{"id":6366,"date":"2025-09-02T19:53:56","date_gmt":"2025-09-02T10:53:56","guid":{"rendered":"https:\/\/venu-sys.co.jp\/jo-sys\/?p=6366"},"modified":"2025-09-02T19:53:58","modified_gmt":"2025-09-02T10:53:58","slug":"tcp%e3%81%a8%e3%81%af%ef%bc%9f%e4%bb%95%e7%b5%84%e3%81%bf%e3%82%84%e3%83%a1%e3%83%aa%e3%83%83%e3%83%88%e3%83%bb%e3%83%87%e3%83%a1%e3%83%aa%e3%83%83%e3%83%88%e3%80%81%e4%bb%96%e3%81%ae%e3%83%97","status":"publish","type":"post","link":"https:\/\/venu-sys.co.jp\/jo-sys\/6366\/","title":{"rendered":"TCP\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u3084\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306e\u9055\u3044\u3092\u89e3\u8aac"},"content":{"rendered":"<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>TCP\u3068\u306f\u3069\u3093\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>TCP\u3092\u5c0e\u5165\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"blue\"><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p>\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306f\u4f55\u304c\u7570\u306a\u308b\u306e\uff1f<\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p>TCP\u306f\u300cTransmission Control Protocol\u300d\u306e\u7565\u3067\u3001\u4fe1\u983c\u6027\u3092\u6700\u512a\u5148\u306b\u3057\u305f\u901a\u4fe1\u65b9\u5f0f\u3067\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u306e\u6b20\u843d\u3084\u9806\u5e8f\u306e\u4e71\u308c\u3092\u81ea\u52d5\u3067\u88dc\u6b63\u3057\u3001\u78ba\u5b9f\u306b\u30c7\u30fc\u30bf\u3092\u5c4a\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">TCP\u306e\u4ed5\u7d44\u307f\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3067\u304d\u308c\u3070\u3001\u306a\u305c\u30e1\u30fc\u30eb\u3084Web\u95b2\u89a7\u304c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u306e\u304b\u7d0d\u5f97\u3067\u304d\u308b\u306f\u305a<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001TCP\u304c\u3069\u306e\u3088\u3046\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u306a\u306e\u304b\u3001\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3001\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306e\u9055\u3044\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_announce\">\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u3001TCP\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u3001\u30e1\u30fc\u30eb\u3084Web\u30b5\u30a4\u30c8\u306e\u95b2\u89a7\u304c\u5b89\u5b9a\u3057\u3066\u304a\u3053\u306a\u3048\u308b\u7406\u7531\u306b\u3064\u3044\u3066\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u3068\u306f\u4fe1\u983c\u6027\u3092\u91cd\u8996\u3057\u305f\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u306f\uff1f-1024x576.png\" alt=\"TCP\u3068\u306f\uff1f\u306e\u753b\u50cf\" class=\"wp-image-6410\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u306f\uff1f-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u306f\uff1f-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u306f\uff1f-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u306f\uff1f.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\uff08Transmission Control Protocol\uff09\u306f\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u6700\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u901a\u4fe1\u65b9\u5f0f\u306e\u3072\u3068\u3064<\/span><\/span><\/strong>\u3067\u3059\u3002\u5927\u304d\u306a\u7279\u5fb4\u306f\u4fe1\u983c\u6027\u3092\u6700\u512a\u5148\u3059\u308b\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30c7\u30fc\u30bf\u3092\u5c0f\u3055\u306a\u30d1\u30b1\u30c3\u30c8\u306b\u5206\u5272\u3057\u3066\u9001\u4fe1\u3057\u3001\u53d7\u4fe1\u5074\u3067\u9806\u5e8f\u901a\u308a\u306b\u4e26\u3073\u66ff\u3048\u3001\u6b20\u843d\u304c\u3042\u308c\u3070\u518d\u9001\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u9014\u4e2d\u3067\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u305f\u308a\u7834\u640d\u3057\u3066\u3082\u6b63\u3057\u304f\u5fa9\u5143\