{"id":3948,"date":"2024-03-29T00:49:04","date_gmt":"2024-03-28T16:49:04","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=3948"},"modified":"2024-03-29T00:49:04","modified_gmt":"2024-03-28T16:49:04","slug":"linux%e7%b3%bb%e7%bb%9f%e9%9a%8f%e4%bd%a0%e7%8e%a9%e4%b9%8b%e7%bd%91%e7%bb%9c%e4%b8%8a%e7%9a%84%e9%bb%91%e5%ae%a29455","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/29\/linux%e7%b3%bb%e7%bb%9f%e9%9a%8f%e4%bd%a0%e7%8e%a9%e4%b9%8b%e7%bd%91%e7%bb%9c%e4%b8%8a%e7%9a%84%e9%bb%91%e5%ae%a29455\/","title":{"rendered":"Linux \u7cfb\u7edf\u968f\u4f60\u73a9\u4e4b\u2014\u2014\u7f51\u7edc\u4e0a\u7684\u9ed1\u5ba2\u5e1d\u56fd"},"content":{"rendered":"
\n

\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 \u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n

\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

\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n

\"cap\u5305\u683c\u5f0f\"
<\/p><\/pre>\n<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>
\"cap\u5305\u683c\u5f0f\"<\/p><\/pre>\n<\/p>\n
\u8f6c\u81ea\uff1aCSDN<\/span><\/p>
\u4f5c\u8005\uff1a\u98ce\u4e00\u6837\u7684\u7f8e\u72fc\u5b50<\/span><\/p><\/section><\/blockquote><\/span><\/section><\/section><\/pre>\n<\/p>\n
1\u3001\u524d\u8a00<\/p>\n
\u9ed1\u5ba2\u5e1d\u56fd\u7cfb\u5217\u7247 \u5927\u5bb6\u90fd\u770b\u8fc7\u4e86\uff0c\u77e5\u9053\u7f51\u7edc\u9ed1\u5ba2\u5c3c\u5965\u53d1\u73b0\u770b\u4f3c\u6b63\u5e38\u7684\u73b0\u5b9e\u4e16\u754c\u5b9e\u9645\u4e0a\u662f\u7531\u4e00\u4e2a\u540d\u4e3a \u201c\u77e9\u9635\u201d \u7684\u8ba1\u7b97\u673a\u4eba\u5de5\u667a\u80fd\u7cfb\u7edf\u63a7\u5236\u7684\uff0c\u7136\u540e\u5c3c\u5965\u89c1\u5230\u4e86\u9ed1\u5ba2\u7ec4\u7ec7\u7684\u9996\u9886\u58a8\u83f2\u65af\uff0c\u4e09\u4eba\u8d70\u4e0a\u4e86\u6297\u4e89\u77e9\u9635\u5f81\u9014\u7684\u6545\u4e8b \u3002<\/p>\n
\u90a3\u4e48\u9ed1\u5ba2\u90fd\u662f\u4e9b\u4ec0\u4e48\u4eba\u4e86\uff1f<\/p>\n
\u9ed1\u5ba2\u5982\u4eca\u5728\u4e92\u8054\u7f51\u4e0a\u5df2\u7ecf\u4e0d\u518d\u662f\u9c9c\u4e3a\u4eba\u77e5\u7684\u4eba\u7269\uff0c\u4ed6\u4eec\u5df2\u7ecf\u53d1\u5c55\u6210\u7f51\u7edc\u4e0a\u7684\u4e00\u4e2a\u72ec\u7279\u7684\u7fa4\u4f53\u3002\u4ed6\u4eec\u6709\u7740\u4e0e\u5e38\u4eba\u4e0d\u540c\u7684\u7406\u60f3\u548c\u8ffd\u6c42\uff0c\u6709\u7740\u81ea\u5df1\u72ec\u7279\u7684\u884c\u4e3a\u6a21\u5f0f\uff0c\u7f51\u7edc\u4e0a\u51fa\u73b0\u4e86\u5f88\u591a\u7531\u4e00\u4e9b\u5fd7\u540c\u9053\u5408\u7684\u4eba\u7ec4\u7ec7\u8d77\u6765\u7684\u9ed1\u5ba2\u7ec4\u7ec7\u3002<\/p>\n
