{"id":737,"date":"2016-12-04T13:53:17","date_gmt":"2016-12-04T13:53:17","guid":{"rendered":"https:\/\/peloo.net\/?p=737"},"modified":"2018-02-04T11:27:50","modified_gmt":"2018-02-04T11:27:50","slug":"linux%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9ftcpdump%e6%8a%93%e5%8c%85%e5%88%86%e6%9e%90%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/peloo.net\/?p=737","title":{"rendered":"Linux\u64cd\u4f5c\u7cfb\u7edftcpdump\u6293\u5305\u5206\u6790\u8be6\u89e3(\u8f6c)"},"content":{"rendered":"
\n\t Linux\u64cd\u4f5c\u7cfb\u7edftcpdump\u6293\u5305\u5206\u6790\u8be6\u89e3<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\tPS\uff1atcpdump\u662f\u4e00\u4e2a\u7528\u4e8e\u622a\u53d6\u7f51\u7edc\u5206\u7ec4\uff0c\u5e76\u8f93\u51fa\u5206\u7ec4\u5185\u5bb9\u7684\u5de5\u5177\uff0c\u7b80\u5355\u8bf4\u5c31\u662f\u6570\u636e\u5305\u6293\u5305\u5de5\u5177\u3002tcpdump\u51ed\u501f\u5f3a\u5927\u7684\u529f\u80fd\u548c\u7075\u6d3b\u7684\u622a\u53d6\u7b56\u7565\uff0c\u4f7f\u5176\u6210\u4e3aLinux\u7cfb\u7edf\u4e0b\u7528\u4e8e\u7f51\u7edc\u5206\u6790\u548c\u95ee\u9898\u6392\u67e5\u7684\u9996\u9009\u5de5\u5177\u3002<\/span><\/span>\n<\/div>\n
\n\ttcpdump\u63d0\u4f9b\u4e86\u6e90\u4ee3\u7801\uff0c\u516c\u5f00\u4e86\u63a5\u53e3\uff0c\u56e0\u6b64\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\u3002tcpdump\u5b58\u5728\u4e8e\u57fa\u672c\u7684Linux\u7cfb\u7edf\u4e2d\uff0c\u7531\u4e8e\u5b83\u9700\u8981\u5c06\u7f51\u7edc\u754c\u9762\u8bbe\u7f6e\u4e3a\u6df7\u6742\u6a21\u5f0f\uff0c\u666e\u901a\u7528\u6237\u4e0d\u80fd\u6b63\u5e38\u6267\u884c\uff0c\u4f46\u5177\u5907root\u6743\u9650\u7684\u7528\u6237\u53ef\u4ee5\u76f4\u63a5\u6267\u884c\u5b83\u6765\u83b7\u53d6\u7f51\u7edc\u4e0a\u7684\u4fe1\u606f\u3002\u56e0\u6b64\u7cfb\u7edf\u4e2d\u5b58\u5728\u7f51\u7edc\u5206\u6790\u5de5\u5177\u4e3b\u8981\u4e0d\u662f\u5bf9\u672c\u673a\u5b89\u5168\u7684\u5a01\u80c1\uff0c\u800c\u662f\u5bf9\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\u7684\u5b89\u5168\u5b58\u5728\u5a01\u80c1\u3002<\/span><\/span>\n<\/div>\n
\n\t\u4e00\u3001\u6982\u8ff0<\/span><\/span>\n<\/div>\n
\n\t\u987e\u540d\u601d\u4e49\uff0ctcpdump\u53ef\u4ee5\u5c06\u7f51\u7edc\u4e2d\u4f20\u9001\u7684\u6570\u636e\u5305\u7684“\u5934”\u5b8c\u5168\u622a\u83b7\u4e0b\u6765\u63d0\u4f9b\u5206\u6790\u3002\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\u4f9band\u3001or\u3001not\u7b49\u903b\u8f91\u8bed\u53e5\u6765\u5e2e\u52a9\u4f60\u53bb\u6389\u65e0\u7528\u7684\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t# tcpdump -vv<\/span><\/span>\n<\/div>\n
\n\ttcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes<\/span><\/span>\n<\/div>\n
\n\t11:53:21.444591 IP (tos 0x10, ttl  64, id 19324, offset 0, flags [DF], proto 6, length: 92) asptest.localdomain.ssh > 192.168.228.244.1858: P 3962132600:3962132652(52) ack 2726525936 win 1266<\/span><\/span>\n<\/div>\n
\n\tasptest.localdomain.1077 > 192.168.228.153.domain: [bad udp cksum 166e!]  325+ PTR? 244.228.168.192.in-addr.arpa. (46)<\/span><\/span>\n<\/div>\n
\n\t11:53:21.446929 IP (tos 0x0, ttl  64, id 42911, offset 0, flags [DF], proto 17, length: 151) 192.168.228.153.domain > asptest.localdomain.1077:  325 NXDomain q: PTR? 244.228.168.192.in-addr.arpa. 0\/1\/0 ns: 168.192.in-addr.arpa. (123)<\/span><\/span>\n<\/div>\n
\n\t11:53:21.447408 IP (tos 0x10, ttl  64, id 19328, offset 0, flags [DF], proto 6, length: 172) asptest.localdomain.ssh > 192.168.228.244.1858: P 168:300(132) ack 1 win 1266<\/span><\/span>\n<\/div>\n
\n\t347 packets captured<\/span><\/span>\n<\/div>\n
\n\t1474 packets received by filter<\/span><\/span>\n<\/div>\n
\n\t745 packets dropped by kernel<\/span><\/span>\n<\/div>\n
\n\t\u4e0d\u5e26\u53c2\u6570\u7684tcpdump\u4f1a\u6536\u96c6\u7f51\u7edc\u4e2d\u6240\u6709\u7684\u4fe1\u606f\u5305\u5934\uff0c\u6570\u636e\u91cf\u5de8\u5927\uff0c\u5fc5\u987b\u8fc7\u6ee4\u3002<\/span><\/span>\n<\/div>\n
\n\t\u4e8c\u3001\u9009\u9879\u4ecb\u7ecd<\/span><\/span>\n<\/div>\n
\n\t-A \u4ee5ASCII\u683c\u5f0f\u6253\u5370\u51fa\u6240\u6709\u5206\u7ec4\uff0c\u5e76\u5c06\u94fe\u8def\u5c42\u7684\u5934\u6700\u5c0f\u5316\u3002<\/span><\/span>\n<\/div>\n
