{"id":18400,"date":"2026-04-03T16:32:31","date_gmt":"2026-04-03T07:32:31","guid":{"rendered":"https:\/\/www.secuavail.com\/kb\/?p=18400"},"modified":"2026-04-06T13:09:10","modified_gmt":"2026-04-06T04:09:10","slug":"hsts","status":"publish","type":"post","link":"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/","title":{"rendered":"HSTS\u306e\u6982\u8981\u3068\u6ce8\u610f\u70b9\u306b\u3064\u3044\u3066"},"content":{"rendered":"<p>&nbsp;<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#HSTS%E3%81%AE%E6%A6%82%E8%A6%81\" >HSTS\u306e\u6982\u8981<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#%E5%88%A9%E7%94%A8%E6%99%82%E3%81%AB%E6%B0%97%E3%82%92%E4%BB%98%E3%81%91%E3%82%8B%E3%81%93%E3%81%A8\" >\u5229\u7528\u6642\u306b\u6c17\u3092\u4ed8\u3051\u308b\u3053\u3068<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#%E5%89%8D%E6%8F%90%E9%83%A8%E5%88%86%E3%81%A7%E3%81%AE%E6%B0%97%E3%82%92%E4%BB%98%E3%81%91%E3%82%8B%E4%BA%8B%E9%A0%85\" >\u524d\u63d0\u90e8\u5206\u3067\u306e\u6c17\u3092\u4ed8\u3051\u308b\u4e8b\u9805<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#max-age%E3%80%80%EF%BC%88%E5%BF%85%E9%A0%88%EF%BC%89\" >max-age\u3000\uff08\u5fc5\u9808\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#includeSubDomains_%EF%BC%88%E3%82%AA%E3%83%97%E3%82%B7%E3%83%A7%E3%83%B3%EF%BC%89\" >includeSubDomains \uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#preload_%E3%82%AA%E3%83%97%E3%82%B7%E3%83%A7%E3%83%B3\" >preload (\u30aa\u30d7\u30b7\u30e7\u30f3)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.secuavail.com\/kb\/tech-blog\/hsts\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"HSTS%E3%81%AE%E6%A6%82%E8%A6%81\"><\/span>HSTS\u306e\u6982\u8981<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>HSTS(HTTP Strict Transport Security)\u3092\u5229\u7528\u3059\u308b\u76ee\u7684\u306f\u3001\u300cHTTPS\u3067\u306e\u901a\u4fe1\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08\u30d6\u30e9\u30a6\u30b6\u3001\u30e6\u30fc\u30b6\uff09\u306b\u5f37\u5236\u3055\u305b\u308b\u3053\u3068\u300d\u3068\u3001\u300c\u8a3c\u660e\u66f8\u306e\u8a8d\u8a3c\u306b\u95a2\u3059\u308b\u30a8\u30e9\u30fc\u3092\u30e6\u30fc\u30b6\u306b\u7121\u8996\u30fb\u56de\u907f\u3055\u305b\u306a\u3044\u3053\u3068\u300d\u3067\u3059\u3002<br \/>\n\u60aa\u610f\u3042\u308b\u4eba\u9593\u304c\u516c\u8846Wi-Fi\u3092\u6301\u3061\u8fbc\u3093\u3067\u3001DNS\u3084ARP\u3092\u3044\u3058\u3089\u308c\u3066\u3082\u3001HTTP\u901a\u4fe1\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u305b\u3089\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3001\u88ab\u5bb3\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n<p>HSTS\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\uff1a<\/p>\n<p><a href=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/04\/c478b1a6dedb96603a486610161ab963.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18459 size-full\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/04\/c478b1a6dedb96603a486610161ab963.png\" alt=\"\" width=\"1143\" height=\"530\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/04\/c478b1a6dedb96603a486610161ab963.png 1143w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/04\/c478b1a6dedb96603a486610161ab963-300x139.