{"id":68846,"date":"2026-03-26T20:26:18","date_gmt":"2026-03-26T11:26:18","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=68846&#038;preview=true&#038;preview_id=68846"},"modified":"2026-03-31T16:30:13","modified_gmt":"2026-03-31T07:30:13","slug":"ssl-handshake-failed","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/ssl-handshake-failed\/","title":{"rendered":"SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\uff08Cloudflare 525\uff09\u306e\u539f\u56e0\u3068\u89e3\u6c7a\u65b9\u6cd55\u9078"},"content":{"rendered":"<p>WordPress\u30b5\u30a4\u30c8\u306b<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/wordpress-ssl-certificates\/\">Secure Sockets Layer\uff08SSL\uff09\u8a3c\u660e\u66f8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a>\u3059\u308b\u3068\u3001HTTPS\u3092\u5229\u7528\u3057\u305f\u5b89\u5168\u306a\u901a\u4fe1\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u6709\u52b9\u306aSSL\u8a3c\u660e\u66f8\u306e\u78ba\u8a8d\u3084\u3001\u30b5\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u3068\u8a2a\u554f\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u9593\u3067\u306e\u63a5\u7d9a\u78ba\u7acb\u306e\u904e\u7a0b\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u554f\u984c\u306b\u906d\u9047\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&#038;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:cb8c4caa-98e2-40d4-9326-e32bda8e2c83-0\" data-testid=\"conversation-turn-2\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&#038;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"5297d782-6bcb-45fd-87eb-d3ee94732911\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\">\n<p data-start=\"149\" data-end=\"328\">\u305f\u3068\u3048\u3070\u3001\u300cSSL Handshake Failed\uff08SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u5931\u6557\uff09\u300d\u3068\u3044\u3063\u305f\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u304c\u3001\u8868\u793a\u3055\u308c\u308b\u60c5\u5831\u3060\u3051\u3067\u306f\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3065\u3089\u3044\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u306b\u304a\u56f0\u308a\u306e\u65b9\u306f\u3001\u3053\u306e\u8a18\u4e8b\u304c\u5f79\u7acb\u3064\u306f\u305a\u3067\u3059\u3002<\/p>\n<p data-start=\"330\" data-end=\"415\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u6982\u8981\u3068\u4e3b\u306a\u539f\u56e0\u3001\u305d\u3057\u3066\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u30925\u7a2e\u985e\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2>SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3068\u306f\uff1f<\/h2>\n<p data-start=\"19\" data-end=\"183\">TLS\/SSL\u306e\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304f\u524d\u306b\u3001\u307e\u305a\u300cTLS\/SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u300d\u3068\u306f\u4f55\u304b\u3092\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<a href=\"https:\/\/kinsta.com\/blog\/how-ssl-works\/\">Secure Sockets Layer\uff08SSL\uff09<\/a>\u3068<a href=\"https:\/\/kinsta.com\/jp\/blog\/tls-1-3\/\">Transport Layer Security\uff08TLS\uff09<\/a>\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30d6\u30e9\u30a6\u30b6\u306a\u3069\u306e\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u8a8d\u8a3c\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n<p data-start=\"185\" data-end=\"307\"><a href=\"https:\/\/kinsta.com\/jp\/blog\/redirect-http-to-https\/\">HTTPS<\/a>\u3067\u30b5\u30a4\u30c8\u3092\u5b89\u5168\u306b\u4fdd\u8b77\u3059\u308b\u306b\u306f\u3001SSL\u8a3c\u660e\u66f8\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u306a\u304a\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/tls-vs-ssl\/\">TLS\u3068SSL\u306e\u9055\u3044\u306f\u3053\u3061\u3089<\/a>\u3067\u3054\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f\u4e21\u8005\u306f\u540c\u3058\u610f\u5473\u3067\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306f\u307e\u3068\u3081\u3066\u300cSSL\u300d\u3068\u8868\u8a18\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"309\" data-end=\"449\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3068\u306f\u3001HTTPS\u63a5\u7d9a\u3092\u78ba\u7acb\u3059\u308b\u969b\u306b\u6700\u521d\u306b\u884c\u308f\u308c\u308b\u30d7\u30ed\u30bb\u30b9\u3067\u3059\u3002\u5b89\u5168\u306a\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30d6\u30e9\u30a6\u30b6\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff09\u3068\u30b5\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u4e00\u9023\u306e\u78ba\u8a8d\u51e6\u7406\uff08\uff1d\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