\u5728[\u4fe1\u606f\u5b89\u5168]\u91cc\uff0c\u201c\u9ed1\u5ba2\u201d \u6307\u7814\u7a76\u667a\u53d6\u8ba1\u7b97\u673a\u5b89\u5168\u7cfb\u7edf\u7684\u4eba\u5458\u3002\u5229\u7528\u516c\u5171\u901a\u8baf\u7f51\u8def\uff0c\u5982\u4e92\u8054\u7f51\u548c\u7535\u8bdd\u7cfb\u7edf\uff0c\u5728\u672a\u7ecf\u8bb8\u53ef\u7684\u60c5\u51b5\u4e0b\uff0c\u8f7d\u5165\u5bf9\u65b9\u7cfb\u7edf\u7684\u88ab\u79f0\u4e3a\u9ed1\u5e3d\u9ed1\u5ba2\uff08\u82f1\u6587\uff1ablack hat\uff0c\u53e6\u79f0 cracker\uff09\uff1b\u8c03\u8bd5\u548c\u5206\u6790\u8ba1\u7b97\u673a\u5b89\u5168\u7cfb\u7edf\u7684\u767d\u5e3d\u9ed1\u5ba2\uff08\u82f1\u8bed\uff1awhite hat\uff09\u3002\u201c\u9ed1\u5ba2\u201d \u4e00\u8bcd\u6700\u65e9\u7528\u6765\u79f0\u547c\u7814\u7a76\u76d7\u7528\u7535\u8bdd\u7cfb\u7edf\u7684\u4eba\u58eb\u3002<\/p>\n
\u4ed6\u4eec\u6709\u4e2a\u5171\u540c\u70b9\u90fd\u662f\u5229\u7528\u516c\u5171\u901a\u8baf\u7f51\u8def\uff0c\u8fdb\u884c\u7740\u4e0d\u540c\u7684\u6d3b\u52a8\u3002<\/p>\n
\u800c\u4eca\u5929\u6211\u4eec\u7684\u4e3b\u89d2\u4e5f\u662f\u9488\u5bf9\u7f51\u7edc\u8fdb\u884c[\u6570\u636e\u91c7\u96c6]\u4e0e\u5206\u6790\u7684\u5de5\u5177\uff0c\u5b83\u5c31\u662fTCPDump\u3002<\/p>\n
\u8001\u6837\u5b50\uff0c\u6211\u4eec\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86 LinuxTCPDump \u547d\u4ee4\u4f7f\u7528\u8be6\u89e3\uff0c\u6587\u4e2d\u4f1a\u901a\u8fc7\u975e\u5e38\u8be6\u7ec6\u7684\u793a\u4f8b\u4ee3\u7801\u4ecb\u7ecd\uff0c\u5bf9\u5927\u5bb6\u7684\u5b66\u4e60\u6216\u8005\u5de5\u4f5c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u5b66\u4e60\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u4eec\u4e0b\u9762\u968f\u6211\u6765\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n
2\u3001[TCPDump] \u4ecb\u7ecd<\/p>\n
Linux \u4f5c\u4e3a\u7f51\u7edc\u670d\u52a1\u5668\uff0c\u7279\u522b\u662f\u4f5c\u4e3a\u8def\u7531\u5668\u548c\u7f51\u5173\u65f6\uff0c\u6570\u636e\u7684\u91c7\u96c6\u548c\u5206\u6790\u662f\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n
Tcpdump \u662f\u4e00\u4e2a\u7528\u4e8e\u622a\u53d6\u7f51\u7edc\u5206\u7ec4\uff0c\u5e76\u8f93\u51fa\u5206\u7ec4\u5185\u5bb9\u7684\u5de5\u5177\u3002<\/p>\n
tcpdump \u51ed\u501f\u5f3a\u5927\u7684\u529f\u80fd\u548c\u7075\u6d3b\u7684\u622a\u53d6\u7b56\u7565\uff0c\u4f7f\u5176\u6210\u4e3a\u7c7b UNIX \u7cfb\u7edf\u4e0b\u7528\u4e8e\u7f51\u7edc\u5206\u6790\u548c\u95ee\u9898\u6392\u67e5\u7684\u9996\u9009\u5de5\u5177\u3002<\/p>\n
