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Packet Filter\uff09\u6280\u672f\u4f5c\u4e3a\u8865\u5145\u3002eBPF\u5141\u8bb8\u6211\u4eec\u5728Linux\u5185\u6838\u4e2d\u6267\u884c\u7528\u6237\u5b9a\u4e49\u7684\u7a0b\u5e8f\uff0c\u4ee5\u5904\u7406\u7f51\u7edc\u4e8b\u4ef6\u7b49\u3002\u5728\u9ad8\u5e76\u53d1\u7684\u7528\u6237\u573a\u666f\u4e0b\uff0c\u901a\u8fc7\u7f16\u5199eBPF\u7a0b\u5e8f\u5728\u5185\u6838\u7ea7\u522b\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u8fc7\u6ee4\u548c\u5904\u7406\uff0c\u5b9e\u73b0\u5bf9\u4e8eDNS\u6d41\u91cf\u6570\u636e\u7684\u91c7\u96c6\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u91c7\u96c6\u8fc7\u7a0b\u4e2d\u4e0d\u5bf9\u7f51\u7edc\u6027\u80fd\u4ea7\u751f\u663e\u8457\u5f71\u54cd\uff0c\u6211\u4eec\u5c06\u91c7\u7528\u4ee5\u4e0b\u7b56\u7565\uff1a<\/p>\n\n\n\n<p><strong>\uff081\uff09\u7ed3\u5408eBPF\u4e0e\u96f6\u62f7\u8d1d\u6280\u672f\uff1a<\/strong>\u867d\u7136libpcap\u672c\u8eab\u5df2\u7ecf\u652f\u6301\u96f6\u62f7\u8d1d\u6280\u672f\uff0c\u901a\u8fc7\u907f\u514d\u6570\u636e\u5305\u5728\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u7684\u62f7\u8d1d\uff0c\u6765\u964d\u4f4eCPU\u8d1f\u8f7d\u548c\u5185\u5b58\u6d88\u8017\uff0c\u4ece\u800c\u63d0\u9ad8\u6570\u636e\u91c7\u96c6\u6548\u7387\u3002\u4f46eBPF\u53ef\u4ee5\u5728\u5185\u6838\u7ea7\u522b\u8fdb\u4e00\u6b65\u51cf\u5c11\u6570\u636e\u5305\u5728\u7528\u6237\u7a7a\u95f4\u548c\u5185\u6838\u7a7a\u95f4\u4e4b\u95f4\u7684\u62f7\u8d1d\u3002\u901a\u8fc7eBPF\u7a0b\u5e8f\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5185\u6838\u4e2d\u76f4\u63a5\u5904\u7406DNS\u6d41\u91cf\u6570\u636e\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u6570\u636e\u91c7\u96c6\u6548\u7387\u3002<\/p>\n\n\n\n<p><strong>\uff082\uff09\u8bbe\u7f6e\u5408\u9002\u7684\u7f13\u51b2\u533a\u5927\u5c0f\u548c\u8d85\u65f6\u65f6\u95f4\uff1a<\/strong>\u6839\u636e\u7f51\u7edc\u6d41\u91cf\u60c5\u51b5\uff0c\u5408\u7406\u914d\u7f6e\u7f13\u51b2\u533a\u5927\u5c0f\u548c\u8d85\u65f6\u65f6\u95f4\uff0c\u4ee5\u51cf\u5c11\u6570\u636e\u5305\u4e22\u5931\u7684\u98ce\u9669\u3002\u540c\u65f6\uff0ceBPF\u7a0b\u5e8f\u4e5f\u53ef\u4ee5\u5bf9\u5185\u6838\u4e2d\u7684\u7f13\u51b2\u533a\u8fdb\u884c\u76d1\u63a7\u548c\u7ba1\u7406\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u6709\u6548\u4f20\u9012\u548c\u5904\u7406\u3002<\/p>\n\n\n\n<p><strong>\uff083\uff09\u5e76\u53d1\u5904\u7406\uff1a<\/strong>\u5229\u7528\u591a\u7ebf\u7a0b\u6216\u5f02\u6b65\u5904\u7406\u6280\u672f\uff0c\u5e76\u884c\u5904\u7406\u6355\u83b7\u5230\u7684\u6570\u636e\u5305\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u6570\u636e\u91c7\u96c6\u901f\u5ea6\u3002\u540c\u65f6\uff0ceBPF\u7a0b\u5e8f\u4e5f\u53ef\u4ee5\u5728\u5185\u6838\u7ea7\u522b\u5e76\u53d1\u6267\u884c\uff0c\u4ee5\u63d