{"id":531,"date":"2026-07-06T06:36:01","date_gmt":"2026-07-06T06:36:01","guid":{"rendered":"https:\/\/rufreevpn.org\/"},"modified":"2026-07-06T06:36:01","modified_gmt":"2026-07-06T06:36:01","slug":"what-is-openvpn","status":"publish","type":"post","link":"https:\/\/rufreevpn.org\/ja\/post\/what-is-openvpn\/","title":{"rendered":"OpenVPN\u3068\u306f\uff1f\u4eba\u6c17VPN\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"<p class=\"wp-block-paragraph\">OpenVPN\u306f\u3001\u516c\u958b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u9ad8\u5ea6\u306b\u5b89\u5168\u306a\u30dd\u30a4\u30f3\u30c8\u30c4\u30fc\u30dd\u30a4\u30f3\u30c8\u307e\u305f\u306f\u30b5\u30a4\u30c8\u9593\u63a5\u7d9a\u3092\u78ba\u7acb\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305f\u3001\u6700\u9ad8\u7d1a\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9VPN\u30d7\u30ed\u30c8\u30b3\u30eb\u304a\u3088\u3073\u5805\u7262\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b9\u30a4\u30fc\u30c8\u3067\u3059\u30022001\u5e74\u306bJames Yonan\u306b\u3088\u3063\u3066\u767a\u8868\u3055\u308c\u3066\u4ee5\u6765\u3001\u8907\u96d1\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u901a\u904e\u3057\u3001\u5236\u9650\u306e\u53b3\u3057\u3044\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u56de\u907f\u3059\u308b\u80fd\u529b\u3067\u79f0\u8cdb\u3055\u308c\u3001\u4e16\u754c\u7684\u306a\u696d\u754c\u6a19\u6e96\u3078\u3068\u9032\u5316\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"501\" src=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1.png\" class=\"wp-image-532\" srcset=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1.png 1024w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1-600x294.png 600w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1-300x147.png 300w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1-768x376.png 768w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_8_open-vpn-1024x501-1-18x9.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u72ec\u81ea\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4e00\u4f01\u696d\u304c\u975e\u516c\u958b\u3067\u7dad\u6301\u3059\u308b\u306e\u3068\u306f\u7570\u306a\u308a\u3001OpenVPN\u306f\u5fb9\u5e95\u7684\u306a\u900f\u660e\u6027\u3092\u57fa\u76e4\u3068\u3057\u3066\u767a\u5c55\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5168\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u516c\u958b\u3055\u308c\u3066\u304a\u308a\u3001\u4e16\u754c\u4e2d\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c02\u9580\u5bb6\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u3088\u308b\u7d99\u7d9a\u7684\u306a\u7cbe\u67fb\u3001\u53b3\u683c\u306a\u76e3\u67fb\u3001\u5354\u529b\u7684\u306a\u6539\u826f\u3092\u4fc3\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u96c6\u5408\u7684\u306a\u76e3\u8996\u306b\u3088\u308a\u3001\u8106\u5f31\u6027\u306f\u8fc5\u901f\u306b\u5bfe\u51e6\u3055\u308c\u3001\u73fe\u4ee3\u306e\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5206\u91ce\u3067\u6700\u3082\u5f37\u976d\u3067\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u3001\u4fe1\u983c\u3055\u308c\u308b\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u3064\u3068\u3057\u3066\u306eOpenVPN\u306e\u6c38\u7d9a\u7684\u306a\u8a55\u5224\u3092\u78ba\u56fa\u305f\u308b\u3082\u306e\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN\u306f\u4f55\u3092\u3059\u308b\u306e\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u306f\u3001\u5b89\u5168\u306a\u30c8\u30f3\u30cd\u30eb\u69cb\u7bc9\u30c4\u30fc\u30eb\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u591a\u304f\u306e\u5834\u5408\u5b89\u5168\u3067\u306a\u3044\u516c\u5171\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30c7\u30fc\u30bf\u304c\u79fb\u52d5\u3059\u308b\u305f\u3081\u306e\u4fdd\u8b77\u3055\u308c\u305f\u7d4c\u8def\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u30aa\u30f3\u30e9\u30a4\u30f3\u30d0\u30f3\u30ad\u30f3\u30b0\u3067\u4f7f\u7528\u3055\u308c\u308b\u306e\u3068\u540c\u3058\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a19\u6e96\u3067\u3042\u308bSSL\/TLS\uff08Secure Sockets