{"id":5659,"date":"2025-08-24T21:29:55","date_gmt":"2025-08-24T12:29:55","guid":{"rendered":"https:\/\/sky-peace.net\/?p=5659"},"modified":"2025-08-24T21:29:55","modified_gmt":"2025-08-24T12:29:55","slug":"sec-3","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/sec-3\/","title":{"rendered":"\u3010\u56f3\u89e3\u3067\u308f\u304b\u308b\u3011\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u91ce\u653b\u7565\u2502\u5348\u5f8c\u8a66\u9a13\u3067\u554f\u308f\u308c\u308bDNS\u30fbTLS\u30fbDMARC\u306e\u8981\u70b9\u6574\u7406"},"content":{"rendered":"<p>\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u8a66\u9a13\u306e\u5408\u683c\u3092\u76ee\u6307\u3059\u4e0a\u3067\u3001\u591a\u304f\u306e\u53d7\u9a13\u8005\u304c\u58c1\u3068\u611f\u3058\u308b\u306e\u304c\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u901a\u4fe1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u300d\u5206\u91ce\u3067\u3059\u3002DNS\u3001TLS\u3001VPN\u3001\u7121\u7ddaLAN\u3001\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u2026\u3002\u4e00\u3064\u3072\u3068\u3064\u306e\u6280\u8853\u306f\u7406\u89e3\u3067\u304d\u3066\u3082\u3001\u5168\u4f53\u50cf\u3084\u95a2\u9023\u6027\u304c\u898b\u3048\u306b\u304f\u304f\u3001\u77e5\u8b58\u304c\u65ad\u7247\u5316\u3057\u3066\u3057\u307e\u3044\u304c\u3061\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u7279\u306b\u5348\u5f8c\u554f\u984c\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6280\u8853\u304c\u8907\u96d1\u306b\u7d61\u307f\u5408\u3063\u305f\u30b7\u30ca\u30ea\u30aa\u304c\u51fa\u984c\u3055\u308c\u308b\u305f\u3081\u3001\u8868\u9762\u7684\u306a\u6697\u8a18\u3060\u3051\u3067\u306f\u5bfe\u5fdc\u304c\u56f0\u96e3\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u5408\u683c\u3078\u306e\u6700\u5f8c\u306e\u30d4\u30fc\u30b9\u3092\u57cb\u3081\u308b\u305f\u3081\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u983b\u51fa\u30c6\u30fc\u30de\u3092\u5fb9\u5e95\u7684\u306b\u6398\u308a\u4e0b\u3052\u307e\u3059\u3002\u300cDNSSEC\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u4f4f\u6240\u9332\u3092\u5b88\u308b\u305f\u3081\u306e\u30cf\u30f3\u30b3\u4ed8\u304d\u306e\u8a3c\u660e\u66f8\u300d\u300cVPN\u306f\u516c\u9053\u306b\u4f5c\u308b\u81ea\u5206\u3060\u3051\u306e\u5c02\u7528\u30c8\u30f3\u30cd\u30eb\u300d\u3068\u3044\u3063\u305f\u8eab\u8fd1\u306a\u4f8b\u3048\u3084\u8c4a\u5bcc\u306a\u56f3\u89e3\u3001\u8868\u3092\u4f7f\u3044\u3001\u8907\u96d1\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4ed5\u7d44\u307f\u3092\u76f4\u611f\u7684\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u89e3\u8aac\u3057\u307e\u3059\u3002\u5404\u6280\u8853\u306e\u300c\u306a\u305c\u300d\u3092\u7406\u89e3\u3057\u3001\u70b9\u3068\u70b9\u306e\u77e5\u8b58\u3092\u7dda\u3067\u7d50\u3073\u3064\u3051\u3001\u5348\u5f8c\u8a66\u9a13\u3092\u7a81\u7834\u3059\u308b\u672c\u8cea\u7684\u306a\u5fdc\u7528\u529b\u3092\u8eab\u306b\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<hr>\n<h2>\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u8a66\u9a13\u306e\u571f\u53f0\u2502OSI\u53c2\u7167\u30e2\u30c7\u30eb\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u5668\u306e\u5f79\u5272<\/h2>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u307e\u305a\u901a\u4fe1\u304c\u3069\u306e\u3088\u3046\u306a\u30eb\u30fc\u30eb\uff08\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u3067\u884c\u308f\u308c\u3001\u3069\u306e\u3088\u3046\u306a\u6a5f\u5668\u304c\u305d\u308c\u3092\u5b88\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5348\u5f8c\u554f\u984c\u306e\u8aad\u89e3\u306b\u3082\u4e0d\u53ef\u6b20\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u77e5\u8b58\u3068\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084IDS\/IPS\u3068\u3044\u3063\u305f\u57fa\u672c\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u5668\u306e\u5f79\u5272\u3092\u3001\u8eab\u8fd1\u306a\u4f8b\u3048\u3092\u4ea4\u3048\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>\u901a\u4fe1\u306e\u8a2d\u8a08\u56f3\uff1aOSI\u53c2\u7167\u30e2\u30c7\u30eb\u3068TCP\/IP\u30e2\u30c7\u30eb<\/h3>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\u304c\u901a\u4fe1\u3059\u308b\u969b\u306e\u8907\u96d1\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u3001\u5f79\u5272\u3054\u3068\u306b\u968e\u5c64\u5206\u3051\u3057\u305f\u3082\u306e\u304c\u300cOSI\u53c2\u7167\u30e2\u30c7\u30eb\u300d\u3067\u3059\u3002\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u8a66\u9a13\u3067\u306f\u3001\u7279\u306b\u5404\u5c64\u306e\u5f79\u5272\u3068\u4ee3\u8868\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p><strong>\u3010\u8eab\u8fd1\u306a\u4f8b\u3048\uff1a\u624b\u7d19\u3092\u9001\u308b\u30d7\u30ed\u30bb\u30b9\u3011<\/strong><br \/>\nOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306f\u3001\u624b\u7d19\u3092\u66f8\u3044\u3066\u76f8\u624b\u306b\u5c4a\u3051\u308b\u307e\u3067\u306e\u624b\u9806\u306b\u3088\u304f\u4f8b\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7b2c7\u5c64 \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64<\/strong>\uff1a\u624b\u7d19\u306e\u5185\u5bb9\u3092\u8003\u3048\u308b\uff08\u30d6\u30e9\u30a6\u30b6\u3067Web\u30b5\u30a4\u30c8\u3092\u898b\u308b\u306a\u3069\uff09<\/li>\n<li><strong>\u7b2c3\u5c64 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64<\/strong>\uff1a\u5b9b\u5148\u306e\u4f4f\u6240\u30fb\u6c0f\u540d\u3092\u66f8\u304f\uff08IP\u30a2\u30c9\u30ec\u30b9\u3067\u5b9b\u5148\u3092\u6c7a\u3081\u308b\uff09<\/li>\n<li><strong>\u7b2c2\u5c64 \u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64<\/strong>\uff1a\u5c01\u7b52\u306b\u5165\u308c\u308b\uff08Ethernet\u306a\u3069\u306e\u30eb\u30fc\u30eb\u3067\u30c7\u30fc\u30bf\u3092\u68b1\u5305\u3059\u308b\uff09<\/li>\n<li><strong>\u7b2c1\u5c64 \u7269\u7406\u5c64<\/strong>\uff1a\u90f5\u4fbf\u30dd\u30b9\u30c8\u306b\u6295\u51fd\u3057\u3001\u7269\u7406\u7684\u306b\u904b\u3076\uff08\u96fb\u6c17\u4fe1\u53f7\u3084\u5149\u4fe1\u53f7\u3067\u30c7\u30fc\u30bf\u3092\u9001\u308b\uff09<\/li>\n<\/ul>\n<p><i>[\u56f3\u89e3\uff1aOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e7\u968e\u5c64\u3068TCP\/IP\u30e2\u30c7\u30eb4\u968e\u5c64\u306e\u5bfe\u6bd4\u56f3\u3002\u5404\u5c64\u306e\u5f79\u5272\uff08\u4f8b\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64 &#8211; IP\u30a2\u30c9\u30ec\u30b9\u306b\u3088\u308b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\uff09\u3092\u8a18\u8f09]<\/i><\/p>\n<h3>\u4fe1\u983c\u6027\u306eTCP\u3068\u901f\u5ea6\u306eUDP\uff1a\u901a\u4fe1\u306e\u4f7f\u3044\u5206\u3051\u3092\u7406\u89e3\u3059\u308b<\/h3>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\uff08\u7b2c3\u5c64\uff09\u3067\u5b9b\u5148\u304c\u6c7a\u307e\u3063\u305f\u30c7\u30fc\u30bf\u306f\u3001\u305d\u306e\u4e0a\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\uff08\u7b2c4\u5c64\uff09\u3067\u3001\u3069\u306e\u3088\u3046\u306b\u5c4a\u3051\u308b\u304b\u304c\u6c7a\u3081\u3089\u308c\u307e\u3059\u3002\u305d\u306e\u4ee3\u8868\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u304cTCP\u3068UDP\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>TCP (Transmission Control Protocol)<\/strong>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\u901a\u4fe1\u76f8\u624b\u3068\u63a5\u7d9a\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\uff08\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u578b\uff09\u3001\u30c7\u30fc\u30bf\u304c\u6b63\u3057\u304f\u5c4a\u3044\u305f\u304b\u305d\u306e\u90fd\u5ea6\u78ba\u8a8d\u3059\u308b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u901a\u4fe1\u3067\u3059\u3002<\/li>\n<li><strong>\u5b9f\u751f\u6d3b\u30fb\u4ed5\u4e8b\u4f8b<\/strong>\uff1aWeb\u30b5\u30a4\u30c8\u306e\u95b2\u89a7\u3001\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306a\u3069\u3001\u30c7\u30fc\u30bf\u304c\u4e00\u3064\u3067\u3082\u6b20\u3051\u308b\u3068\u56f0\u308b\u5834\u5408\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>UDP (User Datagram Protocol)<\/strong>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\u76f8\u624b\u306e\u72b6\u6cc1\u3092\u78ba\u8a8d\u305b\u305a\u3001\u4e00\u65b9\u7684\u306b\u30c7\u30fc\u30bf\u3092\u9001\u308a\u3063\u3071\u306a\u3057\u306b\u3059\u308b\uff08\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u578b\uff09\u901a\u4fe1\u3067\u3059\u3002\u4fe1\u983c\u6027\u306f\u4f4e\u3044\u3067\u3059\u304c\u3001\u305d\u306e\u5206\u9ad8\u901f\u3067\u3059\u3002<\/li>\n<li><strong>\u5b9f\u751f\u6d3b\u30fb\u4ed5\u4e8b\u4f8b<\/strong>\uff1a\u52d5\u753b\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30b2\u30fc\u30e0\u3001DNS\u306e\u540d\u524d\u89e3\u6c7a\u306a\u3069\u3001\u591a\u5c11\u30c7\u30fc\u30bf\u304c\u6b20\u3051\u3066\u3082\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u6027\u304c\u91cd\u8996\u3055\u308c\u308b\u5834\u5408\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<table border=\"1\" style=\"width:100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u9805\u76ee<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">TCP<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">UDP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u63a5\u7d9a\u5f62\u614b<\/strong><\/td>\n<td style=\"padding: 8px;\">\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u578b<\/td>\n<td style=\"padding: 8px;\">\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u578b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4fe1\u983c\u6027<\/strong><\/td>\n<td style=\"padding: 8px;\">\u9ad8\u3044\uff08\u5230\u9054\u78ba\u8a8d\u3001\u9806\u5e8f\u5236\u5fa1\u3042\u308a\uff09<\/td>\n<td style=\"padding: 8px;\">\u4f4e\u3044\uff08\u78ba\u8a8d\u306a\u3057\u3001\u9001\u308a\u3063\u3071\u306a\u3057\uff09<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u901f\u5ea6<\/strong><\/td>\n<td style=\"padding: 8px;\">\u9045\u3044<\/td>\n<td style=\"padding: 8px;\">\u901f\u3044<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4e3b\u306a\u7528\u9014<\/strong><\/td>\n<td style=\"padding: 8px;\">Web\u95b2\u89a7\u3001\u30e1\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001<\/td>\n<td style=\"padding: 8px;\">\u52d5\u753b\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u3001DNS\u3001VoIP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u5883\u754c\u3092\u5b88\u308b\u756a\u4eba\u305f\u3061\uff1a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30fbIDS\/IPS\u30fbDMZ<\/h3>\n<p>\u5b89\u5168\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5916\u90e8\u304b\u3089\u306e\u4e0d\u6b63\u306a\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u300c\u5883\u754c\u9632\u5fa1\u300d\u304c\u57fa\u672c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/strong>\n<ul>\n<li><strong>\u5f79\u5272<\/strong>\uff1a\u4e8b\u524d\u306b\u8a2d\u5b9a\u3057\u305f\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u304d\u3001\u901a\u3057\u3066\u3088\u3044\u901a\u4fe1\u3068\u906e\u65ad\u3059\u308b\u901a\u4fe1\u3092\u5224\u65ad\u3059\u308b\u300c\u9632\u706b\u58c1\u300d\u3067\u3059\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1a\u5efa\u7269\u306e\u53d7\u4ed8\u3084\u7a7a\u6e2f\u306e\u4fdd\u5b89\u691c\u67fb\u5834\u3067\u3059\u3002\u8a31\u53ef\u8a3c\uff08IP\u30a2\u30c9\u30ec\u30b9\u3084\u30dd\u30fc\u30c8\u756a\u53f7\u306a\u3069\uff09\u3092\u6301\u3063\u3066\u3044\u308b\u4eba\u3060\u3051\u3092\u901a\u3057\u3001\u6301\u3063\u3066\u3044\u306a\u3044\u4eba\u306f\u5165\u308c\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>IDS\u3068IPS<\/strong>\n<ul>\n<li><strong>IDS (Intrusion Detection System \/ \u4e0d\u6b63\u4fb5\u5165\u691c\u77e5\u30b7\u30b9\u30c6\u30e0)<\/strong>\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30b5\u30fc\u30d0\u3078\u306e\u4e0d\u5be9\u306a\u901a\u4fe1\uff08\u653b\u6483\u306e\u5146\u5019\uff09\u3092\u691c\u77e5\u3057\u3001\u7ba1\u7406\u8005\u306b<strong>\u901a\u5831<\/strong>\u3057\u307e\u3059\u3002<\/li>\n<li><strong>IPS (Intrusion Prevention System \/ \u4e0d\u6b63\u4fb5\u5165\u9632\u5fa1\u30b7\u30b9\u30c6\u30e0)<\/strong>\uff1a\u4e0d\u5be9\u306a\u901a\u4fe1\u3092\u691c\u77e5\u3057\u3001\u901a\u5831\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u901a\u4fe1\u3092<strong>\u81ea\u52d5\u7684\u306b\u906e\u65ad<\/strong>\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1aIDS\u306f\u300c\u7570\u5e38\u3092\u77e5\u3089\u305b\u308b\u76e3\u8996\u30ab\u30e1\u30e9\u300d\u3001IPS\u306f\u300c\u4e0d\u5be9\u8005\u3092\u81ea\u52d5\u3067\u6355\u307e\u3048\u308b\u9ad8\u6027\u80fd\u306a\u8b66\u5099\u30b7\u30b9\u30c6\u30e0\u300d\u3068\u30a4\u30e1\u30fc\u30b8\u3059\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>DMZ (DeMilitarized Zone \/ \u975e\u6b66\u88c5\u5730\u5e2f)<\/strong>\n<ul>\n<li><strong>\u76ee\u7684<\/strong>\uff1aWeb\u30b5\u30fc\u30d0\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306a\u3069\u3001\u5916\u90e8\u306b\u516c\u958b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30b5\u30fc\u30d0\u3092\u3001\u793e\u5185\u306e\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u3001\u5916\u90e8\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3068\u306e\u4e2d\u9593\u306b\u8a2d\u7f6e\u3059\u308b\u305f\u3081\u306e\u7279\u5225\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9818\u57df\u3067\u3059\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1a\u4f1a\u793e\u306e\u300c\u53d7\u4ed8\u30ed\u30d3\u30fc\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u5916\u90e8\u306e\u4eba\u3082\u5165\u308c\u307e\u3059\u304c\u3001\u91cd\u8981\u306a\u60c5\u5831\u304c\u3042\u308b\u57f7\u52d9\u5ba4\uff08\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u3068\u306f\u58c1\u3067\u9694\u3066\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u4e07\u304c\u4e00\u3001\u53d7\u4ed8\u30ed\u30d3\u30fc\u3067\u554f\u984c\u304c\u8d77\u304d\u3066\u3082\u3001\u57f7\u52d9\u5ba4\u3078\u306e\u88ab\u5bb3\u3092\u6700\u5c0f\u9650\u306b\u98df\u3044\u6b62\u3081\u3089\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><i>[\u56f3\u89e3\uff1a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001DMZ\uff08Web\u30b5\u30fc\u30d0\u8a2d\u7f6e\uff09\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08PC\uff09\u304c\u63a5\u7d9a\u3055\u308c\u305f\u57fa\u672c\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u56f3]<\/i><\/p>\n<hr>\n<h2>DNS\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u8981\u70b9\u2502DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u3068DNSSEC\u306e\u4ed5\u7d44\u307f\u3092\u653b\u7565<\/h2>\n<p>\u79c1\u305f\u3061\u304c\u666e\u6bb5\u4f55\u6c17\u306a\u304f\u4f7f\u3063\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u540d\uff08\u4f8b\uff1awww.example.co.jp\uff09\u3068\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u901a\u4fe1\u3067\u4f7f\u3046IP\u30a2\u30c9\u30ec\u30b9\uff08\u4f8b\uff1a192.0.2.1\uff09\u3092\u7d50\u3073\u3064\u3051\u3066\u304f\u308c\u308b\u306e\u304cDNS\uff08Domain Name System\uff09\u3067\u3059\u3002\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u62c5\u3046\u305f\u3081\u3001DNS\u304c\u653b\u6483\u3055\u308c\u308b\u3068\u5e83\u7bc4\u56f2\u306b\u5f71\u97ff\u304c\u53ca\u3073\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u4ee3\u8868\u7684\u306a\u653b\u6483\u624b\u6cd5\u3068\u3001\u305d\u306e\u6838\u5fc3\u7684\u306a\u5bfe\u7b56\u3067\u3042\u308bDNSSEC\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3059\u3002<\/p>\n<h3>\u507d\u306e\u4f4f\u6240\u3092\u6559\u3048\u308b\u653b\u6483\uff1aDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u3068\u306f\uff1f<\/h3>\n<p>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u306f\u3001DNS\u30b5\u30fc\u30d0\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\uff08\u4e00\u6642\u7684\u306a\u8a18\u61b6\uff09\u306b\u507d\u306e\u60c5\u5831\u3092\u6ce8\u5165\uff08\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\uff1d\u6bd2\u3092\u76db\u308b\uff09\u3059\u308b\u653b\u6483\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6b63\u3057\u3044\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u3066\u3082\u3001\u653b\u6483\u8005\u304c\u7528\u610f\u3057\u305f\u60aa\u610f\u306e\u3042\u308b\u507d