{"id":5574,"date":"2025-08-09T19:42:02","date_gmt":"2025-08-09T10:42:02","guid":{"rendered":"https:\/\/sky-peace.net\/?p=5574"},"modified":"2025-08-09T19:42:02","modified_gmt":"2025-08-09T10:42:02","slug":"security-public","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/security-public\/","title":{"rendered":"\u516c\u5171\u56de\u7dda\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u2502VPN\u30fbIPsec\u30fbIKE\u30fbL2TP\u30fbGRE\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"<p>\u516c\u5171\u56de\u7dda\u2015\u2015\u305d\u308c\u306f\u3001\u8ab0\u3082\u304c\u81ea\u7531\u306b\u4f7f\u3048\u308b\u4fbf\u5229\u306a\u9053\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u540c\u6642\u306b\u5371\u967a\u3082\u6f5c\u3080\u5834\u6240\u3067\u3059\u3002\u4f01\u696d\u306e\u652f\u793e\u9593\u901a\u4fe1\u3084\u5728\u5b85\u52e4\u52d9\u306e\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u306f\u3001\u3053\u306e\u300c\u516c\u5171\u306e\u9053\u8def\u300d\u3092\u901a\u308b\u305f\u3081\u3001\u76d7\u8074\u30fb\u6539\u3056\u3093\u30fb\u306a\u308a\u3059\u307e\u3057\u3068\u3044\u3063\u305f\u30ea\u30b9\u30af\u306b\u5e38\u306b\u3055\u3089\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304cVPN\u3084\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6280\u8853\u3067\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\u30fbIP-VPN\u30fbSSL-VPN\u3068\u3044\u3063\u305f\u69cb\u7bc9\u65b9\u5f0f\u304b\u3089\u3001IPsec\u30fbIKE\u30fbAH\u30fbL2TP\u30fbGRE\u306a\u3069\u306e\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u307e\u3067\u3001\u4f53\u7cfb\u7684\u306b\u6574\u7406\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u3068\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u306e\u9055\u3044\u3084\u3001PPTP\u30fbIKEv2\u30fbNAT\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u306a\u3069\u8a66\u9a13\u3067\u3082\u983b\u51fa\u306e\u8981\u7d20\u3082\u30ab\u30d0\u30fc\u3002\u5b9f\u969b\u306e\u696d\u52d9\u30b7\u30fc\u30f3\u3084\u8eab\u8fd1\u306a\u4f8b\u3048\u3092\u4ea4\u3048\u306a\u304c\u3089\u3001\u516c\u5171\u56de\u7dda\u3092\u5b89\u5168\u306b\u4f7f\u3046\u305f\u3081\u306e\u5168\u4f53\u50cf\u3092\u3064\u304b\u3081\u308b\u3088\u3046\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a66\u9a13\u5bfe\u7b56\u3068\u3057\u3066\u306f\u3082\u3061\u308d\u3093\u3001\u5b9f\u52d9\u3067\u300cVPN\u3063\u3066\u3069\u308c\u3092\u9078\u3079\u3070\u3044\u3044\u306e\uff1f\u300d\u3068\u8ff7\u3046\u3068\u304d\u306e\u5224\u65ad\u57fa\u6e96\u306b\u3082\u306a\u308b\u5185\u5bb9\u3067\u3059\u3002\u3042\u306a\u305f\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u77e5\u8b58\u3092\u3001\u3053\u3053\u3067\u4e00\u6bb5\u30ec\u30d9\u30eb\u30a2\u30c3\u30d7\u3055\u305b\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\u30fbIP-VPN\u30fbSSL-VPN\u306e\u7279\u5fb4\u3068\u7528\u9014\u2502\u516c\u5171\u56de\u7dda\u306e\u5b89\u5168\u5229\u7528\u3068\u8a66\u9a13\u5bfe\u7b56<\/h2>\n<p>\u516c\u5171\u56de\u7dda\u3092\u4f7f\u3063\u305f\u62e0\u70b9\u9593\u901a\u4fe1\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u4ee3\u8868\u7684\u306aVPN\u65b9\u5f0f\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u8a66\u9a13\u3067\u3082\u983b\u51fa\u306e3\u7a2e\u985