{"id":91381,"date":"2020-05-01T23:46:37","date_gmt":"2020-05-01T15:46:37","guid":{"rendered":"http:\/\/4563.org\/?p=91381"},"modified":"2020-05-01T23:46:37","modified_gmt":"2020-05-01T15:46:37","slug":"%e5%9c%a8%e5%88%86%e6%9e%90-ddos-%e6%94%bb%e5%87%bb%e7%9a%84%e6%b5%81%e9%87%8f%e6%83%85%e5%86%b5%e6%97%b6%e5%8f%91%e7%8e%b0%e4%b8%80%e4%b8%aa%e9%97%ae%e9%a2%98%ef%bc%8c%e6%87%82%e7%9a%84%e5%a4%a7","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=91381","title":{"rendered":"\u5728\u5206\u6790 ddos \u653b\u51fb\u7684\u6d41\u91cf\u60c5\u51b5\u65f6\u53d1\u73b0\u4e00\u4e2a\u95ee\u9898\uff0c\u61c2\u7684\u5927\u4f6c\u8fdb\u6765\u5750\u5750"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u5728\u5206\u6790 ddos \u653b\u51fb\u7684\u6d41\u91cf\u60c5\u51b5\u65f6\u53d1\u73b0\u4e00\u4e2a\u95ee\u9898\uff0c\u61c2\u7684\u5927\u4f6c\u8fdb\u6765\u5750\u5750               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : dapengzhao <\/span>  <span><i><\/i> 27<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u80cc\u666f\uff1a \u516c\u53f8\u670d\u52a1\u5668\u6d41\u91cf\u53d1\u73b0 ddos syn \u534a\u8fde\u63a5\u653b\u51fb\u3002<\/p>\n<p>\u8bf4\u660e\uff1a ddos syn \u534a\u8fde\u63a5\u653b\u51fb\uff0c\u662f\u5229\u7528 tcp \u4e09\u6b21\u63e1\u624b\uff0c\u653b\u51fb\u6e90\u5411\u76ee\u6807\u670d\u52a1\u5668\u53d1\u9001\u5927\u91cf syn \u6570\u636e\u5305\uff0c\u5728\u63a5\u6536\u7684 ack+syn \u5305\u540e\uff0c\u4e0d\u8fd4\u56de ack \u5305\u7684\u60c5\u51b5\uff0c\u5bfc\u81f4\u76ee\u6807\u670d\u52a1\u5668\u5927\u91cf\u8d44\u6e90\u88ab\u5360\u7528\u3002<\/p>\n<p>\u6211\u7684\u6392\u67e5\uff1a<\/p>\n<pre><code>     \u73b0\u5728\u60f3\u627e\u51fa\u5728\u4eca\u5e74\u4e00\u6708\u4e00\u53f7\u90a3\u5929\u53d1\u8d77\u653b\u51fb\u7684 ip \u5730\u5740\uff0c\u901a\u8fc7\u67e5\u627e netflow \u6d41\u91cf\u6570\u636e\u5206\u6790\u3002         1. \u4f7f\u7528\u8fc7\u6ee4\u6761\u4ef6'flags S' -A srcip -O packets\uff0c\u628a\u53d1\u9001 syn \u5305\u6700\u591a\u7684 ip \u6392\u5e8f\uff08\u5982\u6700\u591a\u7684\u5730\u5740\uff1a1.1.1.1 \uff09         2. \"src ip 1.1.1.1 and flags A\" -o \"fmt:%flg\"'\u3002\u770b\u770b\u8fd9\u4e2a ip \u53d1\u9001\u4e86\u51e0\u4e2a ack \u6570\u636e\u5305         3.\u901a\u8fc7\u5224\u65ad syn \u6570\u636e\u5305\u548c ack \u6570\u636e\u5305\u7684\u6bd4\u4f8b\u5224\u65ad\u662f\u4e0d\u662f\u653b\u51fb ip <\/code><\/pre>\n<p>\u7591\u95ee\uff1a \u5728\u8fd0\u884c\u4e86\u8fd9\u4e00\u5929\u7684 netflow \u6570\u636e\u540e\uff0c\u53d1\u73b0\u673a\u4f1a\u6ca1\u6709 syn \u6570\u636e\u5305\u548c ack \u6570\u636e\u5305\u5927\u81f4\u76f8\u7b49\u7684 ip\uff0c\u8981\u4e48\u662f syn \u6570\u91cf\u8fdc\u5927\u4e8e ack\uff0c \u8981\u4e48\u662f ack \u6570\u91cf\u8fdc\u5927\u4e8e syn \u3002\u4e0d\u660e\u767d\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff0c\u9664\u975e\u8fd9\u4e9b ip \u90fd\u4e0d\u6b63\u5e38\u3002<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>0<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5206\u6790 ddos \u653b\u51fb\u7684\u6d41\u91cf\u60c5\u51b5\u65f6&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/91381"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=91381"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/91381\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=91381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=91381"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=91381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}