{"id":348,"date":"2025-06-14T15:50:00","date_gmt":"2025-06-14T06:50:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=348"},"modified":"2025-10-22T11:08:39","modified_gmt":"2025-10-22T02:08:39","slug":"ipsec-vpn%ef%bc%88%e8%aa%b2%e9%a1%8c%e3%81%a8%e5%bf%9c%e7%94%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=348","title":{"rendered":"IPsec-VPN\uff08\u8ab2\u984c\u3068\u5fdc\u7528\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">IPsec\u3068NAT\/NAPT\u304c\u5171\u5b58\u3067\u304d\u306a\u3044\u7406\u7531<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPsec\u306f\u6697\u53f7\u5316\u3068\u8a8d\u8a3c\u306b\u3088\u3063\u3066\u901a\u4fe1\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u304c\u3001NAT\u3084NAPT\u3068\u306f\u57fa\u672c\u7684\u306b\u76f8\u6027\u304c\u826f\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001NAT\/NAPT\u304c\u30d1\u30b1\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u3084\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u66f8\u304d\u63db\u3048\u308b\u51e6\u7406\u3092\u884c\u3046\u305f\u3081\u3067\u3042\u308a\u3001IPsec\u306e\u4ed5\u69d8\u3068\u885d\u7a81\u3057\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001AH\u3001ESP\u3001IKE\u305d\u308c\u305e\u308c\u306e\u89b3\u70b9\u3067\u554f\u984c\u70b9\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">AH\u306b\u304a\u3051\u308b\u554f\u984c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AH\uff08Authentication Header\uff09\u306f\u3001IP\u30d8\u30c3\u30c0\u305d\u306e\u3082\u306e\u3092\u8a8d\u8a3c\u7bc4\u56f2\u306b\u542b\u3081\u307e\u3059\u3002\u305d\u306e\u305f\u3081NAT\u3084NAPT\u306b\u3088\u3063\u3066\u9001\u4fe1\u5143\u3084\u5b9b\u5148\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u3068\u3001\u53d7\u4fe1\u5074\u306f\u6539\u3056\u3093\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u3060\u3068\u5224\u65ad\u3057\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u307e\u3059\u3002\u3053\u306e\u305f\u3081NAT\u74b0\u5883\u3067\u306fAH\u306f\u5229\u7528\u304c\u96e3\u3057\u3044\u3068\u8003\u3048\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ESP\u306b\u304a\u3051\u308b\u554f\u984c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ESP\uff08Encapsulating Security Payload\uff09\u306f\u8a8d\u8a3c\u7bc4\u56f2\u306bIP\u30d8\u30c3\u30c0\u3092\u542b\u3081\u306a\u3044\u305f\u3081\u3001AH\u306e\u3088\u3046\u306b\u30a2\u30c9\u30ec\u30b9\u66f8\u304d\u63db\u3048\u3067\u8a8d\u8a3c\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057ESP\u306f\u6697\u53f7\u5316\u306e\u5bfe\u8c61\u306bTCP\/UDP\u30d8\u30c3\u30c0\u3092\u542b\u3080\u305f\u3081\u3001NAPT\u304c\u5fc5\u8981\u3068\u3059\u308b\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u66f8\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002NAPT\u6a5f\u80fd\u306f\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u57fa\u6e96\u306b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u8b58\u5225\u3057\u307e\u3059\u304c\u3001\u6697\u53f7\u5316\u306b\u3088\u3063\u3066\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u8aad\u307f\u53d6\u308c\u306a\u304f\u306a\u308a\u3001\u901a\u4fe1\u51e6\u7406\u304c\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IKE\u306b\u304a\u3051\u308b\u554f\u984c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IKE\uff08Internet