{"id":731,"date":"2026-07-09T03:18:49","date_gmt":"2026-07-09T03:18:49","guid":{"rendered":"https:\/\/rufreevpn.org\/"},"modified":"2026-07-09T03:20:00","modified_gmt":"2026-07-09T03:20:00","slug":"tcp-vs-udp","status":"publish","type":"post","link":"https:\/\/rufreevpn.org\/ja\/post\/tcp-vs-udp\/","title":{"rendered":"VPN\u63a5\u7d9a\u306b\u304a\u3051\u308bTCP vs. UDP: \u9055\u3044\u306f\u4f55\u304b\uff1f"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4f53\u9a13\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u6280\u8853\u7684\u306a\u9078\u629e\u80a2\u304c\u63d0\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002TCP\u3068UDP\u3001\u3069\u3061\u3089\u3092\u4f7f\u7528\u3059\u3079\u304d\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u306e\u3088\u3046\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u901a\u5e38\u306f\u4e21\u65b9\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u4e00\u898b\u3059\u308b\u3068\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u306e\u7f85\u5217\u3067\u6df7\u4e71\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001TCP\u3068UDP\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u901f\u5ea6\u3001\u4fe1\u983c\u6027\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u305f\u3081\u306bVPN\u3092\u6700\u9069\u5316\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001TCP\u3068UDP\u3068\u306f\u4f55\u304b\u3001VPN\u63a5\u7d9a\u5185\u3067\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3001\u305d\u3057\u3066\u30aa\u30f3\u30e9\u30a4\u30f3\u6d3b\u52d5\u306b\u57fa\u3065\u3044\u3066\u3069\u3061\u3089\u3092\u9078\u3076\u3079\u304d\u304b\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">TCP\u3068UDP\u3068\u306f\uff1f<\/h2>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a5cedf093cd7&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a5cedf093cd7\" class=\"wp-block-image aligncenter size-full wp-lightbox-container\"><img fetchpriority=\"high\" decoding=\"async\" width=\"940\" height=\"788\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP.png\" alt=\"TCP\u3068UDP\" class=\"wp-image-734\" srcset=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP.png 940w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP-300x251.png 300w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP-768x644.png 768w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP-14x12.png 14w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/TCP-and-UDP-600x503.png 600w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8cea\u7684\u306b\u306f\u3001TCP\uff08Transmission Control Protocol\uff09\u3068UDP\uff08User Datagram Protocol\uff09\u306f\u3069\u3061\u3089\u3082\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u57fa\u790e\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30b9\u30a4\u30fc\u30c8\u306e&#8220;\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64&#8221;\u306b\u5c5e\u3057\u3066\u304a\u308a\u3001\u305d\u306e\u4e3b\u306a\u5f79\u5272\u306f\u3001\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u304c\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u30b5\u30fc\u30d0\u30fc\u3078\u3001\u305d\u3057\u3066\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30c7\u30d0\u30a4\u30b9\u3078\u3068\u6b63\u78ba\u306b\u9001\u4fe1\u3055\u308c\u308b\u65b9\u6cd5\u3092\u6c7a\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u5185\u3067\u306e\u305d\u308c\u3089\u306e\u52d5\u4f5c\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u57fa\u672c\u7684\u306b\u30c7\u30fc\u30bf\u306e\u6271\u3044\u65b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">TCP: \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e&#8220;\u66f8\u7559\u90f5\u4fbf&#8221;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TCP\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u6307\u5411\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u304cTCP\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u3068\u304d\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u6b63\u5f0f\u306a\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TCP\u306f\u914d\u4fe1\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u306b\u756a\u53f7\u3092\u4ed8\u3051\u3001\u5b9b\u5148\u304b\u3089&#8220;\u53d7\u9818\u66f8&#8221;\uff08\u78ba\u8a8d\u5fdc\u7b54\uff09\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u9014\u4e2d\u3067\u30d1\u30b1\u30c3\u30c8\u304c\u5931\u308f\u308c\u305f\u5834\u5408\u3001TCP\u306f\u505c\u6b62\u3057\u3001\u4e0d\u8db3\u3057\u3066\u3044\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u518d\u8981\u6c42\u3057\u3001\u305d\u308c\u304c\u5230\u7740\u3059\u308b\u306e\u3092\u5f85\u3063\u3066\u304b\u3089\u5148\u306b\u9032\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a2\u30ca\u30ed\u30b8\u30fc:<\/strong> TCP\u306f\u66f8\u7559\u3092\u9001\u308b\u3088\u3046\u306a\u3082\u306e\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u90f5\u4fbf\u5c40\u306f\u914d\u9054\u3092\u4fdd\u8a3c\u3057\u3001\u7d4c\u8def\u3092\u8ffd\u8de1\u3057\u3001\u53d7\u53d6\u4eba\u306b\u7f72\u540d\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u975e\u5e38\u306b\u5b89\u5168\u3067\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u3067\u3059\u304c\u3001\u4f59\u5206\u306a\u624b\u9806\u306e\u305f\u3081\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">UDP: \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e&#8220;\u306f\u304c\u304d&#8221;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UDP\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u6b63\u5f0f\u306a\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u3001\u53d7\u4fe1\u78ba\u8a8d\u3082\u8981\u6c42\u3057\u307e\u305b\u3093\u3002\u5358\u306b\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u3092\u53ce\u96c6\u3057\u3001\u3067\u304d\u308b\u3060\u3051\u901f\u304f\u5b9b\u5148\u306b\u9001\u4fe1\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8ee2\u9001\u4e2d\u306b\u5c11\u6570\u306e\u30d1\u30b1\u30c3\u30c8\u304c\u5931\u308f\u308c\u3066\u3082\uff08\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\uff09\u3001UDP\u306f\u6c17\u306b\u3057\u307e\u305b\u3093\u3002\u53e4\u3044\u30c7\u30fc\u30bf\u3092\u56de\u5fa9\u3059\u308b\u305f\u3081\u306b\u505c\u6b62\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u7d9a\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a2\u30ca\u30ed\u30b8\u30fc:<\/strong> UDP\u306f\u3001\u306f\u304c\u304d\u3092\u4e00\u63e1\u308a\u90f5\u4fbf\u53d7\u3051\u306b\u6295\u51fd\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3060\u3002\u305d\u308c\u3089\u306f\u304a\u305d\u3089\u304f\u3059\u3079\u3066\u3059\u3050\u306b\u76ee\u7684\u5730\u306b\u5c4a\u304f\u3060\u308d\u3046\u304c\u3001\u3082\u3057\u4e00\u3064\u304c\u90f5\u4fbf\u3067\u7d1b\u5931\u3057\u3066\u3082\u3001\u3042\u306a\u305f\u306f\u6c7a\u3057\u3066\u77e5\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u90f5\u4fbf\u5c40\u3082\u305d\u308c\u3092\u898b\u3064\u3051\u3088\u3046\u3068\u306f\u3057\u306a\u3044\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">VPN\u63a5\u7d9a\u306b\u304a\u3051\u308bTCP\uff1a\u9577\u6240\u3068\u77ed\u6240<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092TCP\u7d4c\u7531\u3067\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u5834\u5408\u3001\u901f\u5ea6\u3088\u308a\u3082\u4fe1\u983c\u6027\u3092\u512a\u5148\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">TCP\u306e\u5229\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4fdd\u8a3c\u3055\u308c\u305f\u30c7\u30fc\u30bf\u914d\u4fe1\uff1a<\/strong> TCP\u306f\u30a8\u30e9\u30fc\u3084\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u3001\u30c7\u30fc\u30bf\u306f\u5e38\u306b\u5b8c\u5168\u306a\u72b6\u614b\u3067\u5c4a\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u304c\u6b20\u3051\u308b\u3068\u30d5\u30a1\u30a4\u30eb\u304c\u58ca\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3001Web\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u6700\u9069\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30d0\u30a4\u30d1\u30b9\uff08\u30b9\u30c6\u30eb\u30b9\uff09:<\/strong> TCP\u306f\u30dd\u30fc\u30c8443\u3092\u7d4c\u7531\u3057\u3066\u7c21\u5358\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u6a19\u6e96\u306eHTTPS\u30a6\u30a7\u30d6\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\uff08\u9280\u884c\u3078\u306e\u30ed\u30b0\u30a4\u30f3\u306a\u3069\uff09\u3067\u4f7f\u7528\u3055\u308c\u308b\u306e\u3068\u5168\u304f\u540c\u3058\u30dd\u30fc\u30c8\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u3084\u5236\u9650\u306e\u53b3\u3057\u3044\u653f\u5e9c\u306f\u3001TCP