{"id":34457,"date":"2025-12-12T02:18:31","date_gmt":"2025-12-12T10:18:31","guid":{"rendered":"https:\/\/www.privateinternetaccess.com\/blog\/?p=34457"},"modified":"2026-05-28T04:56:08","modified_gmt":"2026-05-28T11:56:08","slug":"ipsec-vpn","status":"publish","type":"post","link":"https:\/\/www.privateinternetaccess.com\/ja\/blog\/ipsec-vpn\/","title":{"rendered":"IPsec VPN\u3068\u306f\uff1f\u305d\u306e\u4ed5\u7d44\u307f\u30682026\u5e74\u3067\u3082\u4f7f\u308f\u308c\u7d9a\u3051\u308b\u7406\u7531"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">IPsec VPN\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u3059\u308b\u4f1a\u8a71\u3067\u3088\u304f\u8a71\u984c\u306b\u4e0a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u30c4\u30fc\u30eb\u3068\u3044\u3046\u3088\u308a\u306f\u3001\u307e\u308b\u3067\u96e3\u89e3\u306a\u6570\u5f0f\u306e\u3088\u3046\u306b\u601d\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306f\u3001IPsec VPN\u306f2\u3064\u4ee5\u4e0a\u306e\u5730\u70b9\u306e\u9593\u3092\u79fb\u52d5\u3059\u308b\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u3001\u6700\u3082\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u65b9\u6cd5\u306e\u3072\u3068\u3064\u3067\u3059\u3002\u305d\u3057\u3066\u57fa\u672c\u3092\u7406\u89e3\u3057\u3066\u3057\u307e\u3048\u3070\u3001\u9a5a\u304f\u307b\u3069\u30b7\u30f3\u30d7\u30eb\u306a\u4ed5\u7d44\u307f\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001IPsec VPN\u3068\u306f\u4f55\u304b\u3092\u8aac\u660e\u3057\u3001\u305d\u306e\u4ed5\u7d44\u307f\u3092\u6bb5\u968e\u7684\u306b\u3054\u7d39\u4ecb\u3059\u308b\u3068\u3068\u3082\u306b\u3001\u306a\u305cIPsec VPN\u304c\u30c7\u30b8\u30bf\u30eb\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u306e\u304b\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"wia\">IPsec VPN\u3068\u306f\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPN\u304c<a href=\"https:\/\/www.privateinternetaccess.com\/ja\/what-is-vpn\">\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08Virtual Private Network\uff09<\/a>\u306e\u7565\u3067\u3042\u308b\u3053\u3068\u306f\u3001\u3059\u3067\u306b\u3054\u5b58\u3058\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3053\u306e\u6982\u5ff5\u306b\u52a0\u308f\u308bIPsec\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff08Internet Protocol Security\uff09\u306e\u7565\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u3068\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30f3\u30cd\u30eb\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u9023\u643a\u3057\u3066\u52d5\u4f5c\u3059\u308b\u4e00\u9023\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u3053\u3068\u3067\u3059\u3002\u7c21\u5358\u306b\u8a00\u3048\u3070\u30012\u3064\u306e\u30c7\u30d0\u30a4\u30b9\u306e\u9593\u306e\u7d4c\u8def\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u30c7\u30fc\u30bf\u3092\u975e\u516c\u958b\u306e\u307e\u307e\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30c8\u30f3\u30cd\u30eb\u306f\u5e38\u306b\u3059\u3079\u3066\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901a\u4fe1\u306b\u5bfe\u3057\u3066\u300c\u30aa\u30f3\u300d\u306b\u306a\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u304cVPN\u8a2d\u5b9a\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u7279\u5b9a\u306e\u30eb\u30fc\u30eb\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u300cinteresting traffic\uff08\u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u901a\u4fe1\uff09\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"wda\">IPsec VPN\u306e\u6a5f\u80fd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u306f\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3001\u30c8\u30f3\u30cd\u30eb\u3092\u5f62\u6210\u3059\u308b2\u3064\u306e\u30c7\u30d0\u30a4\u30b9\uff08\u901a\u5e38\u306f\u4e21\u7aef\u306eVPN \u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u307e\u305f\u306f\u30b5\u30fc\u30d0\u30fc\uff09\u3060\u3051\u304c\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u3058\u4f1a\u793e\u3067\u50cd\u3044\u3066\u3044\u308b\u30b8\u30e3\u30c3\u30af\u3068\u30b5\u30ea\u30fc\u3068\u3044\u3046\u4eba\u304c\u3044\u308b\u3068\u4eee\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002\u4e8c\u4eba\u306f\u65e5\u5e38\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u4fdd\u8b77\u3055\u308c\u3066\u3044\u306a\u3044\u57fa\u672c\u7684\u306a\u30c1\u30e3\u30c3\u30c8\u30a2\u30d7\u30ea\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u6697\u53f7\u5316\u3055\u308c\u305a\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001\u30b8\u30e3\u30c3\u30af\u304c\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u3092\u30e1\u30fc\u30eb\u3067\u9001\u4fe1\u3059\u308b\u3068\u3001\u4f1a\u793e\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u305d\u308c\u3092 