\u5b83\u652f\u6301\u9488\u5bf9\u7f51\u7edc\u5c42\u3001\u534f\u8bae\u3001\u4e3b\u673a\u3001\u7f51\u7edc\u6216\u7aef\u53e3\u7684\u8fc7\u6ee4\uff0c\u5e76\u63d0\u4f9b and\u3001or\u3001not \u7b49\u903b\u8f91\u8bed\u53e5\u6765\u5e2e\u52a9\u4f60\u53bb\u6389\u65e0\u7528\u7684\u4fe1\u606f\u3002<\/p>\n
\u57fa\u672c\u4e0a tcpdump \u7684\u603b\u7684\u8f93\u51fa\u683c\u5f0f\u4e3a\uff1a\u7cfb\u7edf\u65f6\u95f4 \u6765\u6e90\u4e3b\u673a. \u7aef\u53e3 > \u76ee\u6807\u4e3b\u673a. \u7aef\u53e3 \u6570\u636e\u5305\u53c2\u6570<\/p>\n
2.1\u3001\u95ee\u9898\u6765\u4e86\uff1a\u6240\u6709\u7528\u6237\u90fd\u53ef\u4ee5\u91c7\u7528\u8be5\u547d\u4ee4\u5417\uff1f<\/p>\n
\u867d\u7136 tcpdump \u63d0\u4f9b\u6e90\u4ee3\u7801\uff0c\u516c\u5f00\u4e86\u63a5\u53e3\uff0c\u5177\u5907\u5f88\u5f3a\u7684\u53ef\u6269\u5c55\u6027\uff0c\u5bf9\u4e8e\u7f51\u7edc\u7ef4\u62a4\u548c\u5165\u4fb5\u8005\u90fd\u662f\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u3002<\/p>\n
\u4f46 tcpdump\u666e\u901a\u7528\u6237\u4e0d\u80fd\u6b63\u5e38\u6267\u884c\uff0c\u9700\u8981\u5177\u5907 root \u6743\u9650\u7684\u7528\u6237\u624d\u53ef\u4ee5\u76f4\u63a5\u6267\u884c\u5b83\u6765\u83b7\u53d6\u7f51\u7edc\u4e0a\u7684\u4fe1\u606f\u3002<\/p>\n
2.2\u3001\u6293\u5305\u539f\u7406<\/p>\n
linux \u6293\u5305\u662f\u901a\u8fc7\u6ce8\u518c\u4e00\u79cd\u865a\u62df\u7684\u5e95\u5c42\u7f51\u7edc\u534f\u8bae\u6765\u5b8c\u6210\u5bf9\u7f51\u7edc\u62a5\u6587\uff08\u51c6\u786e\u7684\u662f\u7f51\u7edc\u8bbe\u5907\uff09\u6d88\u606f\u7684\u5904\u7406\u6743\u3002<\/p>\n
\u5f53\u7f51\u5361\u63a5\u6536\u5230\u4e00\u4e2a\u7f51\u7edc\u62a5\u6587\u4e4b\u540e\uff0c\u5b83\u4f1a\u904d\u5386\u7cfb\u7edf\u4e2d\u6240\u6709\u5df2\u7ecf\u6ce8\u518c\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u5982\u4ee5\u592a\u7f51\u534f\u8bae\u3001x25 \u534f\u8bae\u5904\u7406\u6a21\u5757\u6765\u5c1d\u8bd5\u8fdb\u884c\u62a5\u6587\u7684\u89e3\u6790\u5904\u7406\u3002<\/p>\n
\u5f53\u6293\u5305\u6a21\u5757\u628a\u81ea\u5df1\u4f2a\u88c5\u6210\u4e00\u4e2a\u7f51\u7edc\u534f\u8bae\u7684\u65f6\u5019\uff0c\u7cfb\u7edf\u5728\u6536\u5230\u62a5\u6587\u7684\u65f6\u5019\u5c31\u4f1a\u7ed9\u8fd9\u4e2a\u4f2a\u534f\u8bae\u4e00\u6b21\u673a\u4f1a\uff0c\u8ba9\u5b83\u5bf9\u7f51\u5361\u6536\u5230\u7684\u4fdd\u6e29\u8fdb\u884c\u4e00\u6b21\u5904\u7406\uff0c\u6b64\u65f6\u8be5\u6a21\u5757\u5c31\u4f1a\u8d81\u673a\u5bf9\u62a5\u6587\u8fdb\u884c\u7aa5\u63a2\uff0c\u4e5f\u5c31\u662f\u554a\u8fd9\u4e2a\u62a5\u6587\u5b8c\u5b8c\u6574\u6574\u7684\u590d\u5236\u4e00\u4efd\uff0c\u5047\u88c5\u662f\u81ea\u5df1\u63a5\u6536\u7684\u62a5\u6587\uff0c\u6c47\u62a5\u7ed9\u6293\u5305\u6a21\u5757\u3002<\/p>\n