Key Exchange\uff09\u306f\u3001IPsec\u3067\u306e\u9375\u4ea4\u63db\u3092\u62c5\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002IKE\u3067\u3084\u308a\u53d6\u308a\u3055\u308c\u308bISAKMP\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001RFC2408\u3067\u5b9a\u3081\u3089\u308c\u3066\u3044\u308b\u3068\u304a\u308aUDP\u306e500\u756a\u30dd\u30fc\u30c8\u3092\u56fa\u5b9a\u3067\u5229\u7528\u3057\u307e\u3059\u3002NAPT\u74b0\u5883\u3067\u306f\u901a\u5e38\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u5909\u63db\u3057\u3066\u901a\u4fe1\u3092\u6210\u7acb\u3055\u305b\u307e\u3059\u304c\u3001IKE\u306f\u30dd\u30fc\u30c8\u756a\u53f7\u304c\u56fa\u5b9a\u306e\u305f\u3081\u5909\u63db\u3067\u304d\u305a\u3001\u7d50\u679c\u3068\u3057\u3066\u901a\u4fe1\u304c\u6210\u7acb\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">NAT\/NAPT\u74b0\u5883\u3067\u767a\u751f\u3059\u308b\u5178\u578b\u7684\u306a\u554f\u984c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AH\u5229\u7528\u6642\u306f\u3001\u9001\u4fe1\u5143IP\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u305f\u3068\u8a8d\u8b58\u3055\u308c\u3001\u8a8d\u8a3c\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b<\/li>\n\n\n\n<li>ESP\u5229\u7528\u6642\u306f\u3001\u6697\u53f7\u5316\u306b\u3088\u308a\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u8aad\u307f\u53d6\u308c\u305a\u3001NAPT\u3067\u51e6\u7406\u3067\u304d\u306a\u3044<\/li>\n\n\n\n<li>IKE\u5229\u7528\u6642\u306f\u3001\u56fa\u5b9a\u30dd\u30fc\u30c8UDP500\u306e\u305f\u3081\u30dd\u30fc\u30c8\u5909\u63db\u304c\u884c\u3048\u306a\u3044<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u306eNAT Traversal\uff08NAT-T\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u554f\u984c\u3092\u89e3\u6d88\u3059\u308b\u305f\u3081\u306b\u8003\u6848\u3055\u308c\u305f\u306e\u304cNAT Traversal\uff08NAT-T\uff09\u3067\u3059\u3002NAT-T\u3067\u306fESP\u30d1\u30b1\u30c3\u30c8\u3092UDP\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3001\u901a\u5e38\u306eUDP\u901a\u4fe1\u3068\u3057\u3066NAT\/NAPT\u3092\u901a\u904e\u3055\u305b\u307e\u3059\u3002\u307e\u305fIKE\u306b\u3064\u3044\u3066\u3082UDP4500\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067NAPT\u306b\u3088\u308b\u30dd\u30fc\u30c8\u5909\u63db\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u901a\u4fe1\u304c\u6210\u7acb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">IPsec\u3068NAT\/NAPT\u306f\u305d\u306e\u307e\u307e\u3067\u306f\u5171\u5b58\u3067\u304d\u307e\u305b\u3093\u304c\u3001NAT Traversal\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u76f8\u4e92\u904b\u7528\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u8a66\u9a13\u3067\u306f\u300c\u306a\u305cAH\u304cNAT\u306b\u5bfe\u5fdc\u3067\u304d\u306a\u3044\u306e\u304b\u300d\u300cESP\u3067\u554f\u984c\u3068\u306a\u308b\u306e\u306f\u4f55\u304b\u300d\u300cNAT-T\u306e\u5f79\u5272\u306f\u4f55\u304b\u300d\u3068\u3044\u3063\u305f\u70b9\u304c\u983b\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">IPsec &#8211; NAT Traversal\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">NAT