interesting traffic\u3068\u3057\u3066\u691c\u51fa\u3057\u3001VPN\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30f3\u30cd\u30eb\u3092\u7d4c\u7531\u3057\u3066\u3001\u30b5\u30ea\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u307e\u3059\u3002\u30b8\u30e3\u30c3\u30af\u306f\u901a\u5e38\u3069\u304a\u308a\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u307e\u3059\u304c\u3001VPN \u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u88cf\u5074\u3067\u4ecb\u5165\u3057\u3001\u305d\u306e\u8ee2\u9001\u3092\u5b89\u5168\u306b\u4fdd\u3064\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30a1\u30a4\u30eb\u304c\u30c8\u30f3\u30cd\u30eb\u3092\u901a\u904e\u3059\u308b\u969b\u3001IPsec\u306f\u5916\u90e8\u304b\u3089\u8aad\u307f\u53d6\u308c\u306a\u3044\u3088\u3046\u306b\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3001\u5230\u7740\u6642\u306b\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9375\u4ea4\u63db\uff08IKE\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001\u4e21\u65b9\u306eVPN\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u8a8d\u8a3c\u3057\u307e\u3059\u3002IKE\uff08<a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc7296\" rel=\"nofollow\">Internet Engineering Task Force\u304c\u5b9a\u3081\u305fRFC 7296<\/a>\u3067\u5b9a\u7fa9\uff09\u306f\u3001\u63a5\u7d9a\u3092\u5b89\u5168\u306b\u4fdd\u3064\u305f\u3081\u306e\u6697\u53f7\u5316\u30ad\u30fc\u3092\u78ba\u7acb\u304a\u3088\u3073\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.privateinternetaccess.com\/blog\/wp-content\/uploads\/2026\/01\/JA-How-Data-Flows-Through-an-IPsec-VPN-Japanese.png\" alt=\"\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3001\u6574\u5408\u6027\u3001\u8a8d\u8a3c\u306e\u5439\u304d\u51fa\u3057\u3068\u3001IPsec VPN\u30c8\u30f3\u30cd\u30eb\u3092\u4ecb\u3057\u3066\u30b8\u30e3\u30c3\u30af\u306e\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u30b5\u30ea\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u6d41\u308c\u308b\u30c7\u30fc\u30bf\u3092\u793a\u3059\u56f3\u3002\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"his\">IPsec \u304c\u30c7\u30b8\u30bf\u30eb\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u5f37\u5316\u3059\u308b\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec\u306f1990\u5e74\u4ee3\u5f8c\u534a\u304b\u3089\u5229\u7528\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u5927\u9678\u3092\u307e\u305f\u3044\u3067\u9280\u884c\u306e\u5185\u90e8\u30b7\u30b9\u30c6\u30e0\u3092\u63a5\u7d9a\u3057\u3001\u533b\u5e2b\u304c\u533b\u7642\u8a18\u9332\u3092\u5b89\u5168\u306b\u9001\u4fe1\u3059\u308b\u306e\u3092\u52a9\u3051\u3001\u30ea\u30e2\u30fc\u30c8\u30c1\u30fc\u30e0\u304c\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u8005\u306b\u9375\u3092\u6e21\u3059\u3053\u3068\u306a\u304f\u4f01\u696d\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u30ed\u30b0\u30a4\u30f3\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u6ce8\u76ee\u3092\u96c6\u3081\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001IPsec\u306f\u73fe\u5728\u3067\u3082\u6700\u3082\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bVPN\u6a19\u6e96\u306e1\u3064\u3067\u3059\u3002\u305d\u306e\u7406\u7531\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><b>\u30c7\u30d0\u30a4\u30b9\u3084\u30d9\u30f3\u30c0\u30fc\u9593\u306e\u76f8\u4e92\u904b\u7528\u6027\uff1a<\/b>IPsec VPN \u306f\u3001\u4e92\u63db\u6027\u306e\u554f\u984c\u306a\u3057\u306b\u3001\u7570\u306a\u308b\u30e1\u30fc\u30ab\u30fc\u306e\u30eb\u30fc\u30bf\u30fc\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><b>\u30cf\u30a4\u30ea\u30b9\u30af\u306a\u74b0\u5883\u3067\u306e\u5b9f\u7e3e\uff1a<\/b>\u91d1\u878d\u3001\u533b\u7642\u3001\u653f\u5e9c\u6a5f\u95a2\u306a\u3069\u306e\u696d\u754c\u3067\u306f\u3001IPsec\u304c\u6a19\u6e96\u5316\u3055\u308c\u3001\u5fb9\u5e95\u7684\u306b\u30c6\u30b9\u30c8\u3055\u308c\u3001\u591a\u304f\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u898f\u5236\u306b\u6e96\u62e0\u3057\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u4f9d\u7136\u3068\u3057\u3066\u4fe1\u983c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><b>\u9ad8\u8ca0\u8377\u306b\u3082\u8010\u3048\u3089\u308c\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\uff1a <\/b>\u9069\u5207\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u308c\u3070\u3001IPsec \u306f\u9ad8\u8ca0\u8377\u6642\u3067\u3082\u30c0\u30a6\u30f3\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u5927\u91cf\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901a\u4fe1\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u304c\u3001\u4f01\u696d\u30aa\u30d5\u30a3\u30b9\u9593\u3092\u7d50\u3076\u62e0\u70b9\u9593VPNs\u3068\u3057\u3066\u3001\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u3067\u3059\u3002<\/li>\n\n\n\n<li><b>\u30ea\u30e2\u30fc\u30c8\u304a\u3088\u3073\u30e2\u30d0\u30a4\u30eb\u30a2\u30af\u30bb\u30b9\u306e\u5b89\u5b9a\u6027\uff1a<\/b>IPsec \u3068\u9023\u643a\u3057\u3066\u52d5\u4f5c\u3059\u308b\u9375\u4ea4\u63db\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308bIKEv2 \u306f\u3001Wi-Fi\u3068\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u5207\u308a\u66ff\u3048\u3066\u3082VPN\u63a5\u7d9a\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5f93\u696d\u54e1\u304c\u500b\u4eba\u6240\u6709\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u4f7f\u7528\u3059\u308b\u8077\u5834\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN \u306f\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5229\u7528\u3059\u308b\u969b\u306b\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3092\u9078\u3076\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4e00\u90e8\u306eVPN\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u53e4\u3044\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u305f\u308a\u3001\u3088\u304f\u4f7f\u3046\u30c7\u30d0\u30a4\u30b9\u5411\u3051\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u30a2\u30d7\u30ea\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u306e\u3067\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u8a2d\u5b9a\u304c\u96e3\u3057\u304f\u306a\u308a\u3001\u30c7\u30fc\u30bf\u304c\u5371\u967a\u306b\u3055\u3089\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"biv\">IPsec VPN\u306e\u57fa\u672c\u7528\u8a9e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u3067\u306f\u591a\u304f\u306e\u6280\u8853\u7684\u306a\u5c02\u9580\u7528\u8a9e\u304c\u4f7f\u308f\u308c\u3066\u304a\u308a\u3001\u6700\u521d\u306f\u7406\u89e3\u3059\u308b\u306e\u304c\u5927\u5909\u306b\u611f\u3058\u3089\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\u3053\u306e\u8a18\u4e8b\u3067\u767b\u5834\u3059\u308b\u91cd\u8981\u306a\u7528\u8a9e\u3092\u307e\u3068\u3081\u305f\u7528\u8a9e\u96c6\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u7528\u8a9e\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001IPsec VPN\u306e\u4ed5\u7d44\u307f\u3092\u3088\u308a\u7c21\u5358\u306b\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong><strong>\u7528\u8a9e<\/strong><\/strong><\/td><td><strong><strong>\u6982\u8981<\/strong><\/strong><\/td><td><strong><strong>\u5f79\u5272<\/strong><\/strong><\/td><\/tr><tr><td>\u8a8d\u8a3c\u30d8\u30c3\u30c0\u30fc\uff08AH\uff09<\/td><td>IPsec VPN\u3092\u901a\u3058\u3066\u9001\u4fe1\u3055\u308c\u308b\u5404\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u306b\u4ed8\u4e0e\u3055\u308c\u308b\u30e9\u30d9\u30eb<\/td><td>\u9001\u4fe1\u5143\u306e\u6b63\u5f53\u6027\u3092\u691c\u8a3c\u3057\u3001\u30c7\u30fc\u30bf\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\uff08\u6697\u53f7\u5316\u306f\u884c\u308f\u306a\u3044\uff09<\/td><\/tr><tr><td>\u30ab\u30d7\u30bb\u30eb\u5316\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30da\u30a4\u30ed\u30fc\u30c9\uff08ESP\uff09<\/td><td>\u30d1\u30b1\u30c3\u30c8\u306b\u30d8\u30c3\u30c0\u30fc\u3001\u30c8\u30ec\u30fc\u30e9\u30fc\u3001\u8a8d\u8a3c\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u69cb\u9020<\/td><td>\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3001\u6b63\u5f53\u306a\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\uff08SA\uff09<\/td><td>\u901a\u4fe1\u306e\u305f\u3081\u306b\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u5408\u610f\u3055\u308c\u308b\u4e00\u9023\u306e\u30eb\u30fc\u30eb<\/td><td>\u4f7f\u7528\u3059\u308b\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3001\u8a8d\u8a3c\u65b9\u5f0f\u3001\u6709\u52b9\u671f\u9593\u3092\u5b9a\u7fa9\u3059\u308b<\/td><\/tr><tr><td>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9375\u4ea4\u63db\uff08IKE\uff09<\/td><td>SA \u3092\u8a2d\u5b9a\u304a\u3088\u3073\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/td><td>\u6697\u53f7\u5316\u65b9\u5f0f\u3084\u8a8d\u8a3c\u65b9\u5f0f\u306e\u4ea4\u6e09\u3092\u884c\u3044\u3001\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u4fe1\u983c\u95a2\u4fc2\u3092\u78ba\u7acb\u3059\u308b<\/td><\/tr><tr><td>\u30c7\u30a3\u30d5\u30a3\u30fc\u30fb\u30d8\u30eb\u30de\u30f3\u9375\u4ea4\u63db\uff08DH\uff09<\/td><td>\u9375\u3092\u5b89\u5168\u306b\u5171\u6709\u3059\u308b\u305f\u3081\u306e\u6570\u5b66\u7684\u624b\u6cd5<\/td><td>\u79d8\u5bc6\u9375\u3092\u76f4\u63a5\u9001\u4fe1\u3059\u308b\u3053\u3068\u306a\u304f\u30012\u3064\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u5171\u901a\u306e\u79d8\u5bc6\u9375\u3092\u751f\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<\/td><\/tr><tr><td>\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9<\/td><td>\u5143\u306e\u30d1\u30b1\u30c3\u30c8\u5168\u4f53\u3092\u65b0\u3057\u3044\u30d1\u30b1\u30c3\u30c8\u3067\u5305\u307f\u8fbc\u3080<\/td><td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u901a\u4fe1\u306e\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308b\uff08\u4f8b\uff1a\u62e0\u70b9\u9593VPN\u306a\u3069\uff09<\/td><\/tr><tr><td>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9<\/td><td>\u5143\u306e IP\u30d8\u30c3\u30c0\u30fc\u3092\u6b8b\u3057\u305f\u307e\u307e\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u307f\u3092\u4fdd\u8b77\u3059\u308b\u65b9\u5f0f<\/td><td>\u30db\u30b9\u30c8\u9593\u901a\u4fe1\u3084\u5185\u90e8\u901a\u4fe1\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u52b9\u7387\u3092\u5411\u4e0a\u3059\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"hda\">IPsec VPN\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u306f\u30012\u3064\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u307e\u305f\u306f\u30c7\u30d0\u30a4\u30b9\u9593\u306b\u5b89\u5168\u306a\u901a\u4fe1\u7d4c\u8def\u3092\u69cb\u7bc9\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30c7\u30fc\u30bf\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306b\u3084\u308a\u53d6\u308a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u306f\u3001\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c8\u30f3\u30cd\u30eb\u3092\u4f5c\u6210\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u6c7a\u5b9a<\/li>\n\n\n\n<li>\u5404\u30c7\u30d0\u30a4\u30b9\u306e\u6b63\u5f53\u6027\u3092\u8a3c\u660e<\/li>\n\n\n\n<li>\u901a\u904e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308binteresting traffic\u3092\u6697\u53f7\u5316\u3057\u3001\u4fdd\u8b77<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9375\u4ea4\u63db\uff08IKE\uff09\u3068\u547c\u3070\u308c\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u901a\u3058\u3066\u884c\u308f\u308c\u307e\u3059\u3002IKE\u306f2\u3064\u306e\u6bb5\u968e\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u30d5\u30a7\u30fc\u30ba1\u3067\u306f\u4fe1\u983c\u95a2\u4fc2\u3092\u78ba\u7acb\u3057\u3001\u30d5\u30a7\u30fc\u30ba2\u3067\u306f\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u53ef\u80fd\u306b\u3059\u308b\u3059\u3079\u3066\u306e\u6570\u5b66\u7684\u306a\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5404\u30b9\u30c6\u30c3\u30d7\u304c\u5185\u90e8\u3067\u4f55\u3092\u884c\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u628a\u63e1\u3059\u308b\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"wic\">IPsec\u304c\u30c8\u30f3\u30cd\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.privateinternetaccess.com\/blog\/wp-content\/uploads\/2026\/01\/JA-When-IPsec-Creates-a-Tunnel-Japanese.png\" alt=\"IPsec\u304c\u3001interesting traffic\u306e\u307f\u306b\u5bfe\u3057\u3066\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30f3\u30cd\u30eb\u3092\u69cb\u7bc9\u3059\u308b\u4ed5\u7d44\u307f\u3092\u793a\u3057\u305f\u56f3\u3002\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f8b\u3067\u306f\u3001\u30b8\u30e3\u30c3\u30af\u304c\u30b5\u30ea\u30fc\u306b\u6a5f\u5bc6\u306e\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u4f1a\u793e\u306eVPN\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u3001\u305d\u306e\u901a\u4fe1\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30eb\u30fc\u30eb\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u691c\u51fa\u3057\u3001\u30b5\u30ea\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5411\u3051\u3066\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30f3\u30cd\u30eb\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u57fa\u6e96\u3092\u6e80\u305f\u3055\u306a\u3044\u305d\u306e\u4ed6\u306e\u901a\u4fe1\u306f\u3001\u901a\u5e38\u3069\u304a\u308a\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">interesting