\uff09\u3092\u884c\u3044\u3001\u63a5\u7d9a\u306b\u5fc5\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"451\" data-end=\"592\">\u5177\u4f53\u7684\u306b\u306f\u3001\u307e\u305a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08\u901a\u5e38\u306f\u30d6\u30e9\u30a6\u30b6\uff09\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u5b89\u5168\u306a\u63a5\u7d9a\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u53d6\u3063\u305f\u30b5\u30fc\u30d0\u30fc\u306f\u516c\u958b\u9375\u3092\u8fd4\u3057\u3001\u305d\u306e\u9375\u304c\u4fe1\u983c\u3067\u304d\u308b\u8a3c\u660e\u66f8\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u304b\u3092\u691c\u8a3c\u3002\u305d\u306e\u5f8c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u5171\u901a\u9375\u304c\u751f\u6210\u3055\u308c\u3001\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<p data-start=\"594\" data-end=\"697\">\u3053\u306eSSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u6b63\u5e38\u306b\u884c\u308f\u308c\u306a\u3051\u308c\u3070\u3001\u5b89\u5168\u306a\u63a5\u7d9a\u306f\u78ba\u7acb\u3055\u308c\u307e\u305b\u3093\u3002\u3053\u308c\u306f<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-security\/\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u5927\u304d\u306a\u30ea\u30b9\u30af<\/a>\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u307e\u305f\u30d7\u30ed\u30bb\u30b9\u81ea\u4f53\u304c\u8907\u96d1\u3067\u8907\u6570\u306e\u8981\u7d20\u304c\u95a2\u308f\u3063\u3066\u3044\u308b\u70b9\u3082\u898b\u9003\u305b\u307e\u305b\u3093\u3002<\/p>\n<p data-start=\"699\" data-end=\"803\" data-is-last-node data-is-only-node>\u305d\u306e\u305f\u3081\u3001\u3069\u3053\u304b\u3067\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u3068\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u5931\u6557\u3057\u305f\u308a\u3001\u300c<a href=\"https:\/\/kinsta.com\/jp\/blog\/your-connection-is-not-private\/\">\u63a5\u7d9a\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/a>\u300d\u3068\u3044\u3063\u305f\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u8a2a\u554f\u8005\u304c\u30b5\u30a4\u30c8\u304b\u3089\u96e2\u8131\u3057\u3066\u3057\u307e\u3046\u539f\u56e0\u306b\u3082\u306a\u308a\u5f97\u307e\u3059\u3002<\/p>\n<h2>SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u7406\u89e3\u3059\u308b<\/h2>\n<p data-start=\"27\" data-end=\"117\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\uff08525\u30a8\u30e9\u30fc\uff09\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30d6\u30e9\u30a6\u30b6\u9593\u3067\u5b89\u5168\u306a\u63a5\u7d9a\u3092\u78ba\u7acb\u3067\u304d\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u8981\u56e0\u306b\u3088\u3063\u3066\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"119\" data-end=\"191\" data-is-last-node data-is-only-node>\u4e00\u822c\u7684\u306b525\u30a8\u30e9\u30fc\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/install-cloudflare\/\">Cloudflare\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3<\/a>\u3068\u30aa\u30ea\u30b8\u30f3\u30b5\u30fc\u30d0\u30fc\u9593\u306eSSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_114474\" aria-describedby=\"caption-attachment-114474\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-114474 size-large\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/06\/ssl-handshake-failed-error-1024x739.jpg\" alt=\"SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\" width=\"1024\" height=\"739\"><figcaption id=\"caption-attachment-114474\" class=\"wp-caption-text\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"94\">\u306a\u304a\u3001SSL\u30a8\u30e9\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3068\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u3044\u305a\u308c\u3067\u3082\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u3088\u304f\u898b\u3089\u308c\u308b\u539f\u56e0\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul data-start=\"96\" data-end=\"162\">\n<li data-section-id=\"1vm3ztl\" data-start=\"96\" data-end=\"122\">\u30c7\u30d0\u30a4\u30b9\u306e\u65e5\u4ed8\u3084\u6642\u523b\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044<\/li>\n<li data-section-id=\"1m6y2kz\" data-start=\"123\" data-end=\"140\">\u30d6\u30e9\u30a6\u30b6\u306e\u8a2d\u5b9a\u306b\u554f\u984c\u304c\u3042\u308b<\/li>\n<li data-section-id=\"hrzjrn\" data-start=\"141\" data-end=\"162\">\u901a\u4fe1\u304c\u7b2c\u4e09\u8005\u306b\u3088\u3063\u3066\u508d\u53d7\u3055\u308c\u3066\u3044\u308b<\/li>\n<\/ul>\n<p