{"id":211637,"date":"2023-12-22T11:17:30","date_gmt":"2023-12-22T03:17:30","guid":{"rendered":"https:\/\/www.idc.net\/help\/211637\/"},"modified":"2023-12-22T11:17:30","modified_gmt":"2023-12-22T03:17:30","slug":"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e8%ae%be%e7%bd%ae-ddos-%e4%bf%9d%e6%8a%a4%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/211637\/","title":{"rendered":"Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8bbe\u7f6e DDoS \u4fdd\u62a4\u673a\u5236"},"content":{"rendered":"<p><title id=\"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e8%ae%be%e7%bd%ae-ddos-%e4%bf%9d%e6%8a%a4%e6%9c%ba%e5%88%b6-HyuFFfUScv\">Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8bbe\u7f6e DDoS \u4fdd\u62a4\u673a\u5236<\/title><\/p>\n<h1 id=\"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e8%ae%be%e7%bd%ae-ddos-%e4%bf%9d%e6%8a%a4%e6%9c%ba%e5%88%b6-HyuFFfUScv\">Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8bbe\u7f6e DDoS \u4fdd\u62a4\u673a\u5236<\/h1>\n<p>DDoS \u653b\u51fb\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\uff0c\u5b83\u53ef\u4ee5\u5bfc\u81f4\u670d\u52a1\u5668\u8fc7\u8f7d\u3001\u670d\u52a1\u4e2d\u65ad\u548c\u6570\u636e\u6cc4\u9732\u7b49\u95ee\u9898\u3002\u4e3a\u4e86\u4fdd\u62a4 Linux \u670d\u52a1\u5668\u514d\u53d7 DDoS \u653b\u51fb\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u4e9b\u5b89\u5168\u7b56\u7565\u548c\u6280\u5de7\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u8bbe\u7f6e DDoS \u4fdd\u62a4\u673a\u5236\u7684\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e9%98%b2%e7%81%ab%e5%a2%99-HyuFFfUScv\">1. \u4f7f\u7528\u9632\u706b\u5899<\/h2>\n<p>\u9632\u706b\u5899\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u7f51\u7edc\u653b\u51fb\u7684\u91cd\u8981\u5de5\u5177\u3002\u5728 Linux \u7cfb\u7edf\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 iptables \u547d\u4ee4\u6765\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u547d\u4ee4\uff0c\u7528\u4e8e\u9650\u5236\u6765\u81ea\u7279\u5b9a IP \u5730\u5740\u7684\u8fde\u63a5\u6570\u91cf\uff1a<\/p>\n<pre><code>iptables -A INPUT -p tcp -m connlimit --connlimit-above 20 --connlimit-mask 32 -j DROP<\/code><\/pre>\n<p>\u8fd9\u4e2a\u547d\u4ee4\u5c06\u9650\u5236\u6765\u81ea\u540c\u4e00 IP \u5730\u5740\u7684 TCP \u8fde\u63a5\u6570\u91cf\u4e0d\u8d85\u8fc7 20 \u4e2a\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8c03\u6574\u8fd9\u4e2a\u503c\u3002<\/p>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e5%8f%8d%e5%90%91%e4%bb%a3%e7%90%86-HyuFFfUScv\">2. \u4f7f\u7528\u53cd\u5411\u4ee3\u7406<\/h2>\n<p>\u53cd\u5411\u4ee3\u7406\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u9690\u85cf\u670d\u52a1\u5668\u7684\u771f\u5b9e IP \u5730\u5740\uff0c\u4ece\u800c\u51cf\u5c11\u53d7\u5230 DDoS \u653b\u51fb\u7684\u98ce\u9669\u3002\u5e38\u89c1\u7684\u53cd\u5411\u4ee3\u7406\u8f6f\u4ef6\u5305\u62ec Nginx \u548c Apache\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 Nginx \u7684\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre><code>server {\n    listen 80;\n    server_name example.com;\n\n    location \/ {\n        proxy_pass http:\/\/backend;\n        proxy_set_header Host $host;\n        proxy_set_header X-Real-IP $remote_addr;\n    }\n\n    location \/backend {\n        proxy_pass http:\/\/backend_servers;\n        proxy_set_header Host $host;\n        proxy_set_header X-Real-IP $remote_addr;\n    }\n}<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u914d\u7f6e\u4e2d\uff0cNginx \u5c06\u63a5\u6536\u5230\u7684\u8bf7\u6c42\u8f6c\u53d1\u5230\u540e\u7aef\u670d\u52a1\u5668\uff0c\u5e76\u5c06\u771f\u5b9e IP \u5730\u5740\u4f20\u9012\u7ed9\u540e\u7aef\u670d\u52a1\u5668\u3002<\/p>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8%e8%b4%9f%e8%bd%bd%e5%9d%87%e8%a1%a1-HyuFFfUScv\">3. \u4f7f\u7528\u8d1f\u8f7d\u5747\u8861<\/h2>\n<p>\u8d1f\u8f7d\u5747\u8861\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6563\u6d41\u91cf\uff0c\u4ece\u800c\u51cf\u8f7b\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u548c DDoS \u653b\u51fb\u7684\u5f71\u54cd\u3002\u5e38\u89c1\u7684\u8d1f\u8f7d\u5747\u8861\u8f6f\u4ef6\u5305\u62ec HAProxy \u548c