e\u2015\u2015\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\u3001IP-VPN\u3001SSL-VPN\u2015\u2015\u3092\u6bd4\u8f03\u3057\u306a\u304c\u3089\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3068\u7528\u9014\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>1. \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN<\/h3>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u6697\u53f7\u5316\u30c8\u30f3\u30cd\u30eb\u3092\u69cb\u7bc9\u3057\u3001\u62e0\u70b9\u9593\u3084\u30ea\u30e2\u30fc\u30c8\u7aef\u672b\u3068\u5b89\u5168\u306b\u901a\u4fe1\u3057\u307e\u3059\u3002\u3082\u3063\u3068\u3082\u4e00\u822c\u7684\u3067\u3001\u30b3\u30b9\u30c8\u3082\u4f4e\u3044\u65b9\u5f0f\u3067\u3059\u304c\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7d4c\u7531\u306e\u305f\u3081\u901a\u4fe1\u54c1\u8cea\u306f\u56de\u7dda\u72b6\u6cc1\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\u5b89\u4fa1\u30fb\u67d4\u8edf\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528<\/li>\n<li><strong>\u7528\u9014\u4f8b<\/strong>\uff1a\u5728\u5b85\u52e4\u52d9\u3001\u6d77\u5916\u62e0\u70b9\u63a5\u7d9a\u3001\u5c0f\u898f\u6a21\u62e0\u70b9\u9593\u901a\u4fe1<\/li>\n<li><strong>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1aIPsec\u3084SSL-VPN\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5b9f\u88c5\u304c\u591a\u3044<\/li>\n<\/ul>\n<h3>2. IP-VPN<\/h3>\n<p>\u901a\u4fe1\u4e8b\u696d\u8005\u304c\u63d0\u4f9b\u3059\u308b\u9589\u57df\u7db2\uff08\u5c02\u7528\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u3092\u5229\u7528\u3059\u308bVPN\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u7d4c\u7531\u3057\u306a\u3044\u305f\u3081\u3001\u901a\u4fe1\u54c1\u8cea\u3068\u5b89\u5b9a\u6027\u304c\u9ad8\u3044\u4e00\u65b9\u3001\u30b3\u30b9\u30c8\u306f\u9ad8\u3081\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\u9589\u57df\u7db2\u5229\u7528\u3001\u9ad8\u54c1\u8cea\u30fb\u9ad8\u5b89\u5b9a\u6027<\/li>\n<li><strong>\u7528\u9014\u4f8b<\/strong>\uff1a\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u63a5\u7d9a\u3001\u5927\u898f\u6a21\u62e0\u70b9\u9593\u901a\u4fe1<\/li>\n<li><strong>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1a\u300c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u4f7f\u308f\u306a\u3044\uff1d\u6697\u53f7\u5316\u4e0d\u8981\u300d\u306e\u30b1\u30fc\u30b9\u304c\u3042\u308b\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8981\u4ef6\u6b21\u7b2c\u3067\u6697\u53f7\u5316\u3092\u4f75\u7528\u3059\u308b\u5834\u5408\u3082\u3042\u308b<\/li>\n<\/ul>\n<h3>3. SSL-VPN<\/h3>\n<p>Web\u30d6\u30e9\u30a6\u30b6\u3084\u5c02\u7528\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u3001SSL\/TLS\u3092\u4f7f\u3063\u3066\u5b89\u5168\u306b\u901a\u4fe1\u3059\u308b\u65b9\u5f0f\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\u306e\u4e00\u7a2e\u3067\u3001\u65e2\u5b58\u306eWeb\u30dd\u30fc\u30c8\uff08443\u756a\uff09\u3092\u4f7f\u3048\u308b\u305f\u3081\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u8d8a\u3048\u304c\u5bb9\u6613\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1aSSL\/TLS\u5229\u7528\u3001\u8a2d\u5b9a\u5bb9\u6613\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u8ca0\u62c5\u5c11\u306a\u3081<\/li>\n<li><strong>\u7528\u9014