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>Web\u30b5\u30a4\u30c8\u95b2\u89a7\u3084\u30e1\u30fc\u30eb\u9001\u4fe1\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306a\u3069\u3001\u78ba\u5b9f\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u901a\u4fe1\u306e\u591a\u304f\u306fTCP\u306b\u3088\u3063\u3066\u652f\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/IP\u5236\u9650\u3068\u306f-1024x576.png\" alt=\"TCP\u306e\u4ed5\u7d44\u307f\u306e\u753b\u50cf\" class=\"wp-image-6412\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/IP\u5236\u9650\u3068\u306f-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/IP\u5236\u9650\u3068\u306f-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/IP\u5236\u9650\u3068\u306f-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/IP\u5236\u9650\u3068\u306f.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\u306f\u300c\u63a5\u7d9a\u306e\u958b\u59cb\u304b\u3089\u7d42\u4e86\u307e\u3067\u306e\u624b\u9806\u300d\u3092\u9806\u5e8f\u7acb\u3066\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u9ad8\u3044\u4fe1\u983c\u6027\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u6d41\u308c\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box is-style-onborder_ttl2\"><div class=\"cap_box_ttl\" data-has-icon=\"1\"><svg height=\"1em\" width=\"1em\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" viewBox=\"0 0 48 48\"><path d=\"M32 46.5H16c-1.1 0-2-.9-2-2s.9-2 2-2h16c1.1 0 2 .9 2 2s-.9 2-2 2zM33.3 18.6c-.7 0-1.3-.5-1.5-1.2-.7-3.2-3.2-5.7-6.4-6.3-.8-.1-1.4-.9-1.2-1.7s.9-1.4 1.7-1.2c4.4.8 8 4.2 8.9 8.6.2.8-.4 1.6-1.2 1.8h-.3z\"><\/path><path d=\"M30 40.5H18c-2.2 0-4-1.8-4-4v-1.6c0-.6-.3-1.1-.8-1.5C8.4 29.8 5.7 24 6 18c.5-9.1 8-16.6 17.1-17C29 .8 34.5 3.2 38.2 8c1.8 2.3 3 5.1 3.5 7.9 1.1 6.8-1.5 13.3-6.9 17.4-.6.4-.9 1-.9 1.7v1.5c.1 2.2-1.7 4-3.9 4zM23.3 5c-7.1.3-12.9 6.2-13.3 13.2-.2 4.7 1.8 9.1 5.6 11.9 1.5 1.1 2.4 2.9 2.4 4.7v.6c0 .6.4 1 1 1h10c.6 0 1-.4 1-1V35c0-1.9.9-3.7 2.5-4.8 4.3-3.2 6.3-8.5 5.3-13.9-.4-2-1.2-3.8-2.4-5.4-3-4-7.4-6.1-12.1-5.9z\"><\/path><\/svg><span>TCP\u306e\u51e6\u7406\u306e\u6d41\u308c<\/span><\/div><div class=\"cap_box_content\">\n<ul class=\"wp-block-list is-style-num_circle\">\n<li>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u78ba\u7acb\uff083\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\uff09<br>SYN \u2192 SYN\/ACK \u2192 ACK \u306e3\u6bb5\u968e\u3067\u9001\u53d7\u4fe1\u306e\u6e96\u5099\u3092\u6574\u3048\u308b\u3002<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u9001\u4fe1<br>\u30c7\u30fc\u30bf\u3092\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5206\u5272\u3057\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u756a\u53f7\u3092\u4ed8\u4e0e\u3057\u3066\u9001\u4fe1\u3002\u53d7\u4fe1\u5074\u306f\u756a\u53f7\u306b\u57fa\u3065\u3044\u3066\u6b63\u3057\u3044\u9806\u5e8f\u306b\u4e26\u3079\u66ff\u3048\u308b\u3002<\/li>\n\n\n\n<li>\u78ba\u8a8d\u5fdc\u7b54\uff08ACK\uff09\u3068\u518d\u9001\u5236\u5fa1<br>\u53d7\u4fe1\u5074\u304c\u5404\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5bfe\u3057\u3066ACK\u3092\u8fd4\u3059\u3002\u5fdc\u7b54\u304c\u306a\u3051\u308c\u3070\u9001\u4fe1\u5074\u306f\u518d\u9001\u3092\u884c\u3046\u3002<\/li>\n\n\n\n<li>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u7d42\u4e86\uff084\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\uff09<br>FIN \u2192 ACK \u2192 FIN \u2192 ACK \u306e4\u6bb5\u968e\u3067\u63a5\u7d9a\u3092\u5b89\u5168\u306b\u5207\u65ad\u3059\u308b\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u4ed5\u7d44\u307f\u306b\u3088\u308a\u3001TCP\u306f\u9014\u4e2d\u3067\u30c7\u30fc\u30bf\u304c\u6b20\u843d\u3057\u305f\u308a\u9806\u756a\u304c\u4e71\u308c\u3066\u3082\u3001\u6b63\u78ba\u306a\u901a\u4fe1\u3092\u4fdd\u8a3c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\/IP\u3068\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u57fa\u76e4\u3092\u652f\u3048\u308b\u901a\u4fe1\u30e2\u30c7\u30eb<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP_IP\u3068\u306f\uff1f-1024x576.png\" alt=\"TCP\/IP\u3068\u306f\u306e\u753b\u50cf\" class=\"wp-image-6414\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP_IP\u3068\u306f\uff1f-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP_IP\u3068\u306f\uff1f-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP_IP\u3068\u306f\uff1f-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP_IP\u3068\u306f\uff1f.