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/04\/c478b1a6dedb96603a486610161ab963-768x356.png 768w\" sizes=\"auto, (max-width: 1143px) 100vw, 1143px\" \/><\/a><\/p>\n<p>HSTS\u306e\u8a2d\u5b9a\u81ea\u4f53\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3001<span data-teams=\"true\">\u9069\u5207\u306a\u8a2d\u5b9a\u3092\u884c\u3063\u305f\u300cStrict-Transport-Security\u300d\u3092\u3001\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9\u304b\u3089\u5fdc\u7b54\u3055\u305b\u308b\u3060\u3051<\/span>\u3067\u3059\u3002<\/p>\n<p>\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u4f8b\uff1a Strict-Transport-Security: max-age=31536000; includeSubDomains<\/p>\n<p>\u203b\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9\u3068\u8a18\u8f09\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u30b5\u30fc\u30d0\u304c\u5fdc\u7b54\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3057\u3001<br \/>\n\u30b5\u30fc\u30d0\u306e\u624b\u524d\u306b\u3042\u308b\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\uff08LB\u306a\u3069\uff09\u304c\u5fdc\u7b54\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>HSTS\u3067\u3084\u3084\u3053\u3057\u3044\u30dd\u30a4\u30f3\u30c8\u306f\u3001[ preload ] \u3067\u3059\u3002<br \/>\n\u672c\u9805\u306e\u5192\u982d\u306e\u52d5\u4f5c\u306f\u57fa\u672c\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u3057\u3066\u3001\u6307\u5b9a\u3055\u308c\u305f\u671f\u9593\u4e2d\u3001HSTS\u306e\u52d5\u4f5c\u3092\u3057\u307e\u3059\u3002<br \/>\n\u305f\u3060\u305d\u308c\u3067\u306f\u3001HSTS\u30d8\u30c3\u30c0\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u306a\u3044\uff08HSTS\u306e\u52d5\u4f5c\u3092\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\uff09\u72b6\u614b\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u4fdd\u8b77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u3053\u3067 [ preload ] \u3092\u5229\u7528\u3057\u307e\u3059\u3002<br \/>\n[ preload ] \u3092\u5229\u7528\u3059\u308b\u306b\u306fGoogle\u306eHSTS\u4e8b\u524d\u8aad\u307f\u8fbc\u307f\u30b5\u30fc\u30d3\u30b9\u306b\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001<br \/>\n\u521d\u56de\u30a2\u30af\u30bb\u30b9\u304b\u3089HSTS\u306b\u3088\u308b\u4fdd\u8b77\u304c\u884c\u3048\u307e\u3059\u3002<\/p>\n<p>preload\u3092\u5229\u7528\u3057\u306a\u3044\u5834\u5408\u306b\u306f\u3001HTTP\u3067\u30a2\u30af\u30bb\u30b9\u3055\u308c\u305f\u3068\u304d\u306b\u3001HTTPS\u3078\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u305b\u308b\u8a2d\u5b9a\u3092<br \/>\n\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u5148\u8ff0\u306e\u901a\u308a\u3001\u3053\u306e\u6642\u306b\u30d6\u30e9\u30a6\u30b6\u3068\u3057\u3066\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\uff09<\/p>\n<p>preload\u672a\u4f7f\u7528\u6642\u306e\u4e2d\u9593\u8005\u653b\u6483\u30ea\u30b9\u30af\uff1a<\/p>\n<p><a href=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18404\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS2.png\" alt=\"\" width=\"994\" height=\"735\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS2.png 994w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS2-300x222.