{"id":2612,"date":"2024-03-20T00:48:19","date_gmt":"2024-03-19T16:48:19","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=2612"},"modified":"2024-03-20T00:48:19","modified_gmt":"2024-03-19T16:48:19","slug":"%e6%8f%a1%e6%89%8b%e5%8c%8543tcp%e4%b8%89%e6%ac%a1%e6%8f%a1%e6%89%8b%e5%bb%ba%e7%ab%8b%e8%bf%9e%e6%8e%a5%e7%9a%84%e8%bf%875486","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/20\/%e6%8f%a1%e6%89%8b%e5%8c%8543tcp%e4%b8%89%e6%ac%a1%e6%8f%a1%e6%89%8b%e5%bb%ba%e7%ab%8b%e8%bf%9e%e6%8e%a5%e7%9a%84%e8%bf%875486\/","title":{"rendered":"\u63e1\u624b\u5305 43.TCP\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\u7684\u8fc7\u7a0b"},"content":{"rendered":"<div>\n<p>\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 <strong><a href=\"https:\/\/ccwifi.cc\" target=\"_blank\" rel=\"noopener\">\u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n<p>\u5404\u4f4d\u597d \u53c8\u89c1\u9762\u4e86 \u6211\u662f\u66f9\u64cd \u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u65b0\u7684\u6559\u7a0b<\/p>\n<p>\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n<pre>IP______________________________________________________________.\n|version|  ihl   |      tos       |            totlen                   |\n|___4___|___5___ |____0x00=0_____ |___________0x0028=40___________      |\n|                  id               |r|D|M|       offsetfrag            |\n|____________0x2262=8802________|0|0|0|________0x0000=0_________        |\n|           ttl  |      protocol  |           checksum                  |\n|_____0x80=128___|______0x06=6____|____________ 0x2013__________        |\n|                                 source                                |\n|__________________________192.168.59.131_________________________      |\n|                                destination                            |\n|__________________________192.168.59.135_________________________      |\nTCP_____________________________________________________________.\n|               source port       |           destination port          |\n|____________0x01BB=443__________ |__________0x1F90=8080__________      |\n|                                 seqnum                                |\n|_____________________ 0xA97F8D14=2843708692_____________________       |\n|                                 acknum                                |\n|_________________________0x00000000=0__________________________        |\n| doff | r | r | r | r | C | E | U | A | P | R | S | F|   window        |\n|_ 5_| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0|______0x05DC=1500______|\n|              checksum           |            urgptr                   |\n|___________0x59CC=22988___________|__________0x0000=0__________        |<\/pre>\n<p>TCP\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u534f\u8bae\uff0c\u6bcf\u6b21\u8bf7\u6c42\u90fd\u9700\u8981\u5bf9\u65b9\u786e\u8ba4\u3002\u4e3a\u4e86\u5efa\u7acb\u8fde\u63a5\uff0cTCP\u5ba2\u6237\u7aef\u548cTCP\u670d\u52a1\u5668\u9700\u8981\u8fdb\u884c\u4e09\u6b21\u63e1\u624b\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u4e09\u6b21\u63e1\u624b\u7684\u8fc7\u7a0b\u3002<\/p>\n<p>\u7b2c\u4e00\u6b21\u63e1\u624b\uff1a\u5728\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2aSYN\u62a5\u6587\uff08SEQ=x\uff0cSYN=1\uff09\uff0c\u5e76\u8fdb\u5165SYN_SENT\u72b6\u6001\uff0c\u7b49\u5f85\u670d\u52a1\u5668\u7684\u786e\u8ba4\u3002<\/p>\n<p>\u7b2c\u4e8c\u6b21\u63