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\/IP\u306f\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u901a\u4fe1\u3092\u652f\u3048\u308b\u57fa\u672c\u30e2\u30c7\u30eb<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>IP\u304c\u5b9b\u5148\u306b\u30c7\u30fc\u30bf\u3092\u5c4a\u3051\u308b\u300c\u4f4f\u6240\u306e\u5f79\u5272\u300d\u3092\u62c5\u3044\u3001TCP\u304c\u5c4a\u3044\u305f\u30c7\u30fc\u30bf\u3092\u6b63\u3057\u3044\u9806\u5e8f\u3067\u5fa9\u5143\u3059\u308b\u300c\u54c1\u8cea\u4fdd\u8a3c\u306e\u5f79\u5272\u300d\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u4e8c\u3064\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001Web\u95b2\u89a7\u3084\u30e1\u30fc\u30eb\u9001\u4fe1\u306a\u3069\u306e\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u901a\u4fe1\u304c\u53ef\u80fd\u3067\u3059\u3002TCP\/IP\u306f\u968e\u5c64\u578b\u306e\u4ed5\u7d44\u307f\u3092\u6301\u3061\u3001\u5f79\u5272\u3092\u5206\u62c5\u3059\u308b\u3053\u3068\u3067\u67d4\u8edf\u306a\u62e1\u5f35\u6027\u3068\u4e92\u63db\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table style=\"font-size:12px;\" class=\"has-fixed-layout\"><thead><tr><th>\u5c64<\/th><th>\u4e3b\u306a\u30d7\u30ed\u30c8\u30b3\u30eb<\/th><th>\u5f79\u5272<\/th><\/tr><\/thead><tbody><tr><td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64<\/td><td>HTTP, SMTP, FTP<\/td><td>\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b<\/td><\/tr><tr><td>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64<\/td><td>TCP, UDP<\/td><td>\u4fe1\u983c\u6027\u3084\u901f\u5ea6\u3092\u5236\u5fa1<\/td><\/tr><tr><td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64<\/td><td>IP<\/td><td>\u5b9b\u5148\u6307\u5b9a\u3068\u914d\u9001<\/td><\/tr><tr><td>\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64<\/td><td>Ethernet, Wi-Fi<\/td><td>\u7269\u7406\u7684\u8ee2\u9001<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8-1-1024x576.png\" alt=\"TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306e\u753b\u50cf\" class=\"wp-image-6418\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8-1-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8-1-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8-1-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8-1.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box is-style-onborder_ttl2\"><div class=\"cap_box_ttl\" data-has-icon=\"1\"><svg height=\"1em\" width=\"1em\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" viewBox=\"0 0 48 48\"><path d=\"M32 46.5H16c-1.1 0-2-.9-2-2s.9-2 2-2h16c1.1 0 2 .9 2 2s-.9 2-2 2zM33.3 18.6c-.7 0-1.3-.5-1.5-1.2-.7-3.2-3.2-5.7-6.4-6.3-.8-.1-1.4-.9-1.2-1.7s.9-1.4 1.7-1.2c4.4.8 8 4.2 8.9 8.6.2.8-.4 1.6-1.2 1.8h-.3z\"><\/path><path d=\"M30 40.5H18c-2.2 0-4-1.8-4-4v-1.6c0-.6-.3-1.1-.8-1.5C8.4 29.8 5.7 24 6 18c.5-9.1 8-16.6 17.1-17C29 .8 34.5 3.2 38.2 8c1.8 2.3 3 5.1 3.5 7.9 1.1 6.8-1.5 13.3-6.9 17.4-.6.4-.9 1-.9 1.7v1.5c.1 2.2-1.7 4-3.9 4zM23.3 5c-7.1.3-12.9 6.2-13.3 13.2-.2 4.7 1.8 9.1 5.6 11.9 1.5 1.1 2.4 2.9 2.4 4.7v.6c0 .6.4 1 1 1h10c.6 0 1-.4 1-1V35c0-1.9.9-3.7 2.5-4.8 4.3-3.2 6.3-8.5 5.3-13.9-.4-2-1.2-3.8-2.4-5.4-3-4-7.4-6.1-12.1-5.9z\"><\/path><\/svg><span>TCP\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/span><\/div><div class=\"cap_box_content\">\n<ul class=\"wp-block-list is-style-check_list\">\n<li><a href=\"#toc1\">\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u3044<\/a><\/li>\n\n\n\n<li><a