0\u9ad8\u6574\u4e2a\u7cfb\u7edf\u7684\u541e\u5410\u91cf\u548c\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n\n\n\n<p>\u603b\u7684\u6765\u8bf4\uff0ceBPF\u5728\u5185\u6838\u7ea7\u522b\u7684\u5904\u7406\u80fd\u529b\u5c06\u8fdb\u4e00\u6b65\u63d0\u5347\u6570\u636e\u91c7\u96c6\u7684\u6027\u80fd\uff0c\u800clibpcap\u7684\u5e7f\u6cdb\u9002\u7528\u6027\u548c\u6613\u7528\u6027\u5219\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u6355\u83b7\u548c\u5206\u6790\u80fd\u529b\u3002\u4e24\u8005\u5728\u4e0d\u540c\u7528\u6237\u573a\u666f\u4e0b\u7075\u6d3b\u4f7f\u7528\uff0c\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a\u5f3a\u5927\u4e14\u9ad8\u6548\u7684\u5b9e\u65f6DNS\u6d41\u91cf\u6570\u636e\u91c7\u96c6\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u91c7\u96c6\u9636\u6bb5\uff0c\u6211\u4eec\u8fd8\u5c06\u5173\u6ce8\u7528\u6237\u9690\u79c1\u4fdd\u62a4\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u5c06\u5bf9\u6355\u83b7\u5230\u7684DNS\u6d41\u91cf\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u5904\u7406\uff0c\u4ee5\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u548c\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u5bf9\u91c7\u96c6\u5230\u7684DNS\u6d41\u91cf\u6570\u636e\u8fdb\u884c\u9884\u5904\u7406\u3002\u9884\u5904\u7406\u64cd\u4f5c\u5305\u62ec\u6570\u636e\u6e05\u6d17\u3001\u53bb\u91cd\u3001\u683c\u5f0f\u5316\u7b49\u3002\u4e3a\u4e86\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u6e05\u6d17\u548c\u53bb\u91cd\uff0c\u6211\u4eec\u5c06\u91c7\u7528\u4ee5\u4e0b\u7b97\u6cd5\uff1a<\/p>\n\n\n\n<p><strong>\uff081\uff09\u4f7f\u7528\u54c8\u5e0c\u8868\u8fdb\u884c\u6570\u636e\u53bb\u91cd\uff1a<\/strong>\u901a\u8fc7\u8ba1\u7b97\u6570\u636e\u5305\u7684\u54c8\u5e0c\u503c\uff0c\u5c06\u5177\u6709\u76f8\u540c\u54c8\u5e0c\u503c\u7684\u6570\u636e\u5305\u89c6\u4e3a\u91cd\u590d\u6570\u636e\uff0c\u4ece\u800c\u5b9e\u73b0\u5feb\u901f\u53bb\u91cd\u3002<\/p>\n\n\n\n<p><strong>\uff082\uff09\u5229\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u53d6\u5173\u952e\u4fe1\u606f\uff1a<\/strong>\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914dDNS\u6d41\u91cf\u6570\u636e\u4e2d\u7684\u57df\u540d\u3001IP\u5730\u5740\u7b49\u4fe1\u606f\uff0c\u4ee5\u4fbf\u4e8e\u540e\u7eed\u5206\u6790\u3002<\/p>\n\n\n\n<p>\u5728\u5bf9DNS\u6d41\u91cf\u6570\u636e\u8fdb\u884c\u683c\u5f0f\u5316\u65f6\uff0c\u6211\u4eec\u5c06\u7edf\u4e00\u91c7\u7528JSON\u683c\u5f0f\uff0c\u4ee5\u4fbf\u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= \u539f\u59cb\u6570\u636e\u96c6 - \u91cd\u590d\u6570\u636e\u96c6 - \u7f3a\u5931\u6570\u636e\u96c6<\/p>\n\n\n\n<p><strong>\uff084\uff09\u4f7f\u7528Elasticsearch\u5b58\u50a8\u6570\u636e\uff1a<\/strong>Elasticsearch\u662f\u4e00\u4e2a\u9ad8\u5ea6\u53ef\u6269\u5c55\u7684\u5f00\u6e90\u641c\u7d22\u5f15\u64ce\uff0c\u9002\u7528\u4e8e\u5b58\u50a8\u548c\u68c0\u7d22\u5927\u91cf\u6570\u636e\u3002\u6211\u4eec\u5c06\u4f7f\u7528Elasticsearch\u4f5c\u4e3a\u5a01\u80c1\u60c5\u62a5\u6570\u636e\u7684\u5b58\u50a8\u540e\u7aef\uff0c\u4ee5\u4fbf\u5feb\u901f\u67e5\u8be2\u548c\u5206\u6790\u3002<\/p>\n\n\n\n<p><strong>\uff085\uff09\u6570\u636e\u6574\u5408\u4e0e\u5206\u6790\uff1a<\/strong>\u6211\u4eec\u5c06\u4f7f\u7528Python\u7684scikit-learn\u5e93\u5bf9\u6574\u5408\u540e\u7684\u5a01\u80c1\u60c5\u62a5\u6570\u636e\u8fdb\u884c\u805a\u7c7b\u5206\u6790\uff0c\u4ee5\u4fbf\u53d1\u73b0\u6f5c\u5728\u7684\u5173\u8054\u548c\u6a21\u5f0f\u3002\u805a\u7c7b\u5206\u6790\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u805a\u7c7b\u7ed3\u679c = KMeans(n_clusters=k).fit_predict(\u7279\u5f81\u77e9\u9635)<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0cn_clusters\u8868\u793a\u805a\u7c7b\u7684\u6570\u91cf\uff0ck\u8868\u793a\u9884\u671f\u7684\u805a\u7c7b\u6570\u91cf\uff0c\u7279\u5f81\u77e9\u9635\u8868\u793a\u5a01\u80c1\u60c5\u62a5\u6570\u636e\u7684\u7279\u5f81\u5411\u91cf\u3002<\/p>\n\n\n\n<p><strong>\uff086\uff09\u6570\u636e\u66f4\u65b0\u548c\u7ef4\u62a4\uff1a<\/strong>\u6211\u4eec\u5c06\u4f7f\u7528Python\u7684schedule\u5e93\u8bbe\u7f6e\u5b9a\u65f6\u4efb\u52a1\uff0c\u4ee5\u5b9a\u671f\u81ea\u52a8\u66f4\u65b0\u5a01\u80c1\u60c5\u62a5\u6570\u636e\u3002\u540c\u65f6\uff0c\u6211\u4eec\u5c06\u5bc6\u5207\u5173\u6ce8\u5a01\u80c1\u60c5\u62a5\u6765\u6e90\u7684\u52a8\u6001\u53d8\u5316\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u5bf9\u6570\u636e\u8fdb\u884c\u624b\u52a8\u4fee\u6b63\u548c\u8c03\u6574\u3002<\/p>\n\n\n\n<p><strong>\uff087\uff09\u6570\u636e\u5171\u4eab\u548c\u4ea4\u6362\uff1a<\/strong>\u4e3a\u4e86\u4fc3\u8fdb\u5b89\u5168\u793e\u533a\u7684\u534f\u4f5c\u9632\u5fa1\uff0c\u6211\u4eec\u5c06\u79ef\u6781\u53c2\u4e0e\u884c\u4e1a\u5171\u4eab\u9879\u76ee\uff0c\u5e76\u901a\u8fc7\u5b89\u5168\u4fe1\u606f\u4ea4\u6362\u534f\u8bae\uff08SIEM\uff09\u4e0e\u5176\u4ed6\u7ec4\u7ec7\u5171\u4eab\u5a01\u80c1\u60c5\u62a5\u6570\u636e\u3002<\/p>\n\n\n\n<p><strong>3.\u667a\u80fd\u5206\u6790<\/strong><\/p>\n\n\n\n<p>\u7ed3\u5408\u5a01\u80c1\u60c5\u62a5\u6570\u636e\uff0c\u5bf9\u5904\u7406\u540e\u7684DNS\u6d41\u91cf\u8fdb\u884c\u6df1\u5165\u5206\u6790\uff0c\u8bc6\u522b\u6f5c\u5728\u7684\u6076\u610f\u57df\u540d\u548c\u653b\u51fb\u884c\u4e3a\u3002\u8be5\u6a21\u5757\u91c7\u7528\u673a\u5668\u5b66\u4e60\u548c\u4eba\u5de5\u667a\u80fd\u6280\u672f\uff0c\u4ee5\u63d0\u9ad8\u5206\u6790\u7684\u51c6\u786e\u6027\u548c\u6548\u7387\u3002<\/p>\n\n\n\n<p><strong>\uff081\uff09\u7279\u5f81\u63d0\u53d6\uff1a<\/strong><\/p>\n\n\n\n<p>\u5229\u7528pandas\u5e93\u4ece\u5904\u7406\u540e\u7684DNS\u6d41\u91cf\u4e2d\u63d0\u53d6\u5173\u952e\u7279