NetFlow\/sFlow\u5f02\u5e38\u68c0\u6d4b\uff1a\u7f51\u7edc\u6d41\u91cf\u6df1\u5ea6\u5206\u6790\u4e0e\u5b89\u5168\u9884\u8b66<\/title><\/p>\n<p><\/head><br \/>\n<body><\/p>\n<h2>NetFlow\/sFlow\u5f02\u5e38\u68c0\u6d4b\uff1a\u7f51\u7edc\u6d41\u91cf\u6df1\u5ea6\u5206\u6790\u4e0e\u5b89\u5168\u9884\u8b66<\/h2>\n<p>\u5728\u5f53\u4eca\u9ad8\u5ea6\u4e92\u8054\u7684\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u5b89\u5168\u5a01\u80c1\u65e5\u76ca\u590d\u6742\u4e14\u5c42\u51fa\u4e0d\u7a77\u3002\u4f01\u4e1a\u9700\u8981\u5b9e\u65f6\u4e86\u89e3\u7f51\u7edc\u6d41\u91cf\u72b6\u51b5\uff0c\u4ee5\u4fbf\u53ca\u65f6\u53d1\u73b0\u5e76\u5e94\u5bf9\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\u3002NetFlow \u548c sFlow 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\u90fd\u662f\u7f51\u7edc\u6d41\u91cf\u76d1\u63a7\u6280\u672f\uff0c\u5b83\u4eec\u901a\u8fc7\u4e0d\u540c\u7684\u65b9\u5f0f\u91c7\u96c6\u7f51\u7edc\u6d41\u91cf\u4fe1\u606f\uff0c\u5e76\u5c06\u5176\u5bfc\u51fa\u5230\u5206\u6790\u5668\u8fdb\u884c\u5904\u7406\u3002\u867d\u7136\u76ee\u6807\u76f8\u540c\uff0c\u4f46\u5b9e\u73b0\u65b9\u5f0f\u4e0a\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002<\/p>\n<h3>NetFlow \u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>NetFlow \u7531 Cisco \u5f00\u53d1\uff0c\u5b83\u5c06\u7f51\u7edc\u6d41\u91cf\u89c6\u4e3a\u4e00\u4e2a\u4e2a\u7684\u201c\u6d41\u201d\uff08Flow\uff09\u3002\u4e00\u4e2a\u6d41\u901a\u5e38\u7531\u4e94\u5143\u7ec4\uff08\u6e90 IP \u5730\u5740\u3001\u76ee\u7684 IP \u5730\u5740\u3001\u6e90\u7aef\u53e3\u3001\u76ee\u7684\u7aef\u53e3\u3001\u534f\u8bae\uff09\u5b9a\u4e49\u3002NetFlow \u8def\u7531\u5668\u6216\u4ea4\u6362\u673a\u8d1f\u8d23\u76d1\u63a7\u6d41\u7684\u521b\u5efa\u3001\u6301\u7eed\u65f6\u95f4\u548c\u7ec8\u6b62\uff0c\u5e76\u5b9a\u671f\u5c06\u6d41\u7684\u7edf\u8ba1\u4fe1\u606f\uff08\u5982\u6570\u636e\u5305\u6570\u91cf\u3001\u5b57\u8282\u6570\u3001\u5f00\u59cb\u65f6\u95f4\u548c\u7ed3\u675f\u65f6\u95f4\u7b49\uff09\u5bfc\u51fa\u5230 NetFlow \u6536\u96c6\u5668\u3002<\/p>\n<p><strong>\u91cd\u70b9\u5728\u4e8e\uff1a<\/strong>NetFlow \u8bbe\u5907\u53ea\u5bfc\u51fa\u6d41\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u800c\u4e0d\u6355\u83b7\u5b9e\u9645\u7684\u6570\u636e\u5305\u5185\u5bb9\u3002\u8fd9\u5927\u5927\u964d\u4f4e\u4e86\u5bf9\u7f51\u7edc\u8bbe\u5907\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u4e5f\u51cf\u5c11\u4e86\u9700\u8981\u5b58\u50a8\u7684\u6570\u636e\u91cf\u3002<\/p>\n<h3>sFlow \u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>sFlow \u91c7\u7528\u7684\u662f<strong>\u62bd\u6837<\/strong>\u6280\u672f\u3002\u5b83\u968f\u673a\u62bd\u53d6\u7f51\u7edc\u6570\u636e\u5305\uff0c\u5e76\u5c06\u62bd\u6837\u6570\u636e\u5305\u7684\u5934\u90e8\u4fe1\u606f\uff08\u5305\u542b\u6e90\u5730\u5740\u3001\u76ee\u7684\u5730\u5740\u3001\u7aef\u53e3\u7b49\uff09\u5bfc\u51fa\u5230 sFlow \u6536\u96c6\u5668\u3002sFlow \u7684\u91c7\u6837\u7387\u901a\u5e38\u662f\u56fa\u5b9a\u7684\uff0c\u4f8b\u5982\u6bcf 1000 \u4e2a\u6570\u636e\u5305\u62bd\u53d6 1 \u4e2a\u3002\u4e0e NetFlow \u76f8\u6bd4\uff0csFlow \u66f4\u52a0\u8f7b\u91cf\u7ea7\uff0c\u5bf9\u7f51\u7edc\u8bbe\u5907\u7684\u6027\u80fd\u5f71\u54cd\u66f4\u5c0f\uff0c\u4f46\u5176\u51c6\u786e\u6027\u7565\u900a\u4e00\u7b79\u3002<\/p>\n<p><strong>\u5173\u952e\u533a\u522b\uff1a<\/strong>sFlow \u76f4\u63a5\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u91c7\u6837\uff0c\u800c NetFlow \u5219\u57fa\u4e8e\u6d41\u8fdb\u884c\u7edf\u8ba1\u3002\u8fd9\u4f7f\u5f97 sFlow \u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u90e8\u7f72\u5728\u5404\u79cd\u7f51\u7edc\u8bbe\u5907\u4e0a\uff0c\u800c\u65e0\u9700\u8003\u8651\u8bbe\u5907\u662f\u5426\u652f\u6301 NetFlow \u534f\u8bae\u3002<\/p>\n<h2>NetFlow\/sFlow \u5f02\u5e38\u68c0\u6d4b\u7684\u5e94\u7528\u573a\u666f<\/h2>\n<p>NetFlow\/sFlow \u5f02\u5e38\u68c0\u6d4b\u5728\u7f51\u7edc\u5b89\u5168\u548c\u8fd0\u7ef4\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\uff0c\u4ee5\u4e0b\u5217\u4e3e\u4e00\u4e9b\u5178\u578b\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<ul>\n<li><strong>DDoS \u653b\u51fb\u68c0\u6d4b\uff1a<\/strong>\u901a\u8fc7\u5206\u6790\u6d41\u91cf\u7684\u6e90\u5730\u5740\u3001\u76ee\u7684\u5730\u5740\u548c\u6d41\u91cf\u901f\u7387\uff0c\u53ef\u4ee5\u5feb\u901f\u8bc6\u522b DDoS \u653b\u51fb\uff0c\u5e76\u91c7\u53d6\u76f8\u5e94\u7684\u9632\u5fa1\u63aa\u65bd\u3002\u4f8b\u5982\uff0c\u68c0\u6d4b\u5230\u5927\u91cf\u6765\u81ea\u5355\u4e00\u6e90 IP \u5730\u5740\u7684\u6d41\u91cf\u6d8c\u5411\u7279\u5b9a\u670d\u52a1\u5668\uff0c\u5373\u53ef\u5224\u65ad\u4e3a DDoS \u653b\u51fb\u3002<\/li>\n<li><strong>\u6076\u610f\u8f6f\u4ef6\u4f20\u64ad\u68c0\u6d4b\uff1a<\/strong>\u901a\u8fc7\u5206\u6790\u6d41\u91cf\u7684\u76ee\u7684\u5730\u5740\u3001\u7aef\u53e3\u548c\u534f\u8bae\uff0c\u53ef\u4ee5\u68c0\u6d4b\u6076\u610f\u8f6f\u4ef6\u7684\u4f20\u64ad\u884c\u4e3a\u3002\u4f8b\u5982\uff0c\u68c0\u6d4b\u5230\u5927\u91cf\u4e3b\u673a\u5c1d\u8bd5\u8fde\u63a5\u5230\u5df2\u77e5\u7684\u6076\u610f\u670d\u52a1\u5668\uff0c\u5219\u8868\u660e\u7f51\u7edc\u4e2d\u53ef\u80fd\u5b58\u5728\u6076\u610f\u8f6f\u4ef6\u3002<\/li>\n<li><strong>\u5185\u90e8\u5a01\u80c1\u68c0\u6d4b\uff1a<\/strong>\u901a\u8fc7\u76d1\u63a7\u5185\u90e8\u7528\u6237\u7684\u7f51\u7edc\u884c\u4e3a\uff0c\u53ef\u4ee5\u53d1\u73b0\u6f5c\u5728\u7684\u5185\u90e8\u5a01\u80c1\u3002\u4f8b\u5982\uff0c\u68c0\u6d4b\u5230\u5458\u5de5\u5728\u975e\u5de5\u4f5c\u65f6\u95f4\u8bbf\u95ee\u654f\u611f\u6570\u636e\uff0c\u6216\u5c06\u5927\u91cf\u6570\u636e\u4f20\u8f93\u5230\u5916\u90e8\u7f51\u7edc\uff0c\u5219\u53ef\u80fd\u5b58\u5728\u6570\u636e\u6cc4\u9732\u98ce\u9669.<\/li>\n<li><strong>\u7f51\u7edc\u6027\u80fd\u76d1\u63a7\uff1a<\/strong>\u901a\u8fc7\u5206\u6790\u6d41\u91cf\u7684\u5206\u5e03\u60c5\u51b5\uff0c\u53ef\u4ee5\u4e86\u89e3\u7f51\u7edc\u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u8fdb\u884c\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u68c0\u6d4b\u5230\u67d0\u4e2a\u94fe\u8def\u7684\u6d41\u91cf\u8d1f\u8f7d\u8fc7\u9ad8\uff0c\u5219\u53ef\u4ee5\u8003\u8651\u5347\u7ea7\u94fe\u8def\u5e26\u5bbd\u6216\u8c03\u6574\u8def\u7531\u7b56\u7565\u3002<\/li>\n<li><strong>\u5f02\u5e38\u884c\u4e3a\u8bc6\u522b\uff1a<\/strong>NetFlow\/sFlow \u6570\u636e\u53ef\u4ee5\u7528\u4e8e\u5efa\u7acb\u6b63\u5e38\u7684\u7f51\u7edc\u884c\u4e3a\u57fa\u7ebf\uff0c\u4efb\u4f55\u504f\u79bb\u57fa\u7ebf\u7684\u884c\u4e3a\u90fd\u53ef\u4ee5\u88ab\u89c6\u4e3a\u5f02\u5e38\uff0c\u4f8b\u5982\u7a81\u7136\u589e\u52a0\u7684\u52a0\u5bc6\u6d41\u91cf\uff0c\u4e0d\u5bfb\u5e38\u7684\u7aef\u53e3\u626b\u63cf\uff0c\u6216\u672a\u7ecf\u6388\u6743\u7684\u670d\u52a1\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<h2>NetFlow\/sFlow \u7684\u914d\u7f6e\u4e0e\u96c6\u6210<\/h2>\n<p>\u8981\u5b9e\u73b0 NetFlow\/sFlow \u5f02\u5e38\u68c0\u6d4b\uff0c\u9700\u8981\u8fdb\u884c\u914d\u7f6e\u548c\u96c6\u6210\u5de5\u4f5c\uff0c\u5305\u62ec\u5728\u7f51\u7edc\u8bbe\u5907\u4e0a\u542f\u7528 NetFlow\/sFlow \u5bfc\u51fa\u529f\u80fd\uff0c\u5e76\u90e8\u7f72 NetFlow\/sFlow \u6536\u96c6\u5668\u548c\u5206\u6790\u5668\u3002<\/p>\n<h3>\u7f51\u7edc\u8bbe\u5907\u914d\u7f6e<\/h3>\n<p>\u4e0d\u540c\u5382\u5546\u7684\u7f51\u7edc\u8bbe\u5907\u914d\u7f6e NetFlow\/sFlow \u7684\u65b9\u5f0f\u7565\u6709\u4e0d\u540c\uff0c\u4f46\u57fa\u672c\u6b65\u9aa4\u7c7b\u4f3c\uff1a<\/p>\n<ol>\n<li><strong>\u542f\u7528 NetFlow\/sFlow \u529f\u80fd\uff1a<\/strong>\u5728\u7f51\u7edc\u8bbe\u5907\u7684\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u4e0b\uff0c\u542f\u7528 NetFlow \u6216 sFlow \u529f\u80fd\u3002\u4f8b\u5982\uff0c\u5728 Cisco \u8def\u7531\u5668\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>ip flow-export version 9<\/code> \u547d\u4ee4\u542f\u7528 