href=\"#toc2\">\u30a8\u30e9\u30fc\u691c\u51fa\u3068\u4fee\u6b63\u304c\u53ef\u80fd<\/a><\/li>\n\n\n\n<li><a href=\"#toc3\">\u51e6\u7406\u901f\u5ea6\u306b\u5408\u308f\u305b\u305f\u30d5\u30ed\u30fc\u5236\u5fa1\u304c\u53ef\u80fd<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc1\">\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u3044<\/h3>\n\n\n\n<p>TCP\u306f\u3001\u9001\u4fe1\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u70b9\u304c\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u901a\u4fe1\u306f\u9014\u4e2d\u3067\u30d1\u30b1\u30c3\u30c8\u304c\u6b20\u843d\u3057\u305f\u308a\u9806\u5e8f\u304c\u5165\u308c\u66ff\u308f\u308b\u3053\u3068\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u4eee\u306b\u88dc\u6b63\u304c\u304a\u3053\u306a\u308f\u308c\u306a\u3051\u308c\u3070\u3001Web\u30da\u30fc\u30b8\u304c\u5d29\u308c\u305f\u308a\u30d5\u30a1\u30a4\u30eb\u304c\u58ca\u308c\u305f\u308a\u3059\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">TCP\u306f\u3001\u30c7\u30fc\u30bf\u306e\u7834\u640d\u3092\u9632\u3050\u305f\u3081\u306b\u3082\u30d1\u30b1\u30c3\u30c8\u306b\u756a\u53f7\u3092\u632f\u3063\u3066\u9806\u5e8f\u3092\u7ba1\u7406\u3057\u3001\u53d7\u4fe1\u78ba\u8a8d\u3092\u884c\u3046\u4ed5\u7d44\u307f<\/span><\/span><\/strong>\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u6b20\u843d\u304c\u898b\u3064\u304b\u308c\u3070\u518d\u9001\u3092\u304a\u3053\u306a\u3044\u3001\u5b8c\u5168\u306a\u72b6\u614b\u306b\u5fa9\u5143\u3059\u308b\u305f\u3081\u3001\u5229\u7528\u8005\u306f\u4e0d\u5b89\u5b9a\u306a\u74b0\u5883\u3067\u3082\u5b89\u5b9a\u3057\u305f\u901a\u4fe1\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc2\">\u30a8\u30e9\u30fc\u691c\u51fa\u3068\u4fee\u6b63\u304c\u53ef\u80fd<\/h3>\n\n\n\n<p>TCP\u306f\u30c7\u30fc\u30bf\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306b\u3001\u9001\u4fe1\u3057\u305f\u60c5\u5831\u306b\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3068\u547c\u3070\u308c\u308b\u691c\u67fb\u5024\u3092\u4ed8\u4e0e\u3057\u307e\u3059\u3002\u53d7\u4fe1\u5074\u306f\u5c4a\u3044\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u691c\u8a3c\u3057\u3001\u5185\u5bb9\u306b\u8aa4\u308a\u304c\u3042\u308c\u3070\u518d\u9001\u3092\u8981\u6c42\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9014\u4e2d\u3067\u751f\u3058\u308b\u96fb\u6ce2\u5e72\u6e09\u3084\u30d1\u30b1\u30c3\u30c8\u7834\u640d\u3068\u3044\u3063\u305f\u5f71\u97ff\u306e\u6700\u5c0f\u5316\u304c\u53ef\u80fd<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc3\">\u51e6\u7406\u901f\u5ea6\u306b\u5408\u308f\u305b\u305f\u30d5\u30ed\u30fc\u5236\u5fa1\u304c\u53ef\u80fd<\/h3>\n\n\n\n<p>TCP\u306f\u3001\u901a\u4fe1\u306e\u5b89\u5b9a\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u30d5\u30ed\u30fc\u5236\u5fa1\u304c\u53ef\u80fd\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30d5\u30ed\u30fc\u5236\u5fa1\u306f\u9001\u4fe1\u5074\u304c\u76f8\u624b\u306e\u51e6\u7406\u80fd\u529b\u3092\u8003\u616e\u3057\u3001\u30c7\u30fc\u30bf\u3092\u9001\u308a\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u8abf\u6574\u3059\u308b\u6a5f\u80fd<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u3001\u53d7\u4fe1\u5074\u306e\u51e6\u7406\u304c\u8ffd\u3044\u3064\u304b\u306a\u3044\u72b6\u6cc1\u3067\u4e00\u65b9\u7684\u306b\u30c7\u30fc\u30bf\u3092\u9001\u308a\u7d9a\u3051\u308c\u3070\u3001\u30d0\u30c3\u30d5\u30a1\u304c\u3042\u3075\u308c\u3066\u30d1\u30b1\u30c3\u30c8\u306e\u7834\u68c4\u3084\u901a\u4fe1\u969c\u5bb3\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>TCP\u3067\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u30b5\u30a4\u30ba\u3068\u547c\u3070\u308c\u308b\u5236\u5fa1\u5024\u3092\u7528\u3044\u3066\u3001\u76f8\u624b\u304c\u51e6\u7406\u3067\u304d\u308b\u7bc4\u56f2\u306b\u5408\u308f\u305b\u3066\u8ee2\u9001\u91cf\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u901a\u4fe1\u74b0\u5883\u304c\u4e0d\u5b89\u5b9a\u3067\u3082\u5b89\u5b9a\u3057\u305f\u3084\u308a\u53d6\u308a\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8-1024x576.png\" alt=\"TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8\u306e\u753b\u50cf\" class=\"wp-image-6420\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box