\n\t-c \u5728\u6536\u5230\u6307\u5b9a\u7684\u6570\u91cf\u7684\u5206\u7ec4\u540e\uff0ctcpdump\u5c31\u4f1a\u505c\u6b62\u3002<\/span><\/span>\n<\/div>\n
\n\t-C \u5728\u5c06\u4e00\u4e2a\u539f\u59cb\u5206\u7ec4\u5199\u5165\u6587\u4ef6\u4e4b\u524d\uff0c\u68c0\u67e5\u6587\u4ef6\u5f53\u524d\u7684\u5927\u5c0f\u662f\u5426\u8d85\u8fc7\u4e86\u53c2\u6570file_size \u4e2d\u6307\u5b9a\u7684\u5927\u5c0f\u3002\u5982\u679c\u8d85\u8fc7\u4e86\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u5173\u95ed\u5f53\u524d\u6587\u4ef6\uff0c\u7136\u540e\u5728\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\u3002\u53c2\u6570 file_size \u7684\u5355\u4f4d\u662f\u5146\u5b57\u8282\uff08\u662f1,000,000\u5b57\u8282\uff0c\u800c\u4e0d\u662f1,048,576\u5b57\u8282\uff09\u3002<\/span><\/span>\n<\/div>\n
\n\t-d \u5c06\u5339\u914d\u4fe1\u606f\u5305\u7684\u4ee3\u7801\u4ee5\u4eba\u4eec\u80fd\u591f\u7406\u89e3\u7684\u6c47\u7f16\u683c\u5f0f\u7ed9\u51fa\u3002<\/span><\/span>\n<\/div>\n
\n\t-dd \u5c06\u5339\u914d\u4fe1\u606f\u5305\u7684\u4ee3\u7801\u4ee5c\u8bed\u8a00\u7a0b\u5e8f\u6bb5\u7684\u683c\u5f0f\u7ed9\u51fa\u3002<\/span><\/span>\n<\/div>\n
\n\t-ddd \u5c06\u5339\u914d\u4fe1\u606f\u5305\u7684\u4ee3\u7801\u4ee5\u5341\u8fdb\u5236\u7684\u5f62\u5f0f\u7ed9\u51fa\u3002<\/span><\/span>\n<\/div>\n
\n\t-D \u6253\u5370\u51fa\u7cfb\u7edf\u4e2d\u6240\u6709\u53ef\u4ee5\u7528tcpdump\u622a\u5305\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/span><\/span>\n<\/div>\n
\n\t-e \u5728\u8f93\u51fa\u884c\u6253\u5370\u51fa\u6570\u636e\u94fe\u8def\u5c42\u7684\u5934\u90e8\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t-E \u7528spi@ipaddr algo:secret\u89e3\u5bc6\u90a3\u4e9b\u4ee5addr\u4f5c\u4e3a\u5730\u5740\uff0c\u5e76\u4e14\u5305\u542b\u4e86\u5b89\u5168\u53c2\u6570\u7d22\u5f15\u503cspi\u7684IPsec ESP\u5206\u7ec4\u3002<\/span><\/span>\n<\/div>\n
\n\t-f \u5c06\u5916\u90e8\u7684Internet\u5730\u5740\u4ee5\u6570\u5b57\u7684\u5f62\u5f0f\u6253\u5370\u51fa\u6765\u3002<\/span><\/span>\n<\/div>\n
\n\t-F \u4ece\u6307\u5b9a\u7684\u6587\u4ef6\u4e2d\u8bfb\u53d6\u8868\u8fbe\u5f0f\uff0c\u5ffd\u7565\u547d\u4ee4\u884c\u4e2d\u7ed9\u51fa\u7684\u8868\u8fbe\u5f0f\u3002<\/span><\/span>\n<\/div>\n
\n\t-i \u6307\u5b9a\u76d1\u542c\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/span><\/span>\n<\/div>\n
\n\t-l \u4f7f\u6807\u51c6\u8f93\u51fa\u53d8\u4e3a\u7f13\u51b2\u884c\u5f62\u5f0f\uff0c\u53ef\u4ee5\u628a\u6570\u636e\u5bfc\u51fa\u5230\u6587\u4ef6\u3002<\/span><\/span>\n<\/div>\n
\n\t-L \u5217\u51fa\u7f51\u7edc\u63a5\u53e3\u7684\u5df2\u77e5\u6570\u636e\u94fe\u8def\u3002<\/span><\/span>\n<\/div>\n
\n\t-m \u4ece\u6587\u4ef6module\u4e2d\u5bfc\u5165SMI MIB\u6a21\u5757\u5b9a\u4e49\u3002\u8be5\u53c2\u6570\u53ef\u4ee5\u88ab\u4f7f\u7528\u591a\u6b21\uff0c\u4ee5\u5bfc\u5165\u591a\u4e2aMIB\u6a21\u5757\u3002<\/span><\/span>\n<\/div>\n
\n\t-M \u5982\u679ctcp\u62a5\u6587\u4e2d\u5b58\u5728TCP-MD5\u9009\u9879\uff0c\u5219\u9700\u8981\u7528secret\u4f5c\u4e3a\u5171\u4eab\u7684\u9a8c\u8bc1\u7801\u7528\u4e8e\u9a8c\u8bc1TCP-MD5\u9009\u9009\u9879\u6458\u8981\uff08\u8be6\u60c5\u53ef\u53c2\u8003RFC 2385\uff09\u3002<\/span><\/span>\n<\/div>\n
\n\t-b \u5728\u6570\u636e-\u94fe\u8def\u5c42\u4e0a\u9009\u62e9\u534f\u8bae\uff0c\u5305\u62ecip\u3001arp\u3001rarp\u3001ipx\u90fd\u662f\u8fd9\u4e00\u5c42\u7684\u3002<\/span><\/span>\n<\/div>\n
\n\t-n \u4e0d\u628a\u7f51\u7edc\u5730\u5740\u8f6c\u6362\u6210\u540d\u5b57\u3002<\/span><\/span>\n<\/div>\n
\n\t-nn \u76f4\u63a5\u4ee5IP\u548c\u7aef\u53e3\u53f7\u663e\u793a\uff0c\u800c\u975e\u4e3b\u673a\u4e0e\u670d\u52a1\u5668\u540d\u79f0\u3002<\/span><\/span>\n<\/div>\n
\n\t-N \u4e0d\u8f93\u51fa\u4e3b\u673a\u540d\u4e2d\u7684\u57df\u540d\u90e8\u5206\u3002\u4f8b\u5982\uff0c‘nic.ddn.mil‘\u53ea\u8f93\u51fa’nic‘\u3002<\/span><\/span>\n<\/div>\n
\n\t-t \u5728\u8f93\u51fa\u7684\u6bcf\u4e00\u884c\u4e0d\u6253\u5370\u65f6\u95f4\u6233\u3002\uff08\uff0dtt   -ttt\uff09<\/span><\/span>\n<\/div>\n