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS2-768x568.png 768w\" sizes=\"auto, (max-width: 994px) 100vw, 994px\" \/><\/a><\/p>\n<p>preload\u4f7f\u7528\u6642\u306b\u306f\u30ea\u30b9\u30af\u4f4e\u6e1b\u3055\u308c\u308b\uff1a<\/p>\n<p><a href=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18405\" src=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS3.png\" alt=\"\" width=\"1038\" height=\"706\" srcset=\"https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS3.png 1038w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS3-300x204.png 300w, https:\/\/www.secuavail.com\/kb\/wp-content\/uploads\/2026\/01\/HSTS3-768x522.png 768w\" sizes=\"auto, (max-width: 1038px) 100vw, 1038px\" \/><\/a><\/p>\n<p>\u8aad\u3093\u3067\u3044\u308b\u3068\u3001 [ preload ] \u3092\u8a2d\u5b9a\u3059\u308b\u3079\u304d\u3058\u3083\u306a\u3044\u304b\u3001\u3068\u898b\u3048\u307e\u3059\u304c\u3001\u5b9f\u969b\u306f\u305d\u3046\u3044\u3046\u308f\u3051\u3067\u3082\u306a\u304f\u3001<br \/>\nGoogle\u3082\u53d7\u3051\u3089\u308c\u308b\u30e1\u30ea\u30c3\u30c8\u3082\u3054\u304f\u308f\u305a\u304b\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u6700\u8fd1\u306e\u30d6\u30e9\u30a6\u30b6\u306fHTTP\u30a2\u30af\u30bb\u30b9\u3092\u81ea\u52d5\u7684\u306bHTTPS\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u8a66\u307f\u308b\u305f\u3081\u3001<br \/>\n\u300cHTTP\u3092\u660e\u8a18\u3057\u305fURL\u300d\u306b\u300c\u653b\u6483\u8005\u304c\u8a50\u79f0\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u3046\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u300d\u3067\u30a2\u30af\u30bb\u30b9\u3057\u306a\u3044\u3068\u5b9f\u5bb3\u306f\u306a\u3044\u306e\u3067\u3001preload\u306e\u8a2d\u5b9a\u3092\u8aa4\u308b\u30ea\u30b9\u30af\u306e\u307b\u3046\u304c\u9ad8\u3044\u3068\u8003\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%88%A9%E7%94%A8%E6%99%82%E3%81%AB%E6%B0%97%E3%82%92%E4%BB%98%E3%81%91%E3%82%8B%E3%81%93%E3%81%A8\"><\/span>\u5229\u7528\u6642\u306b\u6c17\u3092\u4ed8\u3051\u308b\u3053\u3068<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u307e\u305a\u3001HSTS\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u96e3\u3057\u3044\u3068\u8a8d\u8b58\u3057\u3066\u304a\u304f\u3068\u3088\u3044\u3067\u3059\u3002<br \/>\n\u5207\u308a\u623b\u3057\u304c\u96e3\u3057\u3044\u306e\u3067\u3001\u5f90\u3005\u306b\u8a2d\u5b9a\u3092\u56fa\u3081\u3066\u3044\u304f\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3092\u6301\u3063\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%89%8D%E6%8F%90%E9%83%A8%E5%88%86%E3%81%A7%E3%81%AE%E6%B0%97%E3%82%92%E4%BB%98%E3%81%91%E3%82%8B%E4%BA%8B%E9%A0%85\"><\/span>\u524d\u63d0\u90e8\u5206\u3067\u306e\u6c17\u3092\u4ed8\u3051\u308b\u4e8b\u9805<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30fbHTTPS\u306e\u307f\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u5165\u308c\u3089\u308c\u308b\u72b6\u614b\u304b\u78ba\u8a8d\u3057\u307e\u3059<\/p>\n<p>\u30ec\u30ac\u30b7\u30fc\u306a\u30b7\u30b9\u30c6\u30e0\u3060\u3068HTTP\u3067\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u5165\u308c\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u305d\u306e\u5834\u5408\u306b\u306fHSTS\u4ee5\u524d\u306e\u554f\u984c\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001<strong>\u5148\u306bHTTP\u3067\u306e\u30a2\u30af\u30bb\u30b9\u3092HTTPS\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u305b\u308b\u8a2d\u5b9a\u3092\u5165\u308c\u3066HTTPS\u306e\u307f\u3067\u306e\u30a2\u30af\u30bb\u30b9\u3092\u884c\u308f\u305b\u308b\u304b\u3001\u74b0\u5883\u306b\u3088\u3063\u3066\u306f\u8a2d\u5b9a\u3092\u3042\u304d\u3089\u3081\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