VPN\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u901a\u5e38\u306e\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u3092\u533a\u5225\u3059\u308b\u3053\u3068\u304c\u975e\u5e38\u306b\u56f0\u96e3\u3067\u3059\u3002\u53b3\u3057\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08\u5b66\u6821\u3001\u8077\u5834\u3001\u307e\u305f\u306f\u691c\u95b2\u306e\u53b3\u3057\u3044\u56fd\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306a\u3069\uff09\u306b\u3044\u308b\u5834\u5408\u3001TCP\u306f\u6700\u9ad8\u306e\u5473\u65b9\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">TCP\u306e\u6b20\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4f4e\u901f:<\/strong> \u53d7\u4fe1\u78ba\u8a8d\u306e\u8981\u6c42\u3068\u6d88\u5931\u30d1\u30b1\u30c3\u30c8\u306e\u518d\u9001\u4fe1\u306e\u7d76\u3048\u9593\u306a\u3044\u5f80\u5fa9\u304c\u9045\u5ef6\uff08\u30e9\u30b0\uff09\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>&#8220;TCP\u30e1\u30eb\u30c8\u30c0\u30a6\u30f3&#8221; \u52b9\u679c\uff1a<\/strong> VPN\u306f\u30c7\u30fc\u30bf\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u305f\u3081\u3001TCP\u63a5\u7d9a\u3092\u5225\u306eTCP\u63a5\u7d9a\u306e\u4e2d\u306b\u5b9f\u884c\u3059\u308b\u3068\u30012\u3064\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u4e92\u3044\u306b\u904e\u5270\u306b\u88dc\u6b63\u3057\u5408\u3044\u3001\u6df1\u523b\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u901f\u5ea6\u4f4e\u4e0b\u3092\u5f15\u304d\u8d77\u3053\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">VPN\u63a5\u7d9a\u306b\u304a\u3051\u308bUDP\uff1a\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092UDP\u7d4c\u7531\u3067\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u5834\u5408\u3001\u5b8c\u5168\u306a\u4fe1\u983c\u6027\u3088\u308a\u3082\u901f\u5ea6\u3092\u512a\u5148\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u4e00\u822c\u306eVPN\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u3001UDP\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u63a8\u5968\u3055\u308c\u308b\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u306e\u5229\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9a5a\u7570\u7684\u306a\u9ad8\u901f\uff1a<\/strong> \u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3084\u78ba\u8a8d\u5fdc\u7b54\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306a\u3057\u3067\u3001UDP\u306f\u30c7\u30fc\u30bf\u3092\u975e\u5e38\u306b\u9ad8\u901f\u306b\u8ee2\u9001\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc:<\/strong> UDP\u306f\u5927\u5e45\u306b\u4f4e\u3044ping\u6642\u9593\u3092\u63d0\u4f9b\u3057\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30c7\u30fc\u30bf\u8ee2\u9001\u3092\u5fc5\u8981\u3068\u3059\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u7d76\u5bfe\u7684\u306a\u6a19\u6e96\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u306e\u6b20\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d1\u30b1\u30c3\u30c8\u640d\u5931:<\/strong> \u30a8\u30e9\u30fc\u8a02\u6b63\u304c\u306a\u3044\u305f\u3081\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u304c\u60aa\u3044\u3068\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u307e\u3059\u3002\u30d3\u30c7\u30aa\u30b9\u30c8\u30ea\u30fc\u30e0\u3067\u306f\u3001\u3053\u308c\u306f\u4e00\u77ac\u306e\u30d4\u30af\u30bb\u30eb\u5316\u3068\u3057\u3066\u898b\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30d5\u30a1\u30a4\u30eb\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u7834\u640d\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u305f\u3060\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u304c\u901a\u5e38\u3053\u308c\u3092\u30ad\u30e3\u30c3\u30c1\u3057\u307e\u3059\uff09\u3002<\/li>\n\n\n\n<li><strong>\u30d6\u30ed\u30c3\u30af\u3057\u3084\u3059\u3044\uff1a<\/strong> UDP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u3001TCP\u306b\u6bd4\u3079\u3066\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u304c\u8b58\u5225\u30fb\u30d6\u30ed\u30c3\u30af\u3057\u3084\u3059\u3044\u3002<\/li>\n<\/ul>\n\n\n\n<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>TCP