traffic\u306b\u3088\u3063\u3066IPsec\u30c8\u30f3\u30cd\u30eb\u304c\u4f5c\u6210\u3055\u308c\u308b\u3068\u3001\u30c7\u30fc\u30bf\u306e\u8ee2\u9001\u306b\u306f\u6b21\u306e2\u3064\u306e\u30e2\u30fc\u30c9\u306e\u3044\u305a\u308c\u304b\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\uff1a<\/strong>\u5143\u306e\u30a2\u30c9\u30ec\u30b9\u60c5\u5831\u3092\u542b\u3080\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u5168\u4f53\u3092\u5305\u307f\u8fbc\u307f\u3001\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a73\u7d30\u304c\u96a0\u3055\u308c\u308b\u305f\u3081\u3001\u30aa\u30d5\u30a3\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u3092\u63a5\u7d9a\u3059\u308b\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\uff1a<\/strong>\u30c7\u30fc\u30bf\u90e8\u5206\uff08\u30da\u30a4\u30ed\u30fc\u30c9\uff09\u306e\u307f\u3092\u6697\u53f7\u5316\u3057\u3001\u5143\u306e\u30d8\u30c3\u30c0\u30fc\u306f\u305d\u306e\u307e\u307e\u6b8b\u3057\u307e\u3059\u3002\u3053\u306e\u8efd\u91cf\u306a\u69cb\u6210\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u76f4\u63a5\u901a\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b8\u30e3\u30c3\u30af\u3068\u30b5\u30ea\u30fc\u306e\u4f8b\u3067\u306f\u30012\u3064\u306e\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3067\u30c7\u30fc\u30bf\u304c\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u3059\u3079\u3066\u306e\u901a\u4fe1\u3092\u4fdd\u8b77\u3067\u304d\u308b\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4e00\u65b9\u3001\u901a\u4fe1\u304c\u500b\u3005\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u76f4\u63a5\u884c\u308f\u308c\u308b\u5834\u5408\u306b\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u306e\u307b\u3046\u304c\u52b9\u7387\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ipsec\u30c7\u30d0\u30a4\u30b9\u304c\u76f8\u4e92\u306b\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\">IPsec\u30c7\u30d0\u30a4\u30b9\u304c\u76f8\u4e92\u306b\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.privateinternetaccess.com\/blog\/wp-content\/uploads\/2026\/01\/JA-How-IPsec-Devices-Verify-Each-Other-Japanese.png\" alt=\"IPsec VPN\u63a5\u7d9a\u3067\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u76f8\u4e92\u306b\u691c\u8a3c\u3092\u884c\u3046\u4ed5\u7d44\u307f\u3092\u793a\u3057\u305f\u56f3\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u958b\u59cb\u3059\u308b\u524d\u306b\u30012\u3064\u306eVPN\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\uff08\u30b8\u30e3\u30c3\u30af\u306e\u30aa\u30d5\u30a3\u30b9\u3068\u30b5\u30ea\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u306f\u3001\u4e92\u3044\u306b\u4fe1\u983c\u3067\u304d\u308b\u76f8\u624b\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9375\u4ea4\u63db\u306e\u6700\u521d\u306e\u6bb5\u968e\u3067\u3042\u308b IKEv1\uff08\u30d5\u30a7\u30fc\u30ba1\uff09\u3067\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3068\u304d\u3001\u5185\u90e8\u3067\u306f\u6b21\u306e\u51e6\u7406\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u3001\u30c8\u30f3\u30cd\u30eb\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u6697\u53f7\u5316\u65b9\u5f0f\u3068\u8a8d\u8a3c\u65b9\u5f0f\u3001\u305d\u3057\u3066\u63a5\u7d9a\u306e\u6709\u52b9\u671f\u9593\u306b\u3064\u3044\u3066\u5408\u610f\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u3001\u30c7\u30b8\u30bf\u30eb\u8a3c\u660e\u66f8\u3084\u4e8b\u524d\u5171\u6709\u9375\u306a\u3069\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u4ea4\u63db\u3057\u3001\u6b63\u5f53\u306a\u76f8\u624b\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30c7\u30a3\u30d5\u30a3\u30fc\u30fb\u30d8\u30eb\u30de\u30f3\u9375\u4ea4\u63db\u3068\u547c\u3070\u308c\u308b\u65b9\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u5171\u6709\u306e\u79d8\u5bc6\u9375\u3092\u751f\u6210\u3002\uff08\u8907\u96d1\u306a\u8a08\u7b97\u304c\u884c\u308f\u308c\u307e\u3059\u304c\u3001\u8981\u3059\u308b\u306b\u3001\u9375\u3092\u76f4\u63a5\u9001\u4fe1\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u53cc\u65b9\u304c\u540c\u3058\u9375\u3092\u751f\u6210\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\uff09<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30d5\u30a7\u30fc\u30ba\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u4e21\u65b9\u306e\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306f\u6b63\u3057\u3044\u76f8\u624b\u3068\u901a\u4fe1\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u3001\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u305f\u3081\u306e\u5b89\u5168\u306a\u300c\u5236\u5fa1\u30c1\u30e3\u30cd\u30eb\u300d\u304c\u6e96\u5099\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ipsec\u304c-interesting-traffic-\u3092\u6697\u53f7\u5316\u3059\u308b\u4ed5\u7d44\u307f\">IPsec\u304c\u300cinteresting traffic\u300d\u3092\u6697\u53f7\u5316\u3059\u308b\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306b\u3001\u7b2c2\u6bb5\u968e\u3067\u3042\u308b IKEv2\uff08\u30d5\u30a7\u30fc\u30ba 2\uff09\u304c\u59cb\u307e\u308a\u3001\u3053\u3053\u3067\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u304c\u884c\u308f\u308c\u307e\u3059\u3002VPN\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306f\u30d5\u30a7\u30fc\u30ba 