\n\t-O \u4e0d\u8fd0\u884c\u5206\u7ec4\u5206\u7ec4\u5339\u914d\uff08packet-matching\uff09\u4ee3\u7801\u4f18\u5316\u7a0b\u5e8f\u3002<\/span><\/span>\n<\/div>\n
\n\t-P \u4e0d\u5c06\u7f51\u7edc\u63a5\u53e3\u8bbe\u7f6e\u6210\u6df7\u6742\u6a21\u5f0f\u3002<\/span><\/span>\n<\/div>\n
\n\t-q \u5feb\u901f\u8f93\u51fa\u3002\u53ea\u8f93\u51fa\u8f83\u5c11\u7684\u534f\u8bae\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t-r \u4ece\u6307\u5b9a\u7684\u6587\u4ef6\u4e2d\u8bfb\u53d6\u5305(\u8fd9\u4e9b\u5305\u4e00\u822c\u901a\u8fc7-w\u9009\u9879\u4ea7\u751f)\u3002<\/span><\/span>\n<\/div>\n
\n\t-S \u5c06tcp\u7684\u5e8f\u5217\u53f7\u4ee5\u7edd\u5bf9\u503c\u5f62\u5f0f\u8f93\u51fa\uff0c\u800c\u4e0d\u662f\u76f8\u5bf9\u503c\u3002<\/span><\/span>\n<\/div>\n
\n\t-s \u4ece\u6bcf\u4e2a\u5206\u7ec4\u4e2d\u8bfb\u53d6\u6700\u5f00\u59cb\u7684snaplen\u4e2a\u5b57\u8282\uff0c\u800c\u4e0d\u662f\u9ed8\u8ba4\u768468\u4e2a\u5b57\u8282\u3002-s 0\u8868\u793a\u4e0d\u9650\u5236\u957f\u5ea6\uff0c\u8f93\u51fa\u6574\u4e2a\u5305\u3002<\/span><\/span>\n<\/div>\n
\n\t-T \u5c06\u76d1\u542c\u5230\u7684\u5305\u76f4\u63a5\u89e3\u91ca\u4e3a\u6307\u5b9a\u7684\u7c7b\u578b\u7684\u62a5\u6587\uff0c\u5e38\u89c1\u7684\u7c7b\u578b\u6709rpc\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff09\u548csnmp\uff08\u7b80\u5355\u7f51\u7edc\u7ba1\u7406\u534f\u8bae\uff1b\uff09\u3002<\/span><\/span>\n<\/div>\n
\n\t-t \u4e0d\u5728\u6bcf\u4e00\u884c\u4e2d\u8f93\u51fa\u65f6\u95f4\u6233\u3002<\/span><\/span>\n<\/div>\n
\n\t-tt \u5728\u6bcf\u4e00\u884c\u4e2d\u8f93\u51fa\u975e\u683c\u5f0f\u5316\u7684\u65f6\u95f4\u6233\u3002<\/span><\/span>\n<\/div>\n
\n\t-ttt \u8f93\u51fa\u672c\u884c\u548c\u524d\u9762\u4e00\u884c\u4e4b\u95f4\u7684\u65f6\u95f4\u5dee\u3002<\/span><\/span>\n<\/div>\n
\n\t-tttt \u5728\u6bcf\u4e00\u884c\u4e2d\u8f93\u51fa\u7531date\u5904\u7406\u7684\u9ed8\u8ba4\u683c\u5f0f\u7684\u65f6\u95f4\u6233\u3002<\/span><\/span>\n<\/div>\n
\n\t-u \u8f93\u51fa\u672a\u89e3\u7801\u7684NFS\u53e5\u67c4\u3002<\/span><\/span>\n<\/div>\n
\n\t-v \u8f93\u51fa\u4e00\u4e2a\u7a0d\u5fae\u8be6\u7ec6\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u5728ip\u5305\u4e2d\u53ef\u4ee5\u5305\u62ecttl\u548c\u670d\u52a1\u7c7b\u578b\u7684\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t-vv \u8f93\u51fa\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t-vv \u8f93\u51fa\u8be6\u7ec6\u7684\u62a5\u6587\u4fe1\u606f\u3002<\/span><\/span>\n<\/div>\n
\n\t-w \u76f4\u63a5\u5c06\u5206\u7ec4\u5199\u5165\u6587\u4ef6\u4e2d\uff0c\u800c\u4e0d\u662f\u4e0d\u5206\u6790\u5e76\u6253\u5370\u51fa\u6765\u3002 \uff08\u8f93\u51fa\u7684.pcap\u6587\u4ef6\u53ef\u4ee5\u5728windows\u4e2d\u7528wireshark\u6253\u5f00\uff0c\u8fdb\u884c\u8fdb\u4e00\u6b65\u5206\u6790\uff09<\/span><\/span>\n<\/div>\n
\n\t\u8981\u8ba9wireshark\u80fd\u5206\u6790tcpdump\u7684\u5305\uff0c\u5173\u952e\u7684\u5730\u65b9\u662f -s \u53c2\u6570\uff0c \u8fd8\u6709\u8981\u4e3a -w\u4fdd\u5b58\u8f93\u51fa\u6587\u4ef6\u3002<\/span><\/span>\n<\/div>\n
\n\t-X \u4ee5\u53ca-XX\uff0c\u4ee516\u8fdb\u5236\u4e0eASCII\u65b9\u5f0f\u8f93\u51fa\uff0c\u5373\u53ef\u8bfb\u65b9\u5f0f\u663e\u793a\u6570\u636e\u5305\uff0c\u9002\u5408http\u3001memcached ascii\u7b49\u660e\u6587\u4f20\u8f93\u7684\u534f\u8bae\uff0c\u53ef\u4ee5\u770b\u5230\u5185\u5bb9\uff1b<\/span><\/span>\n<\/div>\n
\n\t\u4e09\u3001tcpdump\u7684\u8868\u8fbe\u5f0f\u4ecb\u7ecd<\/span><\/span>\n<\/div>\n
\n\t\u8868\u8fbe\u5f0f\u662f\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\uff0ctcpdump\u5229\u7528\u5b83\u4f5c\u4e3a\u8fc7\u6ee4\u62a5\u6587\u7684\u6761\u4ef6\uff0c\u5982\u679c\u4e00\u4e2a\u62a5\u6587\u6ee1\u8db3\u8868 \u8fbe\u5f0f\u7684\u6761\u4ef6\uff0c\u5219\u8fd9\u4e2a\u62a5\u6587\u5c06\u4f1a\u88ab\u6355\u83b7\u3002\u5982\u679c\u6ca1\u6709\u7ed9\u51fa\u4efb\u4f55\u6761\u4ef6\uff0c\u5219\u7f51\u7edc\u4e0a\u6240\u6709\u7684\u4fe1\u606f\u5305 \u5c06\u4f1a\u88ab\u622a\u83b7\u3002<\/span><\/span>\n<\/div>\n
\n\t\u5728\u8868\u8fbe\u5f0f\u4e2d\u4e00\u822c\u5982\u4e0b\u51e0\u79cd\u7c7b\u578b\u7684\u5173\u952e\u5b57\uff1a<\/span><\/span>\n<\/div>\n
