{"id":2613,"date":"2020-01-08T16:31:06","date_gmt":"2020-01-08T07:31:06","guid":{"rendered":"http:\/\/suzushi.net\/?p=2613"},"modified":"2020-01-15T07:43:39","modified_gmt":"2020-01-14T22:43:39","slug":"post-2613","status":"publish","type":"post","link":"https:\/\/suzushi.net\/?p=2613","title":{"rendered":"TCP\/IP\u3092\u4f7f\u3063\u3066\u901a\u4fe1\u3059\u308b\u3002\u3056\u3063\u304f\u308a\u3068\u3057\u305f\u8aac\u660e"},"content":{"rendered":"<p>\u73fe\u5728\u3001\u69d8\u3005\u306a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3057\u3066\u3001\u305f\u304f\u3055\u3093\u306e\u60c5\u5831\u3092\u5171\u6709\u3057\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u306f\u305f\u304f\u3055\u3093\u306e\u60c5\u5831\u304c\u884c\u304d\u304b\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u308c\u3089\u306e\u60c5\u5831\u306f\u3069\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u9001\u4fe1\u3001\u53d7\u4fe1\u3055\u308c\u3066\u3044\u308b\u304b\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n<p>\u307b\u3068\u3093\u3069\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306fTCP\/IP\u3068\u3044\u3046\u5171\u901a\u306e\u30eb\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306eWeb\u30da\u30fc\u30b8\u3067\u306f\u3001TCP\/IP\u3092\u4f7f\u3063\u305f\u901a\u4fe1\u306e\u4ed5\u7d44\u307f\u3092\u3056\u3063\u304f\u308a\u3068\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3 id=\"outline__1\">\u901a\u4fe1\u306e\u30eb\u30fc\u30eb\u306f\u5fc5\u8981\uff1f<\/h3>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u8a71\u3092\u3059\u308b\u524d\u306b\u308f\u308c\u308f\u308c\u4eba\u9593\u306e\u901a\u4fe1\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u81ea\u5206\u306e\u8003\u3048\u3092\u76f8\u624b\u306b\u8a71\u3059\u5834\u9762\u3067\u3001<strong>\u76f8\u624b\u306b\u60c5\u5831\u3092\u4f1d\u3048\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u30eb\u30fc\u30eb\u3084\u4ed5\u7d44\u307f<\/strong>\u306f\u3044\u3063\u305f\u3044\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/42328.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2614\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/42328-300x218.png\" alt=\"\" width=\"300\" height=\"218\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001<strong>\u540c\u3058\u8a00\u8a9e<\/strong>\u3092\u4f7f\u3063\u3066\u3044\u308b\u3002<strong>\u540c\u3058\u3088\u3046\u306a\u57fa\u790e\u77e5\u8b58<\/strong>\u3092\u6301\u3063\u3066\u3044\u308b\u3002\u3068\u3044\u3046\u3053\u3068\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<br \/>\n\u307e\u305f\u3001\u9060\u304f\u96e2\u308c\u305f\u5834\u6240\u306b\u3044\u308b\u76f8\u624b\u3068\u901a\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001<strong>\u304a\u4e92\u3044\u306b\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3092\u6301\u3063\u3066\u3044\u308b<\/strong>\u3002\u306a\u3069\u9053\u5177\u3082\u5927\u4e8b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u76f8\u624b\u3068\u901a\u4fe1\u3057\u3066\u3001\u60c5\u5831\u3092\u4f1d\u3048\u308b\u305f\u3081\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u30eb\u30fc\u30eb\u3084\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u3067\u3001\u305d\u308c\u3092\u304a\u4e92\u3044\u304c\u5b88\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5927\u4e8b\u3067\u3059\u3002<\/p>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u5834\u5408\u3082\u540c\u3058\u3067\u3059\u3002<br \/>\n<span style=\"color: #000000;\"><strong>\u4f55\u304b\u3057\u3089\u306e\u30eb\u30fc\u30eb\u3084\u4ed5\u7d44\u307f\u3092\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\u304c\u5b88\u3063\u3066\u4f7f\u3046<\/strong>\u3053\u3068\u3067\u3001\u901a\u4fe1\u306b\u3088\u3063\u3066\u6b63\u3057\u304f\u30c7\u30fc\u30bf\u306e\u3084\u308a\u53d6\u308a\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\n<p>\u3067\u306f\u3001\u3069\u306e\u3088\u3046\u306a\u30eb\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u3068\u3066\u3082\u305f\u304f\u3055\u3093\u306e\u3053\u3068\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<br \/>\n\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\u3067\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u306b\u306f\u3001\u30c7\u30fc\u30bf\u3092\u8ee2\u9001\u3059\u308b\u7dda\u304c\u5fc5\u8981\u3067\u3059\u306d\u3002<br \/>\n\u3069\u3093\u306a\u30b1\u30fc\u30d6\u30eb\u3092\u4f7f\u3046\u306e\u304b\uff1f\u30b3\u30cd\u30af\u30bf\u306e\u5f62\u72b6\u306f\u6c7a\u3081\u3066\u304a\u304f\u306e\u304b\uff1f\u30c7\u30fc\u30bf\u3092\u96fb\u6c17\u4fe1\u53f7\u306b\u5909\u3048\u308b\u30eb\u30fc\u30eb\u306f\uff1f<br \/>\n\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u306f\u305f\u304f\u3055\u3093\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u305f\u304f\u3055\u3093\u3042\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u4e2d\u304b\u3089\u3001\u4e00\u3064\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3068\u6b63\u78ba\u306b\u901a\u4fe1\u3059\u308b\u306b\u306f\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u306a\u3069\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u6b63\u3057\u304f\u30c7\u30fc\u30bf\u8ee2\u9001\u3059\u308b\u306b\u306f\u3001\u6c7a\u3081\u3066\u304a\u304b\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u30eb\u30fc\u30eb\u306f\u3068\u3066\u3082\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u304f\u3055\u3093\u3042\u308a\u3059\u304e\u3066\u3084\u3084\u3053\u3057\u304f\u306a\u308b\u3068\u3001\u307f\u3093\u306a\u304c\u56f0\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001<strong>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u6301\u3064\u3079\u304d\u901a\u4fe1\u6a5f\u80fd\u3092\u5206\u985e\u3057\u305f\u30e2\u30c7\u30eb<\/strong>\u304c\u56fd\u969b\u6a19\u6e96\u5316\u6a5f\u69cb\u306b\u3088\u3063\u3066\u7b56\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3068\u8a00\u3044\u307e\u3059\u3002<\/p>\n<h3 id=\"outline__2\">OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3068TCP\/IP<\/h3>\n<p>OSI\u53c2\u7167\u30e2\u30c7\u30eb\u306f7\u3064\u306b\u5206\u304b\u308c\u3066\u3044\u307e\u3059\u3002\u4e0b\u306e\u56f3\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/795316b92fc766b0181f6fef074f03fa-1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2615\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/795316b92fc766b0181f6fef074f03fa-1-300x101.png\" alt=\"\" width=\"300\" height=\"101\" \/><\/a><\/p>\n<p>\u3053\u3046\u3057\u3066\u304a\u304f\u3053\u3068\u3068\u826f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u95a2\u4fc2\u306e\u6a5f\u5668\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u4f5c\u308b\u4f1a\u793e\u306f\u3001\u5168\u3066\u306e\u6a5f\u80fd\u3092\u542b\u3080\u5546\u54c1\u3092\u4f5c\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u5404\u5c64\u306b\u898f\u5b9a\u3055\u308c\u305f\u4ed5\u4e8b\u304c\u3067\u304d\u308b\u5546\u54c1\u3092\u4f5c\u308c\u3070\uff2f\uff2b\u3067\u3059\u3002\u3059\u3079\u3066\u306e\u77e5\u8b58\u30fb\u6280\u8853\u3092\u6301\u3063\u3066\u3044\u306a\u304f\u3066\u3082\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u88fd\u54c1\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n<h4 