1\u3067\u78ba\u7acb\u3057\u305f\u5b89\u5168\u306a\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u3001\u6697\u53f7\u5316\u30c8\u30f3\u30cd\u30eb\u306e\u5177\u4f53\u7684\u306a\u8a2d\u5b9a\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u3064\u3044\u3066\u5408\u610f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901a\u4fe1\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/li>\n\n\n\n<li>\u901a\u904e\u3055\u305b\u308bIP\u7bc4\u56f2\u3084\u30c7\u30fc\u30bf\u306e\u7a2e\u985e<\/li>\n\n\n\n<li>\u9577\u6642\u9593\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u6697\u53f7\u5316\u30ad\u30fc\u306e\u66f4\u65b0\u983b\u5ea6<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b8\u30e3\u30c3\u30af\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3053\u306e\u30c8\u30f3\u30cd\u30eb\u3092\u901a\u904e\u3059\u308b\u969b\u306b\u306f\u3001\u5408\u610f\u3055\u308c\u305f\u65b9\u5f0f\uff08AES-GCM\u306a\u3069\uff09\u3067\u6697\u53f7\u5316\u3055\u308c\u308b\u305f\u3081\u3001\u30c8\u30f3\u30cd\u30eb\u306e\u5916\u90e8\u304b\u3089\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u3063\u305f\u308a\u6539\u3056\u3093\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u30b8\u30e3\u30c3\u30af\u304cWi-Fi\u304b\u3089\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf\u901a\u4fe1\u306b\u5207\u308a\u66ff\u3048\u305f\u3068\u3057\u3066\u3082\u3001IKEv2\u306b\u3088\u3063\u3066\u30c8\u30f3\u30cd\u30eb\u306f\u7dad\u6301\u3055\u308c\u307e\u3059\u3002\u30b5\u30ea\u30fc\u304c\u7279\u5b9a\u306e\u901a\u4fe1\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u30eb\u30fc\u30bf\u30fc\u3092\u4ecb\u3057\u3066\u63a5\u7d9a\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001IPsec\u304c\u30d1\u30b1\u30c3\u30c8\u3092\u9069\u5207\u306b\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u63a5\u7d9a\u306f\u7dad\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u7d50\u679c\u3001\u30c7\u30fc\u30bf\u306f2\u3064\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3092\u8fc5\u901f\u304b\u3064\u5b89\u5168\u306b\u79fb\u52d5\u3057\u3001\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u306f\u6700\u521d\u304b\u3089\u6700\u5f8c\u307e\u3067\u4fdd\u8b77\u304a\u3088\u3073\u691c\u8a3c\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tiv\">IPsec VPN\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u3092\u624b\u52d5\u3067\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3001\u901a\u5e38\u306f\u30c7\u30d0\u30a4\u30b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3092\u958b\u304d\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u8a73\u7d30\u3092\u5165\u529b\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30eb\u30fc\u30eb\u3092\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a2d\u5b9a\u81ea\u4f53\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u624b\u52d5\u306e\u305f\u3081\u9593\u9055\u3048\u3084\u3059\u304f\u3001\u8a2d\u5b9a\u306b\u308f\u305a\u304b\u306a\u4e0d\u4e00\u81f4\u304c\u3042\u308b\u3060\u3051\u3067\u3082\u63a5\u7d9a\u304c\u5931\u6557\u3057\u3001\u30c7\u30fc\u30bf\u304c\u9732\u51fa\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u591a\u304f\u306e\u4eba\u306f\u8a2d\u5b9a\u3092\u81ea\u52d5\u3067\u884c\u3063\u3066\u304f\u308c\u308b<a href=\"https:\/\/www.privateinternetaccess.com\/ja\/blog\/download\/\">VPN\u30a2\u30d7\u30ea<\/a>\u306e\u5229\u7528\u3092\u9078\u3076\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec VPN\u3092\u624b\u52d5\u3067\u8a2d\u5b9a\u3057\u3066\u3082\u3046\u307e\u304f\u52d5\u4f5c\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u4e00\u822c\u7684\u306a\u554f\u984c\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong><strong>\u554f\u984c<\/strong><\/strong><\/td><td><strong><strong>\u89e3\u6c7a\u7b56<\/strong><\/strong><\/td><\/tr><tr><td><strong>\u26a0\ufe0f \u30d7\u30ed\u30dd\u30fc\u30b6\u30eb\u306e\u4e0d\u4e00\u81f4\uff1a<\/strong>2\u3064\u306eVPN\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u6697\u53f7\u5316\u65b9\u5f0f\u3084\u8a8d\u8a3c\u8a2d\u5b9a\u304c\u7570\u306a\u308b\u5834\u5408\u3001\u63a5\u7d9a\u3092\u78ba\u7acb\u3067\u304d\u307e\u305b\u3093\u3002<\/td><td>\u2705 \u6697\u53f7\u5316\u3001\u30cf\u30c3\u30b7\u30e5\u3001\u9375\u4ea4\u63db\u306b\u3064\u3044\u3066\u3001\u4e21\u5074\u3067\u540c\u3058\u30d7\u30ed\u30dd\u30fc\u30b6\u30eb\u5024\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td><\/tr><tr><td><strong>\u26a0\ufe0f