/strong><\/p>\n<p><strong>\u30fb<\/strong>\u3069\u3053\u3067HSTS\u7528\u30d8\u30c3\u30c0\u3092\u633f\u5165\u3059\u308b\u306e\u304b\u8003\u3048\u307e\u3059<\/p>\n<p>\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\uff08CDN\u3001LB\uff09\u3067\u6709\u52b9\u5316\u3059\u308b\u65b9\u6cd5\u3068\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u30b5\u30fc\u30d0\u3067\u6709\u52b9\u5316\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u3053\u308c\u306f\u5b8c\u5168\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u6b21\u7b2c\u3067\u3059\u3002<br \/>\nincludeSubDomains\u3092\u6709\u52b9\u5316\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u5168\u3066\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u3082HSTS\u3092\u5fdc\u7b54\u3059\u308b\u306e\u304c\u671b\u307e\u308c\u308b\u305f\u3081\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u30b5\u30fc\u30d0\u3067\u5fdc\u7b54\u3057\u305f\u307b\u3046\u304c\u7ba1\u7406\u3057\u3084\u3059\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u3067\u3059\u3057\u3001<br \/>\n\u307e\u3068\u3081\u3066LB\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u3051\u3066\u3044\u308b\u306a\u3089\u3070\u3001LB\u3067\u633f\u5165\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<br \/>\n\u500b\u4eba\u7684\u306a\u611f\u899a\u3068\u3057\u3066\u306f\u3001\u30a4\u30f3\u30d5\u30e9\u7cfb\u306eHTTP\u30d8\u30c3\u30c0\u64cd\u4f5c\u306f\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3067\u3084\u308b\u306e\u304c\u81ea\u7136\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u74b0\u5883\u306b\u3088\u3063\u3066\u5dee\u306f\u3042\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3054\u3068\u306b\u8003\u616e\u30dd\u30a4\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"max-age%E3%80%80%EF%BC%88%E5%BF%85%E9%A0%88%EF%BC%89\"><\/span>max-age\u3000\uff08\u5fc5\u9808\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30d6\u30e9\u30a6\u30b6\u304cHTTPS\u5f37\u5236\u3092\u8a18\u61b6\u3059\u308b\u671f\u9593\uff08\u79d2\uff09\u3067\u3059\u3002<br \/>\n\u6700\u7d42\u7684\u306b\u306f1\u5e74\u306b\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u306b\u3059\u308b\u3068\u3088\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\nmax-age\u306e\u6709\u52b9\u671f\u9593\u4e2d\u3067\u3082\u3001HTTPS\u901a\u4fe1\u304c\u6210\u7acb\u3057\u3066\u3044\u308c\u3070\u65b0\u3057\u3044HSTS\u30d8\u30c3\u30c0\u306b\u3088\u3063\u3066\u8a2d\u5b9a\u5909\u66f4\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001HTTPS\u901a\u4fe1\u81ea\u4f53\u304c\u3067\u304d\u306a\u304f\u306a\u308b\u3068\u4fee\u6b63\u4e0d\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u8a2d\u5b9a\u30df\u30b9\u304c\u3042\u3063\u305f\u5834\u5408\u306b\u5099\u3048\u3066\u3001\u6700\u521d\u306f\u5206\u3001\u6570\u6642\u9593\u3001\u6570\u65e5\u306b\u3057\u3066\u3001\u554f\u984c\u304c\u8d77\u304d\u306a\u3051\u308c\u3070\u534a\u5e74\u30011\u5e74\u3068\u4f38\u3070\u3057\u3066\u3044\u304f\u3088\u3046\u306b\u3057\u3066\u3044\u3063\u305f\u307b\u3046\u304c\u826f\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u672c\u756a\u74b0\u5883\u3068\u958b\u767a\u74b0\u5883\u3067\u30c9\u30e1\u30a4\u30f3\u304c\u7570\u306a\u308b\u3053\u3068\u3082\u3042\u308b\u306e\u3067\u3001\u958b\u767a\u74b0\u5883\u306e\u8a2d\u5b9a\u304c\u554f\u984c\u306a\u304f\u3068\u3082