\u5f81\uff0c\u5982\u57df\u540d\u8bf7\u6c42\u9891\u7387\u3001\u8bf7\u6c42\u65f6\u95f4\u95f4\u9694\u3001\u57df\u540d\u4e0eIP\u5730\u5740\u7684\u6620\u5c04\u5173\u7cfb\u7b49\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528scikit-learn\u5e93\u4e2d\u7684TF-IDF\u7b97\u6cd5\u5bf9\u57df\u540d\u548cIP\u5730\u5740\u8fdb\u884c\u5411\u91cf\u5316\u5904\u7406\uff0c\u4ee5\u6355\u6349\u6076\u610f\u884c\u4e3a\u7684\u7ec6\u5fae\u8ff9\u8c61\u3002<\/p>\n\n\n\n<p><strong>\uff082\uff09\u6a21\u578b\u8bad\u7ec3\uff1a<\/strong><\/p>\n\n\n\n<p>\u6536\u96c6\u5e76\u6807\u6ce8\u4e00\u5b9a\u6570\u91cf\u7684\u6076\u610f\u57df\u540d\u548c\u6b63\u5e38\u57df\u540d\u7684DNS\u6d41\u91cf\u6837\u672c\uff0c\u6784\u5efa\u8bad\u7ec3\u6570\u636e\u96c6\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528scikit-learn\u5e93\u4e2d\u7684\u652f\u6301\u5411\u91cf\u673a\uff08SVM\uff09\u7b97\u6cd5\u5bf9\u8bad\u7ec3\u6570\u636e\u96c6\u8fdb\u884c\u8bad\u7ec3\uff0c\u5f97\u5230\u5206\u7c7b\u6a21\u578b\u3002SVM\u6a21\u578b\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>f(x) = wx + b<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0cw\u8868\u793a\u6743\u91cd\u5411\u91cf\uff0cx\u8868\u793a\u8f93\u5165\u7279\u5f81\u5411\u91cf\uff0cb\u8868\u793a\u504f\u7f6e\u9879\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u4ea4\u53c9\u9a8c\u8bc1\u548c\u7f51\u683c\u641c\u7d22\u7b49\u6280\u672f\uff0c\u5bf9\u6a21\u578b\u8fdb\u884c\u8c03\u4f18\uff0c\u4ee5\u63d0\u9ad8\u5176\u6cdb\u5316\u80fd\u529b\u548c\u51c6\u786e\u6027\u3002<\/p>\n\n\n\n<p><strong>\uff083\uff09\u6076\u610f\u57df\u540d\u68c0\u6d4b\uff1a<\/strong><\/p>\n\n\n\n<p>\u5c06\u5904\u7406\u540e\u7684DNS\u6d41\u91cf\u8f93\u5165\u5230\u8bad\u7ec3\u597d\u7684SVM\u5206\u7c7b\u6a21\u578b\u4e2d\uff0c\u5bf9\u57df\u540d\u8fdb\u884c\u6076\u610f\u6027\u5224\u65ad\u3002\u5bf9\u4e8e\u88ab\u5224\u5b9a\u4e3a\u6076\u610f\u7684\u57df\u540d\uff0c\u8fdb\u4e00\u6b65\u5206\u6790\u5176\u5173\u8054\u7684IP\u5730\u5740\u548c\u901a\u4fe1\u884c\u4e3a\uff0c\u4ee5\u8bc6\u522b\u6f5c\u5728\u7684\u653b\u51fb\u884c\u4e3a\u3002<\/p>\n\n\n\n<p><strong>\uff084\uff09\u653b\u51fb\u884c\u4e3a\u8bc6\u522b\uff1a<\/strong><\/p>\n\n\n\n<p>\u5229\u7528TensorFlow\u5e93\u6784\u5efa\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\uff0c\u5982\u5faa\u73af\u795e\u7ecf\u7f51\u7edc\uff08RNN\uff09\u6216\u957f\u77ed\u671f\u8bb0\u5fc6\u7f51\u7edc\uff08LSTM\uff09\uff0c\u5bf9DNS\u6d41\u91cf\u4e2d\u7684\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u8fdb\u884c\u5efa\u6a21\u548c\u5206\u6790\uff0c\u4ee5\u8bc6\u522b\u5f02\u5e38\u6a21\u5f0f\u548c\u653b\u51fb\u884c\u4e3a\u3002RNN\u6a21\u578b\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>h_t = f(Wx_t + Uh_{t-1} + 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