id=\"outline__2_1\">TCP\/IP\u3068\u306f\uff1f<\/h4>\n<p>TCP\/IP\u3044\u3046\u8a00\u8449\u3092\u805e\u3044\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<br \/>\n\u73fe\u5728\u4f7f\u308f\u308c\u3066\u3044\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u307b\u3068\u3093\u3069\u306f\u3001\u3053\u306eTCP\/IP\u3068\u547c\u3070\u308c\u308b\u30eb\u30fc\u30eb\u3092\u5b88\u3063\u3066\u901a\u4fe1\u3092\u6b63\u3057\u304f\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>TCP\/IP\u306f1970\u5e74\u4ee3\u306b\u4f5c\u3089\u308c\u307e\u3057\u305f\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304c\u4e00\u822c\u5e02\u6c11\u306b\u958b\u653e\u3055\u308c\u308b\u524d\u304b\u3089\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u901a\u4fe1\u306e\u6a19\u6e96\u30eb\u30fc\u30eb\u3068\u3057\u3066\u4f7f\u308f\u308c\u3066\u3044\u305f\u3053\u3068\u3082\u3042\u308a\u3001\u4eca\u3082\u305d\u306e\u307e\u307e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u901a\u4fe1\u306e\u6a19\u6e96\u30eb\u30fc\u30eb\u3068\u3057\u3066\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 id=\"outline__3\">TCP\/IP\u3068\u547c\u3076\u306e\u306f\u306a\u305c\u304b\uff1f<\/h3>\n<p><strong>TCP\u3068\u3044\u3046\u30eb\u30fc\u30eb\uff08\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u3068IP\u3068\u3044\u3046\u30eb\u30fc\u30eb\uff08\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306e2\u3064\u3092\u4f7f\u3063\u3066\u901a\u4fe1\u3092\u884c\u3046\u306e\u3067\u3001TCP\/IP\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n<p>TCP\u306f\u30c8\u30e9\u30f3\u30b9\u30df\u30c3\u30b7\u30e7\u30f3\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3067\u306f\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3068\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\nTCP\u3068\u3044\u3046\u901a\u4fe1\u30eb\u30fc\u30eb\u3092\u304a\u4e92\u3044\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u5b88\u3063\u3066\u4f7f\u3046\u3053\u3068\u3067\u3001<\/p>\n<ul>\n<li><strong>3\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u4f7f\u3063\u305f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u78ba\u7acb<\/strong><\/li>\n<li><strong>\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f7f\u3063\u305f\u901a\u4fe1<\/strong><\/li>\n<\/ul>\n<p>\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u306f\u5f8c\u3067\u3082\u3046\u5c11\u3057\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>IP\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3067\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\u3068\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\nIP\u3068\u3044\u3046\u901a\u4fe1\u30eb\u30fc\u30eb\u3092\u304a\u4e92\u3044\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u5b88\u3063\u3066\u4f7f\u3046\u3053\u3068\u3067\u3001<\/p>\n<ul>\n<li><strong>IP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u914d\u9001<\/strong><\/li>\n<\/ul>\n<p>\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001TCP\/IP\u3067\u306f\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5c64\u4ee5\u5916\u306e\u6a5f\u80fd\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u306a\u306e\u3067\u3001\u4ed6\u306e\u5c64\u306f\u3001\u4ed6\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3084\u88fd\u54c1\u304c\u62c5\u5f53\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u3067\u306fEthernet\u3068\u3044\u3046\u30eb\u30fc\u30eb\u3092\u4f7f\u3063\u305f\u88fd\u54c1\u3092\u826f\u304f\u898b\u304b\u3051\u307e\u3059\u3002<\/p>\n<h3 