data-start=\"164\" data-end=\"192\">\u4e00\u65b9\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u4e3b\u306a\u539f\u56e0\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul data-start=\"194\" data-end=\"289\">\n<li data-section-id=\"wtr1m4\" data-start=\"194\" data-end=\"222\">\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\uff08Cipher Suites\uff09\u306e\u4e0d\u4e00\u81f4<\/li>\n<li data-section-id=\"5sub0b\" data-start=\"223\" data-end=\"261\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u30b5\u30fc\u30d0\u30fc\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044<\/li>\n<li data-section-id=\"qwiaq3\" data-start=\"262\" data-end=\"289\">\u8a3c\u660e\u66f8\u304c\u4e0d\u5b8c\u5168\u3001\u7121\u52b9\u3001\u307e\u305f\u306f\u6709\u52b9\u671f\u9650\u5207\u308c<\/li>\n<\/ul>\n<p data-start=\"291\" data-end=\"354\" data-is-last-node data-is-only-node>\u4e00\u822c\u7684\u306b\u306f\u3001SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u3001\u30b5\u30a4\u30c8\u3084\u30b5\u30fc\u30d0\u30fc\u5074\u306eSSL\u8a2d\u5b9a\u306b\u539f\u56e0\u304c\u3042\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<h2>SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5\uff085\u7a2e\u985e\uff09<\/h2>\n<div class=\"flex flex-col text-sm pb-25\">\n<section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&#038;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:cb8c4caa-98e2-40d4-9326-e32bda8e2c83-4\" data-testid=\"conversation-turn-10\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&#038;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"e43c935c-5231-4e1a-9352-3b79dbde9497\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\">\n<p data-start=\"42\" data-end=\"110\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u306f\u8907\u6570\u3042\u308b\u305f\u3081\u3001\u300c\u3053\u3046\u3059\u308c\u3070OK\u300d\u3068\u3044\u3046\u6c7a\u307e\u3063\u305f\u89e3\u6c7a\u7b56\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u554f\u984c\u306e\u5207\u308a\u5206\u3051\u3068\u89e3\u6c7a\u306b\u5f79\u7acb\u3064\u57fa\u672c\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u539f\u56e0\u3068\u306a\u308a\u5f97\u308b\u8981\u7d20\u3092\u4e00\u3064\u305a\u3064\u78ba\u8a8d\u3057\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u30a8\u30e9\u30fc\u306e\u89e3\u6d88\u306b\u3064\u306a\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u30015\u3064\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"z-0 flex min-h-[46px] justify-start\"><\/div>\n<div class=\"mt-3 w-full empty:hidden\">\n<div class=\"text-center\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div><\/div><kinsta-auto-toc list-style=\"disc\" selector=\"h3\" count-number=\"5\" sub-toc=\"true\"><\/kinsta-auto-toc>\n<h3>1. \u30b7\u30b9\u30c6\u30e0\u306e\u65e5\u4ed8\u3068\u6642\u523b\u3092\u78ba\u8a8d\u30fb\u4fee\u6b63\u3059\u308b<\/h3>\n<div class=\"flex flex-col text-sm pb-25\">\n<section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&#038;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:cb8c4caa-98e2-40d4-9326-e32bda8e2c83-5\" data-testid=\"conversation-turn-12\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&#038;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"bf117abe-ab1c-49b4-b14d-621d84f43567\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\">\n<p data-start=\"27\" data-end=\"93\">\u307e\u305a\u306f\u3001\u53ef\u80fd\u6027\u3068\u3057\u3066\u306f\u3084\u3084\u4f4e\u3044\u3082\u306e\u306e\u3001\u304a\u4f7f\u3044\u306e\u30d1\u30bd\u30b3\u30f3\u306e\u65e5\u6642\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"95\" data-end=\"199\">\u30b7\u30b9\u30c6\u30e0\u306e\u65e5\u4ed8\u3084\u6642\u523b\u304c\u6b63\u3057\u304f\u306a\u3044\u5834\u5408\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/tls-vs-ssl\/#how-do-tls-and-ssl-work-to-secure-data\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af<\/a>\u306e\u59a8\u3052\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u5b9f\u969b\u306e\u6642\u523b\u3088\u308a\u3082\u5927\u304d\u304f\u672a\u6765\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3068\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/wordpress-ssl-certificates\/#check-your-ssl-certificate\">SSL\u8a3c\u660e\u66f8<\/a>\u306e\u6709\u52b9\u6027\u30c1\u30a7\u30c3\u30af\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<p data-start=\"201\" data-end=\"299\">\u3053\u3046\u3057\u305f\u30ba\u30ec\u306f\u3001\u5358\u7d14\u306a\u8a2d\u5b9a\u30df\u30b9\u3060\u3051\u3067\u306a\u304f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4e0d\u5177\u5408\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u539f\u56e0\u304c\u4f55\u3067\u3042\u308c\u3001\u4e00\u5ea6\u30b7\u30b9\u30c6\u30e0\u306e\u6642\u523b\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4fee\u6b63\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"301\" data-end=\"377\" data-is-last-node