Nginx\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 HAProxy \u7684\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre><code>frontend http-in\n    bind *:80\n    default_backend servers\n\nbackend servers\n    balance roundrobin\n    server server1 192.168.0.1:80 check\n    server server2 192.168.0.2:80 check<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u914d\u7f6e\u4e2d\uff0cHAProxy \u5c06\u6d41\u91cf\u5206\u53d1\u5230\u4e24\u53f0\u540e\u7aef\u670d\u52a1\u5668\uff0c\u4ece\u800c\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e5%8f%8d%e5%90%91-dns-%e6%9f%a5%e6%89%be-HyuFFfUScv\">4. \u4f7f\u7528\u53cd\u5411 DNS \u67e5\u627e<\/h2>\n<p>DDoS \u653b\u51fb\u8005\u901a\u5e38\u4f7f\u7528\u5927\u91cf\u7684\u5047 IP \u5730\u5740\u8fdb\u884c\u653b\u51fb\u3002\u901a\u8fc7\u4f7f\u7528\u53cd\u5411 DNS \u67e5\u627e\uff0c\u6211\u4eec\u53ef\u4ee5\u8bc6\u522b\u51fa\u8fd9\u4e9b\u5047 IP \u5730\u5740\uff0c\u5e76\u91c7\u53d6\u76f8\u5e94\u7684\u63aa\u65bd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 Python \u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code>import socket\n\ndef reverse_dns_lookup(ip):\n    try:\n        return socket.gethostbyaddr(ip)[0]\n    except socket.herror:\n        return None\n\nip = \"192.168.0.1\"\nhostname = reverse_dns_lookup(ip)\nif hostname is None:\n    print(\"IP \u5730\u5740 {} \u53ef\u80fd\u662f\u5047\u7684\u3002\".format(ip))\nelse:\n    print(\"IP \u5730\u5740 {} \u5bf9\u5e94\u7684\u4e3b\u673a\u540d\u662f {}\u3002\".format(ip, hostname))<\/code><\/pre>\n<p>\u8fd9\u4e2a\u4ee3\u7801\u5c06\u5c1d\u8bd5\u901a\u8fc7\u53cd\u5411 DNS \u67e5\u627e\u83b7\u53d6\u7ed9\u5b9a IP \u5730\u5740\u7684\u4e3b\u673a\u540d\u3002\u5982\u679c\u4e3b\u673a\u540d\u4e3a\u7a7a\uff0c\u5219\u8bf4\u660e\u8be5 IP \u5730\u5740\u53ef\u80fd\u662f\u5047\u7684\u3002<\/p>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8%e4%ba%91%e6%9c%8d%e5%8a%a1%e6%8f%90%e4%be%9b%e5%95%86%e7%9a%84-ddos-%e4%bf%9d%e6%8a%a4-HyuFFfUScv\">5. \u4f7f\u7528\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684 DDoS \u4fdd\u62a4<\/h2>\n<p>\u8bb8\u591a\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u90fd\u63d0\u4f9b\u4e86\u4e13\u95e8\u7684 DDoS \u4fdd\u62a4\u670d\u52a1\u3002\u8fd9\u4e9b\u670d\u52a1\u901a\u5e38\u5305\u62ec\u6d41\u91cf\u76d1\u6d4b\u3001\u6d41\u91cf\u8fc7\u6ee4\u548c\u81ea\u52a8\u7f13\u89e3\u7b49\u529f\u80fd\u3002\u5982\u679c\u4f60\u4f7f\u7528\u4e91\u670d\u52a1\u5668\uff0c\u5efa\u8bae\u4f60\u4f7f\u7528\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684 DDoS \u4fdd\u62a4\u670d\u52a1\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-HyuFFfUScv\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528\u9632\u706b\u5899\u3001\u53cd\u5411\u4ee3\u7406\u3001\u8d1f\u8f7d\u5747\u8861\u3001\u53cd\u5411 DNS \u67e5\u627e\u548c\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\u7684 DDoS \u4fdd\u62a4\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u62a4 Linux \u670d\u52a1\u5668\u514d\u53d7 DDoS \u653b\u51fb\u7684\u5f71\u54cd\u3002\u8bf7\u8bb0\u4f4f\uff0c\u7f51\u7edc\u5b89\u5168\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u6211\u4eec\u9700\u8981\u4e0d\u65ad\u66f4\u65b0\u548c\u6539\u8fdb\u6211\u4eec\u7684\u5b89\u5168\u7b56\u7565\u3002<\/p>\n<p>\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\uff0c\u63d0\u4f9b\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u3002\u70b9\u51fb<a href=\"https:\/\/idc.net\">\u8fd9\u91cc<\/a>\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8bbe\u7f6e DDoS \u4fdd\u62a4\u673a\u5236 Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u8bbe\u7f6e DDoS \u4fdd\u62a4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-211637","post","type-post","status-publish","format-standard","hentry","category-centos"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/211637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=211637"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/211637\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=211637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=211637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=211637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}