\n\t\u7b2c\u4e00\u79cd\u662f\u5173\u4e8e\u7c7b\u578b\u7684\u5173\u952e\u5b57\uff0c\u4e3b\u8981\u5305\u62echost\uff0cnet\uff0cport\uff0c\u4f8b\u5982 host 210.27.48.2\uff0c \u6307\u660e 210.27.48.2\u662f\u4e00\u53f0\u4e3b\u673a\uff0cnet 202.0.0.0\u6307\u660e202.0.0.0\u662f\u4e00\u4e2a\u7f51\u7edc\u5730\u5740\uff0cport 23 \u6307\u660e\u7aef\u53e3\u53f7\u662f23\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u7c7b\u578b\uff0c\u7f3a\u7701\u7684\u7c7b\u578b\u662fhost\u3002<\/span><\/span>\n<\/div>\n
\n\t\u7b2c\u4e8c\u79cd\u662f\u786e\u5b9a\u4f20\u8f93\u65b9\u5411\u7684\u5173\u952e\u5b57\uff0c\u4e3b\u8981\u5305\u62ecsrc\uff0cdst\uff0cdst or src\uff0cdst and src\uff0c \u8fd9\u4e9b\u5173\u952e\u5b57\u6307\u660e\u4e86\u4f20\u8f93\u7684\u65b9\u5411\u3002\u4e3e\u4f8b\u8bf4\u660e\uff0csrc 210.27.48.2 \uff0c\u6307\u660eip\u5305\u4e2d\u6e90\u5730\u5740\u662f 210.27.48.2 \uff0c dst net 202.0.0.0 \u6307\u660e\u76ee\u7684\u7f51\u7edc\u5730\u5740\u662f202.0.0.0\u3002\u5982\u679c\u6ca1\u6709\u6307\u660e\u65b9\u5411\u5173\u952e\u5b57\uff0c\u5219\u7f3a\u7701\u662fsrc or dst\u5173\u952e\u5b57\u3002<\/span><\/span>\n<\/div>\n
\n\t\u7b2c\u4e09\u79cd\u662f\u534f\u8bae\u7684\u5173\u952e\u5b57\uff0c\u4e3b\u8981\u5305\u62ecfddi\uff0cip\uff0carp\uff0crarp\uff0ctcp\uff0cudp\u7b49\u7c7b\u578b\u3002Fddi\u6307\u660e\u662f\u5728FDDI (\u5206\u5e03\u5f0f\u5149\u7ea4\u6570\u636e\u63a5\u53e3\u7f51\u7edc)\u4e0a\u7684\u7279\u5b9a\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u5b9e\u9645\u4e0a\u5b83\u662f”ether”\u7684\u522b\u540d\uff0cfddi\u548cether \u5177\u6709\u7c7b\u4f3c\u7684\u6e90\u5730\u5740\u548c\u76ee\u7684\u5730\u5740\uff0c\u6240\u4ee5\u53ef\u4ee5\u5c06fddi\u534f\u8bae\u5305\u5f53\u4f5cether\u7684\u5305\u8fdb\u884c\u5904\u7406\u548c\u5206\u6790\u3002 \u5176\u4ed6\u7684\u51e0\u4e2a\u5173\u952e\u5b57\u5c31\u662f\u6307\u660e\u4e86\u76d1\u542c\u7684\u5305\u7684\u534f\u8bae\u5185\u5bb9\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u4efb\u4f55\u534f\u8bae\uff0c\u5219tcpdump \u5c06\u4f1a \u76d1\u542c\u6240\u6709\u534f\u8bae\u7684\u4fe1\u606f\u5305\u3002<\/span><\/span>\n<\/div>\n
\n\t\u9664\u4e86\u8fd9\u4e09\u79cd\u7c7b\u578b\u7684\u5173\u952e\u5b57\u4e4b\u5916\uff0c\u5176\u4ed6\u91cd\u8981\u7684\u5173\u952e\u5b57\u5982\u4e0b\uff1agateway\uff0c broadcast\uff0cless\uff0c greater\uff0c \u8fd8\u6709\u4e09\u79cd\u903b\u8f91\u8fd0\u7b97\uff0c\u53d6\u975e\u8fd0\u7b97\u662f ‘not ‘ ‘! ‘\uff0c \u4e0e\u8fd0\u7b97\u662f’and’\uff0c’&&’;\u6216\u8fd0\u7b97\u662f’or’ \uff0c’||’\uff1b \u8fd9\u4e9b\u5173\u952e\u5b57\u53ef\u4ee5\u7ec4\u5408\u8d77\u6765\u6784\u6210\u5f3a\u5927\u7684\u7ec4\u5408\u6761\u4ef6\u6765\u6ee1\u8db3\u4eba\u4eec\u7684\u9700\u8981\u3002<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t\u4f8b\uff1a<\/span><\/span>\n<\/div>\n
\n\ttcpdump -i lo -nn -A -s 0 tcp -w \/home\/open\/1.txt  port 3306 and src host 112.142.34.24 and dst host 192.168.1.33<\/span><\/span>\n<\/div>\n
\n\ttcpdump -X -n -s 0 tcp port 8033 -i lo<\/span><\/span>\n<\/div>\n
\n\ttcpdump -A -n -x -s 0 tcp port 7430 and host 192.168.3.143<\/span><\/span>\n<\/div>\n
\n\ttcpdump -x -n -s 0 tcp port 9024 or 9021 or 9023 or 9020<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t\u56db\u3001\u8f93\u51fa\u7ed3\u679c\u4ecb\u7ecd<\/span><\/span>\n<\/div>\n
\n\t\u4e0b\u9762\u6211\u4eec\u4ecb\u7ecd\u51e0\u79cd\u5178\u578b\u7684tcpdump\u547d\u4ee4\u7684\u8f93\u51fa\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t(1) \u6570\u636e\u94fe\u8def\u5c42\u5934\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t\u4f7f\u7528\u547d\u4ee4\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump --e host ICE<\/span><\/span>\n<\/div>\n
\n\tICE \u662f\u4e00\u53f0\u88c5\u6709linux\u7684\u4e3b\u673a\u3002\u5b83\u7684MAC\u5730\u5740\u662f0\uff1a90\uff1a27\uff1a58\uff1aAF\uff1a1A H219\u662f\u4e00\u53f0\u88c5\u6709Solaris\u7684SUN\u5de5\u4f5c\u7ad9\u3002\u5b83\u7684MAC\u5730\u5740\u662f8\uff1a0\uff1a20\uff1a79\uff1a5B\uff1a46\uff1b \u4e0a\u4e00\u6761\u547d\u4ee4\u7684\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\u6240\u793a\uff1a<\/span><\/span>\n<\/div>\n