2.3\u3001\u7279\u70b9<\/p>\n
2.3.1.\u53c2\u6570\u5316\u652f\u6301<\/p>\n
1. \u53c2\u6570<\/p>\n
tcpdump \u652f\u6301\u76f8\u5f53\u591a\u7684\u4e0d\u540c\u53c2\u6570\u3002<\/p>\n
\u5982\u4f7f\u7528 - i \u53c2\u6570\u6307\u5b9a tcpdump \u76d1\u542c\u7684\u7f51\u7edc\u63a5\u53e3\uff0c \u4f7f\u7528 - c \u53c2\u6570\u6307\u5b9a\u8981\u76d1\u542c\u7684\u6570\u636e\u5305\u6570\u91cf\uff0c \u4f7f\u7528 - w \u53c2\u6570\u6307\u5b9a\u5c06\u76d1\u542c\u5230\u7684\u6570\u636e\u5305\u5199\u5165\u6587\u4ef6\u4e2d\u4fdd\u5b58\u7b49\u3002<\/p>\n
2. \u5b89\u5168<\/p>\n
\u4e00\u822c\u60c5\u51b5\u4e0b\u7f51\u7edc\u786c\u4ef6\u548c TCP\/IP \u5806\u6808\u4e0d\u652f\u6301\u63a5\u6536\u6216\u53d1\u9001\u4e0e\u672c\u8ba1\u7b97\u673a\u65e0\u5173\u7684\u6570\u636e\u5305\uff0c\u4e3a\u4e86\u63a5\u6536\u8fd9\u4e9b\u6570\u636e\u5305\uff0c\u5c31\u5fc5\u987b\u4f7f\u7528\u7f51\u5361\u7684\u6df7\u6742\u6a21\u5f0f\uff0c\u5e76\u7ed5\u8fc7\u6807\u51c6\u7684 TCP\/IP \u5806\u6808\u624d\u884c\u3002<\/p>\n
\u5728 FreeBSD \u4e0b\uff0c\u8fd9\u5c31\u9700\u8981\u5185\u6838\u652f\u6301\u4f2a\u8bbe\u5907 bpfilter\u3002\u56e0\u6b64\uff0c\u5728\u5185\u6838\u4e2d\u53d6\u6d88 bpfilter \u652f\u6301\uff0c\u5c31\u80fd\u5c4f\u853d tcpdump \u4e4b\u7c7b\u7684\u7f51\u7edc\u5206\u6790\u5de5\u5177\u3002<\/p>\n
\u5e76\u4e14\u5f53\u7f51\u5361\u88ab\u8bbe\u7f6e\u4e3a\u6df7\u6742\u6a21\u5f0f\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5728\u63a7\u5236\u53f0\u548c\u65e5\u5fd7\u6587\u4ef6\u4e2d\u7559\u4e0b\u8bb0\u5f55\uff0c\u63d0\u9192\u7ba1\u7406\u5458\u7559\u610f\u8fd9\u53f0\u7cfb\u7edf\u662f\u5426\u88ab\u7528\u4f5c\u653b\u51fb\u540c\u7f51\u7edc\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\u7684\u8df3\u677f\u3002<\/p>\n
3. \u89e3\u7801<\/p>\n