Traversal\uff08NAT-T\uff09<\/span><\/strong>\u306f\u3001NAT\u3084NAPT\u304c\u5b58\u5728\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3067IPsec\u3092\u554f\u984c\u306a\u304f\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u62e1\u5f35\u6280\u8853\u3067\u3059\u3002\u4ed5\u7d44\u307f\u3068\u3057\u3066\u306f\u3001ESP\u30d1\u30b1\u30c3\u30c8\u3092UDP\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u3053\u3068\u3067\u3001NAPT\u6a5f\u5668\u304c\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u66f8\u304d\u63db\u3048\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002UDP\u30d8\u30c3\u30c0\u306f\u6697\u53f7\u5316\u3055\u308c\u306a\u3044\u305f\u3081\u3001NAPT\u88c5\u7f6e\u304c\u30dd\u30fc\u30c8\u5909\u63db\u51e6\u7406\u3092\u884c\u3048\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u30ab\u30d7\u30bb\u30eb\u5316\u306e\u5224\u65ad\u306f\u8ab0\u304c\u884c\u3046\u306e\u304b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5224\u5b9a\u3068\u5207\u308a\u66ff\u3048\u306fIKE\u304c\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059\u3002IKE\u306e\u3084\u308a\u53d6\u308a\u306e\u4e2d\u3067\u3001NAT\/NAPT\u6a5f\u5668\u306e\u5b58\u5728\u3092\u691c\u51fa\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066UDP\u30ab\u30d7\u30bb\u30eb\u5316\u306b\u5207\u308a\u66ff\u3048\u308b\u3088\u3046\u30cd\u30b4\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u3057\u307e\u3059\u3002\u6d41\u308c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>IKE\u30d5\u30a7\u30fc\u30ba1\u3067\u3001\u76f8\u624b\u304cNAT Traversal\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u8def\u4e0a\u306bNAPT\u88c5\u7f6e\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u691c\u51fa\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066ISAKMP\u901a\u4fe1\u30dd\u30fc\u30c8\u3092UDP500\u304b\u30894500\u306b\u5207\u308a\u66ff\u3048\u308b\u3002<\/li>\n\n\n\n<li>IKE\u30d5\u30a7\u30fc\u30ba2\u3067\u3001ESP\u3092UDP\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30e2\u30fc\u30c9\u3092\u6c7a\u5b9a\u3002NAPT\u306b\u3088\u308bIP\u30a2\u30c9\u30ec\u30b9\u5909\u63db\u524d\u306e\u60c5\u5831\u3092\u4ea4\u63db\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u3002<\/li>\n\n\n\n<li>VPN\u78ba\u7acb\u5f8c\u3001ESP\u30d1\u30b1\u30c3\u30c8\u306fUDP\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u3066\u9001\u4fe1\u3055\u308c\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">IKE\u30d5\u30a7\u30fc\u30ba1\u3067\u306e\u62e1\u5f35\u6a5f\u80fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IKE\u30d5\u30a7\u30fc\u30ba1\u306eISAKMP\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306f\u3001NAT Traversal\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u62e1\u5f35\u8981\u7d20\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vendor ID\uff08\u30bf\u30a4\u30d713\uff09<\/strong><br>\u7b2c1\u3001\u7b2c2\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u300c\u81ea\u5206\u306fNAT Traversal\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u60c5\u5831\u3092\u4ea4\u63db\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>NAT-D\uff08\u30bf\u30a4\u30d720\uff09<\/strong><br>Main\u30e2\u30fc\u30c9\u3067\u306f\u7b2c3\u3001\u7b2c4\u30e1\u30c3\u30bb\u30fc\u30b8\u3001Aggressive\u30e2\u30fc\u30c9\u3067\u306f\u7b2c2\u3001\u7b2c3\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u9001\u4fe1\u3057\u3001\u7d4c\u8def\u4e0a\u306bNAT\u88c5\u7f6e\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u5207\u308a\u66ff\u3048<\/strong><br>NAT\u304c\u691c\u51fa\u3055\u308c\u308b\u3068\u3001Main\u30e2\u30fc\u30c9\u306f\u7b2c5\u3001\u7b2c6\u30e1\u30c3\u30bb\u30fc\u30b8\u4ee5\u964d\u3001Aggressive\u30e2\u30fc\u30c9\u306f\u7b2c3\u30e1\u30c3\u30bb\u30fc\u30b8\u4ee5\u964d\u3001ISAKMP\u901a\u4fe1\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u3092500\u304b\u30894500\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u3053\u306e\u969b\u3001UDP\u30d8\u30c3\u30c0\u3068ISAKMP\u30d8\u30c3\u30c0\u306e\u9593\u306bNon-ESP