\n\t21:50:12.847509 eth0 < 8:0:20:79:5b:46 0:90:27:58:af:1a ip 60: h219.33357 > ICE.  telne t 0:0(0) ack 22535 win 8760 (DF)<\/span><\/span>\n<\/div>\n
\n\t21\uff1a50\uff1a12\u662f\u663e\u793a\u7684\u65f6\u95f4\uff0c 847509\u662fID\u53f7\uff0ceth0 <\u8868\u793a\u4ece\u7f51\u7edc\u63a5\u53e3eth0\u63a5\u6536\u8be5\u5206\u7ec4\uff0c eth0 >\u8868\u793a\u4ece\u7f51\u7edc\u63a5\u53e3\u8bbe\u5907\u53d1\u9001\u5206\u7ec4\uff0c 8:0:20:79:5b:46\u662f\u4e3b\u673aH219\u7684MAC\u5730\u5740\uff0c \u5b83\u8868\u660e\u662f\u4ece\u6e90\u5730\u5740H219\u53d1\u6765\u7684\u5206\u7ec4. 0:90:27:58:af:1a\u662f\u4e3b\u673aICE\u7684MAC\u5730\u5740\uff0c \u8868\u793a\u8be5\u5206\u7ec4\u7684\u76ee\u7684\u5730\u5740\u662fICE\u3002 ip \u662f\u8868\u660e\u8be5\u5206\u7ec4\u662fIP\u5206\u7ec4\uff0c60 \u662f\u5206\u7ec4\u7684\u957f\u5ea6\uff0c h219.33357 > ICE. telnet \u8868\u660e\u8be5\u5206\u7ec4\u662f\u4ece\u4e3b\u673aH219\u768433357\u7aef\u53e3\u53d1\u5f80\u4e3b\u673aICE\u7684 TELNET(23)\u7aef\u53e3\u3002 ack 22535 \u8868\u660e\u5bf9\u5e8f\u5217\u53f7\u662f222535\u7684\u5305\u8fdb\u884c\u54cd\u5e94\u3002 win 8760\u8868\u660e\u53d1 \u9001\u7a97\u53e3\u7684\u5927\u5c0f\u662f8760\u3002<\/span><\/span>\n<\/div>\n
\n\t(2) ARP\u5305\u7684tcpdump\u8f93\u51fa\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t\u4f7f\u7528\u547d\u4ee4\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump arp<\/span><\/span>\n<\/div>\n
\n\t\u5f97\u5230\u7684\u8f93\u51fa\u7ed3\u679c\u662f\uff1a<\/span><\/span>\n<\/div>\n
\n\t22:32:42.802509 eth0 > arp who-has route tell ICE (0:90:27:58:af:1a)<\/span><\/span>\n<\/div>\n
\n\t22:32:42.802902 eth0 < arp reply route is-at 0:90:27:12:10:66 (0:90:27:58:af:1a)<\/span><\/span>\n<\/div>\n
\n\t22:32:42\u662f\u65f6\u95f4\u6233\uff0c 802509\u662fID\u53f7\uff0c eth0 >\u8868\u660e\u4ece\u4e3b\u673a\u53d1\u51fa\u8be5\u5206\u7ec4\uff0carp\u8868\u660e\u662fARP\u8bf7\u6c42\u5305\uff0c who-has route tell ICE\u8868\u660e\u662f\u4e3b\u673aICE\u8bf7\u6c42\u4e3b\u673aroute\u7684MAC\u5730\u5740\u3002 0:90:27:58:af:1a\u662f\u4e3b\u673a ICE\u7684MAC\u5730\u5740\u3002<\/span><\/span>\n<\/div>\n
\n\t(3) TCP\u5305\u7684\u8f93\u51fa\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t\u7528tcpdump\u6355\u83b7\u7684TCP\u5305\u7684\u4e00\u822c\u8f93\u51fa\u4fe1\u606f\u662f\uff1a<\/span><\/span>\n<\/div>\n
\n\tsrc > dst: flags data-seqno ack window urgent options<\/span><\/span>\n<\/div>\n
\n\tsrc > dst:\u8868\u660e\u4ece\u6e90\u5730\u5740\u5230\u76ee\u7684\u5730\u5740\uff0c flags\u662fTCP\u62a5\u6587\u4e2d\u7684\u6807\u5fd7\u4fe1\u606f\uff0cS \u662fSYN\u6807\u5fd7\uff0c F (FIN)\uff0c P (PUSH) \uff0c R (RST) “.” (\u6ca1\u6709\u6807\u8bb0); data-seqno\u662f\u62a5\u6587\u4e2d\u7684\u6570\u636e \u7684\u987a\u5e8f\u53f7\uff0c ack\u662f\u4e0b\u6b21\u671f\u671b\u7684\u987a\u5e8f\u53f7\uff0c window\u662f\u63a5\u6536\u7f13\u5b58\u7684\u7a97\u53e3\u5927\u5c0f\uff0c urgent\u8868\u660e \u62a5\u6587\u4e2d\u662f\u5426\u6709\u7d27\u6025\u6307\u9488\u3002 Options\u662f\u9009\u9879\u3002<\/span><\/span>\n<\/div>\n
\n\t(4) UDP\u5305\u7684\u8f93\u51fa\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t\u7528tcpdump\u6355\u83b7\u7684UDP\u5305\u7684\u4e00\u822c\u8f93\u51fa\u4fe1\u606f\u662f\uff1a<\/span><\/span>\n<\/div>\n
\n\troute.port1 > ICE.port2: udp lenth<\/span><\/span>\n<\/div>\n
\n\tUDP\u5341\u5206\u7b80\u5355\uff0c\u4e0a\u9762\u7684\u8f93\u51fa\u884c\u8868\u660e\u4ece\u4e3b\u673aroute\u7684port1\u7aef\u53e3\u53d1\u51fa\u7684\u4e00\u4e2aUDP\u62a5\u6587 \u5230\u4e3b\u673aICE\u7684port2\u7aef\u53e3\uff0c\u7c7b\u578b\u662fUDP\uff0c \u5305\u7684\u957f\u5ea6\u662flenth\u3002<\/span><\/span>\n<\/div>\n
\n\t\u4e94\u3001\u4e3e\u4f8b<\/span><\/span>\n<\/div>\n
\n\t(1) \u60f3\u8981\u622a\u83b7\u6240\u6709210.27.48.1 \u7684\u4e3b\u673a\u6536\u5230\u7684\u548c\u53d1\u51fa\u7684\u6240\u6709\u7684\u5206\u7ec4\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump host 210.27.48.1<\/span><\/span>\n<\/div>\n