tcpdump \u5bf9\u622a\u83b7\u7684\u6570\u636e\u5e76\u6ca1\u6709\u8fdb\u884c\u5f7b\u5e95\u89e3\u7801\uff0c\u6570\u636e\u5305\u5185\u7684\u5927\u90e8\u5206\u5185\u5bb9\u662f\u4f7f\u7528\u5341\u516d\u8fdb\u5236\u7684\u5f62\u5f0f\u76f4\u63a5\u6253\u5370\u8f93\u51fa\u7684\u3002\u663e\u7136\u8fd9\u4e0d\u5229\u4e8e\u5206\u6790\u7f51\u7edc\u6545\u969c\uff0c\u901a\u5e38\u7684\u89e3\u51b3\u529e\u6cd5\u662f\u5148\u4f7f\u7528\u5e26 - w \u53c2\u6570\u7684 tcpdump \u622a\u83b7\u6570\u636e\u5e76\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\u518d\u4f7f\u7528\u5176\u4ed6\u7a0b\u5e8f\u8fdb\u884c\u89e3\u7801\u5206\u6790\u3002\u5f53\u7136\u4e5f\u5e94\u8be5\u5b9a\u4e49\u8fc7\u6ee4\u89c4\u5219\uff0c\u4ee5\u907f\u514d\u6355\u83b7\u7684\u6570\u636e\u5305\u586b\u6ee1\u6574\u4e2a\u786c\u76d8\u3002<\/p>\n
2.2.2.TCP \u529f\u80fd<\/p>\n
tcpDump \u5c06\u641c\u7d22\u7cfb\u7edf\u4e2d\u7b2c\u4e00\u4e2a\u7f51\u7edc\u63a5\u53e3\uff0c\u5e76\u663e\u793a\u5b83\u622a\u83b7\u7684\u6240\u6709\u6570\u636e\uff0c\u8fd9\u4e9b\u6570\u636e\u5bf9\u6211\u4eec\u4e0d\u4e00\u5b9a\u5168\u90fd\u9700\u8981\uff0c<\/p>\n
\u6570\u636e\u592a\u591a\u4e0d\u5229\u4e8e\u5206\u6790\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5e94\u5f53\u5148\u60f3\u597d\u9700\u8981\u54ea\u4e9b\u6570\u636e\uff0cTcpDump \u63d0\u4f9b\u4e86\u5f88\u591a\u53c2\u6570\u4f9b\u6211\u4eec\u9009\u62e9\u6570\u636e\u8fc7\u6ee4\u3002<\/p>\n
3.\u670d\u52a1\u5668\u5b89\u88c5 Tcpdump<\/p>\n
3.1\u3001\u5b89\u88c5<\/p>\n
\u4e00\u822c\u60c5\u51b5\u4e0b Linux \u7cfb\u7edf\u4f1a\u81ea\u5e26 tcpdump \u5de5\u5177\uff0c\u5982\u679c\u7cfb\u7edf\u6ca1\u6709\u5b89\u88c5\uff0c\u76f4\u63a5\u7528\u547d\u4ee4\u5b89\u88c5\u5c31\u884c\u4e86\u3002<\/p>\n
\u5728 linux \u670d\u52a1\u5668\u4e0a\u6211\u4eec\u4f7f\u7528yum install -y tcpdump\u547d\u4ee4\u6765\u5b89\u88c5 tcpdump \u5de5\u5177\u3002<\/p>\n
3.2\u3001\u68c0\u67e5\u5b89\u88c5\u662f\u5426\u6b63\u5e38\u3002<\/p>\n
\u67e5\u770b\u5b89\u88c5\u7248\u672c\u547d\u4ee4\uff1atcpdump --help<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>\n
4.tcpdump \u547d\u4ee4<\/p>\n
4.1.\u5e38\u7528\u529f\u80fd\u9009\u9879<\/p>\n
tcpdump [-adeflnNOpqStvx][-c \u6570\u636e\u5305\u6570\u91cf >][-dd][-ddd][-F ][-i ][-r ][-s ][-tt][-T ][-vv][-w ][\u8f93\u51fa\u6570\u636e\u680f\u4f4d]<\/p>\n
\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n
4.2\u3001\u8f93\u51fa\u5185\u5bb9<\/p>\n
\u57fa\u672c\u4e0a tcpdump \u603b\u7684\u7684\u8f93\u51fa\u683c\u5f0f\u4e3a\uff1a\u7cfb\u7edf\u65f6\u95f4 \u6765\u6e90\u4e3b\u673a. \u7aef\u53e3 > \u76ee\u6807\u4e3b\u673a. \u7aef\u53e3 \u6570\u636e\u5305\u53c2\u6570<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>\n
5\u3001\u5b9e\u64cd<\/p>\n
5.1\u3001\u5e38\u89c1\u7528\u6cd5<\/p>\n
