\u4f5c\u4e3a\u7f51\u7ad9\u7ba1\u7406\u5458\uff0c\u60a8\u53ef\u80fd\u542c\u8bf4\u8fc7 DDoS \u548c DoS \u4f5c\u4e3a\u7f51\u7edc\u5b89\u5168\u98ce\u9669\u8fd9\u4e00\u672f\u8bed\u3002\u5c3d\u7ba1\u6709\u4e9b\u4eba\u53ef\u4ee5\u4e92\u6362\u4f7f\u7528\u8fd9\u4e9b\u672f\u8bed\uff0c\u4f46\u5b83\u4eec\u662f\u4e0d\u540c\u7c7b\u578b\u7684\u653b\u51fb\u3002\u60a8\u7684\u865a\u62df\u4e3b\u673a\u5c3d\u5176\u6240\u80fd\u9632\u5fa1\u653b\u51fb\uff0c\u4f46\u77e5\u8bc6\u5c31\u662f\u529b\u91cf\uff0c\u5982\u679c\u60a8\u77e5\u9053\u653b\u51fb\u7684\u8ff9\u8c61\u4ee5\u53ca\u53ef\u4ee5\u91c7\u53d6\u54ea\u4e9b\u63aa\u65bd\u6765\u9632\u5fa1\u653b\u51fb\uff0c\u5b83\u4f1a\u5e2e\u52a9\u60a8\u7684\u4e1a\u52a1\u3002\u4e5f\u8bb8\u60a8\u53ea\u662f\u60f3\u5927\u81f4\u4e86\u89e3\u4e00\u4e0b\uff0c\u5e76\u4e14(\u5982\u679c\u662f\u8fd9\u79cd\u60c5\u51b5)\u672c\u6307\u5357\u9002\u5408\u60a8\u3002<\/p>\n
\u57fa\u672c\u7f51\u7edc\u901a\u4fe1<\/span><\/p>\n \u5728\u6211\u4eec\u8fdb\u5165 DDoS \u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5148\u6765\u770b\u770b Web \u901a\u4fe1\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u3002\u5f53\u60a8\u5728\u6d4f\u89c8\u5668\u4e2d\u952e\u5165 URL \u65f6\uff0c\u5b83\u4f1a\u5bf9\u57df\u8fdb\u884c DNS \u67e5\u627e\uff0c\u627e\u5230 IP \u5730\u5740\uff0c\u7136\u540e\u8c03\u7528\u57df\u7684 Web \u670d\u52a1\u5668<\/strong><\/a>\u8bf7\u6c42\u8bbf\u95ee\u5185\u5bb9\u3002\u4f5c\u4e3a\u7f51\u7ad9\u7ba1\u7406\u5458\uff0c\u60a8\u53ef\u80fd\u77e5\u9053\u6bcf\u5929\u83b7\u5f97\u7684\u5e73\u5747\u6d41\u91cf\u3002\u60a8\u5728\u670d\u52a1\u5668\u4e0a\u8d2d\u4e70\u8d44\u6e90\u4ee5\u8ba1\u7b97\u5e73\u5747\u6d41\u91cf\u5e76\u786e\u4fdd\u60a8\u7684\u7f51\u7ad9\u59cb\u7ec8\u5feb\u901f\u8fd0\u884c\u3002\u63a8\u8350\u9605\u8bfb\uff1a\u300a\u7f51\u7ad9\u88abDDos\u653b\u51fb\u8be5\u600e\u4e48\u529e\u300b<\/a><\/p>\n \u5728\u60a8\u7684\u65fa\u5b63\uff0c\u60a8\u53ef\u80fd\u4f1a\u6269\u5927\u4e00\u70b9\u4ee5\u5e94\u5bf9\u6d41\u91cf\u7684\u589e\u52a0\u3002\u5927\u591a\u6570\u7f51\u7ad9\u7ba1\u7406\u5458\u90fd\u660e\u767d\uff0c\u66f4\u591a\u7684\u6d41\u91cf\u610f\u5473\u7740\u9700\u8981\u989d\u5916\u7684\u670d\u52a1\u5668\u8d44\u6e90\u3002<\/p>\n \u7f51\u7ad9\u7ba1\u7406\u5458\u4e4b\u95f4\u7684\u4e00\u4e2a\u5e38\u89c1\u8bef\u89e3\u662f\u5e26\u5bbd\u4e0e\u7f51\u7edc\u901f\u5ea6\u76f8\u540c\u3002\u5728\u8ba8\u8bba DDoS \u653b\u51fb\u65f6\u5e94\u8be5\u6ce8\u610f\uff0c\u5e26\u5bbd\u662f\u5728\u7ed9\u5b9a\u65f6\u95f4\u6bb5\u5185\u53ef\u4ee5\u4f20\u8f93\u7684\u6570\u636e\u91cf\u3002\u5c06\u5e26\u5bbd\u89c6\u4e3a\u6c34\u7ba1\u3002\u60a8\u53ea\u80fd\u5728\u8f6f\u7ba1\u4e2d\u88c5\u5165\u8fd9\u4e48\u591a\u7684\u6c34\uff0c\u7136\u540e\u5c06\u5176\u4ece\u9f99\u5934\u5c04\u5230\u5f00\u53e3\u5904\u3002\u5982\u679c\u60a8\u9700\u8981\u5728\u56fa\u5b9a\u65f6\u95f4\u5185\u8f93\u9001\u66f4\u591a\u7684\u6c34\uff0c\u5219\u9700\u8981\u6269\u5927\u8f6f\u7ba1\u7684\u5468\u957f\u3002<\/p>\n \u60a8\u7684 Web \u670d\u52a1\u5668\u53ea\u80fd\u5904\u7406\u8fd9\u4e48\u591a\u4e8b\u52a1\uff0c\u800c\u60a8\u7684\u5e26\u5bbd\u53ea\u80fd\u5bb9\u7eb3\u8fd9\u4e48\u591a\u6570\u636e\u3002\u8fd9\u4e9b\u6838\u5fc3\u7ec4\u4ef6\u662f DDoS \u653b\u51fb\u7684\u76ee\u6807\u3002<\/p>\n \u6ce8\u610f\uff1a\u4e3a\u4e86\u7b80\u5355\u8d77\u89c1\uff0c\u6211\u4eec\u4e13\u6ce8\u4e8e Web \u670d\u52a1\u5668\uff0c\u4f46 DDoS \u653b\u51fb\u53ef\u80fd\u4f1a\u53d1\u751f\u5728\u4f17\u591a\u670d\u52a1\u4e2d\uff0c\u5305\u62ec DNS\u3001DHCP\u3001\u804a\u5929\u5ba4\uff0c\u751a\u81f3\u6253\u5370\u673a\u3002<\/p>\n DoS \u7684\u65e9\u671f\u9636\u6bb5<\/span><\/p>\n \u62d2\u7edd\u670d\u52a1\u653b\u51fb\u5728 Internet \u4e0a\u5e76\u4e0d\u662f\u4ec0\u4e48\u65b0\u9c9c\u4e8b\u3002\u56de\u5230\u4e92\u8054\u7f51\u7684\u65e9\u671f\uff0c\u4e00\u4e2a\u4eba\u62e5\u6709\u4e00\u53f0\u7535\u8111\u53ef\u80fd\u4f1a\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u4e8b\u5b9e\u4e0a\uff0c\u7b2c\u4e00\u6b21 DoS \u653b\u51fb\u662f\u57281974 \u5e74\uff0c\u7531\u4e00\u540d 13 \u5c81\u7684\u4f0a\u5229\u8bfa\u4f0a\u5dde\u5b66\u751f\u521b\u5efa\u3002<\/p>\n \u65e9\u671f\u4e92\u8054\u7f51\u7684\u65e5\u5b50\u5e76\u6ca1\u6709\u5360\u7528\u592a\u591a\u7684\u8ba1\u7b97\u673a\u80fd\u529b\u6216\u5e26\u5bbd\u3002\u6211\u4eec\u73b0\u5728\u62e5\u6709\u7684\u8d44\u6e90\u548c\u5e26\u5bbd\u5728\u5f53\u65f6\u751a\u81f3\u90fd\u4e0d\u53ef\u7528\u3002\u6bcf\u6708\u6709 