data-is-only-node>\u6b63\u3057\u3044\u65e5\u6642\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u79fb\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<h3>2. SSL\u8a3c\u660e\u66f8\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p data-start=\"27\" data-end=\"98\">SSL\u8a3c\u660e\u66f8\u306b\u306f\u6709\u52b9\u671f\u9650\u304c\u3042\u308a\u3001\u5e38\u306b\u6b63\u3057\u3044\u691c\u8a3c\u60c5\u5831\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u3001\u6709\u52b9\u671f\u9593\u306f6\u30f6\u6708\u304b\u30892\u5e74\u7a0b\u5ea6\u3067\u3059\u3002<\/p>\n<p data-start=\"100\" data-end=\"224\">\u8a3c\u660e\u66f8\u304c\u5931\u52b9\u3057\u3066\u3044\u305f\u308a\u3001\u671f\u9650\u5207\u308c\u3060\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u305d\u308c\u3092\u691c\u77e5\u3057\u3001SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u5b8c\u4e86\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u3082\u3057SSL\u8a3c\u660e\u66f8\u3092\u30b5\u30a4\u30c8\u306b\u5c0e\u5165\u3057\u3066\u304b\u30891\u5e74\u4ee5\u4e0a\u7d4c\u904e\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u518d\u767a\u884c\u3092\u691c\u8a0e\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<p data-start=\"226\" data-end=\"281\" data-is-last-node data-is-only-node>SSL\u8a3c\u660e\u66f8\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001Qualys\u304c\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3088\u3046\u306a<a href=\"https:\/\/www.ssllabs.com\/ssltest\/analyze.html\">SSL\u30c1\u30a7\u30c3\u30ab\u30fc\u30c4\u30fc\u30eb<\/a>\u3092\u5229\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_73400\" aria-describedby=\"caption-attachment-73400\" style=\"width: 985px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73400\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/05\/qualys-labs-1.png\" alt=\"Qualys\u63d0\u4f9b\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u30c4\u30fc\u30eb\" width=\"985\" height=\"368\"><figcaption id=\"caption-attachment-73400\" class=\"wp-caption-text\">Qualys\u63d0\u4f9b\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u30c4\u30fc\u30eb<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"77\">\u3053\u306e\u30c4\u30fc\u30eb\u306f\u9ad8\u54c1\u8cea\u304b\u3064\u7121\u6599\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u4f7f\u3044\u65b9\u3082\u7c21\u5358\u3067\u3001\u300c<strong>Hostname<\/strong>\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3057\u3001\u300c<strong>Submit<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3060\u3051OK\u3067\u3059\u3002\u3059\u308b\u3068\u3001\u30b5\u30a4\u30c8\u306eSSL\u8a2d\u5b9a\u3092\u5206\u6790\u3057\u305f\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_73404\" aria-describedby=\"caption-attachment-73404\" style=\"width: 903px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73404\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/05\/ssl-certificate-status-1.jpg\" alt=\"Qualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u306e\u7d50\u679c\u30da\u30fc\u30b8\" width=\"903\" height=\"421\"><figcaption id=\"caption-attachment-73404\" class=\"wp-caption-text\">Qualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u306e\u7d50\u679c\u30da\u30fc\u30b8<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"50\">\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001SSL\u8a3c\u660e\u66f8\u304c\u73fe\u5728\u3082\u6709\u52b9\u304b\u3069\u3046\u304b\u3001\u307e\u305f\u4f55\u3089\u304b\u306e\u7406\u7531\u3067\u5931\u52b9\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p data-start=\"52\" data-end=\"144\" data-is-last-node data-is-only-node>\u3044\u305a\u308c\u306e\u5834\u5408\u3067\u3082\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/wordpress-ssl-certificates\/#renew-custom-ssl-certificate\">SSL\u8a3c\u660e\u66f8\u3092\u66f4\u65b0<\/a>\u3059\u308b\u3053\u3068\u3067\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306f\u89e3\u6d88\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u30b5\u30a4\u30c8\u3084<a href=\"https:\/\/kinsta.com\/jp\/blog\/woocommerce-ssl\/\">WooCommerce\u30b9\u30c8\u30a2<\/a>\u306e\u5b89\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u3046\u3048\u3067\u3082\u66f4\u65b0\u306f\u975e\u5e38\u306b\u91cd\u8981\uff09\u3002<\/p>\n<h3>3. \u30d6\u30e9\u30a6\u30b6\u304c\u6700\u65b0\u306eSSL\/TLS\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/h3>\n<p