is-style-onborder_ttl2\"><div class=\"cap_box_ttl\" data-has-icon=\"1\"><svg height=\"1em\" width=\"1em\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" viewBox=\"0 0 48 48\"><path d=\"M32 46.5H16c-1.1 0-2-.9-2-2s.9-2 2-2h16c1.1 0 2 .9 2 2s-.9 2-2 2zM33.3 18.6c-.7 0-1.3-.5-1.5-1.2-.7-3.2-3.2-5.7-6.4-6.3-.8-.1-1.4-.9-1.2-1.7s.9-1.4 1.7-1.2c4.4.8 8 4.2 8.9 8.6.2.8-.4 1.6-1.2 1.8h-.3z\"><\/path><path d=\"M30 40.5H18c-2.2 0-4-1.8-4-4v-1.6c0-.6-.3-1.1-.8-1.5C8.4 29.8 5.7 24 6 18c.5-9.1 8-16.6 17.1-17C29 .8 34.5 3.2 38.2 8c1.8 2.3 3 5.1 3.5 7.9 1.1 6.8-1.5 13.3-6.9 17.4-.6.4-.9 1-.9 1.7v1.5c.1 2.2-1.7 4-3.9 4zM23.3 5c-7.1.3-12.9 6.2-13.3 13.2-.2 4.7 1.8 9.1 5.6 11.9 1.5 1.1 2.4 2.9 2.4 4.7v.6c0 .6.4 1 1 1h10c.6 0 1-.4 1-1V35c0-1.9.9-3.7 2.5-4.8 4.3-3.2 6.3-8.5 5.3-13.9-.4-2-1.2-3.8-2.4-5.4-3-4-7.4-6.1-12.1-5.9z\"><\/path><\/svg><span>TCP\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30e1\u30ea\u30c3\u30c8<\/span><\/div><div class=\"cap_box_content\">\n<ul class=\"wp-block-list is-style-check_list\">\n<li><a href=\"#toc4\">\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u304f\u306a\u308b<\/a><\/li>\n\n\n\n<li><a href=\"#toc5\">\u30c7\u30fc\u30bf\u306e\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc4\">\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u304f\u306a\u308b<\/h3>\n\n\n\n<p>TCP\u306f\u9ad8\u3044\u4fe1\u983c\u6027\u3092\u5b9f\u73fe\u3059\u308b\u4e00\u65b9\u3067\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u5236\u5fa1\u6a5f\u80fd\u306e\u591a\u3055\u304c\u901a\u4fe1\u306e\u52b9\u7387\u3092\u4e0b\u3052\u308b\u539f\u56e0\u306b\u3082\u306a\u308b\u70b9\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30c7\u30fc\u30bf\u9001\u4fe1\u6642\u306b\u306f\u78ba\u8a8d\u5fdc\u7b54\u3084\u518d\u9001\u3001\u9806\u5e8f\u5236\u5fa1\u306a\u3069\u8907\u96d1\u306a\u51e6\u7406\u304c\u304a\u3053\u306a\u308f\u308c\u308b\u305f\u3081\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5897\u52a0\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u304f\u306a\u308b\u3068\u3001\u901a\u4fe1\u901f\u5ea6\u306e\u4f4e\u4e0b\u3084\u9045\u5ef6\u306b\u3064\u306a\u304c\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0\u3084\u97f3\u58f0\u901a\u8a71\u3067\u306f\u3001\u4fe1\u983c\u6027\u3088\u308a\u901f\u5ea6\u3092\u512a\u5148\u3059\u308bUDP\u304c\u63a1\u7528\u3055\u308c\u308b\u3053\u3068\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc5\">\u30c7\u30fc\u30bf\u306e\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/h3>\n\n\n\n<p>TCP\u306f\u4fe1\u983c\u6027\u3092\u512a\u5148\u3059\u308b\u305f\u3081\u3001\u78ba\u8a8d\u5fdc\u7b54\u3084\u518d\u9001\u5236\u5fa1\u3068\u3044\u3063\u305f\u8907\u96d1\u306a\u51e6\u7406\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30c7\u30fc\u30bf\u306e\u6b63\u78ba\u6027\u306f\u9ad8\u307e\u308b\u53cd\u9762\u3001TCP\u306e\u78ba\u8a8d\u5fdc\u7b54\u3084\u518d\u9001\u5236\u5fa1\u3068\u3044\u3063\u305f\u4ed5\u7d44\u307f\u306f\u3001\u901a\u4fe1\u306b\u9045\u5ef6\u3092\u767a\u751f\u3055\u305b\u308b\u8981\u56e0<\/span><\/span><\/strong>\u3068\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u52d5\u753b\u914d\u4fe1\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0\u306e\u3088\u3046\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u304c\u91cd\u8996\u3055\u308c\u308b\u5834\u9762\u3067\u306f\u3001\u6570\u767e\u30df\u30ea\u79d2\u306e\u9045\u5ef6\u3067\u3082\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>TCP\u306f\u5b89\u5b9a\u6027\u306b\u512a\u308c\u308b\u4e00\u65b9\u3067\u3001\u901f\u5ea6\u9762\u3067\u306f\u5fc5\u305a\u3057\u3082\u6700\u9069\u3067\u306f\u306a\u3044\u3053\u3068\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306e\u9055\u3