Marker\uff084\u30d0\u30a4\u30c8\u306e0\uff09\u304c\u633f\u5165\u3055\u308c\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u5909\u5316\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u3001NAT\u74b0\u5883\u4e0b\u3067\u306f\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u304c500\u4ee5\u5916\u306b\u66f8\u304d\u63db\u308f\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30eb\u30fc\u30bf\u5074ACL\u3067UDP500\u30844500\u4ee5\u5916\u306eISAKMP\u30d1\u30b1\u30c3\u30c8\u3082\u53d7\u4fe1\u3067\u304d\u308b\u3088\u3046\u8003\u616e\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">IKE\u30d5\u30a7\u30fc\u30ba2\u3067\u306e\u62e1\u5f35\u6a5f\u80fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IKE\u30d5\u30a7\u30fc\u30ba2\uff08Quick\u30e2\u30fc\u30c9\uff09\u3067\u306f\u3001ESP\u30d1\u30b1\u30c3\u30c8\u3092\u3069\u306e\u3088\u3046\u306bUDP\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Transform\uff08\u30bf\u30a4\u30d73\uff09<\/strong><br>UDP\u30ab\u30d7\u30bb\u30eb\u5316\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u304b\u3001UDP\u30ab\u30d7\u30bb\u30eb\u5316\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u304b\u3092\u4f1d\u3048\u308b\u3002<\/li>\n\n\n\n<li><strong>NAT-OA\uff08\u30bf\u30a4\u30d721\uff09<\/strong><br>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u5229\u7528\u6642\u3001NAPT\u3067\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u524d\u306e\u30aa\u30ea\u30b8\u30ca\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u76f8\u624b\u306b\u4f1d\u9054\u3059\u308b\u3053\u3068\u3067\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u30a8\u30e9\u30fc\u3092\u9632\u3050\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u62e1\u5f35\u306b\u3088\u3063\u3066\u3001NAT\u74b0\u5883\u3067\u3082IPsec-VPN\u304c\u5b89\u5b9a\u3057\u3066\u52d5\u4f5c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u30fbNAT\u74b0\u5883\u4e0b\u3067\u306fESP\u30d1\u30b1\u30c3\u30c8\u3092\u305d\u306e\u307e\u307e\u3067\u306f\u901a\u305b\u306a\u3044 \u2192 NAT Traversal\u3067UDP\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b<br>\u30fbIKE\u30d5\u30a7\u30fc\u30ba1\u3067Vendor ID\uff0813\uff09\u3068NAT-D\uff0820\uff09\u304c\u767b\u5834\u3059\u308b<br>\u30fbNAT\u3092\u691c\u51fa\u3059\u308b\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u304c<strong>500\u304b\u30894500\u3078\u5909\u66f4<\/strong>\u3055\u308c\u3001Non-ESP