\u4f8b<\/strong>\uff1a\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u304b\u3089\u793e\u5185Web\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/li>\n<li><strong>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1aTCP\u30dd\u30fc\u30c8443\u5229\u7528\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u306e\u6697\u53f7\u5316<\/li>\n<\/ul>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN<\/th>\n<th>IP-VPN<\/th>\n<th>SSL-VPN<\/th>\n<\/tr>\n<tr>\n<td>\u56de\u7dda\u7a2e\u5225<\/td>\n<td>\u516c\u5171\u56de\u7dda\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\uff09<\/td>\n<td>\u4e8b\u696d\u8005\u9589\u57df\u7db2<\/td>\n<td>\u516c\u5171\u56de\u7dda\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u6697\u53f7\u5316\u65b9\u5f0f<\/td>\n<td>IPsec \/ SSL<\/td>\n<td>\u5fc5\u8981\u306b\u5fdc\u3058\u3066<\/td>\n<td>SSL\/TLS<\/td>\n<\/tr>\n<tr>\n<td>\u901a\u4fe1\u54c1\u8cea<\/td>\n<td>\u5909\u52d5\u3042\u308a<\/td>\n<td>\u9ad8\u54c1\u8cea\u30fb\u5b89\u5b9a<\/td>\n<td>\u5909\u52d5\u3042\u308a<\/td>\n<\/tr>\n<tr>\n<td>\u30b3\u30b9\u30c8<\/td>\n<td>\u4f4e<\/td>\n<td>\u9ad8<\/td>\n<td>\u4f4e<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u7528\u9014<\/td>\n<td>\u62e0\u70b9\u9593\u63a5\u7d9a\u3001\u30c6\u30ec\u30ef\u30fc\u30af<\/td>\n<td>\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u63a5\u7d9a<\/td>\n<td>\u30e2\u30d0\u30a4\u30eb\u30a2\u30af\u30bb\u30b9\u3001\u793e\u5185Web\u5229\u7528<\/td>\n<\/tr>\n<\/table>\n<p><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong><\/p>\n<ul>\n<li>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\uff1a\u4e00\u822c\u9053\u8def\u3092\u4f7f\u3046\u304c\u3001\u901a\u4fe1\u5185\u5bb9\u306f\u6697\u53f7\u5316\u3057\u305f\u624b\u7d19\u3067\u9001\u308b\u30a4\u30e1\u30fc\u30b8<\/li>\n<li>IP-VPN\uff1a\u4f01\u696d\u5c02\u7528\u306e\u9ad8\u901f\u9053\u8def\u3092\u501f\u308a\u5207\u3063\u3066\u4f7f\u3046\u30a4\u30e1\u30fc\u30b8<\/li>\n<li>SSL-VPN\uff1a\u516c\u5171\u9053\u8def\u3092\u901a\u308b\u304c\u3001Web\u30b5\u30a4\u30c8\u306e\u300c\u9375\u30de\u30fc\u30af\u300d\u3092\u901a\u3063\u3066\u793e\u5185\u306b\u5165\u308b\u30a4\u30e1\u30fc\u30b8<\/li>\n<\/ul>\n<h2>IPsec\u306e\u4ed5\u7d44\u307f\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\uff0f\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u306e\u9055\u3044\u2502VPN\u6697\u53f7\u5316\u306e\u57fa\u790e<\/h2>\n<p>IPsec\uff08Internet Protocol Security\uff09\u306f\u3001IP\u30d1\u30b1\u30c3\u30c8\u5358\u4f4d\u3067\u6697\u53f7\u5316\u3084\u8a8d\u8a3c\u3092\u884c\u3044\u3001\u5b89\u5168\u306a\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u7fa4\u3067\u3059\u3002VPN\u69cb\u7bc9\u3067\u6700\u3082\u5229\u7528\u3055\u308c\u308b\u6697\u53f7\u5316\u65b9\u5f0f\u306e\u4e00\u3064\u3067\u3001\u7279\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\u3084IP-VPN\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>1. IPsec\u306e\u57fa\u672c\u69cb\u6210<\/h3>\n<p>IPsec\u306f\u5927\u304d\u304f<strong>2\u3064\u306e\u6a5f\u80fd\u30d7\u30ed\u30c8\u30b3\u30eb<\/strong>\u3068<strong>\u9375\u4ea4\u63db\u30d7\u30ed\u30c8\u30b3\u30eb<\/strong>\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>AH\uff08Authentication