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<strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/strong>-\u3001\u30b5\u30fc\u30d0\u30fc\u3001\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ec\u30d9\u30eb\u306e\u30ae\u30e3\u30c3\u30d7\u3092\u958b\u304d\u3001\u653b\u6483\u8005\u304c\u7c21\u5358\u306b\u60aa\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u958b\u3044\u3066\u3044\u308b\u7ba1\u7406\u30dd\u30fc\u30c8\u3001\u8aa4\u3063\u305f CORS \u30eb\u30fc\u30eb\u3001\u307e\u305f\u306f\u5fd8\u308c\u3089\u308c\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u6700\u521d\u306e\u30a2\u30af\u30bb\u30b9\u306b\u5341\u5206\u3067\u3059\u3002 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\u516c\u958b\u3055\u308c\u305f\u30d0\u30b1\u30c3\u30c8\u3001\u5171\u6709\u3001\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u306f\u3001\u30c7\u30fc\u30bf\u6f0f\u6d29\u306e\u539f\u56e0\u3068\u306a\u308a\u3084\u3059\u3044\u3082\u306e\u3067\u3059\u3002\u79c1\u306f\u3001\u5171\u6709\u3092\u78ba\u8a8d\u3057\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u3001\u30a2\u30af\u30bb\u30b9\u30ed\u30b0\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b0\u30eb\u30fc\u30d7\u306f\u3001\u65e2\u77e5\u306e\u30bd\u30fc\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u5fc5\u8981\u306a\u30dd\u30fc\u30c8\u306b\u9650\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002DNS \u306f\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u8aa4\u3063\u305f\u30be\u30fc\u30f3\u3001\u30aa\u30fc\u30d7\u30f3\u306a\u8ee2\u9001\u3001\u6539\u3056\u3093\u3055\u308c\u305f\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u5b8c\u5168\u6027\u3092\u8105\u304b\u3059\u3082\u306e\u3067\u3059\u3002\u6709\u7528\u306a\u30d2\u30f3\u30c8\u306f\u3001\u30ac\u30a4\u30c9\u300c <a href=\"https:\/\/webhosting.de\/ja\/dns%e3%81%ae%e8%aa%a4%e8%a8%ad%e5%ae%9a%e3%82%92%e8%aa%8d%e8%ad%98%e3%81%99%e3%82%8b-%e3%82%a8%e3%83%a9%e3%83%bc%e5%88%86%e6%9e%90%e3%83%84%e3%83%bc%e3%83%ab-dns%e3%81%ae%e3%83%92%e3%83%b3%e3%83%88\/\">DNS\u306e\u8a2d\u5b9a\u30df\u30b9<\/a>, \u79c1\u304c\u76e3\u67fb\u3067\u8003\u616e\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u30af\u30ea\u30fc\u30f3\u306a\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u30b9\u30ea\u30e0\u306b\u4fdd\u3061\u307e\u3059\u3002 <strong>\u53ef\u5909<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/11\/security-hosting-fehler-vermeiden-7824.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3068\u30d5\u30a1\u30a4\u30eb\uff1a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30ea\u30b9\u30c8\u304b\u3089 .bash_history \u307e\u3067<\/h2>\n\n<p>Web\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u6a19\u6e96\u7684\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3084\u30b5\u30f3\u30d7\u30eb\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u79c1\u306f\u305d\u308c\u3089\u3092\u3059\u3079\u3066\u524a\u9664\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u60c5\u5831\u6f0f\u3048\u3044<\/strong> \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30ea\u30b9\u30c8\u3092\u7121\u52b9\u306b\u3057\u3066\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5185\u5bb9\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002.env\u3001.git\u3001.svn\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30a2\u30fc\u30ab\u30a4\u30d6\u3001\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306e\u6a5f\u5bc6\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u4e88\u671f\u305b\u305a\u3001Web \u30eb\u30fc\u30c8\u306b .bash_history \u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u306b\u306f\u30a2\u30af\u30bb\u30b9\u30c7\u30fc\u30bf\u3092\u542b\u3080\u30b3\u30de\u30f3\u30c9\u304c\u8a18\u8f09\u3055\u308c\u3066\u304a\u308a\u3001\u79c1\u306f\u3059\u3050\u306b\u305d\u308c\u3092\u524a\u9664\u3057\u3001\u4eca\u5f8c\u306f\u6a29\u9650\u3068\u30c7\u30d7\u30ed\u30a4\u6226\u7565\u306b\u3088\u3063\u3066\u30a2\u30af\u30bb\u30b9\u3092\u5236\u9650\u3057\u307e\u3059\u3002 \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u306b\u5bfe\u3057\u3066\u306f\u3001\u5236\u9650\u7684\u306a\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u30eb\u30fc\u30bf\u30fc\u304c <strong>\u30b7\u30b9\u30c6\u30e0\u30d1\u30b9<\/strong> \u8a31\u53ef\u3059\u308b\u3002.<\/p>\n\n<h2>\u5f37\u529b\u306a\u8a8d\u8a3c\u306e\u5b9f\u88c5<\/h2>\n\n<p>\u79c1\u306f\u3001\u3059\u3079\u3066\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306eID\u3092\u76f4\u3061\u306b\u5909\u66f4\u3057\u3001\u9577\u3044\u30d1\u30b9\u30d5\u30ec\u30fc\u30ba\u3092\u5f37\u5236\u3057\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u518d\u5229\u7528\u3092\u62d2\u5426\u3059\u308b\u3053\u3068\u3067\u3001 <strong>\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9<\/strong>-\u8a66\u307f\u306f\u7121\u99c4\u306b\u7d42\u308f\u308b\u3002\u7ba1\u7406\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u3068\u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u306f\u3001\u30a2\u30d7\u30ea\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30c8\u30fc\u30af\u30f3\u3092\u4f7f\u3063\u305f\u591a\u8981\u7d20\u8a8d\u8a3c\u3092\u6709\u52b9\u306b\u3059\u308b\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u3001\u9577\u3055\u3001\u66f4\u65b0\u983b\u5ea6\u3001\u5c65\u6b74\u306a\u3069\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3059\u308b\u3002\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001\u30d1\u30b9\u30d5\u30ec\u30fc\u30ba\u3084\u30b7\u30b9\u30c6\u30e0\u7ba1\u7406\u306e\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3002 \u30b5\u30fc\u30d3\u30b9\u30a2\u30ab\u30a6\u30f3\u30c8\u306f\u3001\u30bf\u30b9\u30af\u3054\u3068\u306b\u53b3\u5bc6\u306b\u5206\u96e2\u3057\u3001\u6a29\u9650\u3092\u53b3\u3057\u304f\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30cd\u30eb\u3001SSH\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u3001\u672c\u5f53\u306b\u5fc5\u8981\u306a\u30e6\u30fc\u30b6\u30fc\u306e\u307f\u306b\u8a31\u53ef\u3057\u3066\u304a\u308a\u3001\u76e3\u67fb\u3068 <strong>\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3<\/strong> \u3092\u4fc3\u9032\u3057\u305f\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/11\/securityhostingfehler3842.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5b9f\u8df5\u306b\u304a\u3051\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u5f37\u5316<\/h2>\n\n<p>\u30cf\u30fc\u30c9\u30cb\u30f3\u30b0\u306f\u3001\u30b9\u30ea\u30e0\u306a\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304b\u3089\u59cb\u307e\u308a\u3001\u4e00\u8cab\u3057\u305f\u30d1\u30c3\u30c1\u9069\u7528\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30dd\u30ea\u30b7\u30fc\u3001\u5236\u9650\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u6a29\u9650\u3001\u304a\u3088\u3073\u5b89\u5168\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u7d42\u308f\u308a\u307e\u3059\u3002 <strong>\u653b\u6483\u30d9\u30af\u30c8\u30eb<\/strong> \u524a\u6e1b\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u53e4\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u7121\u52b9\u306b\u3057\u3001SSH \u3092\u30ad\u30fc\u306b\u8a2d\u5b9a\u3057\u3001\u6a19\u6e96\u30dd\u30fc\u30c8\u306f\u88dc\u8db3\u7684\u306b\u306e\u307f\u5909\u66f4\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u6e08\u307f\u306e\u30ed\u30ae\u30f3\u30b0\u3001Fail2ban\u3001\u307e\u305f\u306f\u540c\u7b49\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u306e\u8a66\u884c\u3092\u963b\u6b62\u3057\u307e\u3059\u3002\u69cb\u9020\u5316\u3055\u308c\u305f\u5bfe\u7b56\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30ac\u30a4\u30c9\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%82%b5%e3%83%bc%e3%83%90%e3%83%8f%e3%83%bc%e3%83%89%e3%83%8b%e3%83%b3%e3%82%b0-linux-tips-%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e4%bf%9d%e8%ad%b7-%e3%82%b3%e3%83%b3%e3%83%97\/\">Linux\u3067\u306e\u30b5\u30fc\u30d0\u30fc\u5f37\u5316<\/a>, \u79c1\u304c\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3068\u3057\u3066\u4f7f\u3063\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u57fa\u672c\u7684\u306a\u4fdd\u8b77\u3092\u4e00\u8cab\u6027\u306e\u3042\u308b\u3001\u691c\u8a3c\u3057\u3084\u3059\u3044\u3082\u306e\u306b\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30ec\u30d9\u30eb<\/strong>.<\/p>\n\n<h2>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3068\u30d1\u30c3\u30c1\u7ba1\u7406\u3092\u8ce2\u304f\u7ba1\u7406<\/h2>\n\n<p>\u30d1\u30c3\u30c1\u306f\u8fc5\u901f\u306b\u9069\u7528\u3057\u3001\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u5236\u5fa1\u3057\u306a\u304c\u3089\u518d\u8d77\u52d5\u3059\u308b\u6642\u9593\u67a0\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002 <strong>\u7a7a\u5ba4\u72b6\u6cc1<\/strong> \u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u5bc6\u63a5\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002\u81ea\u52d5\u5316\u3055\u308c\u305f\u30d7\u30ed\u30bb\u30b9\u306f\u79c1\u306e\u4f5c\u696d\u3092\u652f\u63f4\u3057\u307e\u3059\u304c\u3001\u79c1\u306f\u7d50\u679c\u3092\u76e3\u8996\u3057\u3001\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u3092\u8aad\u307f\u307e\u3059\u3002\u5927\u304d\u306a\u5909\u66f4\u3092\u884c\u3046\u524d\u306b\u306f\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u74b0\u5883\u3067\u30c6\u30b9\u30c8\u3092\u884c\u3044\u307e\u3059\u3002\u975e\u5e38\u306b\u91cd\u8981\u306a\u3082\u306e\u306b\u3064\u3044\u3066\u306f\u3001\u30a2\u30a6\u30c8\u30aa\u30d6\u30d0\u30f3\u30c9\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d7\u30e9\u30f3\u3092\u5b8c\u6210\u3055\u305b\u307e\u3059\u3002\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u306b\u306f\u3001\u8fc5\u901f\u306a\u610f\u601d\u6c7a\u5b9a\u3092\u53ef\u80fd\u306b\u3059\u308b\u5b9f\u7528\u7684\u306a\u6982\u8981\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30ea\u30b9\u30af<\/strong> \u52b9\u679c\u7684\u306b\u4f4e\u4e0b\u3055\u305b\u307e\u3059\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u8a2d\u5b9a\u30df\u30b9<\/th>\n      <th>\u30ea\u30b9\u30af<\/th>\n      <th>\u7dca\u6025\u63aa\u7f6e<\/th>\n      <th>\u671f\u9593<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>\u6a19\u6e96\u7ba1\u7406\u8005\u30ed\u30b0\u30a4\u30f3\u6709\u52b9<\/td>\n      <td>\u30db\u30b9\u30c8\u5168\u4f53\u306e\u4fb5\u5bb3<\/td>\n      <td>\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u30ed\u30c3\u30af\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u5909\u66f4\u3001MFA \u306e\u6709\u52b9\u5316<\/td>\n      <td>10\uff5e20\u5206<\/td>\n    <\/tr>\n    <tr>\n      <td>TLS \u304c\u6b20\u843d\u3057\u3066\u3044\u308b\u304b\u3001\u53e4\u304f\u306a\u3063\u3066\u3044\u308b<\/td>\n      <td>\u30c7\u30fc\u30bf\u306e\u508d\u53d7\u304a\u3088\u3073\u64cd\u4f5c<\/td>\n      <td>HTTPS \u3092\u5f37\u5236\u3001TLS 1.2+\/1.3 \u3092\u6709\u52b9\u5316\u3001HSTS \u3092\u8a2d\u5b9a<\/td>\n      <td>20\uff5e40\u5206<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30aa\u30fc\u30d7\u30f3\u306a S3\/Blob \u30d0\u30b1\u30c3\u30c8<\/td>\n      <td>\u30d1\u30d6\u30ea\u30c3\u30af\u30a2\u30af\u30bb\u30b9\u306b\u3088\u308b\u30c7\u30fc\u30bf\u6f0f\u6d29<\/td>\n      <td>\u30d1\u30d6\u30ea\u30c3\u30af\u30a2\u30af\u30bb\u30b9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3001\u6697\u53f7\u5316\u3092\u6709\u52b9\u306b\u3057\u3001\u30a2\u30af\u30bb\u30b9\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b<\/td>\n      <td>15\uff5e30\u5206<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30ea\u30b9\u30c8\u3092\u6709\u52b9\u306b\u3059\u308b<\/td>\n      <td>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u69cb\u9020\u306e\u6982\u8981<\/td>\n      <td>AutoIndex \u3092\u7121\u52b9\u306b\u3057\u3001.htaccess\/\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u3092\u8abf\u6574\u3059\u308b<\/td>\n      <td>5\uff5e10\u5206<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d8\u30c3\u30c0\u30fc\u306e\u6b20\u843d<\/td>\n      <td>\u5f31\u3044\u30d6\u30e9\u30a6\u30b6\u4fdd\u8b77<\/td>\n      <td>CSP\u3001HSTS\u3001XFO\u3001X-Content-Type-Options \u3092\u8a2d\u5b9a\u3059\u308b<\/td>\n      <td>20\uff5e30\u5206<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d8\u30c3\u30c0\u30fc\u3068CORS\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3059\u308b<\/h2>\n\n<p>\u30b3\u30f3\u30c6\u30f3\u30c4\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u8a31\u53ef\u3055\u308c\u305f\u30bd\u30fc\u30b9\u3060\u3051\u304c\u30b9\u30af\u30ea\u30d7\u30c8\u3001\u30b9\u30bf\u30a4\u30eb\u3001\u30e1\u30c7\u30a3\u30a2\u3092\u30ed\u30fc\u30c9\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 <strong>XSS<\/strong>-\u30ea\u30b9\u30af\u304c\u6e1b\u5c11\u3057\u307e\u3059\u3002Strict-Transport-Security \u306f\u30d6\u30e9\u30a6\u30b6\u306b HTTPS 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\u8a2d\u5b9a\u306b\u6ce8\u610f\u3059\u308b\u3002\u3055\u3089\u306b\u3001REST API \u3092\u5f37\u5316\u3057\u3001\u4e0d\u8981\u306a\u5834\u5408\u306f XML-RPC \u3092\u7121\u52b9\u306b\u3057\u3001\u614e\u91cd\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002 <strong>\u30d5\u30a1\u30a4\u30eb\u306e\u6a29\u5229<\/strong>.<\/p>\n\n<h2>\u30ed\u30ae\u30f3\u30b0\u3001\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3001\u30a2\u30e9\u30fc\u30e0<\/h2>\n\n<p>\u30a2\u30af\u30bb\u30b9\u3001\u8a8d\u8a3c\u3001\u7ba1\u7406\u8005\u30a2\u30af\u30b7\u30e7\u30f3\u3001\u8a2d\u5b9a\u5909\u66f4\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3057\u3066\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3092\u7d20\u65e9\u304f\u8a8d\u8b58\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u5206\u6790\u3059\u308b<\/strong> \u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u306f\u3001\u7570\u5e38\u306a 401\/403 \u306e\u30d4\u30fc\u30af\u3084\u4e0d\u6b63\u306a CORS \u30a2\u30af\u30bb\u30b9\u306a\u3069\u306e\u7570\u5e38\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u30a2\u30e9\u30fc\u30e0\u306f\u3001\u4fe1\u53f7\u304c\u30ce\u30a4\u30ba\u306b\u57cb\u3082\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u9069\u5207\u306a\u3057\u304d\u3044\u5024\u3067\u5b9a\u7fa9\u3057\u307e\u3057\u305f\u3002 API \u306b\u3064\u3044\u3066\u306f\u3001\u4e0d\u6b63\u4f7f\u7528\u3092\u793a\u3059\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6025\u4e0a\u6607\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u3002\u30ed\u30b0\u306e\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u4fdd\u5b58\u671f\u9593\u306f\u3001\u30c7\u30fc\u30bf\u4fdd\u8b77\u306b\u95a2\u3059\u308b\u6cd5\u7684\u8981\u4ef6\u3092\u9075\u5b88\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u50b7\u3064\u3051\u308b<\/strong>.