Marker\u304c\u8ffd\u52a0\u3055\u308c\u308b<br>\u30fbIKE\u30d5\u30a7\u30fc\u30ba2\u3067\u306fTransform\uff083\uff09\u3068NAT-OA\uff0821\uff09\u304c\u30ab\u30ae\u306b\u306a\u308b<br><br>\u3053\u3053\u306f\u300cIKE\u306e\u62e1\u5f35\u6a5f\u80fd\u3067NAT-T\u304c\u5b9f\u73fe\u3059\u308b\u300d\u3068\u3044\u3046\u6d41\u308c\u3092\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u3001\u51fa\u984c\u3067\u5f97\u70b9\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u52d5\u7684\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u305f\u62e0\u70b9\u3068\u306eIPsec-VPN\u63a5\u7d9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u3001\u4f01\u696d\u304c\u62e0\u70b9\u9593VPN\u3092\u69cb\u7bc9\u3059\u308b\u5834\u5408\u306f\u56fa\u5b9a\u306e\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u4e92\u3044\u306eVPN\u30d4\u30a2\uff08\u63a5\u7d9a\u76f8\u624b\uff09\u3068\u3057\u3066\u6307\u5b9a\u3057\u3066\u63a5\u7d9a\u3092\u884c\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u5c0f\u898f\u6a21\u62e0\u70b9\u3084\u55b6\u696d\u6240\u306e\u3088\u3046\u306b\u56fa\u5b9aIP\u3092\u5951\u7d04\u3057\u306a\u3044\u30b1\u30fc\u30b9\u3067\u306f\u3001\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u30b0\u30ed\u30fc\u30d0\u30ebIP\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3067\u3082\u3001\u5de5\u592b\u3092\u3059\u308c\u3070\u672c\u793e\u3068\u62e0\u70b9\u9593\u3067IPsec-VPN\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u52d5\u7684IP\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306e\u63a5\u7d9a\u958b\u59cb\u306e\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IKE\uff08\u9375\u4ea4\u63db\uff09\u3092\u59cb\u3081\u308b\u306b\u306f\u3001\u307e\u305a\u76f8\u624b\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u3063\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001<strong><span class=\"swl-marker mark_yellow\">\u52d5\u7684IP\u3092\u5229\u7528\u3059\u308b\u5074\u304c\u5fc5\u305a\u63a5\u7d9a\u306e\u958b\u59cb\u8005\uff08\u30a4\u30cb\u30b7\u30a8\u30fc\u30bf\uff09<\/span><\/strong>\u3068\u306a\u308a\u3001\u56fa\u5b9aIP\u3092\u6301\u3064\u5074\u306f\u5fdc\u7b54\u8005\uff08\u30ec\u30b9\u30dd\u30f3\u30c0\uff09\u3068\u3057\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u300c\u62e0\u70b9\u304b\u3089\u672c\u793e\u3078VPN\u3092\u5f35\u308a\u306b\u3044\u304f\u300d\u5f62\u3067\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a8d\u8a3c\u65b9\u5f0f\u306e\u9078\u629e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IKE Phase 1\u3067\u306f\u3001Main\u30e2\u30fc\u30c9\u3068Aggressive\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Main\u30e2\u30fc\u30c9 + Pre-Shared Key<\/strong> \u3067\u306f\u3001\u76f8\u624b\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066\u8a8d\u8a3c\u3092\u884c\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u52d5\u7684IP\u74b0\u5883\u3067\u306f\u3001\u76f8\u624b\u306eIP\u3092\u4e8b\u524d\u306b\u7279\u5b9a\u3067\u304d\u306a\u3044\u305f\u3081\u4f7f\u3048\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li><strong>Aggressive\u30e2\u30fc\u30c9 + Pre-Shared Key<\/strong> \u3067\u306f\u3001FQDN\uff08\u30c9\u30e1\u30a4\u30f3\u540d\uff09\u3084\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u3044\u3063\u305f\u8b58\u5225\u5b50\u3092ID\u3068\u3057\u3066\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u52d5\u7684IP\u3067\u3082\u8a8d\u8a3c\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u305f\u3081\u3001<strong>\u52d5\u7684\u30b0\u30ed\u30fc\u30d0\u30ebIP\u74b0\u5883\u3067\u306fAggressive\u30e2\u30fc\u30c9\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u57fa\u672c<\/strong>\u3067\u3059\u3002\u306a\u304a\u3001\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u65b9\u5f0f\u3092\u4f7f\u3048\u3070Main\u30e2\u30fc\u30c9\u3082\