{"id":4256,"date":"2025-09-11T00:00:00","date_gmt":"2025-09-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/vpn-virtual-private-network-explained\/"},"modified":"2026-06-10T02:07:22","modified_gmt":"2026-06-10T02:07:22","slug":"vpn-virtual-private-network-explained","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/vpn-virtual-private-network-explained","title":{"rendered":"\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09\u3068\u306f\u4f55\u304b\uff1f"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6.webp\" alt=\"What Is a Virtual Private Network (VPN)?\" class=\"wp-image-4253\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fb301c2a06b6406181034df939732bc6-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 VPN\u3068\u306f\u4f55\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09<\/strong> \u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306a\u3069\u306e\u30d1\u30d6\u30ea\u30c3\u30af\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u5b89\u5168\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u3092\u78ba\u7acb\u3059\u308b\u6280\u8853\u3067\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u7aef\u672b\u3068\u30ea\u30e2\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u306e\u9593\u306b\u300c\u30c8\u30f3\u30cd\u30eb\u300d\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3067\u3001VPN\u306f\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u78ba\u4fdd\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u304b\u306e\u3088\u3046\u306b\u30aa\u30f3\u30e9\u30a4\u30f3\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u306f\u3001\u500b\u4eba\u304a\u3088\u3073\u4f01\u696d\u306e\u4e21\u65b9\u306b\u3088\u3063\u3066\u3001\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u30ea\u30e2\u30fc\u30c8\u52e4\u52d9\u6642\u3084\u4fe1\u983c\u3067\u304d\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4ecb\u3057\u3066\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u91cd\u8981\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 VPN\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u306f\u3001 <strong>\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/strong>. \u3068\u547c\u3070\u308c\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u901a\u3058\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002VPN\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3092\u9001\u4fe1\u3055\u308c\u308b\u524d\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u304a\u3088\u3073\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u308a\u3001\u30cf\u30c3\u30ab\u30fc\u307e\u305f\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306a\u3069\u306e\u4e0d\u6b63\u306a\u7b2c\u4e09\u8005\u306b\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u8aad\u307f\u53d6\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u306aVPN\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>PPTP\uff08\u30dd\u30a4\u30f3\u30c8\u30fb\u30c4\u30fc\u30fb\u30dd\u30a4\u30f3\u30c8\u30fb\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\uff1a<\/strong> \u6700\u3082\u521d\u671f\u306eVPN\u30d7\u30ed\u30c8\u30b3\u30eb\u306e1\u3064\u3067\u3001\u9ad8\u901f\u306a\u901a\u4fe1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u6bd4\u8f03\u7684\u5f31\u3044\u3067\u3059\u3002.<\/p><\/li><li><p><strong>L2TP\/IPsec\uff08\u30ec\u30a4\u30e4\u30fc2\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\uff0bIPsec\uff09\uff1a<\/strong> \u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3068IP\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5f37\u529b\u306a\u6697\u53f7\u5316\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p><\/li><li><p><strong>OpenVPN:<\/strong> \u67d4\u8edf\u6027\u3068\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3067\u77e5\u3089\u308c\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002.<\/p><\/li><li><p><strong>IKEv2\/IPsec:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u5207\u308a\u66ff\u3048\u6642\u306b\u5b89\u5b9a\u6027\u304c\u9ad8\u3044\u3053\u3068\u304b\u3089\u3001\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"494\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21.webp\" alt=\"How VPNs Work\" class=\"wp-image-4254\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21-300x124.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21-1024x422.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21-768x316.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fd68425af79243d59ceb5890eba55b21-18x7.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 VPN\u3092\u5229\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong>\u30c7\u30fc\u30bf\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff1a<\/strong> \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u3067\u60c5\u5831\u3092\u4fdd\u8b77\u3057\u3001\u30c7\u30fc\u30bf\u306e\u76d7\u8074\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002.<br\/>\ud83d\udc49 <strong>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\uff1a<\/strong> \u30e6\u30fc\u30b6\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u96a0\u3059\u3053\u3068\u3067\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u6d3b\u52d5\u306e\u8ffd\u8de1\u3092\u56f0\u96e3\u306b\u3057\u307e\u3059\u3002.<br\/>\ud83d\udc49 <strong>\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\uff1a<\/strong> \u5f93\u696d\u54e1\u304c\u3069\u3053\u304b\u3089\u3067\u3082\u4f01\u696d\u306e\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5b89\u5168\u306b\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<br\/>\ud83d\udc49 <strong>\u5236\u9650\u306e\u56de\u907f\uff1a<\/strong> \u7279\u5b9a\u306e\u5730\u57df\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u30ea\u30bd\u30fc\u30b9\u3084\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 \u4f01\u696d\u304a\u3088\u3073\u65e5\u5e38\u751f\u6d3b\u306b\u304a\u3051\u308bVPN\u306e\u5fdc\u7528<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u4f01\u696d\uff1a<\/strong> \u30ea\u30e2\u30fc\u30c8\u30ef\u30fc\u30ab\u30fc\u3092\u5185\u90e8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5b89\u5168\u306b\u63a5\u7d9a\u3055\u305b\u307e\u3059\u3002.<\/p><\/li><li><p><strong>\u500b\u4eba\uff1a<\/strong> \u516c\u5171Wi-Fi\u4e0a\u3067\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u53d6\u5f15\u3001\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-an-isp-internet-service-provider\/\"><strong>\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc<\/strong><\/a><strong>:<\/strong> \u9867\u5ba2\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u4fdd\u8b77\u306b\u95a2\u3059\u308b\u898f\u5236\u3078\u306e\u6e96\u62e0\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 VPN\u3068\u305d\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u6280\u8853\u306e\u6bd4\u8f03<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304a\u3088\u3073\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u4ed6\u306e\u6280\u8853\u3001\u4f8b\u3048\u3070 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ja\/glossary\/what-is-mpls-multiprotocol-label-switching\/\"><strong>MPLS\uff09<\/strong><\/a> \u307e\u305f\u306f <strong>\u5c02\u7528\u56de\u7dda\uff08\u30ec\u30f3\u30c8\u30e9\u30a4\u30f3\uff09<\/strong> \u306f\u3001\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304a\u3088\u3073\u4e88\u6e2c\u53ef\u80fd\u306a\u9045\u5ef6\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u591a\u304f\u306e\u4f01\u696d\u3067\u306f\u3001\u30b3\u30b9\u30c8\u3001\u67d4\u8edf\u6027\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u305f\u3081\u306b\u3001\u3053\u308c\u3089\u306e\u6280\u8853\u3068\u3068\u3082\u306bVPN\u3092\u5c0e\u5165\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b7 \u7d50\u8ad6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09<\/strong> 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