Header\uff09<\/strong>\uff1a\u30c7\u30fc\u30bf\u306e\u8a8d\u8a3c\u3068\u6539\u3056\u3093\u691c\u77e5\uff08\u6697\u53f7\u5316\u306f\u3057\u306a\u3044\uff09<\/li>\n<li><strong>ESP\uff08Encapsulating Security Payload\uff09<\/strong>\uff1a\u30c7\u30fc\u30bf\u306e\u6697\u53f7\u5316\uff0b\u8a8d\u8a3c<\/li>\n<li><strong>IKE\uff08Internet Key Exchange\uff09<\/strong>\uff1a\u6697\u53f7\u5316\u306b\u5fc5\u8981\u306a\u9375\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b89\u5168\u306b\u4ea4\u63db\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<\/ul>\n<h3>2. \u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9<\/h3>\n<ul>\n<li><strong>\u52d5\u4f5c<\/strong>\uff1aIP\u30d1\u30b1\u30c3\u30c8\u306e<strong>\u30da\u30a4\u30ed\u30fc\u30c9\u90e8\u5206<\/strong>\u306e\u307f\u6697\u53f7\u5316\uff08\u5143\u306eIP\u30d8\u30c3\u30c0\u306f\u6b8b\u3059\uff09<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u7aef\u672b\u9593\uff08\u30db\u30b9\u30c8\u9593\uff09\u901a\u4fe1\u306e\u6697\u53f7\u5316<\/li>\n<li><strong>\u30e1\u30ea\u30c3\u30c8<\/strong>\uff1a\u30d8\u30c3\u30c0\u304c\u305d\u306e\u307e\u307e\u306a\u306e\u3067\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8ca0\u8377\u304c\u5c11\u306a\u3044<\/li>\n<li><strong>\u30c7\u30e1\u30ea\u30c3\u30c8<\/strong>\uff1a\u5143\u306e\u9001\u4fe1\u5143\u30fb\u5b9b\u5148IP\u304c\u898b\u3048\u308b\u305f\u3081\u3001\u7d4c\u8def\u60c5\u5831\u306f\u79d8\u533f\u3067\u304d\u306a\u3044<\/li>\n<\/ul>\n<h3>3. \u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9<\/h3>\n<ul>\n<li><strong>\u52d5\u4f5c<\/strong>\uff1aIP\u30d1\u30b1\u30c3\u30c8\u5168\u4f53\u3092\u6697\u53f7\u5316\u3057\u3001\u65b0\u3057\u3044IP\u30d8\u30c3\u30c0\u3092\u4ed8\u52a0<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u9593VPN\uff08\u62e0\u70b9\u9593\u901a\u4fe1\uff09\u3067\u5229\u7528<\/li>\n<li><strong>\u30e1\u30ea\u30c3\u30c8<\/strong>\uff1a\u9001\u4fe1\u5143\u30fb\u5b9b\u5148IP\u3092\u79d8\u533f\u3067\u304d\u308b<\/li>\n<li><strong>\u30c7\u30e1\u30ea\u30c3\u30c8<\/strong>\uff1a\u65b0\u305f\u306aIP\u30d8\u30c3\u30c0\u5206\u306e\u901a\u4fe1\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u767a\u751f<\/li>\n<\/ul>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9<\/th>\n<th>\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9<\/th>\n<\/tr>\n<tr>\n<td>\u6697\u53f7\u5316\u7bc4\u56f2<\/td>\n<td>\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u307f<\/td>\n<td>\u30d1\u30b1\u30c3\u30c8\u5168\u4f53<\/td>\n<\/tr>\n<tr>\n<td>\u30d8\u30c3\u30c0<\/td>\n<td>\u5143\u306eIP\u30d8\u30c3\u30c0\u3092\u5229\u7528<\/td>\n<td>\u65b0\u3057\u3044IP\u30d8\u30c3\u30c0\u3092\u8ffd\u52a0<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u7528\u9014<\/td>\n<td>\u30db\u30b9\u30c8\u9593\u901a\u4fe1<\/td>\n<td>\u62e0\u70b9\u9593VPN<\/td>\n<\/tr>\n<tr>\n<td>\u79d8\u533f\u6027<\/td>\n<td>\u5b9b\u5148IP\u306f\u898b\u3048\u308b<\/td>\n<td>\u5b9b\u5148IP\u3092\u96a0\u305b\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u8a66\u9a13\u51fa\u984c\u50be\u5411<\/td>\n<td>IPsec\uff0b\u7aef\u672b\u9593<\/td>\n<td>IPsec\uff0b\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u9593<\/td>\n<\/tr>\n<\/table>\n<p><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong><\/p>\n<ul>\n<li>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\uff1a\u5c01\u7b52\u306e\u4e2d\u8eab\u3060\u3051\u3092\u6697\u53f7\u5316\u3057\u3001\u5c01\u7b52\u306e\u5b9b\u540d\u306f\u898b\u3048\u308b\u72b6\u614b<\/li>\n<li>\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\uff1a\u5c01\u7b52\u3054\u3068\u5927\u304d\u306a\u5c01\u7b52\u306b\u5165\u308c\u3001\u4e2d\u8eab\u3082\u5b9b\u540d\u3082\u898b\u3048\u306a\u3044\u72b6\u614b<\/li>\n<\/ul>\n<h2>IKE\u30d5\u30a7\u30fc\u30ba\u30fbIKE SA\u30fbChild SA\u30fbIKEv2\u306e\u6d41\u308c\u2502IPsec\u9375\u4ea4\u63db\u306e\u5168\u4f53\u50cf<\/h2>\n<p>IPsec\u306b\u3088\u308b\u6697\u53f7\u5316\u901a\u4fe1\u3067\u306f\u3001\u6697\u53f7\u5316\u306b\u5fc5\u8981\u306a\u9375\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b89\u5168\u306b\u5171\u6709\u3059\u308b\u305f\u3081\u306b<strong>IKE\uff08Internet Key Exchange\uff09<\/strong>\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002IKE\u306f\u3001\u901a\u4fe1\u76f8\u624b\u3068\u300c\u3069\u3046\u3084\u3063\u3066\u6697\u53f7\u5316\u3059\u308b\u304b\u300d\u3092\u4e8b\u524d\u306b\u53d6\u308a\u6c7a\u3081\u308b\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u3002<\/p>\n<h3>1. IKE\u30d5\u30a7\u30fc\u30ba1\uff08IKE SA\u306e\u78ba\u7acb\uff09<\/h3>\n<ul>\n<li><strong>\u76ee\u7684<\/strong>\uff1aIKE SA\uff08Security Association\uff09\u3092\u4f5c\u6210\u3057\u3001\u9375\u4ea4\u63db\u306e\u305f\u3081\u306e\u5b89\u5168\u306a\u7d4c\u8def\u3092\u78ba\u7acb\u3059\u308b<\/li>\n<li><strong>\u4e3b\u306a\u51e6\u7406<\/strong>\uff1a\n<ul>\n<li>\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3084\u8a8d\u8a3c\u65b9\u5f0f\u306e\u9078\u629e\uff08\u4f8b\uff1aAES\u3001SHA\u3001PSK\u306a\u3069\uff09<\/li>\n<li>Diffie-Hellman\u9375\u4ea4\u63db\u306b\u3088\u308b\u5171\u901a\u9375\u751f\u6210<\/li>\n<li>\u76f8\u624b\u306e\u8a8d\u8a3c\uff08\u8a3c\u660e\u66f8\u3084\u4e8b\u524d\u5171\u6709\u9375\uff09<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7d50\u679c<\/strong>\uff1a\u4ee5\u964d\u306e\u901a\u4fe1\u3067\u4f7f\u3046\u5b89\u5168\u306a\u7ba1\u7406\u30c1\u30e3\u30cd\u30eb\u304c\u3067\u304d\u308b<\/li>\n<\/ul>\n<h3>2. IKE\u30d5\u30a7\u30fc\u30ba2\uff08Child SA\u306e\u78ba\u7acb\uff09<\/h3>\n<ul>\n<li><strong>\u76ee\u7684<\/strong>\uff1a\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u306b\u4f7f\u3046Child SA\u3092\u4f5c\u6210<\/li>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\n<ul>\n<li>\u30d5\u30a7\u30fc\u30ba1\u3067\u78ba\u7acb\u3057\u305f\u5b89\u5168\u30c1\u30e3\u30cd\u30eb\u4e0a\u3067\u4ea4\u6e09\u3059\u308b<\/li>\n<li>\u30c7\u30fc\u30bf\u901a\u4fe1\u306e\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3084\u9375\u306e\u8a73\u7d30\u3092\u6c7a\u5b9a<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7d50\u679c<\/strong>\uff1aIPsec\u30c8\u30f3\u30cd\u30eb\u304c\u4f7f\u3048\u308b\u72b6\u614b\u306b\u306a\u308b<\/li>\n<\/ul>\n<h3>3. IKEv2\u306e\u6539\u5584\u70b9<\/h3>\n<ul>\n<li><strong>\u30e1\u30ea\u30c3\u30c8<\/strong>\uff1a\n<ul>\n<li>\u30d5\u30a7\u30fc\u30ba1\u3068\u30d5\u30a7\u30fc\u30ba2\u3092\u7d71\u5408\u3057\u3001\u5fc5\u8981\u306a\u30d1\u30b1\u30c3\u30c8\u4ea4\u63db\u56de\u6570\u304c\u6e1b\u5c11<\/li>\n<li>NAT\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u3084\u30e2\u30d3\u30ea\u30c6\u30a3\u306e\u30b5\u30dd\u30fc\u30c8\u5f37\u5316<\/li>\n<li>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u6539\u5584<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr>\n<th>\u7528\u8a9e<\/th>\n<th>\u5f79\u5272<\/th>\n<th>\u5bfe\u8c61<\/th>\n<th>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<tr>\n<td>IKE