044<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044-1024x576.png\" alt=\"TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044\u306e\u753b\u50cf\" class=\"wp-image-6422\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u3068\u4ed6\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001TCP\u3068\u3088\u304f\u6bd4\u8f03\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3064\u3044\u3066\u305d\u308c\u305e\u308c\u9055\u3044\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p>TCP\u304c\u78ba\u8a8d\u5fdc\u7b54\u3084\u518d\u9001\u5236\u5fa1\u306b\u3088\u3063\u3066\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">UDP\u306f\u300c\u9001\u3063\u305f\u3089\u9001\u308a\u3063\u3071\u306a\u3057\u300d\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u4ed5\u7d44\u307f<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5c0f\u3055\u304f\u3001\u9045\u5ef6\u3082\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002UDP\u306f\u4ed5\u7d44\u307f\u4e0a\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001VoIP\u306a\u3069\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u304c\u91cd\u8981\u306a\u7528\u9014\u3067\u591a\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3067\u4fe1\u983c\u6027\u304c\u62c5\u4fdd\u3055\u308c\u306a\u3044\u305f\u3081\u3001<strong>\u6b63\u78ba\u6027\u304c\u6c42\u3081\u3089\u308c\u308bWeb\u901a\u4fe1\u3084\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306b\u306f\u4e0d\u5411\u304d<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table style=\"font-size:12px;\" class=\"has-fixed-layout\"><thead><tr><th>\u7279\u5fb4<\/th><th>TCP<\/th><th>UDP<\/th><\/tr><\/thead><tbody><tr><td>\u901a\u4fe1\u65b9\u5f0f<\/td><td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u578b<\/td><td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u578b<\/td><\/tr><tr><td>\u4fe1\u983c\u6027<\/td><td>\u9ad8\u3044\uff08\u518d\u9001\u30fb\u9806\u5e8f\u5236\u5fa1\u3042\u308a\uff09<\/td><td>\u4f4e\u3044\uff08\u78ba\u8a8d\u5fdc\u7b54\u306a\u3057\uff09<\/td><\/tr><tr><td>\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/td><td>\u5927\u304d\u3044<\/td><td>\u5c0f\u3055\u3044<\/td><\/tr><tr><td>\u9069\u3057\u305f\u7528\u9014<\/td><td>Web\u3001\u30e1\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001<\/td><td>\u30b2\u30fc\u30e0\u3001\u52d5\u753b\u914d\u4fe1\u3001\u97f3\u58f0\u901a\u8a71<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">SCTP\u3068\u306e\u6bd4\u8f03<\/h3>\n\n\n\n<p>SCTP\uff08Stream Control Transmission Protocol\uff09\u306f\u3001TCP\u3068UDP\u306e\u4e21\u65b9\u306e\u7279\u5fb4\u3092\u53d6\u308a\u5165\u308c\u305f\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">TCP\u306e\u3088\u3046\u306b\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3057\u3066\u4fe1\u983c\u6027\u3092\u62c5\u4fdd\u3057\u3064\u3064\u3001UDP\u306e\u3088\u3046\u306b\u8907\u6570\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u540c\u6642\u306b\u6271\u3048\u308b\u67d4\u8edf\u6027<\/span><\/span><\/strong>\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30de\u30eb\u30c1\u30b9\u30c8\u30fc\u30ea\u30df\u30f3\u30b0\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u304a\u308a\u3001\u4e00\u90e8\u306e\u30c7\u30fc\u30bf\u304c\u9045\u5ef6\u3057\u3066\u3082\u4ed6\u306e\u901a\u4fe1\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u30de\u30eb\u30c1\u30db\u30fc\u30df\u30f3\u30b0\u6a5f\u80fd\u306b\u3088\u308a\u3001\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u8def\u3092\u4f7f\u3063\u3066\u5197\u9577\u6027\u3092\u78ba\u4fdd\u3067\u304d\u308b\u70b9\u3082\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u306b\u306f\u3069\u306e\u3088\u3046\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u304c\u3042\u308b\uff1f<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u306b\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd-1024x576.png\" alt=\"TCP\u3067\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u306e\u753b\u50cf\" class=\"wp-image-6424\" style=\"width:640px\" srcset=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u306b\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd-1024x576.png 