u5229\u7528\u53ef\u80fd\u3067\u3059\u304c\u3001\u4e00\u822c\u7684\u306a\u5c0f\u898f\u6a21\u62e0\u70b9\u3067\u306f\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u793e\u5074\u306e\u8a2d\u5b9a\u306e\u8003\u3048\u65b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u793e\u30eb\u30fc\u30bf\uff08\u56fa\u5b9aIP\u5074\uff09\u306f\u3001\u62e0\u70b9\u30eb\u30fc\u30bf\u3092\u8b58\u5225\u3059\u308b\u305f\u3081\u306bFQDN\u3092\u4f7f\u3044\u307e\u3059\u3002\u8a2d\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u5bfe\u5411\u62e0\u70b9\u306eID\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfe\u5411\u62e0\u70b9\u306eID: <code>office1.infraexpert.com<\/code>\uff08FQDN\uff09<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u65b9\u5f0f: Pre-Shared Key<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u30d1\u30b9\u30ef\u30fc\u30c9: <code>cisco<\/code><\/li>\n\n\n\n<li>\u30d5\u30a7\u30fc\u30ba1\u4ea4\u63db\u30e2\u30fc\u30c9: Aggressive\u30e2\u30fc\u30c9<\/li>\n\n\n\n<li>ISAKMP SA\u30d1\u30e9\u30e1\u30fc\u30bf: 3DES\u3001SHA-1\u3001DH\u30b0\u30eb\u30fc\u30d72\u3001\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306f\u30c7\u30d5\u30a9\u30eb\u30c8<\/li>\n\n\n\n<li>IPsec SA\u30d1\u30e9\u30e1\u30fc\u30bf: ESP\u30013DES\u3001HMAC-SHA1\u3001PFS\u306a\u3057\u3001\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u3001\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306f\u30c7\u30d5\u30a9\u30eb\u30c8<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u62e0\u70b9\u5074\u306e\u8a2d\u5b9a\u306e\u8003\u3048\u65b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u62e0\u70b9\u30eb\u30fc\u30bf\uff08\u52d5\u7684IP\u5074\uff09\u306f\u3001\u81ea\u8eab\u3092\u672c\u793e\u306b\u8b58\u5225\u3057\u3066\u3082\u3089\u3046\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001Aggressive\u30e2\u30fc\u30c9\u306e\u7b2c\u4e00\u30e1\u30c3\u30bb\u30fc\u30b8\u306b<strong>Identification\u30da\u30a4\u30ed\u30fc\u30c9<\/strong>\u3092\u542b\u3081\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u56fa\u5b9aIP\u5074\u306f\u62e0\u70b9\u3092FQDN\u3067\u8a8d\u8b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Identification\u30da\u30a4\u30ed\u30fc\u30c9:\n<ul class=\"wp-block-list\">\n<li>ID\u30bf\u30a4\u30d7: FQDN<\/li>\n\n\n\n<li>\u5024: <code>office1.infraexpert.com<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5bfe\u5411\u30d4\u30a2\u306eIP: <code>200.1.1.1<\/code>\uff08\u672c\u793e\u306e\u56fa\u5b9aIP\uff09<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u65b9\u5f0f: Pre-Shared Key<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u30d1\u30b9\u30ef\u30fc\u30c9: <code>cisco<\/code><\/li>\n\n\n\n<li>\u30d5\u30a7\u30fc\u30ba1\u4ea4\u63db\u30e2\u30fc\u30c9: Aggressive\u30e2\u30fc\u30c9<\/li>\n\n\n\n<li>ISAKMP SA\u30d1\u30e9\u30e1\u30fc\u30bf: 3DES\u3001SHA-1\u3001DH\u30b0\u30eb\u30fc\u30d72\u3001\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306f\u30c7\u30d5\u30a9\u30eb\u30c8<\/li>\n\n\n\n<li>IPsec SA\u30d1\u30e9\u30e1\u30fc\u30bf: ESP\u30013DES\u3001HMAC-SHA1\u3001PFS\u306a\u3057\u3001\u30c8\u30f3\u30cd\u30eb\u30e2\u30fc\u30c9\u3001\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306f\u30c7\u30d5\u30a9\u30eb\u30c8<\/li>\n<\/ul>\n\n\n\n<p class=\"is-style-icon_pen 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