id=\"outline__4\">IP\u3092\u4f7f\u3063\u305f\u901a\u4fe1\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>IP\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306b\u3088\u3063\u3066\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f<\/p>\n<ul>\n<li><strong>\u30a2\u30c9\u30ec\u30b9\u51e6\u7406<\/strong><\/li>\n<li><strong>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u51e6\u7406\uff08\u5206\u5272\u3068\u518d\u69cb\u6210\uff09<\/strong><\/li>\n<li><strong>IP\u30d1\u30b1\u30c3\u30c8\u306e\u914d\u9001<\/strong><\/li>\n<\/ul>\n<p>\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/2b530e80c7d0de90885e285c5d798063-1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2620\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/2b530e80c7d0de90885e285c5d798063-1-300x135.png\" alt=\"\" width=\"300\" height=\"135\" \/><\/a><\/p>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306b\u914d\u7f6e\u3055\u308c\u305f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u3092\u8b58\u5225\u3059\u308b\u756a\u53f7\u304cIP\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002<br \/>\n\u300c210.58.9.132\u300d\u3068\u3044\u3046\u3088\u3046\u306a4\u3064\u306e\u6570\u5b57\u304cIP\u30a2\u30c9\u30ec\u30b9\u3068\u3057\u3066\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<br 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href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/c8856789ec11ab8b1013037cef6929f9-1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2621\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/c8856789ec11ab8b1013037cef6929f9-1-300x167.png\" alt=\"\" width=\"300\" height=\"167\" \/><\/a><\/p>\n<p>\u9001\u4fe1\u3057\u305f\u3044\u30c7\u30fc\u30bf\u306b\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3001\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u3092\u4ed8\u3051\u307e\u3059\u3002\u30c7\u30fc\u30bf\u304c\u5927\u304d\u3044\u5834\u5408\u306f\u5206\u5272\u3057\u3066\u3001\u756a\u53f7\u3092\u4ed8\u3051\u3066\u304a\u304d\u307e\u3059\u3002<br \/>\n\u3053\u308c\u3092\u76f8\u624b\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<br 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id=\"outline__5_1\">3\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u4f7f\u3063\u305f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u78ba\u7acb<\/h4>\n<p>\u307e\u305a\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u78ba\u7acb\u306b\u3064\u3044\u3066\u3001\u6211\u3005\u306e\u5834\u5408\u3092\u4f8b\u306b\u3057\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u4ed5\u4e8b\u3067\u8ab0\u304b\u306b\u96fb\u8a71\u3092\u3057\u307e\u3059\u3002\u6700\u521d\u306e\u5bfe\u5fdc\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/3a4f695a458cb0ac0aceaa2eb13ac2dd-1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2624\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/3a4f695a458cb0ac0aceaa2eb13ac2dd-1-300x99.png\" alt=\"\" width=\"300\" height=\"99\" 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\/>\nACK\u306f\u4e86\u627f\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002\u3064\u307e\u308a\u3001ACK+SYN\u306f\u300c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u79c1\u3082\u901a\u4fe1\u3057\u3066\u3044\u3044\u3067\u3059\u304b\uff1f\u300d\u3068\u3044\u3046\u611f\u3058\u3067\u3059\u304b\u306d\u3002<br \/>\n\u305d\u3057\u3066\u3001B\u306f\u81ea\u5206\u306e\u72b6\u614b\u3092SYN_RCV\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/94ed160662be198949535a112047e9b4.