e1\u624b\uff1a\u5b9e\u9645\u4e0a\uff0c\u7b2c\u4e8c\u6b21\u63e1\u624b\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\uff0c\u5373SYN+ACK\uff08\u8bf7\u6c42\u548c\u786e\u8ba4\uff09\u62a5\u6587\u3002<\/p>\n<p>\u7b2c\u4e09\u6b21\u63e1\u624b\uff1a\u7b2c\u4e09\u6b21\u63e1\u624b\u662f\u5ba2\u6237\u7aef\u6536\u5230\u670d\u52a1\u5668\u7684\u56de\u590d\uff08SYN+ACK\u62a5\u6587\uff09\u3002\u6b64\u65f6\uff0c\u5ba2\u6237\u7aef\u4e5f\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a\u786e\u8ba4\u5305\uff08ACK\uff09\u3002\u5b8c\u6210\u8fd9\u4e09\u6b21\u63e1\u624b\u540e\uff0c\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u8fdb\u5165\u5df2\u5efa\u7acb\u8fde\u63a5\u7684\u72b6\u6001\u3002<\/p>\n<p>\u5728\u63e1\u624b\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e2a\u6807\u5fd7\u4f4d\u7684\u503c\u662f\u4e0d\u540c\u7684\u3002\u4e3a\u4e86\u66f4\u597d\u5730\u5206\u6790\u6bcf\u4e2a\u6807\u5fd7\u4f4d\u5728\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\u4e2d\u7684\u53d8\u5316\uff0c\u53ef\u4ee5\u4f7f\u7528Wireshark\u5de5\u5177\u6765\u6355\u83b7TCP\u8fde\u63a5\u7684\u6570\u636e\u5305\u5e76\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p>\u901a\u8fc7\u6293\u5305\u5206\u6790\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u6e90IP\u5730\u5740\u3001\u76ee\u6807IP\u5730\u5740\u4ee5\u53caTCP\u62a5\u6587\u4e2d\u7684\u6807\u5fd7\u4f4d\u3002\u901a\u8fc7\u6784\u9020TCP\u4e09\u6b21\u63e1\u624b\u6570\u636e\u5305\uff0c\u53ef\u4ee5\u4f2a\u9020\u8fde\u63a5\u6307\u5b9a\u7aef\u53e3\u6216\u4f7f\u7528\u672a\u542f\u7528\u7684\u7aef\u53e3\u56de\u590d\u8fde\u63a5\uff0c\u4ee5\u5e72\u6270\u8fde\u63a5\u8005\u7684\u5224\u65ad\u3002<\/p>\n<p>\u6784\u9020\u4e09\u6b21\u63e1\u624b\u6570\u636e\u5305\u53ef\u4ee5\u4f7f\u7528netwox\u5de5\u5177\u4e2d\u7684\u7f16\u53f742\u6a21\u5757\u3002\u4f8b\u5982\uff0c\u5df2\u77e5\u4e3b\u673aA\u7684IP\u5730\u5740\u4e3a192.168.59.131\uff0c\u7aef\u53e3443\u5904\u4e8e\u5f00\u653e\u72b6\u6001\uff0c\u4e3b\u673aB\u7684IP\u5730\u5740\u4e3a192.168.59.135\uff0c\u7aef\u53e38080\u5904\u4e8e\u5f00\u653e\u72b6\u6001\u3002\u53ef\u4ee5\u901a\u8fc7\u4e3b\u673aA\u8fde\u63a5\u4e3b\u673aB\uff0c\u5e76\u6784\u9020\u4e09\u6b21\u63e1\u624b\u3002<\/p>\n<p>\u901a\u8fc7\u6293\u5305\u9a8c\u8bc1\uff0c\u53ef\u4ee5\u786e\u8ba4\u6210\u529f\u6784\u9020\u4e86\u7b2c\u4e00\u6b21\u548c\u7b2c\u4e8c\u6b21\u63e1\u624b\u5305\u3002\u5982\u679c\u6784\u9020\u7684\u63e1\u624b\u5305\u8fde\u63a5\u7684\u662f\u4e3b\u673aB\u672a\u5f00\u653e\u7684\u7aef\u53e3\uff0c\u5c06\u4e0d\u4f1a\u6536\u5230\u5bf9\u5e94\u7684\u7b2c\u4e8c\u6b21\u63e1\u624b\u5305\u3002\u4e3a\u4e86\u5e72\u6270\u5224\u65ad\uff0c\u53ef\u4ee5\u5728\u4e3b\u673aB\u4e0a\u6784\u9020\u7b2c\u4e8c\u6b21\u63e1\u624b\u5305\uff0c\u4f7f\u4e3b\u673aA\u8ba4\u4e3a\u4e3b\u673aB\u4e0a\u7684\u7aef\u53e3\u662f\u5f00\u653e\u7684\u3002<\/p>\n<p>\u6700\u540e\uff0c\u5728\u4e3b\u673aA\u4e0a\u6784\u9020\u7b2c\u4e09\u6b21\u63e1\u624b\u5305\uff0c\u5b8c\u6210\u4e09\u6b21\u63e1\u624b\u3002\u901a\u8fc7\u6293\u5305\u9a8c\u8bc1\uff0c\u53ef\u4ee5\u786e\u8ba4\u6210\u529f\u6784\u9020\u4e86\u7b2c\u4e09\u6b21\u63e1\u624b\u5305\u3002<\/p>\n<p>\u4ee5\u4e0a\u662f\u5173\u4e8eTCP\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\u7684\u8be6\u7ec6\u89e3\u91ca\u548c\u6784\u9020\u63e1\u624b\u6570\u636e\u5305\u7684\u793a\u4f8b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63e1\u624b\u5305\u63e1\u624b\u5305 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