{"id":13843,"date":"2023-08-17T06:49:22","date_gmt":"2023-08-16T21:49:22","guid":{"rendered":"https:\/\/lab4ict.com\/system\/?p=13843"},"modified":"2023-08-18T20:14:13","modified_gmt":"2023-08-18T11:14:13","slug":"tcpdump%e3%81%a7%e3%83%91%e3%82%b1%e3%83%83%e3%83%88%e3%82%ad%e3%83%a3%e3%83%97%e3%83%81%e3%83%a3%e3%81%99%e3%82%8b%ef%bc%81%ef%bc%88%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e5%87%ba%e5%8a%9b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/lab4ict.com\/system\/archives\/13843","title":{"rendered":"Tcpdump\u3067\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\uff01\uff08\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\uff09"},"content":{"rendered":"<p>TShark\u3067\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u5185\u5bb9\u3092\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\u3057\u307e\u3059\u3002<br \/>\n<!--more--><\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u5185\u5bb9\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3059\u308b\uff01<\/h2>\n<p>\u300c-w\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u5185\u5bb9\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; highlight: [1]; title: ; notranslate\" title=\"\">\r\n# tcpdump -c 3 -nn -i enp0s3 -w tcpdump.pcap\r\ndropped privs to tcpdump\r\ntcpdump: listening on enp0s3, link-type EN10MB (Ethernet), capture size 262144 bytes\r\n3 packets captured\r\n5 packets received by filter\r\n0 packets dropped by kernel\r\n<\/pre>\n<h2>\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u305f\u5185\u5bb9\u3092\u8868\u793a\u3059\u308b\uff01<\/h2>\n<p>\u300c-r\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u305f\u5185\u5bb9\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; highlight: [1]; title: ; notranslate\" title=\"\">\r\n# tcpdump -c 3 -nn -i enp0s3 -r tcpdump.pcap\r\nreading from file tcpdump.pcap, link-type EN10MB (Ethernet)\r\ndropped privs to tcpdump\r\n06:35:38.660096 IP 10.1.12.11.22 &gt; 10.1.1.1.38984: Flags &#x5B;P.], seq 2854398242:2854398390, ack 3637089997, win 341, options &#x5B;nop,nop,TS val 1338206734 ecr 3913169974], length 148\r\n06:35:38.660272 IP 10.1.1.1.38984 &gt; 10.1.12.11.22: Flags &#x5B;.], ack 148, win 9612, options &#x5B;nop,nop,TS val 3913169981 ecr 1338206734], length 0\r\n06:35:48.670069 IP 10.1.1.1.38984 &gt; 10.1.12.11.22: Flags &#x5B;P.], seq 1:53, ack 148, win 9612, options &#x5B;nop,nop,TS val 3913179990 ecr 1338206734], length 52\r\n<\/pre>\n<h2>\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\uff01<\/h2>\n<p>\u300c-C\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092MB\u5358\u4f4d\u3067\u6307\u5b9a\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; highlight: [1]; title: ; notranslate\" title=\"\">\r\n# tcpdump -nn -i enp0s3 -w \/tmp\/tcpdump.pcap -C 1\r\ndropped privs to tcpdump\r\ntcpdump: listening on enp0s3, link-type EN10MB (Ethernet), capture size 262144 bytes\r\n<\/pre>\n<h2>\u30d5\u30a1\u30a4\u30eb\u6570\u3092\u6307\u5b9a\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\uff01<\/h2>\n<p>\u300c-W\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u6570\u3092\u6307\u5b9a\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u540d\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u5f8c\u306b\u300c0\u300d\u304b\u3089\u9806\u756a\u306b\u6570\u5b57\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; highlight: [1]; title: ; notranslate\" title=\"\">\r\n# tcpdump -nn -i enp0s3 -w \/tmp\/tcpdump.pcap -C 1 -W 3\r\ndropped privs to tcpdump\r\ntcpdump: listening on enp0s3, link-type EN10MB (Ethernet), capture size 262144 bytes\r\n<\/pre>\n<h2>\u79d2\u6570\u3092\u6307\u5b9a\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\uff01<\/h2>\n<p>\u300c-G\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u79d2\u6570\u3092\u6307\u5b9a\u3057\u3066\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"brush: plain; highlight: [1]; title: ; notranslate\" title=\"\">\r\n# tcpdump -nn -i enp0s3 -w \/tmp\/tcpdump.pcap -W 1 -G 5\r\ndropped privs to tcpdump\r\ntcpdump: listening on enp0s3, link-type EN10MB (Ethernet), capture size 262144 bytes\r\nMaximum file limit reached: 1\r\n16 packets captured\r\n21 packets received by filter\r\n0 packets dropped by kernel\r\n<\/pre>\n<h2>\u304a\u308f\u308a\u306b<\/h2>\n<p>Tcpdump\u3067\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u5185\u5bb9\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u8a18\u4e8b<\/h2>\n<div class=\"sc_getpost\"><a class=\"clearfix\" href=\"https:\/\/lab4ict.com\/system\/archives\/13597\" ><div class=\"sc_getpost_thumb post-box-thumbnail__wrap\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODdhAQABAPAAAN3d3QAAACwAAAAAAQABAAACAkQBADs=\" width=\"150\" height=\"150\" alt=\"\u3010\u8a18\u4e8b\u4e00\u89a7\u3011Linux\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u3053\u306a\u3059\uff01\" loading=\"lazy\" data-src=\"https:\/\/lab4ict.com\/system\/wp-content\/uploads\/2021\/02\/fi_linux_01-150x150.png\" class=\"lazyload\"><\/div><div class=\"title\">\u3010\u8a18\u4e8b\u4e00\u89a7\u3011Linux\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u3053\u306a\u3059\uff01<\/div><div class=\"substr\">Linux\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u8a18\u4e8b\u4e00\u89a7\u3092\u63b2\u8f09\u3057\u307e\u3059\u3002...<\/div><\/a><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TShark\u3067\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u305f\u5185\u5bb9\u3092\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":5527,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[874],"tags":[915,408,415,642,491],"class_list":["post-13843","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network-linux","tag-tcpdump","tag-408","tag-415","tag-642","tag-491"],"_links":{"self":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/13843","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/comments?post=13843"}],"version-history":[{"count":5,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/13843\/revisions"}],"predecessor-version":[{"id":13876,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/13843\/revisions\/13876"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/media\/5527"}],"wp:attachment":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/media?parent=13843"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/categories?post=13843"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/tags?post=13843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}