1. \u67e5\u770b\u7f51\u5361\u547d\u4ee4\uff1aifconfig<\/p>\n
\u77e5\u9053\u4e86\u7f51\u5361\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528 tcpdump \u5de5\u5177\u9488\u5bf9\u670d\u52a1\u5668\u4e0a\u7684\u7f51\u5361\u8fdb\u884c\u76d1\u63a7\u3001\u8fc7\u6ee4\u7f51\u7edc\u6570\u636e\u4e86\u3002<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>\n
2. \u67e5\u770b\u672c\u5730\u7f51\u5361\u72b6\u6001<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>\n
Iface\uff1a\u5b58\u5728\u7684\u7f51\u5361\u3002<\/p>\n
MTU\uff1a\u6700\u5927\u4f20\u8f93\u5355\u5143\u3002<\/p>\n
RX-OK RX-ERR RX-DRP RX-OVR\uff1a\u6b63\u786e\u63a5\u6536\u6570\u636e\u62a5\u7684\u6570\u91cf\u4ee5\u53ca\u53d1\u751f\u9519\u8bef\u3001\u6d41\u5f0f\u3001\u78b0\u649e\u7684\u603b\u6570\u3002TX-OK TX-ERR TX-DRP TX-OVR\uff1a\u6b63\u786e\u53d1\u9001\u6570\u636e\u62a5\u7684\u6570\u91cf\u4ee5\u53ca\u53d1\u751f\u9519\u8bef\u3001\u6d41\u5f0f\u3001\u78b0\u649e\u7684\u603b\u6570\u3002<\/p>\n
3. \u6307\u5b9a\u7f51\u5361<\/p>\n
\u666e\u901a\u60c5\u51b5\u4e0b\uff0c\u76f4\u63a5\u542f\u52a8 tcpdump \u5c06\u76d1\u89c6\u7b2c\u4e00\u4e2a\u7f51\u7edc\u7aef\u53e3\u6240\u6709\u6d41\u8fc7\u7684\u6570\u636e\u5305\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u7f51\u5361\uff0c\u9ed8\u8ba4 tcpdump \u53ea\u4f1a\u76d1\u89c6\u7b2c\u4e00\u4e2a\u7f51\u7edc\u63a5\u53e3\u3002<\/p>\n
tcpdump -i ens33(\u7f51\u5361\u540d)<\/p>\n
4. \u76d1\u89c6\u6240\u6709\u8fdb\u5165\u6216\u79bb\u5f00\u4e3b\u673a xps \u7684\u6570\u636e\u5305\u3002xps \u4e3a\u4e3b\u673a\u540d\u3002<\/p>\n<\/p>\n
tcpdump host xps
<\/span><\/section><\/pre>\n<\/p>\n
5. \u76d1\u89c6\u6307\u5b9a ip\uff0c\u622a\u83b7\u6307\u5b9a\u4e3b\u673a\u6536\u5230\u548c\u53d1\u51fa\u7684\u6240\u6709\u6570\u636e\u5305\u3002<\/p>\n<\/p>\n
tcpdump host 192.168.1.5 
<\/span><\/section><\/pre>\n<\/p>\n
6.\u622a\u83b7\u4e3b\u673a 192.168.1.5 \u548c 192.168.1.10 \u6216 192.168.1.113 \u7684\u901a\u4fe1\u5305<\/p>\n<\/p>\n
tcpdump host 192.168.1.5 and (192.168.1.10 or 192.168.1.13)  
<\/span><\/section><\/pre>\n<\/p>\n
7.\u6253\u5370 xps \u4e0e\u4efb\u4f55\u5176\u4ed6\u4e3b\u673a\u4e4b\u95f4\u901a\u4fe1\u7684 IP \u6570\u636e\u5305\uff0c\u4f46\u4e0d\u5305\u62ec\u4e0e xps1 \u4e4b\u95f4\u7684\u901a\u4fe1\u5305<\/p>\n<\/p>\n
tcpdump ip host xps and not xps1  
<\/span><\/section><\/pre>\n<\/p>\n
8.\u622a\u83b7\u4e3b\u673a 192.168.1.5 \u9664\u4e86\u548c 192.168.1.13 \u4e4b\u5916\u6240\u6709\u7684\u4e3b\u673a\u901a\u4fe1\u7684 ip \u5305<\/p>\n<\/p>\n