\u30b5\u30a4\u30c8\u306b\u8a98\u5c0e\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u653b\u6483\u306e\u6d41\u308c<\/strong><\/p>\n<ol>\n<li>\u653b\u6483\u8005\u304c\u3001\u6a19\u7684\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u306b\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u554f\u3044\u5408\u308f\u305b\u3092\u884c\u3046\u3002<\/li>\n<li>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u304c\u3001\u672c\u6765\u306e\u6a29\u5a01DNS\u30b5\u30fc\u30d0\u306b\u5fdc\u7b54\u3092\u554f\u3044\u5408\u308f\u305b\u308b\u3002<\/li>\n<li>\u305d\u306e\u5fdc\u7b54\u304c\u8fd4\u3063\u3066\u304f\u308b\u524d\u306b\u3001\u653b\u6483\u8005\u304c\u507d\u306eDNS\u5fdc\u7b54\uff08\u300c\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u3053\u3061\u3089\u300d\u3068\u3044\u3046\u5618\u306e\u60c5\u5831\uff09\u3092\u9001\u308a\u3064\u3051\u308b\u3002<\/li>\n<li>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u304c\u507d\u306e\u5fdc\u7b54\u3092\u4fe1\u3058\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u3057\u307e\u3044\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u305d\u306e\u507d\u306e\u60c5\u5831\u3092\u6559\u3048\u3066\u3057\u307e\u3046\u3002<\/li>\n<\/ol>\n<p><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong><br \/>\n\u3042\u306a\u305f\u304c\u3088\u304f\u5229\u7528\u3059\u308b\u56f3\u66f8\u9928\u306e\u53f8\u66f8\u3055\u3093\uff08DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\uff09\u306b\u300cA\u793e\u306e\u4f4f\u6240\u306f\uff1f\u300d\u3068\u5c0b\u306d\u305f\u3068\u3057\u307e\u3059\u3002\u53f8\u66f8\u3055\u3093\u304c\u96fb\u8a71\u5e33\uff08\u6a29\u5a01DNS\u30b5\u30fc\u30d0\uff09\u3067\u8abf\u3079\u3066\u3044\u308b\u9699\u306b\u3001\u60aa\u610f\u306e\u3042\u308b\u4eba\u7269\u304c\u6a2a\u304b\u3089\u300cA\u793e\u306e\u4f4f\u6240\u306f\u3053\u3053\u3060\u3088\u300d\u3068\u507d\u306e\u30e1\u30e2\u3092\u6e21\u3057\u307e\u3059\u3002\u53f8\u66f8\u3055\u3093\u304c\u305d\u308c\u3092\u4fe1\u3058\u3066\u3057\u307e\u3046\u3068\u3001\u6b21\u306b\u540c\u3058\u8cea\u554f\u3092\u3057\u305f\u5225\u306e\u4eba\u306b\u3082\u3001\u305d\u306e\u507d\u306e\u4f4f\u6240\u3092\u6559\u3048\u3066\u3057\u307e\u3046\u3001\u3068\u3044\u3046\u72b6\u6cc1\u3067\u3059\u3002<\/p>\n<p><i>[\u56f3\u89e3\uff1aDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u306e\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3002\u653b\u6483\u8005\u3001\u5229\u7528\u8005\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30fc\u30d0\u3001\u6a29\u5a01DNS\u30b5\u30fc\u30d0\u9593\u306e\u3084\u308a\u53d6\u308a\u3092\u6642\u7cfb\u5217\u3067\u793a\u3059]<\/i><\/p>\n<h3>\u300c\u672c\u7269\u300d\u306e\u8a3c\u660e\u3067DNS\u3092\u5b88\u308b\uff1aDNSSEC\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u30dd\u30a4\u30ba\u30cb\u30f3\u30b0\u306e\u3088\u3046\u306a\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u3001DNS\u306e\u5fdc\u7b54\u304c\u300c\u6b63\u5f53\u306a\u7ba1\u7406\u8005\u304b\u3089\u9001\u3089\u308c\u305f\u3001\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u672c\u7269\u300d\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u62e1\u5f35\u6a5f\u80fd\u304cDNSSEC\uff08DNS Security Extensions\uff09\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u76ee\u7684<\/strong>\uff1aDNSSEC\u306e\u76ee\u7684\u306f\u300c<strong>DNS\u5fdc\u7b54\u306e\u5b8c\u5168\u6027\u3068\u8a8d\u8a3c<\/strong>\u300d\u3067\u3059\u3002\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b\u3082\u306e\u3067\u306f\u306a\u3044\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1aDNSSEC\u306f\u3001\u5f79\u6240\u304c\u767a\u884c\u3059\u308b\u4f4f\u6c11\u7968\u306b\u62bc\u3055\u308c\u305f\u300c<strong>\u516c\u5370\uff08\u30cf\u30f3\u30b3\uff09<\/strong>\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u516c\u5370\u304c\u3042\u308c\u3070\u3001\u305d\u306e\u4f4f\u6c11\u7968\u304c\u672c\u7269\u3067\u3042\u308a\u3001\u9014\u4e2d\u3067\u8ab0\u304b\u304c\u66f8\u304d\u63db\u3048\u305f\u3082\u306e\u3067\u306f\u306a\u3044\u3068\u4fe1\u7528\u3067\u304d\u307e\u3059\u3002DNSSEC\u306f\u3001\u3053\u306e\u516c\u5370\u306e\u5f79\u5272\u3092\u96fb\u5b50\u7f72\u540d\u306b\u3088\u3063\u3066\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h4>\u4fe1\u983c\u306e\u9023\u9396\uff08Chain of Trust\uff09<\/h4>\n<p>DNSSEC\u306e\u6700\u3082\u91cd\u8981\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u306f\u300c\u4fe1\u983c\u306e\u9023\u9396\u300d\u3067\u3059\u3002DNS\u306f\u30eb\u30fc\u30c8\u30be\u30fc\u30f3\u3092\u9802\u70b9\u3068\u3057\u305f\u968e\u5c64\u69cb\u9020\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u89aa\u30be\u30fc\u30f3\u304c\u5b50\u30be\u30fc\u30f3\u306e\u60c5\u5831\u3092\u300c\u3053\u306e\u60c5\u5831\u306f\u672c\u7269\u3067\u3059\u3088\u300d\u3068\u96fb\u5b50\u7f72\u540d\u3067\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3053\u306e\u4fdd\u8a3c\u304c\u3001\u30eb\u30fc\u30c8\u304b\u3089\u76ee\u7684\u306e\u30c9\u30e1\u30a4\u30f3\u307e\u3067\u9023\u9396\u3057\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u5fdc\u7b54\u5168\u4f53\u306e\u4fe1\u983c\u6027\u304c\u62c5\u4fdd\u3055\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30eb\u30fc\u30c8\u30be\u30fc\u30f3<\/strong>\u304c\u300c<code>.jp<\/code>\u300d\u30be\u30fc\u30f3\u306e\u60c5\u5831\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n<li>\u300c<code>.jp<\/code>\u300d\u30be\u30fc\u30f3\u304c\u300c<code>.co.jp<\/code>\u300d\u30be\u30fc\u30f3\u306e\u60c5\u5831\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n<li>\u300c<code>.co.jp<\/code>\u300d\u30be\u30fc\u30f3\u304c\u300c<code>example.co.jp<\/code>\u300d\u30be\u30fc\u30f3\u306e\u60c5\u5831\u3092\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n<\/ol>\n<p>\u3053\u306e\u9023\u9396\u3092\u305f\u3069\u308b\u3053\u3068\u3067\u3001\u6700\u7d42\u7684\u306b\u53d7\u3051\u53d6\u3063\u305fIP\u30a2\u30c9\u30ec\u30b9\u304c\u3001\u78ba\u304b\u306b<code>example.co.jp<\/code>\u306e\u6b63\u5f53\u306a\u7ba1\u7406\u8005\u304c\u8a2d\u5b9a\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3068\u691c\u8a3c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n<p><i>[\u56f3\u89e3\uff1a\u300c\u4fe1\u983c\u306e\u9023\u9396\u300d\u306e\u968e\u5c64\u56f3\u3002\u30eb\u30fc\u30c8DNS\u304b\u3089\u9806\u306b\u3001\u4e0b\u4f4d\u306e\u30be\u30fc\u30f3\u306e\u516c\u958b\u9375\u306b\u7f72\u540d\u3057\u3066\u3044\u304f\u30a4\u30e1\u30fc\u30b8\u3092\u56f3\u793a]<\/i><\/p>\n<h3>\u5185\u90e8\u60c5\u5831\u306e\u6f0f\u6d29\u30ea\u30b9\u30af\uff1a\u30be\u30fc\u30f3\u8ee2\u9001\u306e\u9069\u5207\u306a\u8a2d\u5b9a<\/h3>\n<p>\u30be\u30fc\u30f3\u8ee2\u9001\u306f\u3001\u30d7\u30e9\u30a4\u30de\u30eaDNS\u30b5\u30fc\u30d0\u304b\u3089\u30bb\u30ab\u30f3\u30c0\u30eaDNS\u30b5\u30fc\u30d0\u3078DNS\u306e\u30ec\u30b3\u30fc\u30c9\u60c5\u5831\uff08\u30be\u30fc\u30f3\u30d5\u30a1\u30a4\u30eb\uff09\u3092\u8907\u88fd\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u8a2d\u5b9a\u3092\u8aa4\u308b\u3068\u3001\u7b2c\u4e09\u8005\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u90e8\u306e\u30db\u30b9\u30c8\u540d\u3084IP\u30a2\u30c9\u30ec\u30b9\u3068\u3044\u3063\u305f\u69cb\u6210\u60c5\u5831\u304c\u4e38\u3054\u3068\u76d7\u307e\u308c\u3001\u653b\u6483\u306e\u8db3\u304c\u304b\u308a\u3092\u4e0e\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30ea\u30b9\u30af<\/strong>\uff1a\u793e\u5185\u306e\u30b5\u30fc\u30d0\u3084PC\u306e\u4e00\u89a7\u304c\u66f8\u304b\u308c\u305f\u300c\u5185\u90e8\u7528\u306e\u96fb\u8a71\u5e33\u300d\u304c\u8ab0\u3067\u3082\u95b2\u89a7\u30fb\u30b3\u30d4\u30fc\u3067\u304d\u308b\u72b6\u614b\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3068\u540c\u3058\u3067\u3059\u3002<\/li>\n<li><strong>\u5bfe\u7b56<\/strong>\uff1a\u30be\u30fc\u30f3\u8ee2\u9001\u3092\u8a31\u53ef\u3059\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u3001\u30bb\u30ab\u30f3\u30c0\u30eaDNS\u30b5\u30fc\u30d0\u306a\u3069\u3001\u672c\u5f53\u306b\u5fc5\u8981\u306a\u30b5\u30fc\u30d0\u306e\u307f\u306b\u53b3\u3057\u304f\u5236\u9650\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>HTTPS\u306e\u5fc3\u81d3\u90e8\u2502TLS\u306b\u3088\u308b\u901a\u4fe1\u306e\u6697\u53f7\u5316\u3068TLS 