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\n\u7576tcp\/ip\u7684\u7dda\u7a0b\u4e00\u591a\uff0c\u5c31\u6703\u7522\u751f\u932f\u8aa4\u8a0a\u606f\u3002<\/strong><\/p>\n
\n\u85c9\u7531\u5728os\u88e1\u89c0\u5bdftcp\/ip\u9023\u7dda\u6642\uff0c\u767c\u73fe\u5728centos\u4e2d\uff0c
\n\u6709\u9650\u5236tcp\/ip\u7684\u55ae\u4e00IP\u9023\u7dda\u6578\uff0c\u7576\u9054\u5230\u4e00\u500b\u7dda\u7a0b\u6642\uff0c
\n\u6703\u5224\u65b7\u662f\u4e00\u7a2eSync Flood\u653b\u64ca\uff0c\u56e0\u6b64\u7cfb\u7d71\u6703\u81ea\u52d5\u64cb\u4e0b\u9023\u7dda\uff0c
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\nvim \/etc\/sysctl.conf<\/code>
\n\u4fee\u6539<\/code>
\n net.ipv4.tcp_tw_reuse = 1<\/code>
\nnet.ipv4.tcp_tw_recycle = 1
\nnet.nf_conntrack_max=6553600<\/span> <\/code>
\n\u4e26\u5728\u91cd\u958b\u3002
\n<\/code>
\n\u5f8c\u4f86\u5c31\u6c92\u6709\u6301\u7e8c\u6027\u7684\u963b\u64cb\u9023\u7dda\uff0c
\n\u4e0d\u904e\u8dd1\u4e86\u6578\u5c0f\u6642\u5f8c\uff0c\u767c\u73fe\u9084\u662f\u6703\u6709\u5076\u767c\u7684\u963b\u64cb\u72c0\u6cc1\u3002
\n(\u4ee5\u4e0a\u53c3\u6578\uff0c\u9700\u8996\u5be6\u969b\u60c5\u6cc1\u4fee\u6539)<\/span><\/p>\n
\n\u5728centos\u4e2d\uff0c\u9664sysctl\u7b49\u5176\u4ed6\u53c3\u6578\u4e4b\u5916\uff0c\u6703\u5f71\u97ff\u9023\u7dda\u7684\u8edf\u9ad4\uff0c
\n\u9084\u6709\u5167\u5efaiptables\uff0c\u5982\u679crules\u6c92\u6709\u91cd\u65b0\u5beb\uff0c\u4ed6\u6703\u767c\u63ee\u9810\u8a2d\u7684\u4e00\u4e9b\u4f5c\u7528\uff0c
\n\u6240\u4ee5\u6211\u5011\u53c8\u8a66\u8457\u4fee\u6539iptables\uff0c\u8b93Sync Flood\u9632\u8b77\u4e0d\u6703\u96a8\u610f\u88ab\u89f8\u767c\uff0c
\n\u6539\u5b8c\u4e4b\u5f8c\uff0c\u679c\u7136\u53ef\u4ee5\u6490\u5230\u4e00\u5929\u4ee5\u4e0a\u90fd\u6c92\u51fa\u73feerror\u4e86\u3002<\/p>\n
\n\u4e0d\u904e\u9019\u6a23\u7684\u4fee\u6539\uff0c\u5176\u5be6\u662f\u5c07\u5b89\u5168\u6027\u964d\u5230\u6700\u4f4e\uff0c
\n\u6709\u6642\u9019\u6a23\u8655\u7406\uff0c\u89e3\u6c7a\u4e86\u73fe\u5728\u7684\u554f\u984c\uff0c
\n\u4f46\u662f\u5982\u679c\u9047\u5230\u653b\u64ca<\/a>\uff0c\u53ef\u80fd\u5f97\u8981\u6709\u56e0\u61c9\u65b9\u5f0f\u3002<\/p>\n
\n\u529f\u80fd\u5b8c\u6574\u4f7f\u7528\u4e0d\u53d7\u9650\u5236\uff0c\u6b61\u8fce\u9ede\u6211<\/a>\u7533\u8acb\u3002<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"