vs UDP \u6a5f\u80fd\u6bd4\u8f03<\/title>\n<style>\n  .comparison-section {\n    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;\n    color: #2c3e50;\n    max-width: 100%;\n    margin: 20px auto;\n    padding: 20px;\n    background-color: #fff;\n  }\n  \n  .comparison-section h2 {\n    font-size: 1.6rem;\n    color: #1a1a1a;\n    border-left: 5px solid #5fa5fa; \/* Style accent *\/\n    padding-left: 12px;\n    margin-bottom: 10px;\n  }\n  \n  .comparison-section p {\n    font-size: 1rem;\n    color: #555;\n    line-height: 1.6;\n    margin-bottom: 25px;\n  }\n  \n  .custom-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n  }\n  \n  .custom-table th {\n    background-color: rgba(95, 165, 250, 0.08); \/* 8% opacity of #5fa5fa *\/\n    color: #1a1a1a;\n    font-size: 0.95rem;\n    font-weight: 700;\n    padding: 16px 14px;\n    border-top: 1px solid #e2e8f0;\n    border-bottom: 3px solid #5fa5fa; \/* Main theme accent *\/\n  }\n  \n  .custom-table td {\n    padding: 14px 14px;\n    font-size: 0.95rem;\n    color: #4a5568;\n    border-bottom: 1px solid #edf2f7;\n    vertical-align: middle;\n  }\n  \n  \/* Highlight the first column (Features) *\/\n  .custom-table tbody tr td:first-child {\n    font-weight: 600;\n    color: #5fa5fa; \/* Applied accent color to feature names *\/\n    width: 25%;\n  }\n  \n  \/* Subtle zebra striping for data rows *\/\n  .custom-table tbody tr:nth-child(even) {\n    background-color: #f8fafc;\n  }\n  \n  .custom-table tbody tr:hover {\n    background-color: rgba(95, 165, 250, 0.04);\n  }\n  \n  \/* Responsive breakpoint for mobile *\/\n  @media (max-width: 600px) {\n    .custom-table th, .custom-table td {\n      padding: 10px 8px;\n      font-size: 0.85rem;\n    }\n    .comparison-section h2 {\n      font-size: 1.3rem;\n    }\n  }\n<\/style>\n\n\n\n<div class=\"comparison-section\">\n  <h2>TCP vs. UDP: \u6a5f\u80fd\u6bd4\u8f03<\/h2>\n  <p>\u3053\u3053\u3067\u30012\u3064\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u7c21\u5358\u306a\u6bd4\u8f03\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n  \n  <table class=\"custom-table\">\n    <thead>\n      <tr>\n        <th>\u7279\u5fb4<\/th>\n        <th>TCP\uff08\u4f1d\u9001\u5236\u5fa1\u30d7\u30ed\u30c8\u30b3\u30eb\uff09<\/th>\n        <th>UDP (\u30e6\u30fc\u30b6\u30fb\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb)<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>\u63a5\u7d9a\u30bf\u30a4\u30d7<\/td>\n        <td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u6307\u5411<\/td>\n        <td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9<\/td>\n      <\/tr>\n      <tr>\n        <td>\u901f\u5ea6<\/td>\n        <td>\u4f4e\u901f\uff08\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306e\u305f\u3081\uff09<\/td>\n        <td>\u9ad8\u901f\u5316\uff08\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306a\u3057\uff09<\/td>\n      <\/tr>\n      <tr>\n        <td>\u4fe1\u983c\u6027<\/td>\n        <td>\u975e\u5e38\u306b\u9ad8\u3044\uff08\u914d\u9054\u4fdd\u8a3c\uff09<\/td>\n        <td>\u4f4e\u3044\uff08\u30d9\u30b9\u30c8\u30a8\u30d5\u30a9\u30fc\u30c8\u914d\u4fe1\uff09<\/td>\n      <\/tr>\n      <tr>\n        <td>\u30a8\u30e9\u30fc\u8a02\u6b63<\/td>\n        <td>\u306f\u3044\uff08\u5931\u308f\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u518d\u9001\u4fe1\uff09<\/td>\n        <td>\u3044\u3044\u3048\uff08\u30ed\u30b9\u30c8\u30d1\u30b1\u30c3\u30c8\u3092\u7121\u8996\uff09<\/td>\n      <\/tr>\n      <tr>\n        <td>\u30ec\u30a4\u30c6\u30f3\u30b7\/\u30d4\u30f3\u30b0<\/td>\n        <td>\u3088\u308a\u9ad8\u3044<\/td>\n        <td>\u4e0b\u3052\u308b<\/td>\n      <\/tr>\n      <tr>\n        <td>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u56de\u907f<\/td>\n        <td>\u512a\u79c0\uff08HTTPS\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6a21\u5023\u53ef\u80fd\uff09<\/td>\n        <td>\u8ca7\u3057\u3044\uff08\u7c21\u5358\u306b\u8b58\u5225\u3067\u304d\u308b\uff09<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u3069\u3061\u3089\u3092\u9078\u3076\u3079\u304d\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TCP\u3068UDP\u306e\u9078\u629e\u306f\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u4f55\u3092\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u304b\u3001\u304a\u3088\u3073\u81ea\u5206\u304c\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306b\u5b8c\u5168\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u3092\u4f7f\u7528\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\uff08\u65e5\u5e38\u4f7f\u3044\u306b\u304a\u3059\u3059\u3081\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e5\u5e38\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6d3b\u52d5\u306e90%\u306b\u304a\u3044\u3066\u3001UDP\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u9078\u629e\u306b\u3059\u3079\u304d\u3067\u3059\u3002UDP\u3092\u9078\u3076\u3079\u304d\u5834\u5408\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u52d5\u753b\u3068\u97f3\u58f0:<\/strong> (Netflix\u3001YouTube\u3001Spotify)\u3002\u52d5\u753b\u306e\u30d5\u30ec\u30fc\u30e0\u304c\u5931\u308f\u308c\u3066\u3082\u3001\u6c17\u3065\u304f\u3053\u3068\u3059\u3089\u3042\u308a\u307e\u305b\u3093\u3002\u6b20\u843d\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u3088\u308a\u3082\u901f\u5ea6\u306e\u65b9\u304c\u306f\u308b\u304b\u306b\u91cd\u8981\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0:<\/strong> UDP\u306f\u30b2\u30fc\u30e0\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u306b\u3088\u308a\u3001\u30dc\u30bf\u30f3\u64cd\u4f5c\u304c\u30b2\u30fc\u30e0\u5185\u3067\u5373\u5ea7\u306b\u53cd\u6620\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d3\u30c7\u30aa\u901a\u8a71:<\/strong> (Zoom\u3001Skype\u3001Teams)\u3002UDP\u306f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u4f1a\u8a71\u3092\u53f0\u7121\u3057\u306b\u3059\u308b\u6c17\u307e\u305a\u3044\u30e9\u30b0\u3084\u9045\u5ef6\u3092\u9632\u304e\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u4e00\u822c\u7684\u306aWeb\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0:<\/strong> \u65e5\u5e38\u306e\u30cd\u30c3\u30c8\u30b5\u30fc\u30d5\u30a3\u30f3\u3067\u306f\u3001UDP\u304c\u3088\u308a\u5feb\u9069\u306a\u4f53\u9a13\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">TCP\u3092\u4f7f\u7528\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\uff08\u554f\u984c\u89e3\u6c7a\u8005\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u512a\u5148\u3059\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u5236\u9650\u3092\u56de\u907f\u3057\u3088\u3046\u3068\u3059\u308b\u5834\u5408\u306f\u3001TCP\u306b\u5207\u308a\u66ff\u3048\u308b\u3079\u304d\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u5834\u5408\u306bTCP\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u53b3\u683c\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u8fc2\u56de\u3059\u308b:<\/strong> \u8077\u5834\u3001\u5927\u5b66\u3001\u307e\u305f\u306f\u4e2d\u56fd\u3084UAE\u306e\u3088\u3046\u306a\u691c\u95b2\u306e\u53b3\u3057\u3044\u56fd\u3067VPN\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001TCP\uff08\u7279\u306b\u30dd\u30fc\u30c8443\uff09\u306b\u5207\u308a\u66ff\u3048\u308b\u3068\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u4e0d\u5b89\u5b9a\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a:<\/strong> \u4e0d\u5b89\u5b9a\u306a\u516c\u8846Wi-Fi\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3057\u3066\u3044\u3066\u3001VPN\u304c\u983b\u7e41\u306b\u5207\u65ad\u3055\u308c\u308b\u5834\u5408\u3001TCP\u306e\u30a8\u30e9\u30fc\u8a02\u6b63\u6a5f\u80fd\u304c\u63a5\u7d9a\u3092\u5b89\u5b9a\u3055\u305b\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5b89\u5168\u306a\