tcpdump ip host 192.168.1.5 and ! 192.168.1.13  
<\/span><\/section><\/pre>\n<\/p>\n
9.\u622a\u83b7\u4e3b\u673a hostname \u53d1\u9001\u7684\u6240\u6709\u6570\u636e<\/p>\n<\/p>\n
tcpdump -i ens33 src host hostname  
<\/span><\/section><\/pre>\n<\/p>\n
10.\u622a\u83b7\u9001\u5230\u4e3b\u673a hostname \u7684\u6240\u6709\u6570\u636e<\/p>\n<\/p>\n
tcpdump -i ens33 dst host hostname
<\/span><\/section><\/pre>\n<\/p>\n
5.2\u3001\u76d1\u542c\u6307\u5b9a\u57df\u540d TCP \u534f\u8bae\u6570\u636e\u5305<\/p>\n<\/p>\n
tcpdump host baidu.com\u3002  
<\/span><\/section><\/pre>\n<\/p>\n
\u6b64\u65f6\u3001\u547d\u4ee4\u884c\u4e0b\u53ef\u4ee5\u770b\u5230\u5ba2\u6237\u7aef\u548c baidu \u670d\u52a1\u4e4b\u95f4\u7684 TCP \u534f\u8bae IP \u5305\u3001\u5b66\u4e60\u7f51\u7edc\u534f\u8bae\u7684\u65f6\u5019\u3001\u914d\u5408\u4f7f\u7528\u5f88\u65b9\u4fbf\u3002<\/p>\n
2\u3001\u76d1\u542c\u6765\u81ea\u6307\u5b9a\u57df\u540d\u7684 TCP \u534f\u8bae\u5305\u6570\u636e\u5305\uff1a<\/p>\n<\/p>\n
tcpdump src host baidu.com\u3002  
<\/span><\/section><\/pre>\n<\/p>\n
\u6b64\u65f6\u3001\u547d\u4ee4\u884c\u4e0b\u53ef\u4ee5\u770b\u5230\u5ba2\u6237\u7aef\u548c baidu \u670d\u52a1\u4e4b\u95f4\u7684 TCP \u534f\u8bae IP \u5305\u3001\u5b66\u4e60\u7f51\u7edc\u534f\u8bae\u7684\u65f6\u5019\u3001\u914d\u5408\u4f7f\u7528\u5f88\u65b9\u4fbf\u3002<\/p>\n
\u6b65\u9aa4\u4e00\u3001\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u57df\u540d\u7684 ip \u5305\u6d41\u91cf\uff1a<\/p>\n<\/p>\n
tcpdump dst host baidu.com\u3002  
<\/span><\/section><\/pre>\n<\/p>\n
\u6b64\u65f6\u3001\u547d\u4ee4\u884c\u4e0b\u53ef\u4ee5\u770b\u5230\u5ba2\u6237\u7aef\u548c baidu \u670d\u52a1\u4e4b\u95f4\u7684 TCP \u534f\u8bae IP \u5305\u3001\u5b66\u4e60\u7f51\u7edc\u534f\u8bae\u7684\u65f6\u5019\u3001\u914d\u5408\u4f7f\u7528\u5f88\u65b9\u4fbf\u3002<\/p>\n<\/p>\n
tcpdump tcp port 80\u3002  
<\/span><\/section><\/pre>\n<\/p>\n
\u6b64\u65f6\u3001tcpdump \u76d1\u542c\u7ec8\u7aef\u4e0b\u53ef\u4ee5\u770b\u5230\u8bf7\u6c42\u548c\u8fd4\u56de\u7684 ip \u5305\u3002\u540c\u7406\u3001\u5982\u679c\u8981\u76d1\u542c udp \u5305\u53ef\u4ee5\u7528\uff1atcpdump udp port 9999<\/p>\n
5.3\u3001tcpdump \u4e0e Wireshark<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u628a\u4e8c\u8005\u8fdb\u884c\u7ed3\u5408\uff0c\u5728 Linux \u4e2d\u6293\u5305\uff0c\u5728 windows \u4e2d\u5206\u6790\u5305\u3002<\/p>\n<\/p>\n