Layer\/Transport Layer Security\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u5229\u7528\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30c7\u30d0\u30a4\u30b9\u3068VPN\u30b5\u30fc\u30d0\u30fc\u9593\u3092\u901a\u904e\u3059\u308b\u3059\u3079\u3066\u306e\u60c5\u5831\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a\u3001\u30ed\u30b0\u30a4\u30f3\u8a8d\u8a3c\u60c5\u5831\u3001\u8ca1\u52d9\u8a18\u9332\u3001\u500b\u4eba\u901a\u4fe1\u306a\u3069\u306e\u6a5f\u5bc6\u30c7\u30fc\u30bf\u304c\u3001\u7b2c\u4e09\u8005\u306b\u5bfe\u3057\u3066\u5b8c\u5168\u306b\u4e0d\u53ef\u8996\u3067\u3042\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\uff08ISP\uff09<\/li>\n\n\n\n<li>\u516c\u5171Wi-Fi\u4e0a\u306e\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u8005\u3068\u30cf\u30c3\u30ab\u30fc<\/li>\n\n\n\n<li>\u653f\u5e9c\u76e3\u8996\u6a5f\u95a2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5b9f\u969b\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092VPN\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3067\u30de\u30b9\u30ad\u30f3\u30b0\u3059\u308b\u3053\u3068\u3067\u3001\u533f\u540d\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u3084\u5730\u7406\u7684\u5236\u9650\u306e\u3042\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002\u30ea\u30e2\u30fc\u30c8\u5f93\u696d\u54e1\u3092\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u65c5\u884c\u8005\u306e\u63a5\u7d9a\u3092\u4fdd\u8b77\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u30c7\u30b8\u30bf\u30eb\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u30c7\u30fc\u30bf\u6574\u5408\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u591a\u7528\u9014\u3067\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30b0\u30ec\u30fc\u30c9\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3057\u307e\u3059\u304b\uff1f<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img alt=\"\" decoding=\"async\" width=\"1024\" height=\"501\" src=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1.png\" class=\"wp-image-533\" srcset=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1.png 1024w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1-600x294.png 600w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1-300x147.png 300w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1-768x376.png 768w, https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/imgi_9_Image_twk9lqtwk9lqtwk9-1024x501-1-18x9.png 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306b\u5b89\u5168\u306a\u6697\u53f7\u5316\u30c8\u30f3\u30cd\u30eb\u3092\u78ba\u7acb\u3059\u308b\u3053\u3068\u3067\u52d5\u4f5c\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3092\u79fb\u52d5\u3059\u308b\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u5c64\u3067\u5305\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a5\u7d9a\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u306f\u3001\u53b3\u683c\u3067\u9ad8\u5ea6\u306b\u5b89\u5168\u306a\u30d7\u30ed\u30bb\u30b9\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u6697\u53f7\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\uff1a<\/strong> \u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u304c\u4e92\u3044\u306e\u8eab\u5143\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a3c\u660e\u66f8\u307e\u305f\u306f\u4e8b\u524d\u5171\u6709\u9375\u3092\u4ea4\u63db\u3059\u308b\u521d\u671f\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u3053\u306e\u8a8d\u8a3c\u30d5\u30a7\u30fc\u30ba\u3067\u306f\u3001SSL\/TLS\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001\u305d\u306e\u7279\u5b9a\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u7528\u306e\u4e00\u610f\u306e\u6697\u53f7\u9375\u30bb\u30c3\u30c8\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u4eee\u60f3\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4f5c\u6210:<\/strong> ID\u78ba\u8a8d\u5f8c\u3001OpenVPN\u306f\u30c7\u30d0\u30a4\u30b9\u4e0a\u306b\u4eee\u60f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff08TUN\uff08\u30c8\u30f3\u30cd\u30eb\uff09\u307e\u305f\u306fTAP\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bf\u30c3\u30d7\uff09