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2626\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/94ed160662be198949535a112047e9b4-300x87.png\" alt=\"\" width=\"300\" height=\"87\" \/><\/a><\/p>\n<p>A\u306fACK+SYN\u3092\u53d7\u3051\u53d6\u3063\u305f\u3089\u3001\u76f8\u624b\u304c\u901a\u4fe1\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<br 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width=\"784\" height=\"499\" \/><\/a><\/p>\n<p>http:\/\/www5e.biglobe.ne.jp\/%257eaji\/3min\/39.html<\/p>\n<\/div>\n<\/div>\n<h4 id=\"outline__5_2\">\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f7f\u3063\u305f\u901a\u4fe1<\/h4>\n<p>IP\u306e\u6a5f\u80fd\u3067\u3042\u308b\u3001\u30a2\u30c9\u30ec\u30b9\u51e6\u7406\u3092\u4f7f\u3046\u3053\u3068\u3067\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3078\u306e\u30c7\u30fc\u30bf\u9001\u4fe1\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\uff08IP\u306fOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u4e0b\u304b\u30893\u3064\u76ee\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5c64\u306a\u306e\u3067\u3001\u30ec\u30a4\u30e43\u3068\u3082\u8a00\u3044\u307e\u3059\u3002\uff09<\/p>\n<p>\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u306f\u4f55\u306e\u30c7\u30fc\u30bf\u306a\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u30e1\u30fc\u30eb\u30c7\u30fc\u30bf\u3068\u3057\u3066\u51e6\u7406\u3059\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u304b\uff1fWeb\u30da\u30fc\u30b8\u30c7\u30fc\u30bf\u3068\u3057\u3066\u51e6\u7406\u3059\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p>\u3069\u306e\u30bd\u30d5\u30c8\u30c7\u30fc\u30bf\u306a\u306e\u304b\uff1f\u3092\u5224\u65ad\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/e99cc3808964d9e08ec8fb27d43842de.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2635\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/e99cc3808964d9e08ec8fb27d43842de-300x131.png\" alt=\"\" width=\"300\" height=\"131\" \/><\/a><\/p>\n<p>\u3053\u308c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306bTCP\u3067\u306f\u9001\u4fe1\u30c7\u30fc\u30bf\u306b<strong>\u30dd\u30fc\u30c8\u756a\u53f7<\/strong>\u3068\u547c\u3070\u308c\u308b\u6570\u5b57\u3092\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002<br \/>\n\u30dd\u30fc\u30c8\u756a\u53f7\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u306e\u53d7\u4ed8\u756a\u53f7\u3067\u3059\u3002<br \/>\n\u3053\u306e\u756a\u53f7\u3092\u898b\u3066\u3001\u9001\u4fe1\u30c7\u30fc\u30bf\u304c\u3069\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u306e\u3082\u306e\u304b\uff1f\u3092\u5224\u65ad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u30e1\u30fc\u30eb\u30c7\u30fc\u30bf\u306e\u5834\u5408\u306f110\u756a\u3092\u53d7\u4ed8\u756a\u53f7\u3068\u3057\u307e\u3057\u3087\u3046\u3002<br \/>\n\u9001\u4fe1\u8005\u306f\u30c7\u30fc\u30bf\u306b\u30dd\u30fc\u30c8\u756a\u53f7110\u3092\u4ed8\u3051\u3066\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<p>\u53d7\u3051\u53d6\u3063\u305f\u5074\u306f\u30dd\u30fc\u30c8\u756a\u53f7110\u756a\u3092\u898b\u3066\u3001\u3042\u30fc\u30e1\u30fc\u30eb\u306e\u901a\u4fe1\u304b\u3041\u3002<br \/>\n\u3068\u308f\u304b\u308b\u306e\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/b1db37a1df6c6332fc8bdf704e9d1e49.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2636\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/b1db37a1df6c6332fc8bdf704e9d1e49-300x158.png\" alt=\"\" width=\"300\" height=\"158\" \/><\/a><\/p>\n<p>\u4ed6\u306b\u3082\u3001Web\u30da\u30fc\u30b8\u306e\u901a\u4fe1\u306f\u30dd\u30fc\u30c8\u756a\u53f780\u756a\u3092\u4f7f\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/1249f2682be7181f6a6266c99ee5cae6.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2637\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/1249f2682be7181f6a6266c99ee5cae6-300x135.png\" alt=\"\" width=\"300\" height=\"135\" \/><\/a><\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/ad328257df3c27d0237be29c2f1fd87c.