\u3001\u672c\u756a\u74b0\u5883\u306e\u8a2d\u5b9a\u6642\u306b\u30df\u30b9\u304c\u3042\u308b\u3053\u3068\u3082\u8003\u3048\u3089\u308c\u308b\u305f\u3081\u3001\u3069\u3061\u3089\u3067\u3082\u5f90\u3005\u306b\u4f38\u3070\u3057\u3066\u3044\u304f\u3068\u3044\u3046\u5bfe\u5fdc\u306f\u5fc5\u8981\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u5f8c\u8ff0\u3057\u3066\u3044\u307e\u3059\u304c\u3001preload\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306b\u306f\u30011\u5e74\u4ee5\u4e0a\u306emax-age\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/strong><\/p>\n<h3><span class=\"ez-toc-section\" id=\"includeSubDomains_%EF%BC%88%E3%82%AA%E3%83%97%E3%82%B7%E3%83%A7%E3%83%B3%EF%BC%89\"><\/span>includeSubDomains \uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8a2d\u5b9a\u3059\u308b\u3068\u3001HSTS\u30dd\u30ea\u30b7\u30fc\u3092\u5168\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u9069\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u57fa\u672c\u7684\u306b\u306f\u6709\u52b9\u5316\u3059\u308b\u3053\u3068\u3092\u524d\u63d0\u306b\u8003\u3048\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n\u5f8c\u8ff0\u3057\u3066\u3044\u307e\u3059\u304c\u3001preload\u306e\u8a2d\u5b9a\u3092\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u5fc5\u305a\u8a2d\u5b9a\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<br \/>\n\u5168\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u3042\u308b\u305f\u3081\u3001[ example.com ] \u3067\u9069\u7528\u3057\u305f\u3089\u3001[ secure.example.com ]<br \/>\n[ api.secure.example.com ] [ another.example.com ] \u306b\u304a\u3044\u3066\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u30011\u3064\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u7528\u9014\u3054\u3068\u306b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u3051\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\nincludeSubDomains\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u7121\u5236\u9650\u306e\u968e\u5c64\u306b\u5bfe\u3057\u3066HSTS\u304c\u304b\u304b\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3001<br \/>\n\u30c6\u30b9\u30c8\/\u958b\u767a\u74b0\u5883\u7528\u3001\u672c\u756a\u7528\uff08API\u7528\u3001\u9759\u7684\u30b3\u30f3\u30c6\u30f3\u30c4\u7528\u7b49\uff09\u3001\u5c06\u6765\u8ffd\u52a0\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u3001\u305d\u308c\u305e\u308c\u3082<br \/>\n\u7ba1\u7406\u3057\u3066\u3044\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u8aa4\u5b57\u306b\u3088\u3063\u3066\u306f\u3001HSTS\u306b\u639b\u3051\u305f\u3044\u5bfe\u8c61\u304c\u3001\u540c\u4e00\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u5224\u5b9a\u3055\u308c\u306a\u3044\u3053\u3068\u3082\u8d77\u3053\u308a\u5f97\u307e\u3059\u306e\u3067\u3001<br \/>\n\u6c17\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002\uff08\u9006\u3082\u307e\u305f\u3057\u304b\u308a\u3067\u3059\u304c\u2026\uff09<\/p>\n<h3><span class=\"ez-toc-section\" id=\"preload_%E3%82%AA%E3%83%97%E3%82%B7%E3%83%A7%E3%83%B3\"><\/span>preload (\u30aa\u30d7\u30b7\u30e7\u30f3)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>HSTS\u306e\u4e8b\u524d\u8aad\u307f\u8fbc\u307f\uff08\u30d7\u30ea\u30ed\u30fc\u30c9\uff09\u3092\u884c\u3046\u305f\u3081\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u304c\u3001<br \/>\nRFC\u3068\u3057\u3066\u8a18\u8f09\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u5229\u7528\u3059\u308b\u306b\u306f\u3001Google\u306e\u30b5\u30fc\u30d3\u30b9\uff08<a href=\"https:\/\/hstspreload.org\/\">https:\/\/hstspreload.org\/<\/a>\uff09\u306b\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001<br \/>\n\u4e00\u90e8\u6709\u5fd7\u306b\u3088\u308b\u53d6\u308a\u7d44\u307f\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>preload\u3092\u8a2d\u5b9a\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u306f\u3001max-age\u3092\u4e00\u5e74\u4ee5\u4e0a\u306b\u3057\u3066\u3001includeSubDomains\u3092\u6709\u52b9\u5316\u306b\u3057\u3066\u554f\u984c\u304c\u306a\u304f\u306a\u3063\u305f\u6642\u70b9\u3067\u3001preload\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u30c9\u30e1\u30a4\u30f3\u3092\u767b\u9332\u3059\u308b\u3088\u3046\u306a\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\uff08\u5148\u306b\u3082\u66f8\u3044\u3066\u3044\u307e\u3059\u304c\u3001HTTP\u2192HTTPS\u3078\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u8a2d\u5b9a\u3082\u767b\u9332\u8981\u4ef6\u3068\u3057\u3066\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\uff09<\/p>\n<p>preload\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30fc\u30d0\u9593\u306e\u901a\u4fe1\u306b\u3088\u308b\u52d5\u4f5c\u6307\u5b9a\u3067\u306f\u306a\u304f\u3001\u3082\u3063\u3068\u5927\u304d\u306a\u4ed5\u7d44\u307f\u306b\u3088\u308b\u30d6\u30e9\u30a6\u30b6\u3078\u306e\u76f4\u63a5\u7684\u306a\u547d\u4ee4\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n<span style=\"font-size: 14px;\">\u3088\u304f\u8003\u3048\u305a\u306bpreload\u3092\u8a2d\u5b9a\u3057\u305f\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c8\u30e9\u30d6\u30eb\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002<\/span><\/p>\n<p><em>\u201d<\/em><em>\u4e00\u90e8\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304cHTTPS\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u6c17\u3065\u304b\u305a\u3001\u30d7\u30ea\u30ed\u30fc\u30c9\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3057\u307e\u3063\u305f\u3068\u3044\u3046\u30b5\u30a4\u30c8\u904b\u55b6\u8005\u304b\u3089\u3001\u5b9a\u671f\u7684\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304d\u307e\u3059\u3002<br \/>\n\u3053\u3046\u3057\u305f\u30b5\u30a4\u30c8\u3067\u306f\u3001\u524a\u9664\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u3001\u624b\u9593\u304c\u304b\u304b\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002\u201d<\/em><\/p>\n<p>Chrome\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306b\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3055\u308c\u308b\u305f\u3081\u3001\u5b89\u5b9a\u7248\u3078\u306e\u53cd\u6620\u306b\u3082\u6642\u9593\u304c\u304b\u304b\u308b\u3046\u3048\u3001<br \/>\n\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u306e\u524a\u9664\u5bfe\u5fdc\u3082\u6b63\u3057\u304f\u884c\u308f\u308c\u308b\u4fdd\u8a3c\u3082\u306a\u3044\u3068\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u9577\u671f\u7684\u306bHSTS\u3092\u30b5\u30dd\u30fc\u30c8\u3067\u304d\u306a\u3044\u306a\u3089\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u3057\u306a\u3044\u307b\u3046\u304c\u826f\u3044\u3068Google\u304b\u3089\u3082\u30a2\u30ca\u30a6\u30f3\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><span 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