1024w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u306b\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd-300x169.png 300w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u306b\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd-768x432.png 768w, https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/TCP\u306b\u4f7f\u7528\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>TCP\u81ea\u4f53\u306b\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u306f\u5099\u308f\u3063\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u4f7f\u7528\u6642\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"swell-block-capbox cap_box is-style-onborder_ttl2\"><div class=\"cap_box_ttl\" data-has-icon=\"1\"><svg height=\"1em\" width=\"1em\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" viewBox=\"0 0 48 48\"><path d=\"M32 46.5H16c-1.1 0-2-.9-2-2s.9-2 2-2h16c1.1 0 2 .9 2 2s-.9 2-2 2zM33.3 18.6c-.7 0-1.3-.5-1.5-1.2-.7-3.2-3.2-5.7-6.4-6.3-.8-.1-1.4-.9-1.2-1.7s.9-1.4 1.7-1.2c4.4.8 8 4.2 8.9 8.6.2.8-.4 1.6-1.2 1.8h-.3z\"><\/path><path d=\"M30 40.5H18c-2.2 0-4-1.8-4-4v-1.6c0-.6-.3-1.1-.8-1.5C8.4 29.8 5.7 24 6 18c.5-9.1 8-16.6 17.1-17C29 .8 34.5 3.2 38.2 8c1.8 2.3 3 5.1 3.5 7.9 1.1 6.8-1.5 13.3-6.9 17.4-.6.4-.9 1-.9 1.7v1.5c.1 2.2-1.7 4-3.9 4zM23.3 5c-7.1.3-12.9 6.2-13.3 13.2-.2 4.7 1.8 9.1 5.6 11.9 1.5 1.1 2.4 2.9 2.4 4.7v.6c0 .6.4 1 1 1h10c.6 0 1-.4 1-1V35c0-1.9.9-3.7 2.5-4.8 4.3-3.2 6.3-8.5 5.3-13.9-.4-2-1.2-3.8-2.4-5.4-3-4-7.4-6.1-12.1-5.9z\"><\/path><\/svg><span>TCP\u306b\u642d\u8f09\u3055\u308c\u305f\u6a5f\u80fd<\/span><\/div><div class=\"cap_box_content\">\n<ul class=\"wp-block-list is-style-check_list\">\n<li><a href=\"#toc6\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a><\/li>\n\n\n\n<li><a href=\"#toc7\">IPS\/IDS<\/a><\/li>\n\n\n\n<li><a href=\"#toc8\">TLS<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u305d\u308c\u305e\u308c\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc6\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/h3>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001TCP\u901a\u4fe1\u3092\u5b89\u5168\u306b\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3067\u3059\u3002<\/p>\n\n\n\n<p>TCP\u3067\u306f\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u7528\u3044\u3066\u901a\u4fe1\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u304c\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306fTCP\u306e\u30dd\u30fc\u30c8\u3092\u57fa\u6e96\u306b\u901a\u4fe1\u3092\u8a31\u53ef\u307e\u305f\u306f\u62d2\u5426\u3057\u307e\u3059<\/span><\/span><\/strong>\u3002<\/p>\n\n\n\n<p>\u4e0d\u8981\u306a\u30dd\u30fc\u30c8\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306b\u3088\u308b\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc7\">IPS\/IDS<\/h3>\n\n\n\n<p>IDS\u306f\u3001TCP\u901a\u4fe1\u3092\u76e3\u8996\u3057\u3066\u4e0d\u6b63\u306a\u30a2\u30af\u30bb\u30b9\u3084\u7570\u5e38\u306a\u6319\u52d5\u3092\u691c\u77e5\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u5927\u91cf\u306e\u63a5\u7d9a\u8981\u6c42\u3084\u4e0d\u81ea\u7136\u306a\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30f3\u3092\u691c\u51fa\u3057\u3001\u7ba1\u7406\u8005\u306b\u30a2\u30e9\u30fc\u30c8\u3092\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u306eIPS\u306f\u3001\u691c\u77e5\u3060\u3051\u3067\u306a\u304f\u81ea\u52d5\u7684\u306b\u4e0d\u6b63\u901a\u4fe1\u3092\u906e\u65ad\u3059\u308b\u6a5f\u80fd\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u653b\u6483\u3092\u672a\u7136\u306b\u9632\u304e\u307e\u3059\u3002<\/p>\n\n\n\n<p>IPS\u3084IDS\u3092\u5c0e\u5165\u3059\u308c\u3070\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u4e0d\u6b63\u306a\u52d5\u304d\u3092\u691c\u51fa\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u9632\u6b62\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd<\/span><\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc8\">TLS<\/h3>\n\n\n\n<p>TLS\u306f\u3001<strong><span