NAT\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u306e\u554f\u984c\uff1a<\/strong>\u4e00\u90e8\u306e\u30eb\u30fc\u30bf\u30fc\u306f\u3001\u901a\u904e\u6642\u306b\u30c7\u30fc\u30bf\u30d1\u30b1\u30c3\u30c8\u3092\u5909\u66f4\u3059\u308b\u305f\u3081\u3001VPN\u30c8\u30f3\u30cd\u30eb\u304c\u6b63\u5e38\u306b\u6a5f\u80fd\u3057\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/td><td>\u2705 VPN\u8a2d\u5b9a\u3067NAT-T\uff08Network Address Translation Traversal\uff09\u3092\u6709\u52b9\u306b\u3057\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u30eb\u30fc\u30bf\u30fc\u3092\u5b89\u5168\u306b\u901a\u904e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td><\/tr><tr><td><strong>\u26a0\ufe0f \u52d5\u7684IP\u30a2\u30c9\u30ec\u30b9\u306e\u5909\u66f4\uff1a<\/strong>Wi-Fi\u304b\u3089\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf\u901a\u4fe1\u306b\u5207\u308a\u66ff\u3048\u308b\u3068IP\u30a2\u30c9\u30ec\u30b9\u304c\u5909\u308f\u308a\u3001\u30c8\u30f3\u30cd\u30eb\u304c\u5207\u65ad\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/td><td>\u2705 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5909\u66f4\u6642\u306b\u81ea\u52d5\u3067\u63a5\u7d9a\u3092\u518d\u78ba\u7acb\u3059\u308bIKEv2\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td><\/tr><tr><td><strong>\u26a0\ufe0f \u8a3c\u660e\u66f8\u30a8\u30e9\u30fc\uff1a<\/strong>\u30c7\u30d0\u30a4\u30b9\u306e\u6642\u523b\u304c\u6b63\u3057\u304f\u306a\u3044\u5834\u5408\u3084\u3001\u4fe1\u983c\u3055\u308c\u305f\u8a3c\u660e\u66f8\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/td><td>\u2705 \u30b7\u30b9\u30c6\u30e0\u30af\u30ed\u30c3\u30af\u304c\u6b63\u78ba\u3067\u3042\u308b\u3053\u3068\u3001\u307e\u305f\u6b63\u3057\u3044\u8a3c\u660e\u66f8\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3001\u4fe1\u983c\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306b\u3001<a href=\"https:\/\/www.privateinternetaccess.com\/ja\/buy-vpn-online\">Private Internet Access\uff08PIA\uff09<\/a>\u306a\u3069\u306e\u4fe1\u983c\u6027\u306e\u9ad8\u3044VPN\u30a2\u30d7\u30ea\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3001\u3053\u3046\u3057\u305f\u8a2d\u5b9a\u4e0a\u306e\u554f\u984c\u3092\u907f\u3051\u308b\u6700\u3082\u7c21\u5358\u306a\u65b9\u6cd5\u3067\u3059\u3002VPN\u30a2\u30d7\u30ea\u306a\u3089\u3001\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u3092\u81ea\u52d5\u3067\u51e6\u7406\u3057\u3001\u624b\u52d5\u3067\u8abf\u6574\u3059\u308b\u3053\u3068\u306a\u304f\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1765534419624\"><h3 class=\"schema-faq-question\">IPsec\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\u307e\u305f\u3001VPN\u3068\u3069\u3046\u95a2\u4fc2\u304c\u3042\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3> <p class=\"schema-faq-answer\"><a href=\"#wia\">IPsec\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff09<\/a>\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3092\u79fb\u52d5\u3059\u308b\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3001\u691c\u8a3c\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u898f\u683c\u3067\u3059\u3002\u5358\u4e00\u306e\u30c8\u30f3\u30cd\u30eb\u5185\u306e\u307f\u3067\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\u591a\u304f\u306eVPN\u3068\u306f\u7570\u306a\u308a\u3001IPsec\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u3092\u79fb\u52d5\u3059\u308b\u3059\u3079\u3066\u306e\u60c5\u5831\u30d1\u30b1\u30c3\u30c8\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u3053\u306e\u8ffd\u52a0\u306e\u4fdd\u8b77\u30ec\u30a4\u30e4\u30fc\u306b\u3088\u308a\u3001IPsec\u306f\u30aa\u30d5\u30a3\u30b9\u9593\u3084\u9060\u9694\u5730\u306e\u30c1\u30fc\u30e0\u9593\u3067\u5b89\u5b9a\u3057\u305f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u63a5\u7d9a\u3092\u5fc5\u8981\u3068\u3059\u308b\u4f01\u696d\u304b\u3089\u3001\u9577\u5e74\u306b\u308f\u305f\u3063\u3066\u4fe1\u983c\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002<br><br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765534433219\"><h3 class=\"schema-faq-question\">IPsec VPN\u306e\u4e3b\u306a\u69cb\u6210\u8981\u7d20\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3> <p class=\"schema-faq-answer\">IPsec VPN\u306f\u3001\u8a8d\u8a3c\u3068\u9375\u7ba1\u7406\u3092\u884c\u3046\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9375\u4ea4\u63db\uff08IKE\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3001\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\u30ab\u30d7\u30bb\u30eb\u5316\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30da\u30a4\u30ed\u30fc\u30c9\uff08ESP\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3044\u3046\u30012\u3064\u306e\u4e3b\u8981\u306a\u8981\u7d20\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<a