1.3\u306e\u5909\u66f4\u70b9<\/h2>\n<p>\u30aa\u30f3\u30e9\u30a4\u30f3\u30b7\u30e7\u30c3\u30d4\u30f3\u30b0\u3067\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u60c5\u5831\u3092\u5165\u529b\u3057\u305f\u308a\u3001SNS\u3067\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u3084\u308a\u3068\u308a\u3057\u305f\u308a\u3059\u308b\u969b\u3001\u901a\u4fe1\u5185\u5bb9\u304c\u7b2c\u4e09\u8005\u306b\u76d7\u307f\u898b\u3089\u308c\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u306e\u5b89\u5168\u6027\u3092\u62c5\u4fdd\u3057\u3066\u3044\u308b\u306e\u304c<strong>TLS\uff08Transport Layer Security\uff09<\/strong>\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002Web\u30b5\u30a4\u30c8\u306eURL\u304c<code>http:\/\/<\/code>\u3067\u306f\u306a\u304f<code>https:\/\/<\/code>\u3067\u59cb\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u306eTLS\u306b\u3088\u3063\u3066\u901a\u4fe1\u304c\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306fTLS\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272\u3068\u3001\u3088\u308a\u9ad8\u901f\u304b\u3064\u5b89\u5168\u306b\u9032\u5316\u3057\u305fTLS 1.3\u306e\u91cd\u8981\u306a\u5909\u66f4\u70b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3>TLS\u304c\u4fdd\u8a3c\u3059\u308b3\u3064\u306e\u5927\u5207\u306a\u3053\u3068<\/h3>\n<p>TLS\u306f\u3001\u901a\u4fe1\u306e\u300c\u306e\u305e\u304d\u898b\u300d\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u300c\u6539\u3056\u3093\u300d\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u4e3b\u306b3\u3064\u306e\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u6697\u53f7\u5316 (Encryption)<\/strong>\uff1a\u901a\u4fe1\u5185\u5bb9\u3092\u6697\u53f7\u5316\u3057\u3001\u7b2c\u4e09\u8005\u304c\u30c7\u30fc\u30bf\u3092\u76d7\u307f\u898b\u3066\u3082\u610f\u5473\u304c\u5206\u304b\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8a8d\u8a3c (Authentication)<\/strong>\uff1a\u30b5\u30fc\u30d0\u8a3c\u660e\u66f8\u3092\u4f7f\u3063\u3066\u3001\u901a\u4fe1\u76f8\u624b\u304c\u672c\u7269\u306e\u30b5\u30fc\u30d0\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3092\u9632\u304e\u307e\u3059\u3002<\/li>\n<li><strong>\u5b8c\u5168\u6027 (Integrity)<\/strong>\uff1a\u901a\u4fe1\u30c7\u30fc\u30bf\u304c\u9014\u4e2d\u3067\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u306a\u3044\u304b\uff08\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\uff09\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p><strong>\u3010\u8eab\u8fd1\u306a\u4f8b\u3048\uff1a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5b8c\u5099\u306e\u73fe\u91d1\u8f38\u9001\u3011<\/strong><br \/>\nTLS\u901a\u4fe1\u306f\u3001\u73fe\u91d1\u8f38\u9001\u8eca\u306b\u4f8b\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6697\u53f7\u5316<\/strong>\uff1a\u73fe\u91d1\uff08\u30c7\u30fc\u30bf\uff09\u3092\u9811\u4e08\u306a\u91d1\u5eab\uff08\u6697\u53f7\u5316\uff09\u306b\u5165\u308c\u308b\u3002<\/li>\n<li><strong>\u8a8d\u8a3c<\/strong>\uff1a\u8f38\u9001\u5148\u306e\u9280\u884c\u304c\u3001\u672c\u7269\u306e\u8f38\u9001\u4f1a\u793e\u304b\u3092\u78ba\u8a8d\u3059\u308b\uff08\u30b5\u30fc\u30d0\u8a3c\u660e\u66f8\uff09\u3002<\/li>\n<li><strong>\u5b8c\u5168\u6027<\/strong>\uff1a\u91d1\u5eab\u306b\u7279\u6b8a\u306a\u5c01\u5370\uff08\u6539\u3056\u3093\u691c\u77e5\uff09\u3092\u3057\u3001\u9014\u4e2d\u3067\u958b\u3051\u3089\u308c\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<\/ul>\n<h3>\u901a\u4fe1\u524d\u306e\u300c\u8eab\u5143\u78ba\u8a8d\u300d\uff1aTLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u4ed5\u7d44\u307f<\/h3>\n<p>TLS\u901a\u4fe1\u3092\u59cb\u3081\u308b\u524d\u306b\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08\u3042\u306a\u305f\u306e\u30d6\u30e9\u30a6\u30b6\uff09\u3068\u30b5\u30fc\u30d0\u306e\u9593\u3067\u300c<strong>TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af<\/strong>\u300d\u3068\u547c\u3070\u308c\u308b\u4e8b\u524d\u306e\u3084\u308a\u53d6\u308a\u304c\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u3001\u5b89\u5168\u306a\u901a\u4fe1\u8def\u3092\u78ba\u7acb\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u53d6\u308a\u6c7a\u3081\u3092\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u5408\u610f\u3055\u308c\u308b\u5185\u5bb9<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u3059\u308bTLS\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\uff08\u4f8b\uff1aTLS 1.3\uff09<\/li>\n<li>\u4f7f\u7528\u3059\u308b<strong>\u6697\u53f7\u30b9\u30a4\u30fc\u30c8<\/strong>\uff08\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3084\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u7d44\u307f\u5408\u308f\u305b\uff09<\/li>\n<li>\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u306e\u300c\u5171\u901a\u9375\u300d\u306e\u5143\u306b\u306a\u308b\u60c5\u5831\u3092\u5b89\u5168\u306b\u4ea4\u63db<\/li>\n<\/ul>\n<p>\u3053\u306e\u3068\u304d\u3001\u30b5\u30fc\u30d0\u306f\u300c\u79c1\u306f\u672c\u7269\u3067\u3059\u3088\u300d\u3068\u3044\u3046\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u305f\u3081\u306b\u3001\u7b2c\u4e09\u8005\u6a5f\u95a2\uff08\u8a8d\u8a3c\u5c40\uff09\u304c\u767a\u884c\u3057\u305f<strong>\u30b5\u30fc\u30d0\u8a3c\u660e\u66f8<\/strong>\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u63d0\u793a\u3057\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u305d\u306e\u8a3c\u660e\u66f8\u304c\u4fe1\u983c\u3067\u304d\u308b\u3082\u306e\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306a\u3069\u3078\u306e\u63a5\u7d9a\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n<p><i>[\u56f3\u89e3\uff1a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4ea4\u63db\u3059\u308b\u3001TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u57fa\u672c\u7684\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3]<\/i><\/p>\n<h3>\u9ad8\u901f\u304b\u3064\u5b89\u5168\u306b\u9032\u5316\uff1aTLS 1.3\u306e\u4e3b\u8981\u306a\u5909\u66f4\u70b9<\/h3>\n<p>TLS 1.3\u306f\u3001\u305d\u308c\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\uff08\u7279\u306bTLS 1.2\uff09\u306b\u6bd4\u3079\u3066\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4e21\u9762\u3067\u5927\u5e45\u306b\u5f37\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u8a66\u9a13\u3067\u3082\u3001\u3053\u306e\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u7279\u5fb4\u304c\u554f\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>\u5909\u66f4\u70b91\uff1a\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u9ad8\u901f\u5316<\/h4>\n<p>TLS 1.2\u3067\u306f\u3001\u901a\u4fe1\u8def\u3092\u78ba\u7acb\u3059\u308b\u307e\u3067\u306b2\u5f80\u5fa9\u306e\u901a\u4fe1\uff082-RTT\uff09\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002\u4e00\u65b9\u3001TLS 1.3\u3067\u306f\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u52b9\u7387\u5316\u3055\u308c\u3001\u539f\u5247<strong>1\u5f80\u5fa9\uff081-RTT\uff09<\/strong>\u3067\u5b8c\u4e86\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001Web\u30b5\u30a4\u30c8\u306e\u8868\u793a\u901f\u5ea6\u304c\u5411\u4e0a\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u304c\u6539\u5584\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4>\u5909\u66f4\u70b92\uff1a\u8106\u5f31\u306a\u6697\u53f7\u6280\u8853\u306e\u5ec3\u6b62<\/h4>\n<p>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u8105\u304b\u3059\u53e4\u3044\u6697\u53f7\u65b9\u5f0f\u304c\u6839\u672c\u7684\u306b\u4f7f\u3048\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li><strong>RSA\u9375\u4ea4\u63db\u306e\u5ec3\u6b62<\/strong>\uff1a\u904e\u53bb\u306e\u901a\u4fe1\u304c\u89e3\u8aad\u3055\u308c\u308b\u30ea\u30b9\u30af\uff08Forward