data-start=\"41\" data-end=\"123\">\u554f\u984c\u306e\u6839\u672c\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b\u306b\u306f\u3001\u300c\u5207\u308a\u5206\u3051\u300d\u304c\u6709\u52b9\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u524d\u8ff0\u306e\u3068\u304a\u308a\u3001SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u5931\u6557\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u8a2d\u5b9a\u30df\u30b9\u304c\u539f\u56e0\u3067\u8d77\u3053\u308b\u3053\u3068\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p data-start=\"125\" data-end=\"252\">\u7279\u5b9a\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u554f\u984c\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u624b\u65e9\u304f\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u5225\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u5207\u308a\u66ff\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u539f\u56e0\u306e\u7bc4\u56f2\u3092\u7d5e\u308a\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u62e1\u5f35\u6a5f\u80fd\u3092\u7121\u52b9\u5316\u3057\u305f\u308a\u3001\u8a2d\u5b9a\u3092\u521d\u671f\u72b6\u614b\u306b\u30ea\u30bb\u30c3\u30c8\u3057\u305f\u308a\u3059\u308b\u306e\u3082\u624b\u3067\u3059\u3002<\/p>\n<p data-start=\"254\" data-end=\"386\">\u3055\u3089\u306b\u3001\u30d6\u30e9\u30a6\u30b6\u95a2\u9023\u306e\u554f\u984c\u3068\u3057\u3066\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4e0d\u4e00\u81f4\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30b5\u30fc\u30d0\u30fc\u304cTLS 1.2\u306e\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u306e\u306b\u5bfe\u3057\u3001\u30d6\u30e9\u30a6\u30b6\u5074\u304cTLS 1.0\u3084TLS 1.1\u3057\u304b\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u5171\u901a\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u5b58\u5728\u305b\u305a\u3001SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306f\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"388\" data-end=\"495\">\u3053\u306e\u554f\u984c\u306e\u78ba\u8a8d\u65b9\u6cd5\u306f\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306fChrome\u3067\u306e\u624b\u9806\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u307e\u305a\u306f\u30d6\u30e9\u30a6\u30b6\u3092\u958b\u304d\u3001\u300c<strong>\u8a2d\u5b9a<\/strong>\u300d\uff1e\u300c<strong>\u30b7\u30b9\u30c6\u30e0<\/strong>\u300d\u3092\u9078\u629e\u3057\u3001\u300c<strong>\u30d1\u30bd\u30b3\u30f3\u306e\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u3092\u958b\u304f<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_68851\" aria-describedby=\"caption-attachment-68851\" style=\"width: 1218px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-68851 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system.png\" alt=\"Google Chrome\u306e\u30b7\u30b9\u30c6\u30e0\u8a2d\u5b9a\u30da\u30fc\u30b8\" width=\"1218\" height=\"607\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system.png 1218w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system-300x150.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system-1024x510.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system-768x383.png 768w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2026\/03\/chrome-settings-system-800x400.png 800w\" sizes=\"auto, (max-width: 1218px) 100vw, 1218px\" \/><figcaption id=\"caption-attachment-68851\" class=\"wp-caption-text\">Google Chrome\u306e\u30b7\u30b9\u30c6\u30e0\u8a2d\u5b9a\u30da\u30fc\u30b8<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"122\">\u30a6\u30a3\u30f3\u30c9\u30a6\u304c\u958b\u3044\u305f\u3089\u3001\u300c<strong>\u8a73\u7d30\u8a2d\u5b9a<\/strong>\u300d\u30bf\u30d6\u3092\u9078\u629e\u3057\u3066\u3001\u300c<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong>\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u300c<strong>TLS 1.2\u306e\u4f7f\u7528<\/strong>\u300d\u306b\u30c1\u30a7\u30c3\u30af\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5165\u3063\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u30c1\u30a7\u30c3\u30af\u3092\u5165\u308c\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_73401\" aria-describedby=\"caption-attachment-73401\" style=\"width: 914px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73401\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/05\/ssl-tls-settings-1-1.jpg\" alt=\"Windows\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u8a73\u7d30\u8a2d\u5b9a\" width=\"914\" height=\"567\"><figcaption