<\/p>\n\n<h2>\u5b9a\u671f\u7684\u306a\u70b9\u691c\u3068\u660e\u78ba\u306a\u6587\u66f8\u5316<\/h2>\n\n<p>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u7d99\u7d9a\u7684\u306a\u30d7\u30ed\u30bb\u30b9\u3067\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u5f8c\u306f\u3001\u65b0\u3057\u3044\u6a5f\u80fd\u304c\u4f55\u3082 <strong>\u5f15\u304d\u88c2\u304f<\/strong>. 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TLS \u3092\u5fc5\u305a\u6709\u52b9\u306b\u3057\u307e\u3059\u3002\u6a19\u6e96\u30a2\u30ab\u30a6\u30f3\u30c8\u306f\u7121\u52b9\u306b\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b\u304d\u3081\u7d30\u304b\u3044\u30ed\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002 \u300c\u30d1\u30d6\u30ea\u30c3\u30af\u300d\u30b9\u30ad\u30fc\u30de\u3001\u30aa\u30fc\u30d7\u30f3\u306a\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8\u3001\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306a\u3069\u306e\u8a2d\u5b9a\u306f\u4fee\u6b63\u3057\u307e\u3059\u3002Redis \u3084 RabbitMQ \u306a\u3069\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3084\u30e1\u30c3\u30bb\u30fc\u30b8\u30d6\u30ed\u30fc\u30ab\u30fc\u306f\u3001\u5f37\u529b\u306a\u8a8d\u8a3c\u3068\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3092\u5099\u3048\u305f\u4fe1\u983c\u3067\u304d\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306e\u307f\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u6697\u53f7\u5316\u3057\u3001\u30ad\u30fc\u3092\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3057\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u30e9\u30b0\u3092\u76e3\u8996\u3057\u3066\u3001\u72b6\u614b\u30c7\u30fc\u30bf\u3092\u78ba\u5b9f\u306b\u5fa9\u5143\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>CI\/CD\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\uff1a\u30b3\u30df\u30c3\u30c8\u304b\u3089\u30ed\u30fc\u30eb\u30a2\u30a6\u30c8\u307e\u3067<\/h2>\n<p>\u591a\u304f\u306e\u30ea\u30fc\u30af\u306f\u3001\u30d3\u30eb\u30c9\u304a\u3088\u3073\u30c7\u30d7\u30ed\u30a4\u306e\u904e\u7a0b\u3067\u767a\u751f\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u30d3\u30eb\u30c9\u3001\u30c6\u30b9\u30c8\u3001\u304a\u3088\u3073\u672c\u756a\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u5206\u96e2\u3057\u3001\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u30e9\u30f3\u30ca\u30fc\u306e\u6a29\u9650\u3092\u5236\u9650\u3057\u3001\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u304c\u79d8\u5bc6\u5909\u6570\u3084\u30c8\u30fc\u30af\u30f3\u3092\u542b\u3080\u30ed\u30b0\u3092\u542b\u307e\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 \u7f72\u540d\u4ed8\u304d\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3068\u30a4\u30e1\u30fc\u30b8\u306f\u3001\u8ffd\u8de1\u53ef\u80fd\u6027\u3092\u9ad8\u3081\u307e\u3059\u3002\u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u30ec\u30d3\u30e5\u30fc\u306e\u5bfe\u8c61\u3068\u306a\u308a\u3001\u30c6\u30b9\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u8a2d\u5b9a\u5909\u66f4\u304c\u30e1\u30a4\u30f3\u30d6\u30e9\u30f3\u30c1\u306b\u6d41\u5165\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u30d6\u30e9\u30f3\u30c1\u4fdd\u8b77\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30d7\u30ed\u30a4\u30ad\u30fc\u306f\u6709\u52b9\u671f\u9593\u304c\u77ed\u304f\u3001\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3055\u308c\u3001\u5fc5\u8981\u6700\u5c0f\u9650\u306e\u6a29\u9650\u3057\u304b\u6301\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u306f\u3001\u30ea\u30dd\u30b8\u30c8\u30ea\u306e\u5909\u6570\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u306a\u304f\u3001\u4e2d\u592e\u306e\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u30b9\u30c8\u30a2\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h2>\u5b9f\u8df5\u306b\u304a\u3051\u308b\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u