class=\"swl-marker mark_yellow\"><span class=\"swl-inline-color has-swl-deep-01-color\">TCP\u901a\u4fe1\u306e\u4e0a\u306b\u6697\u53f7\u5316\u3092\u65bd\u3057\u3001\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308b\u6280\u8853<\/span><\/span><\/strong>\u3067\u3059\u3002TCP\u5358\u4f53\u3067\u306f\u30c7\u30fc\u30bf\u304c\u5e73\u6587\u3067\u6d41\u308c\u308b\u305f\u3081\u3001\u76d7\u8074\u3084\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>TLS\u3092\u5c0e\u5165\u3057\u3066\u304a\u3051\u3070\u3001\u901a\u4fe1\u5185\u5bb9\u306f\u6697\u53f7\u5316\u3055\u308c\u3001\u7b2c\u4e09\u8005\u304c\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u3063\u305f\u308a\u6539\u3056\u3093\u3059\u308b\u3053\u3068\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002Web\u901a\u4fe1\u306b\u304a\u3044\u3066\u306f\u3001HTTPS\u304cTLS\u3092\u5229\u7528\u3059\u308b\u4ee3\u8868\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081 | TCP\u306f\u4fe1\u983c\u6027\u3092\u512a\u5148\u3059\u308b\u901a\u4fe1\u306b\u6b20\u304b\u305b\u306a\u3044\u30d7\u30ed\u30c8\u30b3\u30eb<\/h2>\n\n\n\n<p>TCP\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u9806\u5e8f\u5236\u5fa1\u3084\u518d\u9001\u6a5f\u80fd\u306b\u3088\u308a\u4fe1\u983c\u6027\u3092\u6700\u512a\u5148\u3059\u308b\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002Web\u95b2\u89a7\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u306a\u3069\u6b63\u78ba\u6027\u304c\u4e0d\u53ef\u6b20\u306a\u30b5\u30fc\u30d3\u30b9\u306fTCP\u306a\u3057\u306b\u306f\u6210\u308a\u7acb\u3061\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3067\u9045\u5ef6\u3084\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u8ab2\u984c\u3082\u3042\u308b\u305f\u3081\u3001\u7528\u9014\u306b\u3088\u3063\u3066\u306fUDP\u3084SCTP\u304c\u9078\u3070\u308c\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>TCP\u306f\u4fe1\u983c\u6027\u3092\u512a\u5148\u3059\u308b\u901a\u4fe1\u306b\u6b20\u304b\u305b\u306a\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b\u3053\u3068\u3092\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TCP\u306f\u300cTransmission Control Protocol\u300d\u306e\u7565\u3067\u3001\u4fe1\u983c\u6027\u3092\u6700\u512a\u5148\u306b\u3057\u305f\u901a\u4fe1\u65b9\u5f0f\u3067\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u306e\u6b20\u843d\u3084\u9806\u5e8f\u306e\u4e71\u308c\u3092\u81ea\u52d5\u3067\u88dc\u6b63\u3057\u3001\u78ba\u5b9f\u306b\u30c7\u30fc\u30bf\u3092\u5c4a\u3051\u307e\u3059\u3002 TCP\u306e\u4ed5\u7d44\u307f\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3067\u304d\u308c\u3070\u3001\u306a\u305c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6409,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-6366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infrastructure"],"jetpack_featured_media_url":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2025\/09\/jo-sys_6366_\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u753b\u50cf.png","_links":{"self":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/6366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/comments?post=6366"}],"version-history":[{"count":32,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/6366\/revisions"}],"predecessor-version":[{"id":6425,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/6366\/revisions\/6425"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/media\/6409"}],"wp:attachment":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/media?parent=6366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/categories?post=6366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/tags?post=6366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}