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001:<\/strong> \u6a5f\u5bc6\u6587\u66f8\u3001\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u307e\u305f\u306f1\u30d0\u30a4\u30c8\u306e\u6b20\u843d\u3067\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u304c\u7834\u640d\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u30b3\u30fc\u30c9\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u3001TCP\u306f\u305d\u308c\u304c\u5b8c\u74a7\u306b\u5c4a\u304f\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u3068\u3081\u308b\u3068\u3001UDP\u306f\u901f\u5ea6\u5411\u3051\u3001TCP\u306f\u4fe1\u983c\u6027\u5411\u3051\u3067\u3059\u3002\u6700\u8fd1\u306e\u9ad8\u54c1\u8cea\u306aVPN\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u5927\u534a\u306f\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3084\u30b2\u30fc\u30e0\u3067\u30e6\u30fc\u30b6\u30fc\u304c\u6c42\u3081\u308b\u30b7\u30fc\u30e0\u30ec\u30b9\u3067\u9ad8\u901f\u306a\u4f53\u9a13\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u3001UDP\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u307b\u307c\u3059\u3079\u3066\u306e\u30d7\u30ec\u30df\u30a2\u30e0VPN\uff08\u7279\u306bOpenVPN\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3082\u306e\uff09\u3067\u306f\u3001\u30a2\u30d7\u30ea\u8a2d\u5b9a\u5185\u3067TCP\u3068UDP\u3092\u7c21\u5358\u306b\u5207\u308a\u66ff\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ed\u306e\u30d2\u30f3\u30c8: \u901a\u5e38\u306e\u65e5\u5e38\u7684\u306a\u6d3b\u52d5\u3067\u306f\u3001VPN\u3092UDP\u306b\u8a2d\u5b9a\u3057\u305f\u307e\u307e\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u7a81\u7136\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u308a\u3001VPN\u304c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u6c17\u3065\u3044\u305f\u308a\u3001\u63a5\u7d9a\u304c\u983b\u7e41\u306b\u5207\u65ad\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u8a2d\u5b9a\u306b\u79fb\u52d5\u3057\u3066TCP\u306b\u5207\u308a\u66ff\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u4e21\u65b9\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u5e38\u306b\u9ad8\u901f\u3067\u5b89\u5168\u304b\u3064\u5236\u9650\u306e\u306a\u3044\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4f53\u9a13\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>When you set up a Virtual Private Network (VPN), you are often presented with a technical choice that can significantly impact your internet experience: should you use TCP or UDP? If you are using a protocol like OpenVPN, you will usually see options for both. While they might look like confusing alphabet soup, understanding the difference between TCP and UDP is crucial for optimizing your VPN for speed, reliability, and security. In this comprehensive guide, we will break down exactly what TCP and UDP are, how they function within VPN connections, and which one you should choose based on your online activities. What Are TCP and UDP? At their core, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":734,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"TCP vs. UDP for VPN: Which Is Better & What's the Difference?","_seopress_titles_desc":"TCP vs UDP in VPN connections: discover which protocol offers the fastest speeds for gaming and streaming, or the best security to bypass firewalls.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-731","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-post"],"_links":{"self":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/comments?post=731"}],"version-history":[{"count":4,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/731\/revisions"}],"predecessor-version":[{"id":736,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/731\/revisions\/736"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media\/734"}],"wp:attachment":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media?parent=731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/categories?post=731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/tags?post=731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}