{"id":478844,"date":"2023-08-09T09:39:01","date_gmt":"2023-08-09T09:39:01","guid":{"rendered":""},"modified":"2023-09-05T11:17:40","modified_gmt":"2023-09-05T11:17:40","slug":"screened-subnet-firewall","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/screened-subnet-firewall\/","title":{"rendered":"\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30d6\u30cd\u30c3\u30c8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb"},"content":{"rendered":"<h2>\u5c0e\u5165<\/h2>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5206\u91ce\u3067\u306f\u3001 <strong>\u30b9\u30af\u30ea\u30fc\u30f3\u30c9\u30b5\u30d6\u30cd\u30c3\u30c8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/strong> \u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u30c7\u30b8\u30bf\u30eb \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u5916\u90e8\u306e\u8105\u5a01\u304b\u3089\u4fdd\u8b77\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u30de\u30a4\u30eb\u30b9\u30c8\u30fc\u30f3\u3067\u3059\u3002\u3053\u306e\u9769\u65b0\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u300c\u975e\u6b66\u88c5\u5730\u5e2f (DMZ) \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u300d\u3068\u3082\u547c\u3070\u308c\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306b\u5bfe\u3059\u308b\u5f37\u529b\u306a\u9632\u5fa1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u8907\u96d1\u3055\u3001\u6b74\u53f2\u7684\u30eb\u30fc\u30c4\u3001\u904b\u7528\u30e1\u30ab\u30cb\u30ba\u30e0\u3001\u4e3b\u306a\u6a5f\u80fd\u3001\u30bf\u30a4\u30d7\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u304a\u3088\u3073\u5c06\u6765\u306e\u958b\u767a\u306e\u53ef\u80fd\u6027\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u8d77\u6e90\u3068\u521d\u671f\u306e\u8a00\u53ca<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u6982\u5ff5\u306f\u3001\u5185\u90e8\u306e\u4fe1\u983c\u3067\u304d\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u5916\u90e8\u306e\u4fe1\u983c\u3067\u304d\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (\u901a\u5e38\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8) \u306e\u9593\u306b\u5206\u96e2\u3055\u308c\u305f\u4e2d\u9593\u30be\u30fc\u30f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u6700\u521d\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u300c\u975e\u6b66\u88c5\u5730\u5e2f\u300d(DMZ) \u3068\u3044\u3046\u7528\u8a9e\u306f\u30012 \u3064\u306e\u5bfe\u7acb\u3059\u308b\u52e2\u529b\u9593\u306e\u4e2d\u7acb\u7684\u306a\u30d0\u30c3\u30d5\u30a1\u9818\u57df\u3092\u610f\u5473\u3057\u3001\u3053\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u4fdd\u8b77\u7279\u6027\u3068\u985e\u4f3c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u8a73\u7d30\u306a\u6d1e\u5bdf<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u5f93\u6765\u306e\u5883\u754c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u9032\u5316\u5f62\u3067\u3042\u308a\u3001\u30d1\u30b1\u30c3\u30c8 \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u6280\u8853\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5305\u62ec\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u305d\u306e\u5185\u90e8\u69cb\u9020\u306f\u30013 \u5c64\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u5916\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/strong>: \u3053\u308c\u306f\u3001\u6f5c\u5728\u7684\u306a\u8105\u5a01\u306e\u767a\u751f\u6e90\u3068\u306a\u308b\u4fe1\u983c\u3067\u304d\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (\u901a\u5e38\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8) \u3067\u3059\u3002<\/li>\n<li><strong>DMZ \u307e\u305f\u306f\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30d6\u30cd\u30c3\u30c8<\/strong>: \u79fb\u884c\u30b9\u30da\u30fc\u30b9\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u3053\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u306b\u306f\u3001\u5916\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304c\u3001\u307e\u3060\u4fe1\u983c\u3067\u304d\u306a\u3044\u3068\u898b\u306a\u3055\u308c\u308b\u30b5\u30fc\u30d0\u30fc (Web \u30b5\u30fc\u30d0\u30fc\u3001\u96fb\u5b50\u30e1\u30fc\u30eb \u30b5\u30fc\u30d0\u30fc\u306a\u3069) \u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/strong>: \u3053\u308c\u306f\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3068\u91cd\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u542b\u3080\u4fe1\u983c\u3067\u304d\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u3059\u3002<\/li>\n<\/ol>\n<h2>\u904b\u7528\u30e1\u30ab\u30cb\u30ba\u30e0<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u3053\u308c\u3089\u306e\u5c64\u9593\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6d41\u308c\u3092\u614e\u91cd\u306b\u5236\u5fa1\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u6b21\u306e 2 \u3064\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u5916\u90e8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/strong>: \u4fe1\u983c\u3067\u304d\u306a\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089 DMZ \u3078\u306e\u7740\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u307e\u3059\u3002\u627f\u8a8d\u3055\u308c\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u307f\u304c DMZ \u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u5185\u90e8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/strong>: DMZ \u304b\u3089\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5236\u5fa1\u3057\u3001\u5b89\u5168\u3067\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306e\u307f\u304c\u4fe1\u983c\u3067\u304d\u308b\u30be\u30fc\u30f3\u306b\u5165\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u3053\u306e\u4e8c\u91cd\u5c64\u306e\u9632\u5fa1\u306b\u3088\u308a\u3001\u653b\u6483\u5bfe\u8c61\u9818\u57df\u304c\u5927\u5e45\u306b\u7e2e\u5c0f\u3055\u308c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u306b\u3088\u308b\u6f5c\u5728\u7684\u306a\u640d\u5bb3\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h2>\u4e3b\u306a\u7279\u9577<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4ea4\u901a\u5206\u96e2<\/strong>: \u7570\u306a\u308b\u30bf\u30a4\u30d7\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u660e\u78ba\u306b\u5206\u96e2\u3057\u3001\u6a5f\u5bc6\u30ea\u30bd\u30fc\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316<\/strong>: \u5f93\u6765\u306e\u5883\u754c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u8d85\u3048\u305f\u8ffd\u52a0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c64\u3092\u63d0\u4f9b\u3057\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u76f4\u63a5\u653b\u6483\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u304d\u3081\u7d30\u304b\u306a\u5236\u5fa1<\/strong>: \u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u9001\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7d30\u304b\u304f\u5236\u5fa1\u3057\u3001\u6b63\u78ba\u306a\u30a2\u30af\u30bb\u30b9\u7ba1\u7406\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong>: \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3092\u5206\u6790\u3057\u3001\u7591\u308f\u3057\u3044\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3084\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u3092\u8b58\u5225\u3057\u3066\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/strong>: \u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4f53\u5236\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u306a\u304f\u3001DMZ \u3078\u306e\u65b0\u3057\u3044\u30b5\u30fc\u30d0\u30fc\u306e\u8ffd\u52a0\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u30b9\u30af\u30ea\u30fc\u30f3\u30c9\u30b5\u30d6\u30cd\u30c3\u30c8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u7a2e\u985e<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5358\u4e00\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30d6\u30cd\u30c3\u30c8<\/td>\n<td>\u516c\u958b\u30b5\u30fc\u30d3\u30b9\u3092\u30db\u30b9\u30c8\u3059\u308b\u305f\u3081\u306b\u5358\u4e00\u306e DMZ \u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4e8c\u91cd\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30d6\u30cd\u30c3\u30c8<\/td>\n<td>\u8ffd\u52a0\u306e DMZ \u30ec\u30a4\u30e4\u30fc\u3092\u5c0e\u5165\u3057\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3055\u3089\u306b\u5206\u96e2\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30de\u30eb\u30c1\u30db\u30fc\u30e0 \u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8<\/td>\n<td>\u67d4\u8edf\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5fdc\u7528\u3068\u8ab2\u984c<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u5fdc\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30a6\u30a7\u30d6\u30db\u30b9\u30c6\u30a3\u30f3\u30b0<\/strong>: Web \u30b5\u30fc\u30d0\u30fc\u3092\u5916\u90e8\u304b\u3089\u306e\u76f4\u63a5\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc<\/strong>: \u96fb\u5b50\u30e1\u30fc\u30eb \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u304b\u3089\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u96fb\u5b50\u5546\u53d6\u5f15<\/strong>: \u5b89\u5168\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u53d6\u5f15\u3068\u9867\u5ba2\u30c7\u30fc\u30bf\u306e\u4fdd\u8b77\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u8ab2\u984c\u3068\u3057\u3066\u306f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u9593\u306e\u540c\u671f\u306e\u7dad\u6301\u3001\u8907\u96d1\u306a\u30eb\u30fc\u30eb \u30bb\u30c3\u30c8\u306e\u7ba1\u7406\u3001\u5358\u4e00\u969c\u5bb3\u70b9\u306e\u9632\u6b62\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u5c06\u6765\u306e\u5c55\u671b<\/h2>\n<p>\u6280\u8853\u306e\u9032\u5316\u306b\u4f34\u3044\u3001\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u65b0\u305f\u306a\u8105\u5a01\u306b\u9069\u5fdc\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u8105\u5a01\u691c\u51fa\u3068\u52d5\u7684\u306a\u30eb\u30fc\u30eb\u8abf\u6574\u306e\u305f\u3081\u306e\u6a5f\u68b0\u5b66\u7fd2\u306e\u7d71\u5408\u306f\u6709\u671b\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u4eee\u60f3\u5316\u3068\u30af\u30e9\u30a6\u30c9\u6280\u8853\u306e\u9032\u6b69\u306f\u3001\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5c55\u958b\u3068\u62e1\u5f35\u6027\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30d6\u30cd\u30c3\u30c8\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u88dc\u5b8c\u3057\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7\u306f\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u5f37\u5316\u3057\u3001\u30c7\u30fc\u30bf\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3092\u9ad8\u901f\u5316\u3057\u3001DMZ \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8ffd\u52a0\u30ec\u30a4\u30e4\u30fc\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30bd\u30fc\u30b9<\/h2>\n<p>\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u6982\u5ff5\u3068\u305d\u306e\u5b9f\u88c5\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/firewalls\/what-is-a-firewall.html\" target=\"_new\" rel=\"noopener nofollow\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3: \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u6982\u8981<\/a><\/li>\n<li><a