\n\t(2) \u60f3\u8981\u622a\u83b7\u4e3b\u673a210.27.48.1 \u548c\u4e3b\u673a210.27.48.2\u6216210.27.48.3\u7684\u901a\u4fe1\uff0c\u4f7f\u7528\u547d\u4ee4\uff08\u6ce8\u610f\uff1a\u62ec\u53f7\u524d\u7684\u53cd\u659c\u6760\u662f\u5fc5\u987b\u7684\uff09\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump host 210.27.48.1 and (210.27.48.2 or 210.27.48.3 )<\/span><\/span>\n<\/div>\n
\n\t(3) \u5982\u679c\u60f3\u8981\u83b7\u53d6\u4e3b\u673a210.27.48.1\u9664\u4e86\u548c\u4e3b\u673a210.27.48.2\u4e4b\u5916\u6240\u6709\u4e3b\u673a\u901a\u4fe1\u7684ip\u5305\uff0c\u4f7f\u7528\u547d\u4ee4\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump ip host 210.27.48.1 and ! 210.27.48.2<\/span><\/span>\n<\/div>\n
\n\t(4) \u5982\u679c\u60f3\u8981\u83b7\u53d6\u4e3b\u673a192.168.228.246\u63a5\u6536\u6216\u53d1\u51fa\u7684ssh\u5305\uff0c\u5e76\u4e14\u4e0d\u8f6c\u6362\u4e3b\u673a\u540d\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\uff1a<\/span><\/span>\n<\/div>\n
\n\t#tcpdump -nn -n src host 192.168.228.246 and port 22 and tcp<\/span><\/span>\n<\/div>\n
\n\t(5) \u83b7\u53d6\u4e3b\u673a192.168.228.246\u63a5\u6536\u6216\u53d1\u51fa\u7684ssh\u5305\uff0c\u5e76\u628amac\u5730\u5740\u4e5f\u4e00\u540c\u663e\u793a\uff1a<\/span><\/span>\n<\/div>\n
\n\t# tcpdump -e src host 192.168.228.246 and port 22 and tcp -n -nn<\/span><\/span>\n<\/div>\n
\n\t(6) \u8fc7\u6ee4\u7684\u662f\u6e90\u4e3b\u673a\u4e3a192.168.0.1\u4e0e\u76ee\u7684\u7f51\u7edc\u4e3a192.168.0.0\u7684\u62a5\u5934\uff1a<\/span><\/span>\n<\/div>\n
\n\ttcpdump src host 192.168.0.1 and dst net 192.168.0.0\/24<\/span><\/span>\n<\/div>\n
\n\t(7) \u8fc7\u6ee4\u6e90\u4e3b\u673a\u7269\u7406\u5730\u5740\u4e3aXXX\u7684\u62a5\u5934\uff1a<\/span><\/span>\n<\/div>\n
\n\ttcpdump ether src 00:50:04:BA:9B and dst……<\/span><\/span>\n<\/div>\n
\n\t\uff08\u4e3a\u4ec0\u4e48ether src\u540e\u9762\u6ca1\u6709host\u6216\u8005net\uff1f\u7269\u7406\u5730\u5740\u5f53\u7136\u4e0d\u53ef\u80fd\u6709\u7f51\u7edc\uff09\u3002<\/span><\/span>\n<\/div>\n
\n\t(8) \u8fc7\u6ee4\u6e90\u4e3b\u673a192.168.0.1\u548c\u76ee\u7684\u7aef\u53e3\u4e0d\u662ftelnet\u7684\u62a5\u5934\uff0c\u5e76\u5bfc\u5165\u5230tes.t.txt\u6587\u4ef6\u4e2d\uff1a<\/span><\/span>\n<\/div>\n
\n\tTcpdump src host 192.168.0.1 and dst port not telnet -l > test.txt<\/span><\/span>\n<\/div>\n
\n\tip icmp arp rarp \u548c tcp\u3001udp\u3001icmp\u8fd9\u4e9b\u9009\u9879\u7b49\u90fd\u8981\u653e\u5230\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u4f4d\u7f6e\uff0c\u7528\u6765\u8fc7\u6ee4\u6570\u636e\u62a5\u7684\u7c7b\u578b\u3002<\/span><\/span>\n<\/div>\n
\n\t\u4f8b\u9898\uff1a\u5982\u4f55\u4f7f\u7528tcpdump\u76d1\u542c\u6765\u81eaeth0\u9002\u914d\u5361\u4e14\u901a\u4fe1\u534f\u8bae\u4e3aport 22\uff0c\u76ee\u6807\u6765\u6e90\u4e3a192.168.1.100\u7684\u6570\u636e\u5305\u8d44\u6599\uff1f<\/span><\/span>\n<\/div>\n
\n\t\u7b54\uff1atcpdump -i eth0 -nn port 22 and src host 192.168.1.100<\/span><\/span>\n<\/div>\n
\n\t\u4f8b\u9898\uff1a\u5982\u4f55\u4f7f\u7528tcpdump\u6293\u53d6\u8bbf\u95eeeth0\u9002\u914d\u5361\u4e14\u8bbf\u95ee\u7aef\u53e3\u4e3atcp 9080\uff1f<\/span><\/span>\n<\/div>\n
\n\t\u7b54:tcpdump -i eth0 dst 172.168.70.35 and tcp port 9080<\/span><\/span>\n<\/div>\n
\n\t\u4f8b\u9898\uff1a\u5982\u4f55\u4f7f\u7528tcpdump\u6293\u53d6\u4e0e\u4e3b\u673a192.168.43.23\u6216\u7740\u4e0e\u4e3b\u673a192.168.43.24\u901a\u4fe1\u62a5\u6587\uff0c\u5e76\u4e14\u663e\u793a\u5728\u63a7\u5236\u53f0\u4e0a<\/span><\/span>\n<\/div>\n
\n\ttcpdump -X -s 1024 -i eth0 host (192.168.43.23 or 192.168.43.24) and  host 172.16.70.35<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t---------------------------------------------------------------------------------<\/span><\/span>\n<\/div>\n
\n\t\u8865\u5145\uff1a<\/span><\/span>\n<\/div>\n
\n\tSYNOPSIS<\/span><\/span>\n<\/div>\n
\n\t       tcpdump [ -AdDeflLnNOpqRStuUvxX ] [ -c count ]<\/span><\/span>\n<\/div>\n
\n\t               [ -C file_size ] [ -F file ]<\/span><\/span>\n<\/div>\n
\n\t               [ -i interface ] [ -m module ] [ -M secret ]<\/span><\/span>\n<\/div>\n
\n\t               [ -r file ] [ -s snaplen ] [ -T type ] [ -w file<\/span><\/span>\n<\/div>\n