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2638\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/ad328257df3c27d0237be29c2f1fd87c-300x150.png\" alt=\"\" width=\"300\" height=\"150\" \/><\/a><\/p>\n<p>\u901a\u4fe1\u3092\u3057\u305f\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u306b\u3088\u3063\u3066\u53d7\u4ed8\u756a\u53f7\u304c\u6c7a\u307e\u3063\u3066\u3044\u308c\u3070\u3001\u305d\u306e\u756a\u53f7\u3092\u4f7f\u3048\u3070OK\u3067\u3059\u3002<\/p>\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u306e\u53d7\u4ed8\u756a\u53f7\u2019\u30dd\u30fc\u30c8\u756a\u53f7\uff09\u306f\u3001\u53d7\u4fe1\u5074\u304c<strong>\u81ea\u5206\u3067\u6c7a\u3081\u308b<\/strong>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3067\u306f\u3001\u901a\u4fe1\u76f8\u624b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u53d7\u4ed8\u756a\u53f7\uff08\u30dd\u30fc\u30c8\u756a\u53f7\uff09\u306f\u3069\u3046\u3084\u3063\u3066\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p><a href=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/90b0dfa136419ccc91fda6fec27764ca.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-2639\" src=\"http:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/90b0dfa136419ccc91fda6fec27764ca-300x146.png\" alt=\"\" width=\"300\" height=\"146\" \/><\/a><\/p>\n<p>\u5b9f\u306f\u77e5\u308b\u65b9\u6cd5\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u306a\u306e\u3067\u9001\u4fe1\u8005\u306f\u3001\u3068\u308a\u3042\u3048\u305a\u7686\u304c\u77e5\u3063\u3066\u3044\u308b\u5171\u901a\u306e\u756a\u53f7\u3092\u4f7f\u3046\u3053\u3068\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5171\u901a\u306e\u756a\u53f7\u3092<br \/>\n<strong>Well Known Ports<\/strong>\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306b\u3001\u4ee3\u8868\u7684\u306a\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u8f09\u305b\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>TCP\/20\u00a0: FTP (\u30c7\u30fc\u30bf)<br \/>\nTCP\/21\u00a0: FTP (\u5236\u5fa1)<br \/>\nTCP\/22\u00a0: SSH<br \/>\nTCP\/23\u00a0: Telnet<br \/>\nTCP\/25\u00a0: SMTP<br \/>\nUDP\/53\u00a0: DNS<br \/>\nUDP\/67\u00a0: DHCP\uff08\u30b5\u30fc\u30d0\uff09<br \/>\nUDP\/68\u00a0: DHCP\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff09<br \/>\nTCP\/80\u00a0: HTTP<br \/>\nTCP\/110\u00a0: POP3<br \/>\nTCP\/143\u00a0: IMAP<br \/>\nTCP\/443\u00a0: HTTPS<br \/>\nTCP\/445\u00a0: \u30c0\u30a4\u30ec\u30af\u30c8\u30db\u30b9\u30c6\u30a3\u30f3\u30b0SMB\u30b5\u30fc\u30d3\u30b9<br \/>\nTCP\/587\u00a0: Submission\uff08\u30e1\u30fc\u30eb\u9001\u4fe1\uff09<\/p>\n<p>Web\u30da\u30fc\u30b8\u304c\u6b32\u3057\u3044\u3051\u3069\u3001\u76f8\u624b\u306e\u53d7\u4ed8\u756a\u53f7\uff08\u30dd\u30fc\u30c8\u756a\u53f7\uff09\u304c\u5206\u304b\u3089\u306a\u3044\u3002\u305d\u3046\u3044\u3046\u3068\u304d\u306bWell Known Ports\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\nWeb\u30da\u30fc\u30b8\u306f80\u756a\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u76f8\u624b\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u304c\u5206\u304b\u3089\u306a\u3044\u3051\u3069\u3001\u3068\u308a\u3042\u3048\u305a80\u756a\u3092\u4f7f\u3063\u3066\u901a\u4fe1\u3059\u308b\u3068Web\u30da\u30fc\u30b8\u306e\u901a\u4fe1\u3067\u3042\u308b\u3068\u5224\u65ad\u3055\u308c\u3066\u3001\u3046\u307e\u304f\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u3001\u7686\u304c\u77e5\u3063\u3066\u3044\u308b\u30dd\u30fc\u30c8\u756a\u53f7\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u77e5\u3089\u306a\u3044\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\u3067\u3082\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u59cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 