Secrecy\u304c\u306a\u3044\uff09\u304c\u3042\u308bRSA\u9375\u4ea4\u63db\u304c\u5ec3\u6b62\u3055\u308c\u3001\u524d\u65b9\u79d8\u533f\u6027\u3092\u6301\u3064<strong>ECDHE<\/strong>\u306a\u3069\u306e\u9375\u4ea4\u63db\u65b9\u5f0f\u304c\u5fc5\u9808\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li><strong>\u8106\u5f31\u306a\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u524a\u9664<\/strong>\uff1aRC4\u3084SHA-1\u3068\u3044\u3063\u305f\u3001\u8106\u5f31\u6027\u304c\u6307\u6458\u3055\u308c\u3066\u3044\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u5916\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<\/ul>\n<h4>\u5909\u66f4\u70b93\uff1a\u6697\u53f7\u5316\u7bc4\u56f2\u306e\u62e1\u5927<\/h4>\n<p>TLS 1.2\u3067\u306f\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u4e00\u90e8\uff08\u30b5\u30fc\u30d0\u8a3c\u660e\u66f8\u306a\u3069\uff09\u304c\u5e73\u6587\u3067\u3084\u308a\u53d6\u308a\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002TLS 1.3\u3067\u306f\u3001\u3088\u308a\u65e9\u3044\u6bb5\u968e\u3067\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u5927\u90e8\u5206\u304c\u6697\u53f7\u5316\u3055\u308c\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u4fdd\u8b77\u304c\u5f37\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u9805\u76ee<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">TLS 1.2<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">TLS 1.3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af<\/strong><\/td>\n<td style=\"padding: 8px;\">2\u5f80\u5fa9 (2-RTT)<\/td>\n<td style=\"padding: 8px;\"><strong>1\u5f80\u5fa9 (1-RTT)<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u9375\u4ea4\u63db\u65b9\u5f0f<\/strong><\/td>\n<td style=\"padding: 8px;\">RSA, DHE, ECDHE \u306a\u3069<\/td>\n<td style=\"padding: 8px;\"><strong>ECDHE, DHE \u306e\u307f<\/strong> (\u524d\u65b9\u79d8\u533f\u6027\u304c\u5fc5\u9808)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u6697\u53f7\u5316<\/strong><\/td>\n<td style=\"padding: 8px;\">\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u4e00\u90e8\u306f\u5e73\u6587<\/td>\n<td style=\"padding: 8px;\">\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u307b\u307c\u5168\u4f53\u304c\u6697\u53f7\u5316<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong><\/td>\n<td style=\"padding: 8px;\">\u53e4\u3044\u6697\u53f7\u65b9\u5f0f\u3092\u8a31\u53ef<\/td>\n<td style=\"padding: 8px;\"><strong>\u5f37\u529b\u306a\u6697\u53f7\u65b9\u5f0f\u306e\u307f\u306b\u9650\u5b9a<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<h2>VPN\u306e\u4ed5\u7d44\u307f\u3068\u7a2e\u985e\u2502\u5b89\u5168\u306a\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\u3092\u5b9f\u73fe\u3059\u308bIPsec\u3068SSL-VPN\u306e\u9055\u3044<\/h2>\n<p>\u30ea\u30e2\u30fc\u30c8\u30ef\u30fc\u30af\u306e\u666e\u53ca\u306b\u3088\u308a\u3001\u81ea\u5b85\u3084\u5916\u51fa\u5148\u304b\u3089\u793e\u5185\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5b89\u5168\u306b\u63a5\u7d9a\u3059\u308b\u5fc5\u8981\u6027\u304c\u5897\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u5b9f\u73fe\u3059\u308b\u6280\u8853\u304c<strong>VPN\uff08Virtual Private Network\uff09<\/strong>\u3067\u3059\u3002VPN\u306f\u3001\u591a\u304f\u306e\u4eba\u304c\u5229\u7528\u3059\u308b\u516c\u8846\u56de\u7dda\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\uff09\u4e0a\u306b\u3001\u3042\u305f\u304b\u3082\u5c02\u7528\u7dda\u306e\u3088\u3046\u306a\u4eee\u60f3\u7684\u306a\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u901a\u4fe1\u8def\u3092\u69cb\u7bc9\u3057\u3001\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u3010\u8eab\u8fd1\u306a\u4f8b\u3048\uff1a\u516c\u9053\u4e0a\u306e\u5c02\u7528\u88c5\u7532\u30c8\u30f3\u30cd\u30eb\u3011<\/strong><br \/>VPN\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u300c\u8ab0\u3067\u3082\u901a\u308c\u308b\u516c\u9053\u300d\u3060\u3068\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002VPN\u306f\u3001\u3053\u306e\u516c\u9053\u306e\u4e2d\u306b\u3001\u7279\u5b9a\u306e\u5229\u7528\u8005\u3060\u3051\u304c\u901a\u308c\u308b\u300c<strong>\u81ea\u5206\u5c02\u7528\u306e\u88c5\u7532\u30c8\u30f3\u30cd\u30eb<\/strong>\u300d\u3092\u4f5c\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30c8\u30f3\u30cd\u30eb\uff08\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\uff09<\/strong>\uff1a\u30c7\u30fc\u30bf\u3092\u7279\u5225\u306a\u30d1\u30b1\u30c3\u30c8\u3067\u8986\u3044\u96a0\u3057\uff08\u30ab\u30d7\u30bb\u30eb\u5316\uff09\u3001\u5916\u90e8\u304b\u3089\u898b\u3048\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u88c5\u7532\uff08\u6697\u53f7\u5316\uff09<\/strong>\uff1a\u30c8\u30f3\u30cd\u30eb\u306e\u4e2d\u3092\u901a\u308b\u30c7\u30fc\u30bf\u306f\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u4e07\u304c\u4e00\u30c8\u30f3\u30cd\u30eb\u304c\u7834\u3089\u308c\u3066\u3082\u4e2d\u8eab\u3092\u8aad\u307f\u53d6\u3089\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h3>VPN\u306e\u6838\u5fc3\u6280\u8853\uff1a\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3068\u30ab\u30d7\u30bb\u30eb\u5316<\/h3>\n<p>VPN\u304c\u5b89\u5168\u306a\u901a\u4fe1\u8def\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u6838\u5fc3\u6280\u8853\u304c\u300c<strong>\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/strong>\u300d\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u9001\u308a\u305f\u3044\u30c7\u30fc\u30bf\uff08\u5143\u306e\u30d1\u30b1\u30c3\u30c8\uff09\u3092\u3001\u3055\u3089\u306b\u5225\u306e\u30d1\u30b1\u30c3\u30c8\u306e\u4e2d\u306b\u5165\u308c\u3066\u3057\u307e\u3046\u300c<strong>\u30ab\u30d7\u30bb\u30eb\u5316<\/strong>\u300d\u3068\u3044\u3046\u624b\u6cd5\u3092\u7528\u3044\u3066\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002\u5143\u306e\u30d1\u30b1\u30c3\u30c8\u306f\u6697\u53f7\u5316\u3055\u308c\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u7d4c\u7531\u3059\u308b\u305f\u3081\u306e\u65b0\u3057\u3044\u30d8\u30c3\u30c0\u60c5\u5831\u304c\u4ed8\u4e0e\u3055\u308c\u308b\u3053\u3068\u3067\u3001\u5b89\u5168\u306b\u76ee\u7684\u5730\u307e\u3067\u5c4a\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<p><i>[\u56f3\u89e3\uff1aVPN\u306e\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u306e\u6982\u5ff5\u56f3\u3002\u5143\u306e\u30d1\u30b1\u30c3\u30c8\u304c\u6697\u53f7\u5316\u3055\u308c\u3001\u65b0\u3057\u3044\u30d8\u30c3\u30c0\u304c\u4ed8\u4e0e\u3055\u308c\u3066\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u308b\u69d8\u5b50]<\/i><\/p>\n<h3>\u5348\u5f8c\u8a66\u9a13\u306e\u983b\u51fa\u8ad6\u70b9\uff1aIPsec\u3068SSL-VPN\u306e\u9055\u3044<\/h3>\n<p>VPN\u3092\u5b9f\u73fe\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u306f\u3044\u304f\u3064\u304b\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u8a66\u9a13\u3067\u7279\u306b\u91cd\u8981\u306a\u306e\u304c<strong>IPsec<\/strong>\u3068<strong>SSL-VPN<\/strong>\u3067\u3059\u3002\u4e21\u8005\u306f\u52d5\u4f5c\u3059\u308bOSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u968e\u5c64\u304c\u7570\u306a\u308a\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u7279\u5fb4\u3084\u7528\u9014\u3082\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n<h4>IPsec (Internet Protocol