NetFlow v9\u3002<\/li>\n<li><strong>\u914d\u7f6e\u5bfc\u51fa\u76ee\u6807\uff1a<\/strong>\u6307\u5b9a NetFlow\/sFlow \u6536\u96c6\u5668\u7684 IP \u5730\u5740\u548c\u7aef\u53e3\u53f7\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>ip flow-export destination 192.168.1.10 2055<\/code> \u547d\u4ee4\u5c06 NetFlow \u6570\u636e\u5bfc\u51fa\u5230 IP \u5730\u5740\u4e3a 192.168.1.10\uff0c\u7aef\u53e3\u53f7\u4e3a 2055 \u7684\u6536\u96c6\u5668\u3002\u5bf9\u4e8e sFlow\uff0c\u9700\u8981\u914d\u7f6e\u91c7\u6837\u7387\u548c\u5bfc\u51fa\u76ee\u6807\u3002<\/li>\n<li><strong>\u914d\u7f6e\u76d1\u63a7\u63a5\u53e3\uff1a<\/strong>\u6307\u5b9a\u9700\u8981\u76d1\u63a7\u7684\u63a5\u53e3\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>ip flow ingress<\/code> \u547d\u4ee4\u5728\u63a5\u53e3\u4e0a\u542f\u7528 NetFlow \u5165\u7ad9\u76d1\u63a7\u3002<\/li>\n<\/ol>\n<p><strong>\u914d\u7f6e\u7ba1\u7406\u89d2\u5ea6\uff1a<\/strong>\u5efa\u8bae\u4f7f\u7528\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\uff08\u5982 Ansible\u3001Chef\u3001Puppet\uff09\u81ea\u52a8\u5316 NetFlow\/sFlow \u7684\u914d\u7f6e\u8fc7\u7a0b\uff0c\u786e\u4fdd\u914d\u7f6e\u7684\u4e00\u81f4\u6027\u548c\u53ef\u91cd\u590d\u6027\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u7f51\u7edc\uff0c\u624b\u52a8\u914d\u7f6e\u5bb9\u6613\u51fa\u9519\u4e14\u6548\u7387\u4f4e\u4e0b\u3002<\/p>\n<h3>NetFlow\/sFlow \u6536\u96c6\u5668\u548c\u5206\u6790\u5668<\/h3>\n<p>NetFlow\/sFlow 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sFlow\uff0c\u9700\u8981\u914d\u7f6e\u91c7\u6837\u7387\u548c\u5bfc\u51fa\u76ee\u6807\u3002<\/li>\n<li><strong>\u914d\u7f6e\u76d1\u63a7\u63a5\u53e3\uff1a<\/strong>\u6307\u5b9a\u9700\u8981\u76d1\u63a7\u7684\u63a5\u53e3\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>ip flow ingress<\/code> \u547d\u4ee4\u5728\u63a5\u53e3\u4e0a\u542f\u7528 NetFlow \u5165\u7ad9\u76d1\u63a7\u3002<\/li>\n<\/ol>\n<p><strong>\u914d\u7f6e\u7ba1\u7406\u89d2\u5ea6\uff1a<\/strong>\u5efa\u8bae\u4f7f\u7528\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\uff08\u5982 Ansible\u3001Chef\u3001Puppet\uff09\u81ea\u52a8\u5316 NetFlow\/sFlow \u7684\u914d\u7f6e\u8fc7\u7a0b\uff0c\u786e\u4fdd\u914d\u7f6e\u7684\u4e00\u81f4\u6027\u548c\u53ef\u91cd\u590d\u6027\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u7f51\u7edc\uff0c\u624b\u52a8\u914d\u7f6e\u5bb9\u6613\u51fa\u9519\u4e14\u6548\u7387\u4f4e\u4e0b\u3002<\/p>\n<h3>NetFlow\/sFlow \u6536\u96c6\u5668\u548c\u5206\u6790\u5668<\/h3>\n<p>NetFlow\/sFlow 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