tcpdump tcp -i ens33 -t -s 0 -c 5 and dst port \uff0122 and src net 192.168.1.10\/24 -w .\/targetfile.cap
<\/span><\/section><\/pre>\n<\/p>\n
6\u3001\u7ed3\u8bed<\/p>\n
tcpdump \u9488\u5bf9\u7f51\u7edc\u8fdb\u884c\u6570\u636e\u91c7\u96c6\u4e0e\u5206\u6790, \u540c\u65f6\u4fdd\u5b58\u5230\u6307\u5b9a\u6587\u4ef6\uff0c\u7528 wireshark \u6765\u6253\u5f00\u67e5\u770b\u3002\u53ef\u4ee5\u5feb\u901f\u67e5\u770b\u7b26\u5408\u7f51\u7edc\u63a5\u53e3\u7b26\u5408\u67d0\u4e00\u6761\u4ef6\u7684\u6293\u5305\uff0c\u65b9\u4fbf\u6211\u4eec\u786e\u5b9a\u7f51\u7edc\u95ee\u9898\u3002<\/p>\n
\u6700\u8fd1\u5f88\u591a\u5c0f\u4f19\u4f34\u627e\u6211\u8981\u4e00\u4e9b\u7a0b\u5e8f\u5458\u5fc5\u5907\u8d44\u6599\uff0c\u4e8e\u662f\u6211\u7ffb\u51fa\u4e86\u538b\u7bb1\u5e95\u7684\u5b9d\u85cf\uff0c\u514d\u8d39\u5206\u4eab\u7ed9\u5927\u5bb6\uff01<\/p>\n
\u626b\u63cf\u6d77\u62a5\u4e8c\u7ef4\u7801\u514d\u8d39\u83b7\u53d6\u3002<\/p>\n
\"cap\u5305\u683c\u5f0f\"<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Linux \u7cfb\u7edf\u968f\u4f60\u73a9\u4e4b\u2014\u2014\u7f51\u7edc\u4e0a\u7684\u9ed1\u5ba2\u5e1d\u56fd1\u3001\u524d\u8a00\u9ed1\u5ba2\u5e1d\u56fd\u7cfb\u5217\u7247 \u5927\u5bb6\u90fd\u770b\u8fc7\u4e86\uff0c\u77e5\u9053\u7f51\u7edc\u9ed1\u5ba2\u5c3c\u5965\u53d1\u73b0\u770b\u4f3c\u6b63\u5e38\u7684\u73b0\u5b9e\u4e16\u754c\u5b9e\u9645\u4e0a\u662f\u7531\u4e00\u4e2a\u540d\u4e3a \u201c\u77e9\u9635\u201d \u7684\u8ba1\u7b97\u673a\u4eba\u5de5\u667a\u80fd\u7cfb\u7edf\u63a7\u5236\u7684\uff0c\u7136\u540e\u5c3c\u5965\u89c1\u5230\u4e86\u9ed1\u5ba2\u7ec4\u7ec7\u7684\u9996\u9886\u58a8\u83f2\u65af<\/p>\n","protected":false},"author":1,"featured_media":3949,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-3948","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/3948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/comments?post=3948"}],"version-history":[{"count":0,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/3948\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media\/3949"}],"wp:attachment":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media?parent=3948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/categories?post=3948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/tags?post=3948"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/topic?post=3948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}