{"id":77525,"date":"2024-01-15T23:31:54","date_gmt":"2024-01-15T15:31:54","guid":{"rendered":"\/\/www.viralrail.com\/?p=77525"},"modified":"2024-01-15T23:31:54","modified_gmt":"2024-01-15T15:31:54","slug":"tcp-fin-ack","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/77525.html","title":{"rendered":"TCP FIN ACK"},"content":{"rendered":"
\u672c\u6587\u4ecb\u7ecdTCP\u8fde\u63a5\u4e2d\u7684FIN\u548cACK\u6807\u5fd7\uff0c\u4ee5\u53ca\u5b83\u4eec\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\u3002\u901a\u8fc7\u6df1\u5165\u4e86\u89e3TCP FIN ACK\uff0c\u60a8\u5c06\u66f4\u597d\u5730\u7406\u89e3\u6570\u636e\u4f20\u8f93\u4e2d\u7684\u5173\u95ed\u8fc7\u7a0b\u548c\u786e\u4fdd\u901a\u4fe1\u5b89\u5168\u6027\u7684\u91cd\u8981\u673a\u5236\u3002<\/p>\n
TCP\uff08Transmission Control Protocol\uff09\u662f\u4e92\u8054\u7f51\u4e0a\u5e94\u7528\u6700\u5e7f\u6cdb\u7684\u4e00\u79cd\u4f20\u8f93\u5c42\u534f\u8bae\u3002\u5728TCP\u8fde\u63a5\u7684\u5173\u95ed\u8fc7\u7a0b\u4e2d\uff0cFIN\u548cACK\u6807\u5fd7\u626e\u6f14\u4e86\u91cd\u8981\u7684\u89d2\u8272\u3002<\/p>\n
\u5f53\u4e00\u65b9\u60f3\u8981\u5173\u95ed\u8fde\u63a5\u65f6\uff0c\u5b83\u4f1a\u53d1\u9001\u4e00\u4e2a\u5e26\u6709FIN\u6807\u5fd7\u7684TCP\u62a5\u6587\u6bb5\uff0c\u8868\u660e\u5b83\u5df2\u7ecf\u5b8c\u6210\u6570\u636e\u7684\u53d1\u9001\u3002\u8fd9\u4e2aFIN\u62a5\u6587\u6bb5\u4f1a\u8fdb\u5165\u201c\u534a\u5173\u95ed\u201d\u72b6\u6001\uff0c\u8868\u793a\u53d1\u9001\u65b9\u4e0d\u518d\u53d1\u9001\u6570\u636e\uff0c\u4f46\u4ecd\u80fd\u63a5\u6536\u6570\u636e\u3002<\/p>\n
\u63a5\u6536\u5230\u5e26\u6709FIN\u6807\u5fd7\u7684TCP\u62a5\u6587\u6bb5\u540e\uff0c\u63a5\u6536\u65b9\u4f1a\u53d1\u9001\u5e26\u6709ACK\u6807\u5fd7\u7684\u786e\u8ba4\u62a5\u6587\u6bb5\uff0c\u8868\u793a\u5df2\u7ecf\u63a5\u6536\u5230\u4e86\u5173\u95ed\u8bf7\u6c42\u3002\u8fd9\u6837\uff0c\u53cc\u65b9\u5b8c\u6210\u4e86\u6570\u636e\u4f20\u8f93\u7684\u5173\u95ed\u8fc7\u7a0b\u3002<\/p>\n
\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d\uff0c\u786e\u4fdd\u8fde\u63a5\u7684\u5b89\u5168\u5173\u95ed\u5bf9\u4e8e\u9632\u6b62\u6570\u636e\u6cc4\u9732\u548c\u6076\u610f\u653b\u51fb\u81f3\u5173\u91cd\u8981\u3002TCP FIN ACK\u5728\u8fd9\u65b9\u9762\u53d1\u6325\u4e86\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n
\u5982\u679c\u8fde\u63a5\u91ca\u653e\u8fc7\u7a0b\u4e0d\u5b89\u5168\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u88ab\u7a83\u53d6\u6216\u7be1\u6539\u3002\u4f7f\u7528TCP FIN ACK\u673a\u5236\u53ef\u4ee5\u786e\u4fdd\u8fde\u63a5\u5728\u5173\u95ed\u8fc7\u7a0b\u4e2d\u7684\u5b89\u5168\u6027\uff0c\u9632\u6b62\u4e0d\u660e\u8eab\u4efd\u7684\u7f51\u7edc\u8282\u70b9\u4ecb\u5165\u653b\u51fb\u3002<\/p>\n
\u901a\u8fc7\u5408\u7406\u5229\u7528TCP FIN ACK\uff0c\u53ef\u4ee5\u9632\u8303\u62d2\u7edd\u670d\u52a1\uff08DoS\uff09\u653b\u51fb\uff0c\u786e\u4fdd\u7f51\u7edc\u670d\u52a1\u7684\u6b63\u5e38\u8fd0\u884c\u548c\u8fde\u63a5\u7684\u53ef\u9760\u5173\u95ed\u3002<\/p>\n
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