\u30a2\u30c0\u30d7\u30bf\u30fc\u3068\u547c\u3070\u308c\u308b\uff09\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u4eee\u60f3\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u305d\u3053\u3092\u901a\u904e\u3059\u308b\u30c7\u30fc\u30bf\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u524d\u306bOpenVPN\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\u81ea\u52d5\u7684\u306b\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30b1\u30c3\u30c8\u30ab\u30d7\u30bb\u30eb\u5316\u3068\u8ee2\u9001\uff1a<\/strong> \u6697\u53f7\u5316\u5f8c\u3001\u30c7\u30fc\u30bf\u306f\u6a19\u6e96\u306eIP\u30d1\u30b1\u30c3\u30c8\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u672c\u6765\u306e\u6027\u8cea\u3092\u96a0\u3059\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u3002ISP\u306a\u3069\u306e\u5916\u90e8\u306e\u89b3\u6e2c\u8005\u306f\u3001\u3042\u306a\u305f\u304c\u8a2a\u554f\u3057\u3066\u3044\u308b\u7279\u5b9a\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067\u306f\u306a\u304f\u3001OpenVPN\u30b5\u30fc\u30d0\u30fc\u3078\u9001\u4fe1\u3055\u308c\u308b\u6697\u53f7\u5316\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u307f\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5fa9\u53f7\u3068\u914d\u4fe1\uff1a<\/strong> VPN\u30b5\u30fc\u30d0\u30fc\u306b\u5230\u9054\u3059\u308b\u3068\u3001\u30d7\u30ed\u30bb\u30b9\u306f\u9006\u8ee2\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306f\u30d1\u30b1\u30c3\u30c8\u3092\u5fa9\u53f7\u5316\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u6700\u7d42\u7684\u306a\u5b9b\u5148\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u8ee2\u9001\u3057\u3001\u540c\u3058\u5b89\u5168\u306a\u30c8\u30f3\u30cd\u30eb\u3092\u901a\u3058\u3066\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN TCP vs. UDP\uff1a\u3069\u3061\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u9078\u3076\u3079\u304d\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u3092\u5c55\u958b\u3059\u308b\u969b\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092UDP\u307e\u305f\u306fTCP\u3068\u3044\u30462\u3064\u306e\u7570\u306a\u308b\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u5b9f\u884c\u3059\u308b\u67d4\u8edf\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u751f\u306e\u901f\u5ea6\u3068\u63a5\u7d9a\u306e\u56de\u5fa9\u529b\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8abf\u6574\u3057\u305f\u63a5\u7d9a\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\uff08User Datagram Protocol\uff09\u2014 \u9ad8\u901f\u304b\u3064\u52b9\u7387\u7684<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UDP\u306f\u696d\u754c\u6a19\u6e96\u3067\u3042\u308a\u3001\u307b\u3068\u3093\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u597d\u307e\u3057\u3044\u9078\u629e\u80a2\u3067\u3059\u3002\u30a8\u30e9\u30fc\u8a02\u6b63\u3084\u30d1\u30b1\u30c3\u30c8\u78ba\u8a8d\u5fdc\u7b54\u306b\u4f34\u3046\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u524a\u6e1b\u3059\u308b\u305f\u3081\u3001UDP\u306f\u9ad8\u6027\u80fd\u306a\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306b\u5fc5\u8981\u306a\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u306a\u7528\u9014\uff1a<\/strong> \u9ad8\u7cbe\u7d30\u52d5\u753b\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0\u3001VoIP\u901a\u8a71\u3002<\/li>\n\n\n\n<li><strong>\u4e3b\u306a\u5229\u70b9\uff1a<\/strong> \u3088\u308a\u30b9\u30e0\u30fc\u30ba\u3067\u5fdc\u7b54\u6027\u306e\u9ad8\u3044\u4e00\u822c\u7684\u306a\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">TCP (Transmission Control Protocol) \u2014 \u4fe1\u983c\u6027\u3068\u30b9\u30c6\u30eb\u30b9\u6027<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TCP\u306f\u3001\u751f\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3088\u308a\u3082\u4fe1\u983c\u6027\u3068\u30d1\u30b1\u30c3\u30c8\u914d\u4fe1\u306e\u4fdd\u8a3c\u3092\u91cd\u8996\u3057\u307e\u3059\u3002\u53b3\u683c\u306a\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3068\u30d1\u30b1\u30c3\u30c8\u9806\u5e8f\u4ed8\u3051\u306e\u4ed5\u7d44\u307f\u306b\u3088\u308a\u672c\u8cea\u7684\u306b\u4f4e\u901f\u3067\u3059\u304c\u3001\u5236\u9650\u306e\u53b3\u3057\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3067\u306fTCP\u304c\u4e0d\u53ef\u6b20\u306a\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6700\u9069\u306a\u7528\u9014\uff1a<\/strong> \u53b3\u683c\u306a\u691c\u95b2\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001\u4e0d\u5b89\u5b9a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3092\u56de\u907f\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u4e3b\u306a\u5229\u70b9\uff1a<\/strong> \u30dd\u30fc\u30c8443\uff08HTTPS\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6a19\u6e96\u30dd\u30fc\u30c8\uff09\u3067\u52d5\u4f5c\u53ef\u80fd\u3067\u3001OpenVPN\u63a5\u7d9a\u304c\u901a\u5e38\u306eWeb\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u306b\u52b9\u679c\u7684\u306b\u6eb6\u3051\u8fbc\u307f\u3001\u30c7\u30a3\u30fc\u30d7\u30d1\u30b1\u30c3\u30c8\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\uff08DPI\uff09\u3092\u30d0\u30a4\u30d1\u30b9\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN\u306e\u4e3b\u306a\u5229\u70b9\u3068\u6b20\u70b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u305f\u3081\u3001OpenVPN\u306e\u4e3b\u306a\u5f37\u307f\u3068\u6280\u8853\u7684\u306a\u5236\u9650\u4e8b\u9805\u3092\u4ee5\u4e0b\u306b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN\u3068\u4ed6\u306eVPN\u30d7\u30ed\u30c8\u30b3\u30eb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u4ee3\u66ff\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u6bd4\u8f03\u8a55\u4fa1\u3059\u308b\u969b\u306b\u306f\u3001\u305d\u306e\u6bd4\u985e\u306a\u304d\u6c4e\u7528\u6027\u3068\u3001\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u751f\u306e\u901f\u5ea6\u3068\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">OpenVPN vs. WireGuard<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">WireGuard\u306f\u3001OpenVPN\u306e\u652f\u914d\u7684\u5730\u4f4d\u306b\u6311\u3080\u4e3b\u8981\u306a\u73fe\u4ee3\u7684\u306a\u5bfe\u6297\u99ac\u3067\u3059\u300210\u4e07\u884c\u4ee5\u4e0a\u306e\u30b3\u30fc\u30c9\u304b\u3089\u306a\u308bOpenVPN\u306e\u5de8\u5927\u306a\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3068\u306f\u5bfe\u7167\u7684\u306b\u3001WireGuard\u306f\u308f\u305a\u304b\u7d044,000\u884c\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5fb9\u5e95\u7684\u306a\u30b7\u30f3\u30d7\u30eb\u3055\u306b\u3088\u308a\u3001WireGuard\u306f\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u4e0a\u3067\u5927\u5e45\u306b\u9ad8\u901f\u304b\u3064\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001OpenVPN\u306f\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u8a2d\u5b9a\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u6027\u3068\u691c\u95b2\u56de\u907f\u306e\u30b9\u30c6\u30eb\u30b9\u6027\u306b\u304a\u3044\u3066\u512a\u4f4d\u6027\u3092\u4fdd\u3063\u3066\u304a\u308a\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u9069\u5fdc\u3055\u305b\u3066\u3001WireGuard\u306e\u56fa\u5b9aUDP\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u5bb9\u6613\u306b\u508d\u53d7\u3067\u304d\u308b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30d6\u30ed\u30c3\u30af\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">OpenVPN vs. IKEv2\/IPSec<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IKEv2\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30ad\u30fc\u30a8\u30af\u30b9\u30c1\u30a7\u30f3\u30b8\u30d0\u30fc\u30b8\u30e7\u30f32\uff09\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306e\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3067\u5e83\u304f\u8a8d\u8b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e3b\u306a\u5229\u70b9\u306fMOBIKE\uff08\u30e2\u30d3\u30ea\u30c6\u30a3\u3068\u30de\u30eb\u30c1\u30db\u30fc\u30df\u30f3\u30b0\uff09\u6a5f\u80fd\u3067\u3042\u308a\u3001VPN\u30c8\u30f3\u30cd\u30eb\u3092\u5207\u65ad\u3059\u308b\u3053\u3068\u306a\u304f\u3001Wi-Fi\u3068\u30bb\u30eb\u30e9\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3092\u307b\u307c\u77ac\u6642\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002IKEv2\u306f\u3001AES\u30a2\u30af\u30bb\u30e9\