id=\"caption-attachment-73401\" class=\"wp-caption-text\">Windows\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u8a73\u7d30\u8a2d\u5b9a<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"44\">\u307e\u305f\u3001\u300c<strong>SSL 2.0\u3092\u4f7f\u7528\u3059\u308b<\/strong>\u300d\u304a\u3088\u3073\u300c<strong>SSL 3.0\u3092\u4f7f\u7528\u3059\u308b<\/strong>\u300d\u306e\u30c1\u30a7\u30c3\u30af\u306f\u5916\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"46\" data-end=\"147\">\u540c\u69d8\u306b\u3001TLS 1.0\u304a\u3088\u3073TLS 1.1\u306f\u975e\u63a8\u5968\u3067\u3042\u308b\u305f\u3081\u3001\u7121\u52b9\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u305f\u3089\u300c<strong>OK<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p data-start=\"149\" data-end=\"295\" data-is-last-node data-is-only-node>Safari\u3084macOS\u3067\u306f\u3001TLS\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u500b\u5225\u306b\u6709\u52b9\u30fb\u7121\u52b9\u5316\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u306e\u8a2d\u5b9a\u306f\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002TLS 1.2\u4ee5\u964d\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u3068\u306a\u3063\u3066\u304a\u308a\u3001TLS 1.0\u304a\u3088\u30731.1\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u307e\u305f\u3001Linux\u74b0\u5883\u306e\u5834\u5408\u306f\u3001<a href=\"https:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/7\/html\/security_guide\/sec-hardening_tls_configuration\">Red Hat\u306eTLS\u30cf\u30fc\u30c9\u30cb\u30f3\u30b0\u306b\u95a2\u3059\u308b\u89e3\u8aac<\/a>\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>4. \u30b5\u30fc\u30d0\u30fc\u304cSNI\u306b\u6b63\u3057\u304f\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/h3>\n<p data-start=\"32\" data-end=\"137\">SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u5931\u6557\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-reference\/technical-faq\/\">Server Name Indication\uff08SNI\uff09\u306e\u8a2d\u5b9a<\/a>\u4e0d\u5099\u304c\u539f\u56e0\u3067\u767a\u751f\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002SNI\u3068\u306f\u30011\u3064\u306eIP\u30a2\u30c9\u30ec\u30b9\u3067\u8907\u6570\u306eTLS\u8a3c\u660e\u66f8\u3092\u5b89\u5168\u306b\u904b\u7528\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p data-start=\"139\" data-end=\"246\">\u901a\u5e38\u3001\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u5404\u30b5\u30a4\u30c8\u306b\u306f\u305d\u308c\u305e\u308c\u56fa\u6709\u306eSSL\u8a3c\u660e\u66f8\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304cSNI\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u3069\u306e\u8a3c\u660e\u66f8\u3092\u63d0\u793a\u3059\u3079\u304d\u304b\u5224\u65ad\u3067\u304d\u305a\u3001SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p data-start=\"248\" data-end=\"371\">\u30b5\u30a4\u30c8\u304cSNI\u3092\u5fc5\u8981\u3068\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u3001\u305f\u3068\u3048\u3070\u524d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u7d39\u4ecb\u3057\u305fQualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u3067\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3057\u3001\u300c<strong>Submit<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_73398\" aria-describedby=\"caption-attachment-73398\" style=\"width: 911px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73398\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/05\/browser-sni-support-1.jpg\" alt=\"Qualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u30c4\u30fc\u30eb\u306e\u7d50\u679c\u30da\u30fc\u30b8\" width=\"911\" height=\"434\"><figcaption id=\"caption-attachment-73398\" class=\"wp-caption-text\">Qualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u30c4\u30fc\u30eb\u306e\u7d50\u679c\u30da\u30fc\u30b8<\/figcaption><\/figure>\n<div class=\"flex flex-col text-sm pb-25\">\n<section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&#038;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:cb8c4caa-98e2-40d4-9326-e32bda8e2c83-14\" data-testid=\"conversation-turn-30\" data-scroll-anchor=\"true\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&#038;]:mt-1\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"a7e0782f-aa70-4a51-a9de-b48992fd7b59\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\">\n<p data-start=\"0\" data-end=\"113\">\u307e\u305f\u3001\u300cClientHello\u300d\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u542b\u307e\u308c\u308b\u30b5\u30fc\u30d0\u30fc\u540d\u3092\u78ba\u8a8d\u3059\u308b\u624b\u6bb5\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u3061\u3089\u306f\u3084\u3084\u9ad8\u5ea6\u306a\u65b9\u6cd5\u3067\u3059\u304c\u3001\u3088\u308a\u8a73\u7d30\u306a\u60c5\u5831\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p