href=\"https:\/\/csrc.nist.gov\/publications\/detail\/sp\/800-41\/rev-1\/final\" target=\"_new\" rel=\"noopener nofollow\">NIST \u7279\u5225\u520a\u884c\u7269 800-41 Rev. 1: \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30dd\u30ea\u30b7\u30fc\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Demilitarized_zone_(computing)\" target=\"_new\" rel=\"noopener nofollow\">\u975e\u6b66\u88c5\u5730\u5e2f\uff08\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff09<\/a><\/li>\n<\/ul>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u30b9\u30af\u30ea\u30fc\u30f3 \u30b5\u30d6\u30cd\u30c3\u30c8 \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u5e38\u306b\u9032\u5316\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u72b6\u6cc1\u3092\u5b9f\u8a3c\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u5805\u7262\u306a\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3001\u5f37\u5316\u3055\u308c\u305f\u6a5f\u80fd\u3001\u9069\u5fdc\u6027\u306b\u3088\u308a\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u5e38\u306b\u5b58\u5728\u3059\u308b\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u8105\u5a01\u304b\u3089\u30c7\u30b8\u30bf\u30eb\u8cc7\u7523\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u9769\u65b0\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7d44\u7e54\u306f\u60aa\u610f\u306e\u3042\u308b\u4fb5\u5165\u306b\u5bfe\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5f37\u5316\u3057\u3001\u6a5f\u5bc6\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u6a5f\u5bc6\u6027\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>","protected":false},"featured_media":478845,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478844","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Screened Subnet Firewall: Safeguarding Networks with Advanced Security<\/mark>","faq_items":[{"question":"What is a Screened Subnet Firewall?","answer":"<p>A Screened Subnet Firewall is a network security architecture that creates a buffer zone between internal trusted networks and external untrusted networks, such as the internet. It employs a two-firewall setup to regulate traffic flow and provide enhanced security.<\/p>"},{"question":"How does a Screened Subnet Firewall work?","answer":"<p>A Screened Subnet Firewall operates with a three-tier structure: an external network (internet), a DMZ or screened subnet (transitional space), and an internal network (trusted zone). It uses two firewalls to filter incoming and outgoing traffic, ensuring only authorized data passes through.<\/p>"},{"question":"What are the key features of a Screened Subnet Firewall?","answer":"<p>Key features of a Screened Subnet Firewall include traffic segregation, advanced security layers, granular control over network traffic, application filtering, and scalability for accommodating new servers without compromising security.<\/p>"},{"question":"What are the types of Screened Subnet Firewalls?","answer":"<p>There are different types of Screened Subnet Firewalls, including:<\/p><ul><li>Single Screened Subnet: Uses one DMZ for public-facing services.<\/li><li>Double Screened Subnet: Adds an extra DMZ layer for increased internal network isolation.<\/li><li>Multi-Homed Screened Subnet: Utilizes multiple network interfaces for enhanced flexibility and security.<\/li><\/ul>"},{"question":"Where can Screened Subnet Firewalls be applied?","answer":"<p>Screened Subnet Firewalls are commonly used in scenarios such as web hosting, email servers, and e-commerce platforms. They protect critical servers and services from direct external attacks while enabling secure data transactions.<\/p>"},{"question":"What challenges can arise with Screened Subnet Firewalls?","answer":"<p>Challenges include maintaining firewall synchronization, managing complex rule sets, and preventing single points of failure. Ensuring consistent security policies and configurations across firewalls can be demanding.<\/p>"},{"question":"How might Screened Subnet Firewalls evolve in the future?","answer":"<p>As technology advances, Screened Subnet Firewalls may integrate machine learning for real-time threat detection and adaptive rule adjustments. The evolution of virtualization and cloud technology will also impact their deployment and scalability.<\/p>"},{"question":"How do proxy servers relate to Screened Subnet Firewalls?","answer":"<p>Proxy servers complement Screened Subnet Firewalls by acting as intermediaries between clients and servers. They enhance privacy, cache data for quicker access, and can offer an additional layer of security within the DMZ.<\/p>"},{"question":"Where can I learn more about Screened Subnet Firewalls?","answer":"<p>For more information about Screened Subnet Firewalls and related concepts, you can explore the following resources:<\/p><ul><li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/firewalls\/what-is-a-firewall.html\" target=\"_new\">Network Security: An Introduction to Firewalls<\/a><\/li><li><a href=\"https:\/\/csrc.nist.gov\/publications\/detail\/sp\/800-41\/rev-1\/final\" target=\"_new\">NIST Special Publication 800-41 Rev. 1: Guidelines on Firewalls and Firewall Policy<\/a><\/li><li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Demilitarized_zone_(computing)\" target=\"_new\">Demilitarized Zone (computing) - Wikipedia<\/a><\/li><\/ul>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478844\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/478845"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=478844"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}