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5185\u8535\u3057\u305f\u53e4\u3044\u30e2\u30d0\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u4e00\u822c\u7684\u306b\u9ad8\u901f\u3067\u3059\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306b\u3068\u3063\u3066\u306f\u30d6\u30ed\u30c3\u30af\u304c\u306f\u308b\u304b\u306b\u7c21\u5358\u3067\u3059\u3002OpenVPN\u306f\u3001\u53b3\u3057\u3044\u691c\u95b2\u74b0\u5883\u3067\u306e\u30c7\u30a3\u30fc\u30d7\u30d1\u30b1\u30c3\u30c8\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\u3092\u7a81\u7834\u3059\u308b\u305f\u3081\u306b\u4f9d\u7136\u3068\u3057\u3066\u597d\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">OpenVPN vs. \u30ec\u30ac\u30b7\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\uff08PPTP\u304a\u3088\u3073L2TP\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ec\u30ac\u30b7\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\uff08PPTP\u3084L2TP\/IPSec\u306a\u3069\uff09\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001OpenVPN\u306f\u306f\u308b\u304b\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002PPTP\u306f\u3001\u6570\u5206\u3067\u60aa\u7528\u53ef\u80fd\u306a\u91cd\u5927\u306a\u6697\u53f7\u4e0a\u306e\u8106\u5f31\u6027\u306b\u3088\u308a\u3001\u73fe\u5728\u3067\u306f\u5b8c\u5168\u306b\u6642\u4ee3\u9045\u308c\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002L2TP\u306fPPTP\u3088\u308a\u3082\u512a\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001OpenVPN\u3092\u7279\u5fb4\u3065\u3051\u308b\u9ad8\u5ea6\u306a\u6697\u53f7\u5316\u306e\u67d4\u8edf\u6027\u3068\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u900f\u660e\u6027\u3092\u6b20\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">OpenVPN\u306f\u5b89\u5168\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u306f\u3044\u3001OpenVPN\u306f\u975e\u5e38\u306b\u5b89\u5168\u3067\u3059\u3002<\/strong> \u305d\u306e\u4e16\u754c\u30af\u30e9\u30b9\u306e\u5b89\u5168\u6027\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u7523\u696d\u30b0\u30ec\u30fc\u30c9\u306e\u6697\u53f7\u5316\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u900f\u660e\u6027\u3001\u305d\u3057\u3066\u73fe\u4ee3\u306e\u30b5\u30a4\u30d0\u30fc\u8105\u5a01\u306b\u5bfe\u3059\u308b\u5b9f\u8a3c\u6e08\u307f\u306e\u56de\u5fa9\u529b\u306e\u7d44\u307f\u5408\u308f\u305b\u304b\u3089\u751f\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7523\u696d\u30b0\u30ec\u30fc\u30c9\u306e\u6697\u53f7\u5316\u57fa\u6e96<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">OpenVPN\u306fOpenSSL\u30e9\u30a4\u30d6\u30e9\u30ea\u4e0a\u306b\u69cb\u7bc9\u3055\u308c\u3066\u304a\u308a\u3001\u9ad8\u5ea6\u306a\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5e45\u5e83\u304f\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u6700\u3082\u4e00\u822c\u7684\u306a\u5c55\u958b\u306fAES-256-GCM\u3067\u3001\u3053\u308c\u306f\u91d1\u878d\u6a5f\u95a2\u3001\u8ecd\u968a\u3001\u653f\u5e9c\u6a5f\u95a2\u304c\u6975\u79d8\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u63a1\u7528\u3057\u3066\u3044\u308b\u306e\u3068\u307e\u3063\u305f\u304f\u540c\u3058\u6697\u53f7\u5316\u30ec\u30d9\u30eb\u3067\u3059\u3002\u307e\u305f\u3001Perfect Forward Secrecy\uff08PFS\uff09\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u5c06\u6765\u7279\u5b9a\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc\u304c\u4fb5\u5bb3\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u904e\u53bb\u304a\u3088\u3073\u5c06\u6765\u306e\u3059\u3079\u3066\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u306f\u5b8c\u5168\u306b\u6697\u53f7\u5316\u3055\u308c\u5b89\u5168\u306a\u72b6\u614b\u304c\u4fdd\u305f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e9\u30c7\u30a3\u30ab\u30eb\u306a\u900f\u660e\u6027\u306e\u5b89\u5168\u6027<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u72ec\u81ea\u306eVPN\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304c\u4f01\u696d\u79d8\u5bc6\u3068\u3057\u3066\u53b3\u91cd\u306b\u7ba1\u7406\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001OpenVPN\u306f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3067\u3042