Security)<\/h4>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\uff08\u7b2c3\u5c64\uff09\u3067\u52d5\u4f5c\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u3053\u306e\u5c64\u3067\u901a\u4fe1\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u3001\u4e0a\u4f4d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08Web\u3001\u30e1\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30eb\u5171\u6709\u306a\u3069\uff09\u306e\u7a2e\u985e\u3092\u554f\u308f\u305a\u3001\u3059\u3079\u3066\u306eIP\u901a\u4fe1\u3092\u307e\u3068\u3081\u3066\u6697\u53f7\u5316\u3067\u304d\u308b\u306e\u304c\u5927\u304d\u306a\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1a\u6c4e\u7528\u6027\u304c\u9ad8\u304f\u3001\u62e0\u70b9\u9593VPN\uff08\u4f8b\uff1a\u6771\u4eac\u672c\u793e\u3068\u5927\u962a\u652f\u793e\u3092\u63a5\u7d9a\uff09\u306a\u3069\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u3092\u5b89\u5168\u306b\u63a5\u7d9a\u3059\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u5b9f\u751f\u6d3b\u30fb\u4ed5\u4e8b\u4f8b<\/strong>\uff1a\u4f01\u696d\u306e\u5404\u62e0\u70b9\u3092\u7d50\u3076\u3001\u5e38\u6642\u63a5\u7d9a\u3055\u308c\u305f\u30bb\u30ad\u30e5\u30a2\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u69cb\u7bc9\u3002\u5229\u7528\u8005\u306ePC\u306b\u306f\u5c02\u7528\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/li>\n<\/ul>\n<h4>SSL-VPN<\/h4>\n<p>\u3088\u308a\u4e0a\u4f4d\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u5c64\u301c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\uff08\u7b2c5\u301c7\u5c64\uff09\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002Web\u30d6\u30e9\u30a6\u30b6\u306b\u6a19\u6e96\u3067\u642d\u8f09\u3055\u308c\u3066\u3044\u308bTLS\u30d7\u30ed\u30c8\u30b3\u30eb\uff08SSL\u306e\u5f8c\u7d99\uff09\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u3001\u5229\u7528\u8005\u306fPC\u306b\u5c02\u7528\u30bd\u30d5\u30c8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u30d6\u30e9\u30a6\u30b6\u3060\u3051\u3067\u624b\u8efd\u306b\u5229\u7528\u3067\u304d\u308b\u306e\u304c\u5229\u70b9\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5fb4<\/strong>\uff1aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5358\u4f4d\u3067\u306e\u7d30\u304b\u3044\u30a2\u30af\u30bb\u30b9\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u304c\u53ef\u80fd\u3002\u30ea\u30e2\u30fc\u30c8\u30ef\u30fc\u30ab\u30fc\u304c\u7279\u5b9a\u306e\u793e\u5185Web\u30b7\u30b9\u30c6\u30e0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3088\u3046\u306a\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u5b9f\u751f\u6d3b\u30fb\u4ed5\u4e8b\u4f8b<\/strong>\uff1a\u81ea\u5b85\u304b\u3089\u4f1a\u793e\u306e\u52e4\u6020\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3084\u7d4c\u8cbb\u7cbe\u7b97\u30b7\u30b9\u30c6\u30e0\u306bWeb\u30d6\u30e9\u30a6\u30b6\u7d4c\u7531\u3067\u5b89\u5168\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3002<\/li>\n<\/ul>\n<table border=\"1\" style=\"width:100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u9805\u76ee<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">IPsec<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">SSL-VPN<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u52d5\u4f5c\u968e\u5c64<\/strong><\/td>\n<td style=\"padding: 8px;\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64 (L3)<\/td>\n<td style=\"padding: 8px;\">\u30bb\u30c3\u30b7\u30e7\u30f3\u5c64\u301c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64 (L5-L7)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4fdd\u8b77\u5bfe\u8c61<\/strong><\/td>\n<td style=\"padding: 8px;\">\u3059\u3079\u3066\u306eIP\u901a\u4fe1<\/td>\n<td style=\"padding: 8px;\">\u4e3b\u306bWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u901a\u4fe1<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/strong><\/td>\n<td style=\"padding: 8px;\">\u5c02\u7528\u30bd\u30d5\u30c8\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u591a\u3044<\/td>\n<td style=\"padding: 8px;\">Web\u30d6\u30e9\u30a6\u30b6\u306e\u307f\uff08\u539f\u5247\u4e0d\u8981\uff09<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4e3b\u306a\u7528\u9014<\/strong><\/td>\n<td style=\"padding: 8px;\">\u62e0\u70b9\u9593\u63a5\u7d9a\u3001\u5305\u62ec\u7684\u306a\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9<\/td>\n<td style=\"padding: 8px;\">\u7279\u5b9a\u30a2\u30d7\u30ea\u3078\u306e\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u89aa\u548c\u6027<\/strong><\/td>\n<td style=\"padding: 8px;\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u7279\u5b9a\u306e\u30dd\u30fc\u30c8\uff08UDP\/500\u306a\u3069\uff09\u3092\u958b\u3051\u308b\u5fc5\u8981\u304c\u3042\u308b<\/td>\n<td style=\"padding: 8px;\">HTTPS\u3068\u540c\u3058\u30dd\u30fc\u30c8\uff08TCP\/443\uff09\u3092\u4f7f\u3046\u305f\u3081\u3001FW\u3092\u901a\u904e\u3057\u3084\u3059\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u7121\u7ddaLAN\uff08Wi-Fi\uff09\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5909\u9077\u2502WPA2\u306e\u8ab2\u984c\u3068WPA3\u306e\u5f37\u5316\u70b9\u3092\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u30aa\u30d5\u30a3\u30b9\u3084\u5bb6\u5ead\u3001\u516c\u5171\u306e\u5834\u6240\u3067\u5f53\u305f\u308a\u524d\u306b\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u7121\u7ddaLAN\uff08Wi-Fi\uff09\u306f\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u304c\u3001\u901a\u4fe1\u304c\u96fb\u6ce2\u3067\u98db\u3073\u4ea4\u3046\u305f\u3081\u3001\u5e38\u306b\u76d7\u8074\u3084\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u30ea\u30b9\u30af\u306b\u6652\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30ea\u30b9\u30af\u304b\u3089\u901a\u4fe1\u3092\u5b88\u308b\u305f\u3081\u3001\u7121\u7ddaLAN\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u898f\u683c\u306fWEP\u304b\u3089WPA\u3001WPA2\u3001\u305d\u3057\u3066\u6700\u65b0\u306eWPA3\u3078\u3068\u9032\u5316\u3092\u7d9a\u3051\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u3067\u306f\u5404\u898f\u683c\u306e\u7279\u5fb4\u3001\u7279\u306bWPA2\u304c\u62b1\u3048\u3066\u3044\u305f\u8ab2\u984c\u3068\u3001WPA3\u306b\u3088\u308b\u89e3\u6c7a\u7b56\u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n<h3>\u4f7f\u3063\u3066\u306f\u3044\u3051\u306a\u3044\u904e\u53bb\u306e\u898f\u683c\uff1aWEP\u306e\u8106\u5f31\u6027<\/h3>\n<p>WEP (Wired Equivalent Privacy) \u306f\u3001\u7121\u7ddaLAN\u306e\u6700\u521d\u671f\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u898f\u683c\u3067\u3059\u304c\u3001\u6697\u53f7\u9375\u304c\u56fa\u5b9a\u7684\u3067\u3042\u308b\u3053\u3068\u3084\u3001\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u305d\u306e\u3082\u306e\u306b\u6df1\u523b\u306a\u8106\u5f31\u6027\u304c\u767a\u898b\u3055\u308c\u305f\u3053\u3068\u304b\u3089\u3001\u73fe\u5728\u3067\u306f<strong>\u6570\u5206\u301c\u6570\u5341\u5206\u7a0b\u5ea6\u3067\u5bb9\u6613\u306b\u89e3\u8aad\u53ef\u80fd<\/strong>\u3067\u3059\u3002\u8a66\u9a13\u554f\u984c\u3067\u300cWEP\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u305f\u300d\u3068\u3044\u3046\u8a18\u8ff0\u304c\u3042\u308c\u3070\u3001\u305d\u308c\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u91cd\u5927\u306a\u554f\u984c\u70b9\u3092\u793a\u5506\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u3010\u8eab\u8fd1\u306a\u4f8b\u3048\uff1a\u7c21\u5358\u306a\u5357\u4eac\u9320\u3011<\/strong><br \/>\nWEP\u306f\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u30d4\u30c3\u30ad\u30f3\u30b0\u3067\u304d\u3066\u3057\u307e\u3046\u300c\u7c21\u5358\u306a\u5357\u4eac\u9320\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u9375\u3092\u304b\u3051\u3066\u3044\u308b\u3064\u3082\u308a\u3067\u3082\u3001\u5168\u304f\u9632\u72af\u306e\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u305b\u3093\u3002<\/p>\n<h3>\u9577\u5e74\u306e\u6a19\u6e96\u898f\u683c\uff1aWPA2\u3068\u305d\u306e\u8ab2\u984c<\/h3>\n<p>WEP\u306e\u8106\u5f31\u6027\u3092\u53d7\u3051\u3066\u767b\u5834\u3057\u305fWPA\u3092\u7d4c\u3066\u3001\u9577\u3089\u304f\u6a19\u6e96\u898f\u683c\u3068\u3057\u3066\u5229\u7528\u3055\u308c\u3066\u304d\u305f\u306e\u304c<strong>WPA2 (Wi-Fi Protected Access 2)<\/strong>\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6697\u53f7\u5316\u65b9\u5f0f<\/strong>: \u5f37\u529b\u306a\u6697\u53f7\u5316\u65b9\u5f0f\u3067\u3042\u308b<strong>AES (CCMP)<\/strong>\u3092\u63a1\u7528\u3057\u3001WEP\u3068\u306f\u6bd4\u8f03\u306b\u306a\u3089\u306a\u3044\u9ad8\u3044\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3057\u305f\u3002<\/li>\n<li><strong>\u8a8d\u8a3c\u65b9\u5f0f<\/strong>: \u5bb6\u5ead\u5411\u3051\u306e<strong>WPA2-PSK<\/strong>\uff08\u4e8b\u524d\u5171\u6709\u9375\uff09\u3068\u3001\u4f01\u696d\u5411\u3051\u306e<strong>WPA2-EAP<\/strong>\uff08IEEE 