href=\"#wda\">\u3053\u308c\u3089\u306f\u9023\u643a\u3057\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901a\u4fe1\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3057\u307e\u3059<\/a>\u3002<br><br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765534443186\"><h3 class=\"schema-faq-question\">IPsec\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3> <p class=\"schema-faq-answer\"><a href=\"#wic\">IPsec\u306e\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9<\/a>\u306f\u3001\u3069\u3061\u3089\u3082\u8ee2\u9001\u4e2d\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u65b9\u6cd5\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u306fIP\u30d1\u30b1\u30c3\u30c8\u5168\u4f53\u3092\u6697\u53f7\u5316\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u306f\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u307f\u3092\u6697\u53f7\u5316\u3059\u308b\u3082\u306e\u3067\u3059\u3002VPN\u3067\u306f\u3001\u30b5\u30a4\u30c8\u9593\u901a\u4fe1\u3084\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\u306e\u901a\u4fe1\u306b\u306f\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u304c\u4f7f\u7528\u3055\u308c\u30012\u3064\u306e\u500b\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b\u5834\u5408\u306b\u306f\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<br><br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765534452330\"><h3 class=\"schema-faq-question\">IPsec VPN\u306e\u8a2d\u5b9a\u306f\u96e3\u3057\u3044\u3067\u3059\u304b\uff1f<\/h3> <p class=\"schema-faq-answer\">IPsec\u306e\u624b\u52d5\u8a2d\u5b9a\u306f\u3001\u7279\u306b\u8a3c\u660e\u66f8\u7ba1\u7406\u3084\u30d7\u30ed\u30dd\u30fc\u30b6\u30eb\u306e\u4e00\u81f4\u3092\u53d6\u308b\u4f5c\u696d\u304c\u8907\u96d1\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u6697\u53f7\u5316\u8a2d\u5b9a\u3001\u9375\u4ea4\u63db\u65b9\u5f0f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306a\u3069\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u95a2\u3059\u308b\u6df1\u3044\u77e5\u8b58\u304c\u6c42\u3081\u3089\u308c\u308b\u304b\u3089\u3067\u3059\u3002\u4f01\u696d\u3067\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u901a\u5e38\u3001IT\u306e\u5c02\u9580\u5bb6\u304c\u8a2d\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002\u4e00\u65b9\u3001\u500b\u4eba\u5411\u3051VPN\u306e\u4e2d\u306b\u306f\u3001\u30a2\u30d7\u30ea\u306bIPsec\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u3044\u3063\u305fVPN\u306f\u3042\u3089\u304b\u3058\u3081\u8a2d\u5b9a\u304c\u3055\u308c\u3066\u304a\u308a\u3001\u7c21\u5358\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u307e\u3059\u304c\u3001\u8907\u96d1\u306a\u4f01\u696d\u7528\u9014\u306b\u306f\u3042\u307e\u308a\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>IPsec VPN\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u3059\u308b\u4f1a\u8a71\u3067\u3088\u304f\u8a71\u984c\u306b\u4e0a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u30c4\u30fc\u30eb\u3068\u3044\u3046\u3088\u308a\u306f\u3001\u307e\u308b\u3067\u96e3\u89e3\u306a\u6570\u5f0f\u306e\u3088\u3046\u306b\u601d\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u5b9f\u969b\u306f\u3001IPsec VPN\u306f2\u3064\u4ee5\u4e0a\u306e\u5730\u70b9\u306e\u9593\u3092\u79fb &hellip; <a href=\"https:\/\/www.privateinternetaccess.com\/ja\/blog\/ipsec-vpn\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;IPsec VPN\u3068\u306f\uff1f\u305d\u306e\u4ed5\u7d44\u307f\u30682026\u5e74\u3067\u3082\u4f7f\u308f\u308c\u7d9a\u3051\u308b\u7406\u7531&#8221;<\/span><\/a><\/p>\n","protected":false},"author":134,"featured_media":34456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_stopmodifiedupdate":false,"_modified_date":"","footnotes":""},"categories":[3065],"tags":[],"class_list":["post-34457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3065"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>IPsec VPN\u3068\u306f\uff1f\u305d\u306e\u4ed5\u7d44\u307f\u30682026\u5e74\u3067\u3082\u4f7f\u308f\u308c\u7d9a\u3051\u308b\u7406\u7531<\/title>\n<meta name=\"description\" content=\"IPsec VPN\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u4ed5\u7d44\u307f\u3084\u7279\u5fb4\u3001\u305d\u3057\u30662026\u5e74\u306b\u304a\u3044\u3066\u3082\u5b89\u5168\u306a\u901a\u4fe1\u898f\u683c\u3068\u3057\u3066\u4fe1\u983c\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.privateinternetaccess.com\/ja\/blog\/ipsec-vpn\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IPsec VPN\u3068\u306f\uff1f\u305d\u306e\u4ed5\u7d44\u307f\u30682026\u5e74\u3067\u3082\u4f7f\u308f\u308c\u7d9a\u3051\u308b\u7406\u7531\" \/>\n<meta property=\"og:description\" content=\"IPsec 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