data-start=\"115\" data-end=\"186\">\u62e1\u5f35\u3055\u308c\u305fHello\u30d8\u30c3\u30c0\u30fc\u5185\u306b\u3042\u308b\u300cserver_name\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u9069\u5207\u306a\u8a3c\u660e\u66f8\u304c\u63d0\u793a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p data-start=\"188\" data-end=\"326\" data-is-last-node data-is-only-node><a href=\"https:\/\/www.openssl.org\/\">OpenSSL\u30c4\u30fc\u30eb\u30ad\u30c3\u30c8<\/a>\u3084<a href=\"https:\/\/www.wireshark.org\/index.html#download\">Wireshark<\/a>\u306a\u3069\u306e\u30c4\u30fc\u30eb\u306b\u6163\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u3053\u306e\u65b9\u6cd5\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001<code data-start=\"252\" data-end=\"270\">openssl s_client<\/code>\u30b3\u30de\u30f3\u30c9\u3092<code data-start=\"275\" data-end=\"288\">-servername<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u3042\u308a\u30fb\u306a\u3057\u306e\u4e21\u65b9\u3067\u5b9f\u884c\u3057\u3001\u6319\u52d5\u306e\u9055\u3044\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u3067\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<pre><code># without SNI\n $ openssl s_client -connect host:port \n\n # use SNI\n $ openssl s_client -connect host:port -servername host<\/code><\/pre>\n<p data-start=\"0\" data-end=\"83\"><code data-start=\"0\" data-end=\"13\">-servername<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u6709\u7121\u3067\u5b9f\u884c\u3057\u305f\u7d50\u679c\u3001\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u5bfe\u3057\u3066\u540c\u4e00\u306e\u8a3c\u660e\u66f8\u304c\u8fd4\u3063\u3066\u304f\u308b\u5834\u5408\u306f\u3001SNI\u304c\u6b63\u3057\u304f\u30b5\u30dd\u30fc\u30c8\u30fb\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<p data-start=\"85\" data-end=\"206\" data-is-last-node data-is-only-node>\u4e00\u65b9\u3067\u3001\u8fd4\u3055\u308c\u308b\u8a3c\u660e\u66f8\u306e\u5185\u5bb9\u304c\u7570\u306a\u308b\u3001\u3042\u308b\u3044\u306fSNI\u306a\u3057\u306e\u63a5\u7d9a\u3067SSL\u304c\u78ba\u7acb\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001SNI\u304c\u5fc5\u8981\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/dedicated-ip-address\/\">\u5c02\u7528IP\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u5207\u308a\u66ff\u3048<\/a>\u306a\u3069\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>5. \u6697\u53f7\u30b9\u30a4\u30fc\u30c8\uff08Cipher Suites\uff09\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/h3>\n<p data-start=\"42\" data-end=\"203\">\u3053\u3053\u307e\u3067\u3092\u5b9f\u8df5\u3057\u3066\u3082\u30a8\u30e9\u30fc\u304c\u89e3\u6c7a\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/err_ssl_version_or_cipher_mismatch\/\">\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\uff08cipher suites\uff09\u306e\u4e0d\u4e00\u81f4<\/a>\u304c\u539f\u56e0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u3068\u306f\u3001\u9375\u4ea4\u63db\u30fb\u30c7\u30fc\u30bf\u306e\u6697\u53f7\u5316\u30fb\u30e1\u30c3\u30bb\u30fc\u30b8\u8a8d\u8a3c\u30b3\u30fc\u30c9\uff08MAC\uff09\u306a\u3069\u3001SSL\/TLS\u901a\u4fe1\u3092\u5b89\u5168\u306b\u884c\u3046\u305f\u3081\u306e\u8907\u6570\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p data-start=\"205\" data-end=\"310\">\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u304c\u3001Cloudflare\u5074\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3068\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3001\u3042\u308b\u3044\u306f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p data-start=\"312\" data-end=\"363\">\u3053\u308c\u306b\u3064\u3044\u3066\u3082\u3001\u5148\u307b\u3069\u306eQualys\u306eSSL\u30c1\u30a7\u30c3\u30ab\u30fc\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3057\u3066\u300c<strong>Submit<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u5206\u6790\u7d50\u679c\u306e\u6982\u8981\u30da\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u4e2d\u306e\u300cCipher Suites\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306e\u60c5\u5831\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_73403\" aria-describedby=\"caption-attachment-73403\" style=\"width: 911px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-73403\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/05\/qualys-cipher-suites-1.png\" alt=\"Qualys\u306eSSL\u30ec\u30dd\u30fc\u30c8\u306eCipher