\u308b\u305f\u3081\u3001\u305d\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306f\u4e16\u754c\u4e2d\u306e\u72ec\u7acb\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7814\u7a76\u8005\u3084\u30db\u30ef\u30a4\u30c8\u30cf\u30c3\u30ab\u30fc\u306b\u3088\u308b\u7d76\u3048\u9593\u306a\u3044\u76e3\u8996\u4e0b\u306b\u3042\u308a\u307e\u3059\u3002\u6f5c\u5728\u7684\u306a\u8106\u5f31\u6027\u3084\u60aa\u7528\u65b9\u6cd5\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u653b\u6483\u8005\u306b\u5229\u7528\u3055\u308c\u308b\u305a\u3063\u3068\u524d\u306b\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u3088\u3063\u3066\u7279\u5b9a\u3055\u308c\u4fee\u6b63\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9f\u7e3e\u3042\u308b\u30ec\u30b8\u30ea\u30a8\u30f3\u30b9\u3068\u8a8d\u8a3c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">20\u5e74\u306b\u308f\u305f\u308b\u6b74\u53f2\u306e\u4e2d\u3067\u3001OpenVPN\u306f\u6570\u591a\u304f\u306e\u5c02\u9580\u7684\u306a\u7b2c\u4e09\u8005\u76e3\u67fb\u3092\u53d7\u3051\u3001\u305d\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u5b8c\u5168\u6027\u3092\u4e00\u8cab\u3057\u3066\u8a3c\u660e\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u96a0\u3059\u3060\u3051\u3067\u306a\u304f\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u305f\u3081\u306e\u5805\u7262\u306a\u8a8d\u8a3c\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30b8\u30bf\u30eb\u8a3c\u660e\u66f8<\/li>\n\n\n\n<li>\u591a\u8981\u7d20\u8a8d\u8a3c\/\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n\n\n\n<li>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30b9\u30de\u30fc\u30c8\u30ab\u30fc\u30c9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u306eWeb\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u3057\u3066\u305d\u306e\u8db3\u8de1\u3092\u507d\u88c5\u3059\u308b\u72ec\u81ea\u306e\u80fd\u529b\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3067\u30d5\u30e9\u30b0\u3092\u7acb\u3066\u3089\u308c\u308b\u3053\u3068\u306a\u304f\u533f\u540d\u6027\u3092\u7dad\u6301\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u3001\u5229\u7528\u53ef\u80fd\u306a\u6700\u3082\u5b89\u5168\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u306e1\u3064\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>OpenVPN is a premier open-source VPN protocol and robust software suite engineered to establish highly secure point-to-point or site-to-site connections across the public internet. Since its debut in 2001 by James Yonan, it has evolved into a global industry standard, lauded for its ability to traverse complex networks and bypass restrictive firewalls. Unlike proprietary protocols maintained behind closed doors by single corporations, OpenVPN thrives on a foundation of radical transparency. Its entire source code is open to the public, inviting continuous scrutiny, rigorous auditing, and collaborative enhancement by a worldwide community of security experts. This collective oversight ensures that vulnerabilities are swiftly addressed, cementing OpenVPN\u2019s enduring reputation as one of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"What Is OpenVPN? The Ultimate Guide to the Trusted VPN Protocol","_seopress_titles_desc":"Learn how the OpenVPN protocol works. Discover its encryption standards, how it compares to WireGuard, and how to use OpenVPN TCP\/UDP 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-531","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\/531","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=531"}],"version-history":[{"count":1,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/531\/revisions"}],"predecessor-version":[{"id":534,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/531\/revisions\/534"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media\/532"}],"wp:attachment":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media?parent=531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/categories?post=531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/tags?post=531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}