id=\"outline__6\">\u307e\u3068\u3081<\/h3>\n<ol>\n<li><strong>TCP\/IP\u306b\u306fOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5c64\u306e\u6a5f\u80fd\u306e\u307f\u3042\u308a\u3001\u305d\u306e\u4ed6\u306f\u5b58\u5728\u3057\u306a\u3044\u3002<\/strong><\/li>\n<li><strong>IP\u3068\u3044\u3046\u5171\u901a\u30eb\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bfA\u3000\u304b\u3089\u3000\u30b3\u30f3\u30d4\u30e5\u30fc\u30bfB\u3000\u3068\u3044\u3046\u30c7\u30fc\u30bf\u914d\u9001\u3092\u9593\u9055\u3044\u306a\u304f\u884c\u3046\u3002<\/strong><\/li>\n<li><strong>TCP\u3068\u3044\u3046\u5171\u901a\u30eb\u30fc\u30eb\u3067\u306f\u30013\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u4f7f\u3063\u3066\u3001\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3057\u305f\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/strong><\/li>\n<li><strong>TCP\u3068\u3044\u3046\u5171\u901a\u30eb\u30fc\u30eb\u3067\u306f\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f7f\u3063\u3066\u3001\u9001\u4fe1\u30c7\u30fc\u30bf\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bd\u30d5\u30c8\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/strong><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u73fe\u5728\u3001\u69d8\u3005\u306a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3057\u3066\u3001\u305f\u304f\u3055\u3093\u306e\u60c5\u5831\u3092\u5171\u6709\u3057\u3066\u3044\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u306f\u305f\u304f\u3055\u3093\u306e\u60c5\u5831\u304c\u884c\u304d\u304b\u3063\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u60c5\u5831\u306f\u3069\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3092\u4f7f\u3063\u3066\u9001\u4fe1\u3001\u53d7\u4fe1\u3055\u308c\u3066\u3044\u308b\u304b\u77e5\u3063\u3066\u3044\u307e\u3059\u304b\uff1f \u307b\u3068\u3093\u3069\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306fTCP\/IP\u3068\u3044\u3046\u5171\u901a\u306e\u30eb\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002 \u3053\u306eWeb\u30da\u30fc\u30b8\u3067\u306f\u3001TCP\/IP\u3092\u4f7f\u3063\u305f\u901a\u4fe1\u306e\u4ed5\u7d44\u307f\u3092\u3056\u3063\u304f\u308a\u3068\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u901a\u4fe1\u306e\u30eb [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2624,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[74,5],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/suzushi.net\/wp-content\/uploads\/2020\/01\/3a4f695a458cb0ac0aceaa2eb13ac2dd-1.png","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8eErc-G9","_links":{"self":[{"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/posts\/2613"}],"collection":[{"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/suzushi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2613"}],"version-history":[{"count":15,"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/posts\/2613\/revisions"}],"predecessor-version":[{"id":2645,"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/posts\/2613\/revisions\/2645"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/suzushi.net\/index.php?rest_route=\/wp\/v2\/media\/2624"}],"wp:attachment":[{"href":"https:\/\/suzushi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/suzushi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/suzushi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}