802.1X\u8a8d\u8a3c\uff09\u306e2\u3064\u306e\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3057\u304b\u3057\u3001\u5e83\u304f\u666e\u53ca\u3057\u305fWPA2-PSK\u306b\u3082\u8ab2\u984c\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u305d\u308c\u306f\u3001\u901a\u4fe1\u7d4c\u8def\u4e0a\u3067\u76d7\u8074\u3057\u305f\u60c5\u5831\uff084\u30a6\u30a7\u30a4\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\uff09\u3092\u5143\u306b\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u30aa\u30d5\u30e9\u30a4\u30f3\u74b0\u5883\u3067\u6642\u9593\u3092\u304b\u3051\u3066\u89e3\u6790\u3059\u308b\u300c<strong>\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\uff08\u7dcf\u5f53\u305f\u308a\u653b\u6483\uff09<\/strong>\u300d\u3084\u300c<strong>\u8f9e\u66f8\u653b\u6483<\/strong>\u300d\u306b\u5f31\u3044\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u7279\u306b\u7c21\u5358\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u89e3\u8aad\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<h3>\u73fe\u4ee3\u306e\u6a19\u6e96\uff1aWPA3\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316<\/h3>\n<p>WPA3\u306f\u3001WPA2\u304c\u62b1\u3048\u3066\u3044\u305f\u8ab2\u984c\u3092\u89e3\u6c7a\u3057\u3001\u3088\u308a\u5805\u7262\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u767b\u5834\u3057\u305f\u6700\u65b0\u898f\u683c\u3067\u3059\u3002<\/p>\n<h4>\u5f37\u5316\u70b91\uff1a\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\u3078\u306e\u8010\u6027\u5f37\u5316 (SAE)<\/h4>\n<p>WPA3-Personal\u3067\u306f\u3001PSK\u306b\u4ee3\u308f\u308a<strong>SAE (Simultaneous Authentication of Equals)<\/strong>\u3068\u3044\u3046\u65b0\u3057\u3044\u9375\u4ea4\u63db\u65b9\u5f0f\u304c\u63a1\u7528\u3055\u308c\u307e\u3057\u305f\u3002SAE\u306f\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u305d\u306e\u3082\u306e\u3092\u76f4\u63a5\u3084\u308a\u53d6\u308a\u3057\u306a\u3044\u305f\u3081\u3001\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u306e\u8f9e\u66f8\u653b\u6483\u3092\u9632\u304e\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u305f\u3068\u3048\u63a8\u6e2c\u3055\u308c\u3084\u3059\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u3066\u3082\u3001\u5f93\u6765\u3088\u308a\u683c\u6bb5\u306b\u5b89\u5168\u6027\u304c\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002<\/p>\n<h4>\u5f37\u5316\u70b92\uff1a\u516c\u8846\u7121\u7ddaLAN\u306e\u5b89\u5168\u6027\u5411\u4e0a<\/h4>\n<p>\u30ab\u30d5\u30a7\u3084\u7a7a\u6e2f\u306a\u3069\u3067\u63d0\u4f9b\u3055\u308c\u308b\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3057\u306e\u516c\u8846\u7121\u7ddaLAN\u3067\u306f\u3001\u901a\u4fe1\u304c\u6697\u53f7\u5316\u3055\u308c\u305a\u3001\u540c\u3058\u30a2\u30af\u30bb\u30b9\u30dd\u30a4\u30f3\u30c8\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u4ed6\u306e\u5229\u7528\u8005\u304b\u3089\u901a\u4fe1\u5185\u5bb9\u3092\u76d7\u307f\u898b\u3089\u308c\u308b\u5371\u967a\u304c\u3042\u308a\u307e\u3057\u305f\u3002WPA3\u306f\u3053\u308c\u3092\u6539\u5584\u3059\u308b\u305f\u3081\u3001<strong>Wi-Fi Enhanced Open&#x2122; (OWE)<\/strong>\u3092\u5c0e\u5165\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3057\u3067\u3082\u5229\u7528\u8005\u3054\u3068\u306b\u901a\u4fe1\u3092\u500b\u5225\u306b\u6697\u53f7\u5316\u3057\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u9805\u76ee<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">WEP<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">WPA2<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">WPA3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4e3b\u306a\u6697\u53f7\u5316\u65b9\u5f0f<\/strong><\/td>\n<td style=\"padding: 8px;\">RC4 (\u8106\u5f31)<\/td>\n<td style=\"padding: 8px;\"><strong>AES (CCMP)<\/strong><\/td>\n<td style=\"padding: 8px;\"><strong>AES (CCMP)<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4e3b\u306a\u8a8d\u8a3c (Personal)<\/strong><\/td>\n<td style=\"padding: 8px;\">\u4e8b\u524d\u5171\u6709\u9375<\/td>\n<td style=\"padding: 8px;\">PSK<\/td>\n<td style=\"padding: 8px;\"><strong>SAE<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u4e3b\u306a\u8ab2\u984c<\/strong><\/td>\n<td style=\"padding: 8px;\">\u6697\u53f7\u81ea\u4f53\u304c\u8106\u5f31\u3067\u5bb9\u6613\u306b\u89e3\u8aad\u53ef\u80fd<\/td>\n<td style=\"padding: 8px;\">\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u306e\u8f9e\u66f8\u653b\u6483\u306b\u5f31\u3044<\/td>\n<td style=\"padding: 8px;\">\u65e2\u5b58\u6a5f\u5668\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>\u73fe\u5728\u306e\u63a8\u5968\u5ea6<\/strong><\/td>\n<td style=\"padding: 8px;\"><strong>\u4f7f\u7528\u7981\u6b62<\/strong><\/td>\n<td style=\"padding: 8px;\"><strong>\u975e\u63a8\u5968<\/strong>\uff08WPA3\u304c\u4f7f\u3048\u306a\u3044\u5834\u5408\u306e\u307f\uff09<\/td>\n<td style=\"padding: 8px;\"><strong>\u5f37\u304f\u63a8\u5968<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<h2>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\u306e\u4e09\u4f4d\u4e00\u4f53\u2502SPF\u30fbDKIM\u30fbDMARC\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u3084\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u306a\u3069\u3001\u591a\u304f\u306e\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u8d77\u70b9\u3068\u306a\u308b\u306e\u304c\u300c\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u300d\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306e\u57fa\u672c\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308bSMTP\u306f\u3001\u9001\u4fe1\u8005\u306e\u30a2\u30c9\u30ec\u30b9\uff08From\u30a2\u30c9\u30ec\u30b9\uff09\u3092\u81ea\u7531\u306b\u8a2d\u5b9a\u3067\u304d\u308b\u305f\u3081\u3001\u60aa\u610f\u306e\u3042\u308b\u7b2c\u4e09\u8005\u304c\u5bb9\u6613\u306b\u306a\u308a\u3059\u307e\u3057\u3092\u884c\u3048\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306b\u5bfe\u6297\u3059\u308b\u305f\u3081\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3042\u308b<strong>SPF<\/strong>\u3001<strong>DKIM<\/strong>\u3001\u305d\u3057\u3066<strong>DMARC<\/strong>\u304c\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p><strong>\u3010\u8eab\u8fd1\u306a\u4f8b\u3048\uff1a\u624b\u7d19\u306e\u672c\u4eba\u78ba\u8a8d\u3011<\/strong><br \/>\n\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u3001\u624b\u7d19\u306e\u3084\u308a\u53d6\u308a\u306b\u4f8b\u3048\u308b\u3068\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>SMTP<\/strong>\uff1a\u5dee\u51fa\u4eba\u306e\u4f4f\u6240\u6c0f\u540d\u3092\u8ab0\u3067\u3082\u81ea\u7531\u306b\u66f8\u3051\u308b\u300c\u30cf\u30ac\u30ad\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3002<\/li>\n<li><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\uff1a\u305d\u306e\u30cf\u30ac\u30ad\u304c\u672c\u5f53\u306b\u672c\u4eba\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u300c\u672c\u4eba\u78ba\u8a8d\u306e\u4ed5\u7d44\u307f\u300d\u3067\u3059\u3002<\/li>\n<\/ul>\n<h3>\u524d\u63d0\u77e5\u8b58\uff1a\u901a\u4fe1\u7d4c\u8def\u306e\u6697\u53f7\u5316 (STARTTLS)<\/h3>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u5b66\u3076\u524d\u306b\u3001\u30e1\u30fc\u30eb\u306e\u300c\u76d7\u8074\u300d\u5bfe\u7b56\u306b\u89e6\u308c\u3066\u304a\u304d\u307e\u3059\u3002\u6a19\u6e96\u306eSMTP\u306f\u901a\u4fe1\u304c\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001<strong>STARTTLS<\/strong>\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u9593\u306e\u901a\u4fe1\u3092TLS\u3067\u6697\u53f7\u5316\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u914d\u9001\u4e2d\u306e\u30e1\u30fc\u30eb\u304c\u76d7\u307f\u898b\u3089\u308c\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u3042\u304f\u307e\u3067\u300c\u914d\u9001\u7d4c\u8def\u306e\u5b89\u5168\u78ba\u4fdd\u300d\u3067\u3042\u308a\u3001\u300c\u5dee\u51fa\u4eba\u304c\u672c\u7269\u304b\u300d\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>SPF (Sender Policy