SA<\/td>\n<td>\u9375\u4ea4\u63db\u3084Child SA\u4ea4\u6e09\u7528\u306e\u5b89\u5168\u306a\u30c1\u30e3\u30cd\u30eb<\/td>\n<td>\u7ba1\u7406\u901a\u4fe1<\/td>\n<td>\u30d5\u30a7\u30fc\u30ba1\u3067\u4f5c\u6210<\/td>\n<\/tr>\n<tr>\n<td>Child SA<\/td>\n<td>\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u6697\u53f7\u5316<\/td>\n<td>\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf<\/td>\n<td>\u30d5\u30a7\u30fc\u30ba2\u3067\u4f5c\u6210<\/td>\n<\/tr>\n<tr>\n<td>IKEv1<\/td>\n<td>\u5f93\u6765\u306eIKE\u65b9\u5f0f<\/td>\n<td>\u9375\u4ea4\u63db<\/td>\n<td>\u30d5\u30a7\u30fc\u30ba1\uff0b\u30d5\u30a7\u30fc\u30ba2\u306e2\u6bb5\u968e<\/td>\n<\/tr>\n<tr>\n<td>IKEv2<\/td>\n<td>\u6539\u826f\u7248IKE\u65b9\u5f0f<\/td>\n<td>\u9375\u4ea4\u63db<\/td>\n<td>\u624b\u9806\u7c21\u7565\u5316\u3001\u6a5f\u80fd\u8ffd\u52a0<\/td>\n<\/tr>\n<\/table>\n<p><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong><\/p>\n<ul>\n<li>IKE SA\uff1a\u307e\u305a\u300c\u91d1\u5eab\u306e\u9375\u3092\u3069\u3046\u4f5c\u308b\u304b\u300d\u3092\u8a71\u3057\u5408\u3046\u4f1a\u8b70\u5ba4\uff08\u5b89\u5168\u306a\u5834\u6240\uff09\u3092\u4f5c\u308b<\/li>\n<li>Child SA\uff1a\u4f1a\u8b70\u5ba4\u3067\u6c7a\u3081\u305f\u65b9\u6cd5\u3067\u5b9f\u969b\u306e\u91d1\u5eab\u306e\u9375\u3092\u4f5c\u308a\u3001\u8377\u7269\u3092\u904b\u3073\u59cb\u3081\u308b<\/li>\n<li>IKEv2\uff1a\u4f1a\u8b70\u3068\u9375\u4f5c\u308a\u3092\u540c\u3058\u90e8\u5c4b\u3067\u540c\u6642\u306b\u9032\u3081\u308b\u52b9\u7387\u7684\u306a\u3084\u308a\u65b9<\/li>\n<\/ul>\n<h2>NAT\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u30fbPPTP\u30fbL2TP\u30fbGRE\u306e\u7279\u5fb4\u3068\u7528\u9014\u2502VPN\u88dc\u52a9\u6280\u8853\u3068\u8a66\u9a13\u983b\u51fa\u30d7\u30ed\u30c8\u30b3\u30eb<\/h2>\n<p>VPN\u3084\u6697\u53f7\u5316\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u969b\u306b\u306f\u3001IPsec\u3084SSL-VPN\u4ee5\u5916\u306b\u3082\u3001\u63a5\u7d9a\u3092\u88dc\u52a9\u3057\u305f\u308a\u3001\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u8a66\u9a13\u3067\u3082\u554f\u308f\u308c\u3084\u3059\u30444\u3064\u306e\u8981\u7d20\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>1. NAT\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\uff08NAT-T\uff09<\/h3>\n<ul>\n<li><strong>\u5f79\u5272<\/strong>\uff1aNAT\uff08Network Address Translation\uff09\u3092\u901a\u904e\u3067\u304d\u306a\u3044IPsec\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u3001UDP\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3066\u901a\u904e\u53ef\u80fd\u306b\u3059\u308b<\/li>\n<li><strong>\u7406\u7531<\/strong>\uff1aIPsec\u306eESP\u306fNAT\u3067\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u3068\u8a8d\u8a3c\u304c\u5931\u6557\u3059\u308b\u305f\u3081\u3001\u305d\u306e\u307e\u307e\u3067\u306f\u901a\u904e\u3067\u304d\u306a\u3044<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u3084\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u306eVPN\u63a5\u7d9a<\/li>\n<li><strong>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1aUDP\u30dd\u30fc\u30c84500\u5229\u7528\u304c\u591a\u3044<\/li>\n<\/ul>\n<h3>2. PPTP\uff08Point-to-Point