Suites\u30bb\u30af\u30b7\u30e7\u30f3\" width=\"911\" height=\"402\"><figcaption id=\"caption-attachment-73403\" class=\"wp-caption-text\">Qualys\u306eSSL\u30ec\u30dd\u30fc\u30c8\u306eCipher Suites\u30bb\u30af\u30b7\u30e7\u30f3<\/figcaption><\/figure>\n<p data-start=\"0\" data-end=\"127\">\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u6697\u53f7\u65b9\u5f0f\uff08cipher\uff09\u3084\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u300cweak\uff08\u8106\u5f31\uff09\u300d\u3068\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u304c\u306a\u3044\u304b\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002\u307e\u305f\u3001\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u5404\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306b\u542b\u307e\u308c\u308b\u5177\u4f53\u7684\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u8a73\u7d30\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p data-start=\"129\" data-end=\"275\" data-is-last-node data-is-only-node>\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001<a href=\"https:\/\/clienttest.ssllabs.com:8443\/ssltest\/viewMyClient.html\">Qualys\u306eSSL\/TLS Capabilities of Your Browser<\/a>\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u5074\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5185\u5bb9\u3068\u6bd4\u8f03\u3059\u308b\u306e\u304c\u6709\u52b9\u3067\u3059\u3002\u3055\u3089\u306b\u3001<a href=\"https:\/\/comodosslstore.com\/resources\/ssl-cipher-suites-ultimate-guide\/\">\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306b\u3064\u3044\u3066\u3088\u308a\u8a73\u3057\u304f\u7406\u89e3\u3057\u305f\u3044\u5834\u5408\u306f\u3053\u3061\u3089<\/a>\u3082\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p data-start=\"9\" data-end=\"132\">\u300cSSL Handshake Failed\u300d\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001SSL\u95a2\u9023\u30a8\u30e9\u30fc\u306e\u4e2d\u3067\u3082\u7279\u306b\u539f\u56e0\u304c\u5206\u304b\u308a\u306b\u304f\u304f\u3001\u305d\u308c\u3067\u3044\u3066\u6bd4\u8f03\u7684\u3088\u304f\u767a\u751f\u3059\u308b\u554f\u984c\u306e\u4e00\u3064\u3067\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3068\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u4e21\u65b9\u306b\u539f\u56e0\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5bfe\u5fdc\u306b\u624b\u3053\u305a\u308b\u4eba\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p data-start=\"134\" data-end=\"202\">\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f\u3088\u3046\u306b\u539f\u56e0\u3092\u5207\u308a\u5206\u3051\u306a\u304c\u3089\u78ba\u8a8d\u3057\u3066\u3044\u3051\u3070\u3001\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul data-start=\"204\" data-end=\"363\">\n<li data-section-id=\"qcqswz\" data-start=\"204\" data-end=\"226\">\u30b7\u30b9\u30c6\u30e0\u306e\u65e5\u4ed8\u3068\u6642\u523b\u3092\u78ba\u8a8d\u30fb\u4fee\u6b63\u3059\u308b<\/li>\n<li data-section-id=\"9g5871\" data-start=\"227\" data-end=\"260\">SSL\u8a3c\u660e\u66f8\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\uff08\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u767a\u884c\uff09<\/li>\n<li data-section-id=\"75yqn8\" data-start=\"261\" data-end=\"297\">\u30d6\u30e9\u30a6\u30b6\u304c\u6700\u65b0\u306eTLS\/SSL\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/li>\n<li data-section-id=\"1hziho7\" data-start=\"298\" data-end=\"325\">\u30b5\u30fc\u30d0\u30fc\u304cSNI\u306b\u6b63\u3057\u304f\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/li>\n<li data-section-id=\"17ylta8\" data-start=\"326\" data-end=\"363\">\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\uff08Cipher Suites\uff09\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b<\/li>\n<\/ul>\n<p data-start=\"365\" data-end=\"427\" data-is-last-node data-is-only-node>\u3053\u308c\u3089\u3092\u9806\u756a\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u7279\u5b9a\u3068\u89e3\u6c7a\u306b\u3064\u306a\u304c\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WordPress\u30b5\u30a4\u30c8\u306bSecure Socket &#8230;<\/p>\n","protected":false},"author":103,"featured_media":68847,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[757,821],"class_list":["post-68846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-cloudflare","topic-website-errors"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SSL\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30a8\u30e9\u30fc\u3068Cloudflare 525\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd55\u9078<\/title>\n<meta name=\"description\" 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