7ba1\u7406\u3068\u30ad\u30fc\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3<\/h2>\n<p>\u30d1\u30b9\u30ef\u30fc\u30c9\u3001API\u30ad\u30fc\u3001\u8a3c\u660e\u66f8\u3092\u4e00\u5143\u7ba1\u7406\u3057\u3001\u5f79\u5272\u3054\u3068\u306b\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u5272\u308a\u5f53\u3066\u3001\u3059\u3079\u3066\u306e\u4f7f\u7528\u72b6\u6cc1\u3092\u8a18\u9332\u3057\u307e\u3059\u3002\u6709\u52b9\u671f\u9593\u304c\u77ed\u304f\u3001\u81ea\u52d5\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u74b0\u5883\u3054\u3068\u306b\u500b\u5225\u306e\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4fb5\u5bb3\u306b\u3088\u308b\u88ab\u5bb3\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002 \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u306f\u3001\u9759\u7684\u306a\u30ad\u30fc\u3067\u306f\u306a\u304f\u3001\u52d5\u7684\u3067\u671f\u9593\u9650\u5b9a\u306e\u30a2\u30af\u30bb\u30b9\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u8a3c\u660e\u66f8\u306f\u9069\u6642\u306b\u66f4\u65b0\u3057\u3001\u5f37\u529b\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5f37\u5236\u3057\u307e\u3059\u3002\u30ea\u30dd\u30b8\u30c8\u30ea\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u8aa4\u3063\u3066\u30c1\u30a7\u30c3\u30af\u30a4\u30f3\u3055\u308c\u305f\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u304c\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5c65\u6b74\u3092\u4fee\u6b63\u3057\u3001\u516c\u958b\u3055\u308c\u305f\u30ad\u30fc\u306f\u76f4\u3061\u306b\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u306f\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3057\u3001\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u306f\u5b9f\u884c\u6642\u306b\u306e\u307f\u7d44\u307f\u8fbc\u307f\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/11\/hostingsecuritydesk2439.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u5fa9\u5143\u3001\u304a\u3088\u3073\u56de\u5fa9\u529b<\/h2>\n<p>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u3001\u305d\u306e\u5fa9\u5143\u53ef\u80fd\u6027\u306b\u3088\u3063\u3066\u305d\u306e\u4fa1\u5024\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002\u79c1\u306f\u660e\u78ba\u306a RPO\/RTO \u76ee\u6a19\u3092\u5b9a\u7fa9\u3057\u3001\u5b9a\u671f\u7684\u306b\u5fa9\u5143\u3092\u30c6\u30b9\u30c8\u3057\u3001\u5c11\u306a\u304f\u3068\u3082 1 \u3064\u306e\u30b3\u30d4\u30fc\u3092\u30aa\u30d5\u30e9\u30a4\u30f3\u307e\u305f\u306f\u5909\u66f4\u4e0d\u53ef\u80fd\u306a\u72b6\u614b\u3067\u4fdd\u7ba1\u3057\u3066\u3044\u307e\u3059\u3002\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u6697\u53f7\u5316\u3057\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u672c\u756a\u74b0\u5883\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304b\u3089\u53b3\u5bc6\u306b\u5206\u96e2\u3057\u3066\u3001\u653b\u6483\u304c\u4e21\u65b9\u306e\u30ec\u30d9\u30eb\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u304a\u3088\u3073\u30a4\u30e1\u30fc\u30b8\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u3001\u304d\u3081\u7d30\u304b\u3044\u5fa9\u5143\u306e\u305f\u3081\u306b\u30d5\u30a1\u30a4\u30eb\u30d9\u30fc\u30b9\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3067\u88dc\u5b8c\u3057\u3066\u3044\u307e\u3059\u3002 \u518d\u8d77\u52d5\u8a08\u753b\u3092\u6587\u66f8\u5316\u3057\u3001\u969c\u5bb3\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3057\u3001\u30c7\u30fc\u30bf\u640d\u5931\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u3001\u8a2d\u5b9a\u30df\u30b9\u306b\u5099\u3048\u305f\u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u3092\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8a2d\u5b9a\u30df\u30b9\u304c\u6c38\u7d9a\u7684\u306a\u3082\u306e\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u3001\u8fc5\u901f\u306b\u6b63\u5e38\u306a\u72b6\u614b\u306b\u623b\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>IPv6 \u304a\u3088\u3073 DNS \u306b\u3088\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u516c\u958b\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u79c1\u306f IPv6 \u3092\u6b21\u306e\u3088\u3046\u306b\u4e00\u8cab\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u30b0\u30ed\u30fc\u30d0\u30eb IPv6 \u30a2\u30c9\u30ec\u30b9\u3092\u6240\u6709\u3057\u3066\u3044\u307e\u3059\u304c\u3001IPv4 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3060\u3051\u304c\u7ba1\u7406\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u79c1\u306f\u4e21\u65b9\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u540c\u3058\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u4f7f\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u30b9\u30bf\u30c3\u30af\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u7121\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002DNS \u3067\u306f\u3001\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3092\u907f\u3051\u3001\u30be\u30fc\u30f3\u3092\u30af\u30ea\u30fc\u30f3\u306b\u4fdd\u3061\u3001\u91cd\u8981\u306a\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u5236\u9650\u7684\u306a TTL \u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002 \u30be\u30fc\u30f3\u8ee2\u9001\u306f\u7121\u52b9\u5316\u3059\u308b\u304b\u3001\u8a31\u53ef\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u306b\u9650\u5b9a\u3057\u307e\u3059\u3002\u7ba1\u7406\u8005\u30a2\u30af\u30bb\u30b9\u306b\u306f\u547d\u540d\u898f\u5247\u3092\u4f7f\u7528\u3057\u3001\u4e0d\u5fc5\u8981\u306a\u53ef\u8996\u6027\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u89e3\u6c7a\u3092\u5236\u9650\u3057\u307e\u3059\u3002\u76e3\u67fb\u3067\u306f\u3001\u516c\u958b\u3055\u308c\u305f\u30ec\u30b3\u30fc\u30c9\u3092\u5b9f\u969b\u306e\u30b5\u30fc\u30d3\u30b9\u3068\u7167\u5408\u3057\u3001\u5fd8\u308c\u3089\u308c\u305f\u30a8\u30f3\u30c8\u30ea\u304c\u653b\u6483\u306e\u6a19\u7684\u3068\u306a\u308b\u3053\u3068\u3092\u9632\u304e\u307e\u3059\u3002.<\/p>\n\n<h2>WAF\u3001\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3001\u30dc\u30c3\u30c8\u7ba1\u7406<\/h2>\n<p>\u79c1\u306f\u3001\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30b5\u30fc\u30d3\u30b9\u306b\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\u3092\u8a2d\u7f6e\u3057\u3001\u305d\u3053\u3067 TLS \u30bf\u30fc\u30df\u30cd\u30fc\u30b7\u30e7\u30f3\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3001IP \u5236\u9650\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u30eb\u30fc\u30eb\u3092\u6301\u3064 WAF \u306f\u3001\u6b63\u5f53\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u59a8\u3052\u308b\u3053\u3068\u306a\u304f\u3001\u4e00\u822c\u7684\u306a\u653b\u6483\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u307e\u3059\u3002\u79c1\u306f\u300c\u30e2\u30cb\u30bf\u30fc\u306e\u307f\u300d\u304b\u3089\u958b\u59cb\u3057\u3001\u8aa4\u691c\u77e5\u3092\u8a55\u4fa1\u3057\u3066\u304b\u3089\u300c\u30d6\u30ed\u30c3\u30af\u300d\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002 \u30dc\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u660e\u78ba\u306a\u3057\u304d\u3044\u5024\u3092\u5b9a\u7fa9\u3057\u3001\u67d4\u8edf\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002200 \u3067\u306f\u306a\u304f 429\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u306f\u5fc5\u8981\u306a\u5834\u5408\u306b\u306e\u307f\u4f7f\u7528\u3057\u307e\u3059\u3002\u30ea\u30bd\u30fc\u30b9\u306e\u62d8\u675f\u306b\u3088\u308b DoS 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