\n\t       ]<\/span><\/span>\n<\/div>\n
\n\t               [ -W filecount ]<\/span><\/span>\n<\/div>\n
\n\t               [ -E spi@ipaddr algo:secret,...  ]<\/span><\/span>\n<\/div>\n
\n\t               [ -y datalinktype ] [ -Z user ]<\/span><\/span>\n<\/div>\n
\n\t               [ expression ]<\/span><\/span>\n<\/div>\n
\n\tc \u8bbe\u5b9a\u6293\u591a\u5c11\u4e2a\u5305\u540e\u81ea\u52a8\u505c\u6b62<\/span><\/span>\n<\/div>\n
\n\ts \u6307\u5b9a\u6293\u6bcf\u4e2a\u5305\u7684\u524d\u591a\u5c11\u5b57\u8282(\u9ed8\u8ba456\u5b57\u8282)<\/span><\/span>\n<\/div>\n
\n\tw \u4fdd\u5b58\u5230\u67d0\u4e2a\u6587\u4ef6<\/span><\/span>\n<\/div>\n
\n\tr \u8bfb\u6587\u4ef6<\/span><\/span>\n<\/div>\n
\n\tv \u663e\u793a\u66f4\u8be6\u7ec6<\/span><\/span>\n<\/div>\n
\n\tn \u4e0d\u663e\u793a\u4e3b\u673a\u540d,\u663e\u793aIP<\/span><\/span>\n<\/div>\n
\n\tnn \u4e5f\u628a\u7aef\u53e3\u663e\u793a\u4e3a\u6570\u503c,\u5426\u5219\u663e\u793a\u7aef\u53e3\u670d\u52a1\u540d<\/span><\/span>\n<\/div>\n
\n\ti \u6307\u5b9a\u54ea\u5757\u7f51\u5361<\/span><\/span>\n<\/div>\n
\n\thost \u6307\u5b9a\u67d0\u4e2a\u4e3b\u673a<\/span><\/span>\n<\/div>\n
\n\tport \u6307\u5b9a\u67d0\u4e2a\u7aef\u53e3<\/span><\/span>\n<\/div>\n
\n\tnet \u6307\u5b9a\u67d0\u4e2a\u7f51\u7edc<\/span><\/span>\n<\/div>\n
\n\ttcp \u6307\u5b9a\u6293tcp\u5305<\/span><\/span>\n<\/div>\n
\n\tudp \u6307\u5b9a\u6293udp\u5305<\/span><\/span>\n<\/div>\n
\n\tip \u6307\u5b9a\u6293ip\u5305<\/span><\/span>\n<\/div>\n
\n\ticmp \u6307\u5b9a\u6293icmp\u5305<\/span><\/span>\n<\/div>\n
\n\tsrc host \u6307\u5b9a\u6e90\u4e3b\u673a<\/span><\/span>\n<\/div>\n
\n\tdst host \u6307\u5b9a\u76ee\u7684\u4e3b\u673a<\/span><\/span>\n<\/div>\n
\n\tdst port \u6307\u5b9a\u76ee\u7684\u7aef\u53e3<\/span><\/span>\n<\/div>\n
\n\t\u5b9e\u4f8b \u6293164\u8bbf\u95ee\u672c\u573022\u7aef\u53e3\u7684\u5305 ,\u5355\u5411\u7684<\/span><\/span>\n<\/div>\n
\n\t[root@stu24 ~]# tcpdump -i eth0 -n src host 192.168.0.164 and dst port 22<\/span><\/span>\n<\/div>\n
\n\t\u6293164ping\u672c\u5730\u7684\u5305<\/span><\/span>\n<\/div>\n
\n\t[root@stu24 ~]# tcpdump -i eth0 -n icmp and src host 192.168.0.164<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t\u5f53\u7f51\u5361\u5de5\u4f5c\u4e8e\u6df7\u6742\u6a21\u5f0f\u91cc\u65f6<\/span><\/span>\n<\/div>\n
\n\t[root@stu24 ~]# tcpdump -i eth0 -n dst port 22 or dst port 80<\/span><\/span>\n<\/div>\n
\n\t\u6709\u53ef\u80fd\u6293\u5230\u522b\u4eba\u7684\u5305<\/span><\/span>\n<\/div>\n
\n\t\u6709\u4e2a\u5305\u53ef\u89e3\u51b3...\u4ee5\u540e\u8bf4<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t\u4e24\u79cd\u6761\u4ef6\u4e00\u8d77\u6293<\/span><\/span>\n<\/div>\n
\n\t[root@stu24 ~]# tcpdump -i eth0 -n 'src host 192.168.0.164 and dst port 22' or 'src host 192.168.0.4 and dst port 80'\u4e8c\u8005\u7b49\u4ef7<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t[root@stu24 ~]# tcpdump -i eth0 -n srchost192.168.0.164anddstport22 or srchost192.168.0.4anddstport80<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t\u8001\u5e08\u7b14\u8bb0<\/span><\/span>\n<\/div>\n
\n\ttcpdump -i eth0<\/span><\/span>\n<\/div>\n
\n\ttcpdump -i eth0 -v -n<\/span><\/span>\n<\/div>\n
\n\t                      \uff0dv \u663e\u793a\u5305\u542b\u6709TTL\uff0cTOS\u503c\u7b49\u7b49\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f<\/span><\/span>\n<\/div>\n
\n\t       \uff0dn\u4e0d\u8981\u505aIP\u89e3\u6790\u4e3a\u4e3b\u673a\u540d<\/span><\/span>\n<\/div>\n
\n\t      \uff0dnn\u4e0d\u505a\u540d\u5b57\u89e3\u6790\u548c\u7aef\u53e3\u89e3\u6790<\/span><\/span>\n<\/div>\n
\n\t\u66f4\u6709\u9488\u5bf9\u6027\u7684\u6293\u5305\uff1a<\/span><\/span>\n<\/div>\n