Tunneling Protocol\uff09<\/h3>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\n<ul>\n<li>\u53e4\u304f\u304b\u3089\u3042\u308bVPN\u30d7\u30ed\u30c8\u30b3\u30eb\uff08Microsoft\u4e3b\u4f53\u3067\u666e\u53ca\uff09<\/li>\n<li>PPP\uff08Point-to-Point Protocol\uff09\u3092\u30d9\u30fc\u30b9\u306b\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/li>\n<li>\u6697\u53f7\u5316\u306fMPPE\uff08Microsoft Point-to-Point Encryption\uff09\u3092\u4f7f\u7528<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u8ab2\u984c<\/strong>\uff1a\u8106\u5f31\u6027\u304c\u6307\u6458\u3055\u308c\u3001\u73fe\u5728\u306f\u975e\u63a8\u5968<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u65e7\u30b7\u30b9\u30c6\u30e0\u3084\u4e92\u63db\u6027\u76ee\u7684<\/li>\n<\/ul>\n<h3>3. L2TP\uff08Layer 2 Tunneling Protocol\uff09<\/h3>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\n<ul>\n<li>PPTP\u3068Cisco\u306eL2F\u3092\u7d71\u5408\u3057\u3066\u4f5c\u3089\u308c\u305f\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb<\/li>\n<li>\u6697\u53f7\u5316\u6a5f\u80fd\u306f\u6301\u305f\u306a\u3044\u305f\u3081\u3001IPsec\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u306e\u304c\u4e00\u822c\u7684\uff08L2TP\/IPsec\uff09<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u30e2\u30d0\u30a4\u30ebVPN\u3001\u4f01\u696d\u5185\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9<\/li>\n<li><strong>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/strong>\uff1aL2\uff1d\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u30ec\u30d9\u30eb\u306e\u30c8\u30f3\u30cd\u30eb<\/li>\n<\/ul>\n<h3>4. GRE\uff08Generic Routing Encapsulation\uff09<\/h3>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\n<ul>\n<li>Cisco\u304c\u958b\u767a\u3057\u305f\u6c4e\u7528\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb<\/li>\n<li>\u30de\u30eb\u30c1\u30d7\u30ed\u30c8\u30b3\u30eb\u5bfe\u5fdc\uff08IPv4\u30fbIPv6\u30fbIPX\u306a\u3069\uff09<\/li>\n<li>\u6697\u53f7\u5316\u306f\u884c\u308f\u306a\u3044\u305f\u3081\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066IPsec\u3068\u4f75\u7528<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7528\u9014<\/strong>\uff1a\u7570\u7a2e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u63a5\u7d9a\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30c8\u30f3\u30cd\u30eb\u5316<\/li>\n<\/ul>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr>\n<th>\u6280\u8853<\/th>\n<th>\u5f79\u5272\uff0f\u5c64<\/th>\n<th>\u6697\u53f7\u5316\u6a5f\u80fd<\/th>\n<th>\u4e3b\u306a\u7528\u9014<\/th>\n<th>\u8a66\u9a13\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<tr>\n<td>NAT-T<\/td>\n<td>IPsec\u88dc\u52a9\uff08\u901a\u904e\u6027\uff09<\/td>\n<td>\u306a\u3057<\/td>\n<td>NAT\u74b0\u5883\u3067\u306eVPN<\/td>\n<td>UDP 