1000 \u540d\u8bbf\u95ee\u8005\u8bbf\u95ee\u60a8\u7684\u7f51\u7ad9\u5df2\u7ecf\u5f88\u591a\u4e86\uff0c\u800c\u5bf9 Web \u670d\u52a1\u5668\u7684\u6570\u5343\u6b21\u8c03\u7528\u5e76\u4e0d\u9700\u8981\u592a\u591a\u7684\u8ba1\u7b97\u80fd\u529b\u3002<\/p>\n 1990 \u5e74\u4ee3\u968f\u7740\u4e92\u8054\u7f51\u53d8\u5f97\u8d8a\u6765\u8d8a\u6d41\u884c\uff0c\u5176\u4e2d\u4e00\u79cd\u5e38\u89c1\u7684 DoS \u653b\u51fb\u88ab\u79f0\u4e3a\u201csmurf \u653b\u51fb\u201d\u3002\u5b83\u7684\u5de5\u4f5c\u65b9\u5f0f\u53ef\u4ee5\u8ffd\u6eaf\u5230\u4e92\u8054\u7f51\u4e0a\u7684\u4f20\u8f93\u65b9\u5f0f\u3002\u5f53\u60a8\u7684\u6d4f\u89c8\u5668\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u5b83\u4f1a\u5efa\u7acb\u201cSYN-ACK \u63e1\u624b\u201d\u3002<\/p>\n \u60a8\u7684\u6d4f\u89c8\u5668\u5411\u670d\u52a1\u5668\u53d1\u51fa SYN(\u540c\u6b65)\u8bf7\u6c42\u3002\u670d\u52a1\u5668\u63a5\u6536\u8bf7\u6c42\u5e76\u5c06 SYN-ACK(\u540c\u6b65\u786e\u8ba4)\u6d88\u606f\u53d1\u9001\u56de\u60a8\u7684\u6d4f\u89c8\u5668\u3002SYN-ACK \u6d88\u606f\u53d1\u9001\u540e\uff0c\u670d\u52a1\u5668\u7b49\u5f85\u60a8\u7684\u54cd\u5e94\u3002\u7136\u540e\uff0c\u60a8\u7684\u6d4f\u89c8\u5668\u5c06\u53e6\u4e00\u4e2a ACK\u200b\u200b(\u786e\u8ba4)\u6d88\u606f\u53d1\u9001\u56de\u670d\u52a1\u5668\u3002\u4f60\u4eec\u90fd\u5efa\u7acb\u4e86\u8fde\u63a5\uff0c\u56e0\u4e3a\u4f60\u4eec\u90fd\u540c\u6b65\u5e76\u786e\u8ba4\u4e86\u63e1\u624b\u3002\u4f60\u4eec\u90fd\u77e5\u9053\u5bf9\u65b9\u7684\u5b58\u5728\uff0c\u4e00\u65e6\u4f60\u4eec\u63e1\u624b\uff0c\u4f60\u4eec\u548c\u670d\u52a1\u5668\u90fd\u53ef\u4ee5\u4f20\u8f93\u6570\u636e\u3002<\/p>\n \u6211\u4eec\u5df2\u7ecf\u5f3a\u8c03\u4e86\u8fd9\u4e2a\u8fc7\u7a0b\u7684\u91cd\u8981\u90e8\u5206\u3002\u670d\u52a1\u5668\u7b49\u5f85\u6765\u81ea\u53d1\u9001\u65b9\u7684\u8fd4\u56de ACK\u3002\u5982\u679c\u53d1\u4ef6\u4eba\u6d88\u5931\u6216\u53d1\u4ef6\u4eba\u7684 IP \u5730\u5740\u662f\u4f2a\u9020\u7684\u4f1a\u53d1\u751f\u4ec0\u4e48?SYN-ACK 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