\n\t\u9488\u5bf9IP\uff0c\u7f51\u6bb5\uff0c\u7aef\u53e3\uff0c\u534f\u8bae<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn host 192.168.0.154<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn net 192.168.0.0\/24<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn port 22<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn  udp<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn icmp<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn arp<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn ip<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn src host 192.168.0.154<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn dst host 192.168.0.154<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn src port 22<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn src host 202.106.0.254 and dst port 22<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn src host 192.168.0.154 or port 22<\/span><\/span>\n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn src host 192.168.0.154 and not port 22<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t[root@ ftp]# tcpdump -i eth0 -vnn srchost192.168.0.2anddstport22 or   srchost192.168.0.65anddstport80<\/span><\/span>\n<\/div>\n
\n\t \n<\/div>\n
\n\t \n<\/div>\n
\n\t[root@ ~]# tcpdump -ieth0 -vnn -r  \/tmp\/fil1 tcp<\/span><\/span>\n<\/div>\n
\n\t[root@ ~]# tcpdump -ieth0 -vnn -r  \/tmp\/fil1 host  202.106.0.258<\/span><\/span>\n<\/div>\n
\n\t[root@ ~]# tcpdump -ieth0 -vnn -r  \/tmp\/fil1 tcp<\/span><\/span>\n<\/div>\n
\n\t[root@ ~]# tcpdump -ieth0 -vnn -w  \/tmp\/fil1 -c 100<\/span><\/span>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

 Linux\u64cd\u4f5c\u7cfb\u7edftcpdump\u6293\u5305\u5206\u6790\u8be6\u89e3   PS\uff1atcpdump\u662f\u4e00\u4e2a\u7528\u4e8e\u622a\u53d6\u7f51\u7edc\u5206\u7ec4\uff0c\u5e76\u8f93\u51fa\u5206\u7ec4\u5185\u5bb9\u7684\u5de5\u5177\uff0c\u7b80\u5355\u8bf4\u5c31\u662f\u6570\u636e\u5305\u6293\u5305\u5de5\u5177\u3002tcpdump\u51ed\u501f\u5f3a\u5927\u7684\u529f\u80fd\u548c\u7075\u6d3b\u7684\u622a\u53d6\u7b56\u7565\uff0c\u4f7f\u5176\u6210\u4e3aLinux\u7cfb\u7edf\u4e0b\u7528\u4e8e\u7f51\u7edc\u5206\u6790\u548c\u95ee\u9898\u6392\u67e5\u7684\u9996\u9009\u5de5\u5177\u3002 tcpdump\u63d0\u4f9b\u4e86\u6e90\u4ee3\u7801\uff0c\u516c\u5f00\u4e86\u63a5\u53e3\uff0c\u56e0\u6b64\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\u3002tcpdump\u5b58\u5728\u4e8e\u57fa\u672c\u7684Linux\u7cfb\u7edf\u4e2d\uff0c\u7531\u4e8e\u5b83\u9700\u8981\u5c06\u7f51\u7edc\u754c\u9762\u8bbe\u7f6e\u4e3a\u6df7\u6742\u6a21\u5f0f\uff0c\u666e\u901a\u7528\u6237\u4e0d\u80fd\u6b63\u5e38\u6267\u884c\uff0c\u4f46\u5177\u5907root\u6743\u9650\u7684\u7528\u6237\u53ef\u4ee5\u76f4\u63a5\u6267\u884c\u5b83\u6765\u83b7\u53d6\u7f51\u7edc\u4e0a\u7684\u4fe1\u606f\u3002\u56e0\u6b64\u7cfb\u7edf\u4e2d\u5b58\u5728\u7f51\u7edc\u5206\u6790\u5de5\u5177\u4e3b\u8981\u4e0d\u662f\u5bf9\u672c\u673a\u5b89\u5168\u7684\u5a01\u80c1\uff0c\u800c\u662f\u5bf9\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\u7684\u5b89\u5168\u5b58\u5728\u5a01\u80c1\u3002 \u4e00\u3001\u6982\u8ff0 \u987e\u540d\u601d\u4e49\uff0ctcpdump\u53ef\u4ee5\u5c06\u7f51\u7edc\u4e2d\u4f20\u9001\u7684\u6570\u636e\u5305\u7684“\u5934”\u5b8c\u5168\u622a\u83b7\u4e0b\u6765\u63d0\u4f9b\u5206\u6790\u3002\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\u4f9band\u3001or\u3001not\u7b49\u903b\u8f91\u8bed\u53e5\u6765\u5e2e\u52a9\u4f60\u53bb\u6389\u65e0\u7528\u7684\u4fe1\u606f\u3002   # tcpdump -vv tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 11:53:21.444591 IP (tos 0x10, ttl  64, id 19324, offset 0, flags [DF], proto 6, length: 92) asptest.localdomain.ssh > 192.168.228.244.1858: P 3962132600:3962132652(52) ack 2726525936 win 1266 asptest.localdomain.1077 > 192.168.228.153.domain: [bad udp cksum 166e!]  325+ PTR?…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-737","post","type-post","status-publish","format-standard","hentry","category-computer-network"],"aioseo_notices":[],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=737"}],"version-history":[{"count":4,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/737\/revisions"}],"predecessor-version":[{"id":1157,"href":"https:\/\/peloo.net\/index.php?rest_route=\/wp\/v2\/posts\/737\/revisions\/1157"}],"wp:attachment":[{"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/peloo.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}