4500<\/td>\n<\/tr>\n<tr>\n<td>PPTP<\/td>\n<td>\u30c8\u30f3\u30cd\u30eb\uff08L2\uff09<\/td>\n<td>MPPE<\/td>\n<td>\u65e7\u74b0\u5883VPN<\/td>\n<td>\u8106\u5f31\u6027\u3042\u308a<\/td>\n<\/tr>\n<tr>\n<td>L2TP<\/td>\n<td>\u30c8\u30f3\u30cd\u30eb\uff08L2\uff09<\/td>\n<td>\u306a\u3057\uff08IPsec\u3068\u4f75\u7528\uff09<\/td>\n<td>\u30e2\u30d0\u30a4\u30ebVPN<\/td>\n<td>L2TP\/IPsec<\/td>\n<\/tr>\n<tr>\n<td>GRE<\/td>\n<td>\u30c8\u30f3\u30cd\u30eb\uff08L3\uff09<\/td>\n<td>\u306a\u3057\uff08IPsec\u3068\u4f75\u7528\uff09<\/td>\n<td>\u30de\u30eb\u30c1\u30d7\u30ed\u30c8\u30b3\u30eb\u63a5\u7d9a<\/td>\n<td>Cisco\u7531\u6765<\/td>\n<\/tr>\n<\/table>\n<p><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong><\/p>\n<ul>\n<li>NAT-T\uff1a\u5927\u578b\u8377\u7269\u3092\u30c8\u30e9\u30c3\u30af\u304b\u3089\u5c0f\u578b\u30d0\u30f3\u306b\u7a4d\u307f\u66ff\u3048\u3066\u72ed\u3044\u9053\u8def\u3092\u901a\u308b\u5de5\u592b<\/li>\n<li>PPTP\uff1a\u6614\u306e\u90f5\u4fbf\u914d\u9001\u30b7\u30b9\u30c6\u30e0\u3002\u7c21\u5358\u3060\u3051\u3069\u9632\u72af\u304c\u5f31\u3044<\/li>\n<li>L2TP\uff1a\u5c02\u7528\u901a\u8def\u306f\u4f5c\u308b\u3051\u3069\u3001\u9375\u306f\u5225\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3067\u7ba1\u7406<\/li>\n<li>GRE\uff1a\u4f55\u3067\u3082\u5165\u308b\u6c4e\u7528\u30b3\u30f3\u30c6\u30ca\u3002\u305f\u3060\u3057\u4e2d\u8eab\u306e\u9632\u72af\u306f\u5225\u9014\u5fc5\u8981<\/li>\n<\/ul>\n<h2>\u516c\u5171\u56de\u7dda\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6280\u8853\u306e\u9078\u3073\u65b9\u3068\u8a66\u9a13\u5bfe\u7b56\u30dd\u30a4\u30f3\u30c8\u2502\u5b9f\u52d9\u3068IPA\u8a66\u9a13\u306b\u5f37\u304f\u306a\u308b<\/h2>\n<p>\u3053\u3053\u307e\u3067\u7d39\u4ecb\u3057\u305fVPN\u65b9\u5f0f\u3084\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u7279\u5fb4\u3084\u9069\u7528\u5834\u9762\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u5b9f\u52d9\u3067\u306f\u300c\u3069\u306e\u6280\u8853\u3092\u4f7f\u3046\u304b\u300d\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9078\u3076\u5fc5\u8981\u304c\u3042\u308a\u3001IPA\u8a66\u9a13\u3067\u306f\u305d\u308c\u3089\u306e<strong>\u9055\u3044\u3068\u7d44\u307f\u5408\u308f\u305b<\/strong>\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u304b\u304c\u554f\u308f\u308c\u307e\u3059\u3002<\/p>\n<h3>1. \u9078\u3073\u65b9\u306e\u57fa\u672c<\/h3>\n<ul>\n<li><strong>\u901a\u4fe1\u7d4c\u8def\u306e\u54c1\u8cea\u91cd\u8996<\/strong>\uff1aIP-VPN\uff08\u9589\u57df\u7db2\uff09<\/li>\n<li><strong>\u30b3\u30b9\u30c8\u91cd\u8996\uff0f\u67d4\u8edf\u6027\u91cd\u8996<\/strong>\uff1a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8VPN\uff08IPsec\u3084SSL-VPN\u3068\u7d44\u307f\u5408\u308f\u305b\uff09<\/li>\n<li><strong>\u30e2\u30d0\u30a4\u30eb\u3084\u5916\u90e8\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9<\/strong>\uff1aSSL-VPN\u307e\u305f\u306fL2TP\/IPsec<\/li>\n<li><strong>\u30de\u30eb\u30c1\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u7279\u6b8a\u74b0\u5883<\/strong>\uff1aGRE\uff0bIPsec<\/li>\n<li><strong>NAT\u74b0\u5883\u306e\u901a\u904e\u6027\u304c\u5fc5\u8981<\/strong>\uff1aNAT-T\u5bfe\u5fdc<\/li>\n<\/ul>\n<h3>2. \u7d44\u307f\u5408\u308f\u305b\u4f8b\uff08\u5b9f\u52d9\u30b7\u30ca\u30ea\u30aa\uff09<\/h3>\n<table border=\"1\" cellspacing=\"0\" 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