \u6b21\u767b\u9304\u5617\u8a66\u5167\u672a\u80fd\u6210\u529f\u767b\u9304\uff0c\u5247\u8a72 IP \u5c07\u88ab\u5c01\u9396 1 \u5c0f\u6642\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-iptables-fPdiVthjqO\">3. \u4f7f\u7528 iptables<\/h3>\n<p>iptables \u662f Linux \u7cfb\u7d71\u4e2d\u7684\u9632\u706b\u7246\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u9650\u5236\u7279\u5b9a IP \u5730\u5740\u7684\u767b\u9304\u6b21\u6578\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n<pre><code>sudo iptables -A INPUT -p tcp --dport 22 -i eth0 -m state --state NEW -m recent --set<\/code><\/pre>\n<pre><code>sudo iptables -A INPUT -p tcp --dport 22 -i eth0 -m state --state NEW -m recent --update --seconds 60 --hitcount 5 -j DROP<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u67d0\u500b IP \u5730\u5740\u5728 60 \u79d2\u5167\u5617\u8a66\u767b\u9304 5 \u6b21\uff0c\u5247\u8a72 IP \u5c07\u88ab\u62d2\u7d55\u8a2a\u554f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-fPdiVthjqO\">\u7e3d\u7d50<\/h2>\n<p>\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u6b21\u6578\u662f\u4fdd\u8b77 Linux \u4f3a\u670d\u5668\u5b89\u5168\u7684\u91cd\u8981\u63aa\u65bd\u4e4b\u4e00\u3002\u901a\u904e\u4f7f\u7528 PAM\u3001Fail2ban \u548c iptables \u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u66b4\u529b\u7834\u89e3\u653b\u64ca\u7684\u98a8\u96aa\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u4fe1\u4efb\u5ea6\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u5b89\u5168\u6027\u7684\u74b0\u5883\uff0c\u9019\u4e9b\u7b56\u7565\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u5b89\u5168\u7b56\u7565\u548c\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Linux\u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565\uff0c\u5b78\u7fd2\u5982\u4f55\u9650\u5236\u6bcf\u500b\u7528\u6236\u7684\u767b\u9304\u6b21\u6578\u4ee5\u589e\u5f37\u7cfb\u7d71\u5b89\u5168\u6027\uff0c\u9632\u6b62\u66b4\u529b\u7834\u89e3\u653b\u64ca\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-44604","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=44604"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44604\/revisions"}],"predecessor-version":[{"id":44605,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44604\/revisions\/44605"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}