Framework) \uff1a\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c<\/h3>\n<p>SPF\u306f\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u8005\u306f\u3001\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u30b5\u30fc\u30d0\u306e<strong>IP\u30a2\u30c9\u30ec\u30b9\u306e\u4e00\u89a7<\/strong>\u3092\u3001DNS\u306e<strong>SPF\u30ec\u30b3\u30fc\u30c9<\/strong>\u306b\u516c\u958b\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u53d7\u4fe1\u5074\u306e\u52d5\u304d<\/strong>\uff1a\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u305f\u30b5\u30fc\u30d0\u306f\u3001\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u7167\u5408\u3057\u307e\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u304cSPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308c\u3070\u300c\u6b63\u898f\u306e\u30b5\u30fc\u30d0\u304b\u3089\u306e\u9001\u4fe1\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1aSPF\u306f\u300c<strong>\u624b\u7d19\u306e\u6d88\u5370<\/strong>\u300d\u3092\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u300cA\u793e\uff08\u30c9\u30e1\u30a4\u30f3\uff09\u304b\u3089\u306e\u624b\u7d19\u300d\u3068\u66f8\u3044\u3066\u3042\u308b\u306e\u306b\u3001A\u793e\u306e\u6240\u5728\u5730\u3068\u306f\u5168\u304f\u95a2\u4fc2\u306a\u3044\u5834\u6240\u306e\u6d88\u5370\u304c\u62bc\u3055\u308c\u3066\u3044\u305f\u3089\u602a\u3057\u3044\u3067\u3059\u3088\u306d\u3002SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001A\u793e\u304c\u5229\u7528\u3092\u8a31\u53ef\u3057\u3066\u3044\u308b\u300c\u6b63\u898f\u306e\u90f5\u4fbf\u5c40\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u306e\u30ea\u30b9\u30c8\u300d\u306b\u3042\u305f\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>DKIM (DomainKeys Identified Mail) \uff1a\u96fb\u5b50\u7f72\u540d\u306b\u3088\u308b\u6539\u3056\u3093\u691c\u77e5<\/h3>\n<p>DKIM\u306f\u3001\u30e1\u30fc\u30eb\u306b<strong>\u96fb\u5b50\u7f72\u540d<\/strong>\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u3067\u3001\u9001\u4fe1\u5143\u304c\u6b63\u5f53\u3067\u3042\u308b\u3053\u3068\u3068\u3001\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c\u9014\u4e2d\u3067\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5074\u306e\u52d5\u304d<\/strong>\uff1a\u9001\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306f\u3001\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u3084\u672c\u6587\u304b\u3089\u751f\u6210\u3057\u305f\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u79d8\u5bc6\u9375\u3067\u6697\u53f7\u5316\u3057\u3001\u96fb\u5b50\u7f72\u540d\u3068\u3057\u3066\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306b\u4ed8\u4e0e\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u53d7\u4fe1\u5074\u306e\u52d5\u304d<\/strong>\uff1a\u53d7\u4fe1\u30b5\u30fc\u30d0\u306f\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u96fb\u5b50\u7f72\u540d\u3092\u5fa9\u53f7\u3057\u3001\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3068\u4e00\u81f4\u3059\u308b\u304b\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1aDKIM\u306f\u300c<strong>\u5c01\u7b52\u306b\u62bc\u3055\u308c\u305f\u874b\u5c01\uff08\u308d\u3046\u3075\u3046\uff09<\/strong>\u300d\u3067\u3059\u3002A\u793e\u72ec\u81ea\u306e\u5370\u9451\u3067\u5c01\u3092\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u305d\u308c\u304c\u300c\u78ba\u304b\u306bA\u793e\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u3067\u3042\u308a\u3001\u9014\u4e2d\u3067\u958b\u5c01\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3053\u3068\u306e\u8a3c\u660e\u306b\u306a\u308a\u307e\u3059\u3002DNS\u306b\u516c\u958b\u3055\u308c\u305f\u516c\u958b\u9375\u306f\u3001\u305d\u306e\u5370\u9451\u304c\u672c\u7269\u304b\u3069\u3046\u304b\u3092\u7167\u5408\u3059\u308b\u305f\u3081\u306e\u300c\u5370\u9451\u767b\u9332\u8a3c\u660e\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/li>\n<\/ul>\n<h3>DMARC (Domain-based Message Authentication, Reporting, and Conformance) \uff1a\u8a8d\u8a3c\u5931\u6557\u6642\u306e\u30dd\u30ea\u30b7\u30fc\u6307\u793a<\/h3>\n<p>DMARC\u306f\u3001SPF\u3068DKIM\u306e\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u3001\u53d7\u4fe1\u5074\u304c\u305d\u306e\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u3079\u304d\u304b\u3092<strong>\u30dd\u30ea\u30b7\u30fc\u3068\u3057\u3066\u6307\u793a<\/strong>\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002\u307e\u305f\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u72b6\u6cc1\u3092\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u8005\u306b\u30ec\u30dd\u30fc\u30c8\u3059\u308b\u6a5f\u80fd\u3082\u6301\u3061\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>DMARC\u306e\u5f79\u5272<\/strong>\uff1a\n<ol>\n<li>SPF\u307e\u305f\u306fDKIM\u306e\u3069\u3061\u3089\u304b\u3001\u3042\u308b\u3044\u306f\u4e21\u65b9\u306e\u8a8d\u8a3c\u306b\u5408\u683c\u3057\u305f\u30e1\u30fc\u30eb\u306e\u307f\u3092\u6b63\u5f53\u3068\u307f\u306a\u3059\u3002<\/li>\n<li>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u30dd\u30ea\u30b7\u30fc\uff08<code>p<\/code>\u30bf\u30b0\uff09\u3067\u6307\u5b9a\u3059\u308b\u3002\n<ul>\n<li><code>p=none<\/code>\uff1a\u4f55\u3082\u3057\u306a\u3044\uff08\u76e3\u8996\u30fb\u30ec\u30dd\u30fc\u30c8\u306e\u307f\uff09<\/li>\n<li><code>p=quarantine<\/code>\uff1a\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308c\u308b<\/li>\n<li><code>p=reject<\/code>\uff1a\u53d7\u4fe1\u3092\u62d2\u5426\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n<li>\u8a8d\u8a3c\u7d50\u679c\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u305f\u3081\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3002<\/li>\n<\/ol>\n<\/li>\n<li><strong>\u8eab\u8fd1\u306a\u4f8b\u3048<\/strong>\uff1aDMARC\u306f\u3001A\u793e\u304c\u90f5\u4fbf\u5c40\u306b\u5bfe\u3057\u3066\u51fa\u3059\u300c<strong>\u6307\u793a\u66f8<\/strong>\u300d\u3067\u3059\u3002\u300c\u3046\u3061\u304b\u3089\u306e\u624b\u7d19\u3067\u3001\u6d88\u5370\uff08SPF\uff09\u304c\u304a\u304b\u3057\u3044\u304b\u3001\u874b\u5c01\uff08DKIM\uff09\u304c\u507d\u7269\u3060\u3063\u305f\u5834\u5408\u306f\u3001\u76f8\u624b\u306b\u6e21\u3055\u305a\u7834\u68c4\u3057\u3066\u304f\u3060\u3055\u3044\uff08reject\uff09\u3002\u305d\u3057\u3066\u3001\u3069\u3093\u306a\u507d\u624b\u7d19\u304c\u5c4a\u3044\u305f\u304b\u5b9a\u671f\u7684\u306b\u5831\u544a\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u4f9d\u983c\u3059\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/li>\n<\/ul>\n<table border=\"1\" style=\"width:100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u6280\u8853<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u691c\u8a3c\u65b9\u6cd5<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u4e3b\u306a\u76ee\u7684<\/th>\n<th style=\"padding: 8px; background-color: #f2f2f2;\">\u4f8b\u3048<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>SPF<\/strong><\/td>\n<td style=\"padding: 8px;\">\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9<\/td>\n<td style=\"padding: 8px;\">\u9001\u4fe1\u30b5\u30fc\u30d0\u306e\u6b63\u5f53\u6027\u691c\u8a3c<\/td>\n<td style=\"padding: 8px;\">\u6d88\u5370\u306e\u78ba\u8a8d<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>DKIM<\/strong><\/td>\n<td style=\"padding: 8px;\">\u96fb\u5b50\u7f72\u540d<\/td>\n<td style=\"padding: 8px;\">\u9001\u4fe1\u5143\u306e\u6b63\u5f53\u6027\uff0b\u6539\u3056\u3093\u691c\u77e5<\/td>\n<td style=\"padding: 8px;\">\u874b\u5c01\u306e\u78ba\u8a8d<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>DMARC<\/strong><\/td>\n<td style=\"padding: 8px;\">SPF\u3068DKIM\u306e\u7d50\u679c<\/td>\n<td style=\"padding: 8px;\">\u8a8d\u8a3c\u5931\u6557\u6642\u306e\u30dd\u30ea\u30b7\u30fc\u6307\u793a<\/td>\n<td style=\"padding: 8px;\">\u90f5\u4fbf\u5c40\u3078\u306e\u6307\u793a\u66f8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>\u60c5\u5831\u51e6\u7406\u5b89\u5168\u78ba\u4fdd\u652f\u63f4\u58eb\u8a66\u9a13\u306e\u5408\u683c\u3092\u76ee\u6307\u3059\u4e0a\u3067\u3001\u591a\u304f\u306e\u53d7\u9a13\u8005\u304c\u58c1\u3068\u611f\u3058\u308b\u306e\u304c\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u901a\u4fe1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u300d\u5206\u91ce\u3067\u3059\u3002DNS\u3001TLS\u3001VPN\u3001\u7121\u7ddaLAN\u3001\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u2026\u3002\u4e00\u3064\u3072\u3068\u3064\u306e\u6280\u8853\u306f\u7406\u89e3 &#8230; 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