{"id":477247,"date":"2023-08-09T09:09:43","date_gmt":"2023-08-09T09:09:43","guid":{"rendered":"https:\/\/oneproxy.pro\/wiki\/firewall\/"},"modified":"2023-09-05T11:14:22","modified_gmt":"2023-09-05T11:14:22","slug":"firewall","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/firewall\/","title":{"rendered":"\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb"},"content":{"rendered":"<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u91cd\u8981\u306a\u90e8\u5206\u3067\u3042\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u60aa\u610f\u306e\u3042\u308b\u6d3b\u52d5\u304b\u3089\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u4eee\u60f3\u30d0\u30ea\u30a2\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u9001\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u7cbe\u67fb\u3057\u3001\u4e8b\u524d\u306b\u8a2d\u5b9a\u3055\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u57fa\u6e96\u3092\u6e80\u305f\u3059\u30c7\u30fc\u30bf\u306e\u307f\u3092\u8a31\u53ef\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u9032\u5316: \u904e\u53bb\u3092\u632f\u308a\u8fd4\u308b<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u6982\u5ff5\u306f\u3001\u5efa\u7269\u5185\u3067\u306e\u706b\u707d\u306e\u5ef6\u713c\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u7269\u7406\u7684\u306a\u69cb\u9020\u306b\u7531\u6765\u3057\u3066\u3044\u307e\u3059\u3002\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5206\u91ce\u3067\u306f\u3001\u300c\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u300d\u3068\u3044\u3046\u7528\u8a9e\u306f\u30011980 \u5e74\u4ee3\u5f8c\u534a\u306b\u521d\u3081\u3066\u4f7f\u7528\u3055\u308c\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u307e\u305f\u306f\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u30b7\u30b9\u30c6\u30e0\u3092\u8868\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002\u6700\u521d\u306e\u30c7\u30b8\u30bf\u30eb \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u3092\u691c\u67fb\u3057\u3066\u4e00\u9023\u306e\u5b9a\u7fa9\u6e08\u307f\u30eb\u30fc\u30eb\u306b\u4e00\u81f4\u3057\u306a\u3044\u30d1\u30b1\u30c3\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3068\u3044\u3046\u57fa\u672c\u7684\u306a\u30ec\u30d9\u30eb\u3067\u52d5\u4f5c\u3059\u308b\u3001\u975e\u5e38\u306b\u57fa\u672c\u7684\u306a\u30d1\u30b1\u30c3\u30c8 \u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u3057\u305f\u3002<\/p>\n<p>\u3088\u308a\u8907\u96d1\u3067\u7d71\u5408\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u73fe\u4ee3\u7684\u306a\u6982\u5ff5\u306f\u30011988 \u5e74\u306e\u8ad6\u6587\u300c\u9069\u5207\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b5\u30fc\u30d3\u30b9 \u30e2\u30c7\u30eb\u306b\u5411\u3051\u3066\u300d\u3067 Jeff Mogul \u306b\u3088\u3063\u3066\u767a\u8868\u3055\u308c\u307e\u3057\u305f\u3002\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u9ad8\u5ea6\u5316\u3055\u308c\u3001\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb \u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30ec\u30d9\u30eb\u306e\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3001\u4fb5\u5165\u9632\u6b62\u30b7\u30b9\u30c6\u30e0\u306a\u3069\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u89e3\u5256: \u8868\u9762\u3092\u8d85\u3048\u3066<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u7d44\u7e54\u306e\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5168\u4f53\u306e\u63a5\u7d9a\u70b9\u3067\u52d5\u4f5c\u3057\u3001\u3059\u3079\u3066\u306e\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u9001\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30b9\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u3057\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u4e8b\u524d\u306b\u6c7a\u5b9a\u3055\u308c\u305f\u4e00\u9023\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30eb\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001\u3069\u306e\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u51fa\u5165\u308a\u3067\u304d\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u4e2d\u6838\u306b\u306f\u3001\u30eb\u30fc\u30eb\u3068\u3001\u4fe1\u983c\u3067\u304d\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u4fe1\u983c\u3067\u304d\u306a\u3044\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30ea\u30b9\u30c8\u3092\u683c\u7d0d\u3059\u308b\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u51fa\u5165\u308a\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30d1\u30b1\u30c3\u30c8\u306e\u9001\u4fe1\u5143\u3001\u9001\u4fe1\u5148\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u306a\u3069\u306e\u60c5\u5831\u3092\u30c6\u30fc\u30d6\u30eb\u3068\u30eb\u30fc\u30eb\u306b\u7167\u3089\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u304c\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u30a8\u30f3\u30c8\u30ea\u306b\u4e00\u81f4\u3059\u308b\u3068\u3001\u8a31\u53ef\u3084\u62d2\u5426\u306a\u3069\u306e\u5bfe\u5fdc\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u591a\u304f\u306e\u6700\u65b0\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u306f\u3001\u30c7\u30a3\u30fc\u30d7 \u30d1\u30b1\u30c3\u30c8 \u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3 (DPI) \u306a\u3069\u306e\u9ad8\u5ea6\u306a\u65b9\u6cd5\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u5185\u306e\u30c7\u30fc\u30bf\u3092\u691c\u67fb\u3057\u3066\u3001\u3055\u3089\u306b\u9ad8\u3044\u30ec\u30d9\u30eb\u306e\u5236\u5fa1\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u4e3b\u306a\u6a5f\u80fd\u306e\u8a73\u7d30<\/h2>\n<p>\u5805\u7262\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5b9a\u756a\u3068\u306a\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u642d\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u30d1\u30b1\u30c3\u30c8\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong>: \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u901a\u904e\u3059\u308b\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3092\u691c\u67fb\u3057\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u3044\u3066\u3001\u305d\u308c\u3089\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u901a\u904e\u3055\u305b\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3<\/strong>\u52d5\u7684\u30d1\u30b1\u30c3\u30c8 \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3068\u3082\u547c\u3070\u308c\u308b\u3053\u306e\u6a5f\u80fd\u306f\u3001\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3060\u3051\u3067\u306a\u304f\u901a\u4fe1\u30c1\u30e3\u30cd\u30eb\u306e\u72b6\u614b\u3082\u691c\u67fb\u3059\u308b\u3053\u3068\u3067\u3001\u30d1\u30b1\u30c3\u30c8 \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u3055\u3089\u306b\u4e00\u6b69\u9032\u3081\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d3\u30b9<\/strong>: \u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u304b\u3089\u5916\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u8981\u6c42\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u5909\u63db (NAT)<\/strong>\u3053\u308c\u306b\u3088\u308a\u3001\u30ed\u30fc\u30ab\u30eb \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u8907\u6570\u306e\u30c7\u30d0\u30a4\u30b9\u304c 1 \u3064\u306e\u30d1\u30d6\u30ea\u30c3\u30af IP \u30a2\u30c9\u30ec\u30b9\u3092\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u533f\u540d\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u3055\u3089\u306b\u5f37\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (VPN) \u30b5\u30dd\u30fc\u30c8<\/strong>: \u3053\u308c\u306b\u3088\u308a\u3001\u30ea\u30e2\u30fc\u30c8 \u30e6\u30fc\u30b6\u30fc\u306f\u5b89\u5168\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4fb5\u5165\u9632\u5fa1\u30b7\u30b9\u30c6\u30e0 (IPS)<\/strong>: \u6f5c\u5728\u7684\u306a\u8105\u5a01\u3092\u691c\u51fa\u3057\u3001\u8fc5\u901f\u306b\u5bfe\u5fdc\u3057\u3066\u8105\u5a01\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u7a2e\u985e\u3092\u8abf\u3079\u308b<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u306f\u3001\u305d\u306e\u52d5\u4f5c\u3001\u5b9f\u88c5\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u5834\u6240\u306b\u57fa\u3065\u3044\u3066\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u7a2e\u985e\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u7a2e\u985e<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30d1\u30b1\u30c3\u30c8\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/td>\n<td>\u6700\u3082\u53e4\u3044\u30bf\u30a4\u30d7\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u3042\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30ec\u30d9\u30eb\u3067\u52d5\u4f5c\u3057\u3001\u9001\u4fe1\u5143\/\u5b9b\u5148 IP\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb \u30de\u30eb\u30c1\u30ec\u30a4\u30e4\u30fc \u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3 (SMLI) \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/td>\n<td>\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u5f93\u6765\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u6280\u8853\u3068\u30c7\u30fc\u30bf\u691c\u67fb\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u3088\u308a\u9ad8\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30ec\u30d9\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d7\u30ed\u30ad\u30b7\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/td>\n<td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30ec\u30d9\u30eb \u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3068\u3082\u547c\u3070\u308c\u308b\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001OSI \u30e2\u30c7\u30eb\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d5\u30a3\u30eb\u30bf\u30fc\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (NGFW)<\/td>\n<td>\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u5f93\u6765\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u6a5f\u80fd\u3068\u30b5\u30fc\u30d3\u30b9\u54c1\u8cea (QoS) \u6a5f\u80fd\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3092\u7d71\u5408\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5c0e\u5165\u3068\u8ab2\u984c<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3 \u30b7\u30b9\u30c6\u30e0\u3001\u5225\u306e\u30c7\u30d0\u30a4\u30b9 (\u30eb\u30fc\u30bf\u30fc\u306a\u3069) \u5185\u306e\u30b5\u30fc\u30d3\u30b9\u3001\u307e\u305f\u306f\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306e\u30b5\u30fc\u30d3\u30b9\u3068\u3057\u3066\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5883\u754c\u306e\u4fdd\u8b77\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fdd\u8b77\u3001\u30c7\u30fc\u30bf \u30bb\u30f3\u30bf\u30fc\u306e\u4fdd\u8b77\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5c0e\u5165\u3068\u7ba1\u7406\u306b\u306f\u8ab2\u984c\u304c\u4f34\u3044\u307e\u3059\u3002\u65b0\u3057\u3044\u8105\u5a01\u306b\u5bfe\u6297\u3059\u308b\u306b\u306f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3092\u6700\u65b0\u306e\u72b6\u614b\u306b\u4fdd\u3064\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u8907\u6570\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30be\u30fc\u30f3\u306b\u308f\u305f\u3063\u3066\u3053\u308c\u3089\u306e\u30eb\u30fc\u30eb\u3092\u7ba1\u7406\u3059\u308b\u306e\u306f\u8907\u96d1\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5fc5\u8981\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u59a8\u3052\u305a\u306b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u304c\u52b9\u679c\u7684\u306b\u6a5f\u80fd\u3059\u308b\u3088\u3046\u306b\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u6b63\u3057\u304f\u69cb\u6210\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u8105\u5a01\u3092\u8fc5\u901f\u306b\u691c\u51fa\u3057\u3066\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u7d99\u7d9a\u7684\u306b\u76e3\u8996\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u985e\u4f3c\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u304c\u3001\u3088\u308a\u5f37\u529b\u306a\u9632\u5fa1\u306e\u305f\u3081\u306b\u4ed6\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u985e\u4f3c\u306e\u7528\u8a9e\u3068\u306e\u6bd4\u8f03\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4fb5\u5165\u9632\u5fa1\u30b7\u30b9\u30c6\u30e0 (IPS)<\/td>\n<td>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3057\u307e\u3059\u304c\u3001IPS \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u76e3\u8996\u3057\u3066\u60aa\u610f\u306e\u3042\u308b\u52d5\u4f5c\u3092\u691c\u51fa\u3057\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001IPS \u304c\u6a5f\u80fd\u3068\u3057\u3066\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u30bd\u30d5\u30c8<\/td>\n<td>\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u500b\u3005\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u60aa\u610f\u306e\u3042\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u304b\u3089\u4fdd\u8b77\u3057\u307e\u3059\u304c\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (VPN)<\/td>\n<td>VPN \u306f\u30ea\u30e2\u30fc\u30c8 \u30a2\u30af\u30bb\u30b9\u7528\u306e\u5b89\u5168\u306a\u63a5\u7d9a\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u306e\u9593\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002\u591a\u304f\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u306f VPN \u30b5\u30dd\u30fc\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u672a\u6765: \u65b0\u305f\u306a\u30c8\u30ec\u30f3\u30c9\u3068\u30c6\u30af\u30ce\u30ed\u30b8\u30fc<\/h2>\n<p>\u5c06\u6765\u7684\u306b\u306f\u3001\u4eba\u5de5\u77e5\u80fd (AI) \u3068\u6a5f\u68b0\u5b66\u7fd2 (ML) \u306e\u4f7f\u7528\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3066\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u304c\u9032\u5316\u3059\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306f\u3001\u8105\u5a01\u306e\u691c\u51fa\u3068\u5bfe\u5fdc\u3092\u81ea\u52d5\u5316\u3057\u3001\u53cd\u5fdc\u6642\u9593\u3092\u5927\u5e45\u306b\u77ed\u7e2e\u3057\u3001\u7cbe\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u4f01\u696d\u304c\u30af\u30e9\u30a6\u30c9\u306b\u79fb\u884c\u3059\u308b\u50be\u5411\u306b\u3042\u308b\u3053\u3068\u304b\u3089\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3082\u30af\u30e9\u30a6\u30c9\u30cd\u30a4\u30c6\u30a3\u30d6 \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3078\u3068\u79fb\u884c\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u9032\u6b69\u306b\u306f\u3001\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u3068\u30b3\u30f3\u30c6\u30ca\u3092\u4fdd\u8b77\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30ec\u30d9\u30eb\u3067\u304d\u3081\u7d30\u304b\u306a\u5236\u5fa1\u3092\u63d0\u4f9b\u3067\u304d\u308b\u5206\u6563\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u63a5\u7d9a<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u9023\u643a\u3057\u3066\u968e\u5c64\u5316\u3055\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u533f\u540d\u6027\u3068\u30b3\u30f3\u30c6\u30f3\u30c4 \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u63d0\u4f9b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30eb\u30fc\u30eb\u306b\u57fa\u3065\u3044\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u5099\u3048\u305f\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u9020\u3092\u5916\u90e8\u304b\u3089\u96a0\u3057\u305f\u308a\u3001\u9001\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3057\u305f\u308a\u3059\u308b\u306a\u3069\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u5229\u70b9\u304c\u3055\u3089\u306b\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001OneProxy \u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u9023\u643a\u3057\u3066\u52d5\u4f5c\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u51fa\u5165\u308a\u3059\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u3068\u5236\u5fa1\u306e\u5c64\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/firewalls\/what-is-a-firewall.html\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u306f? \u2013 CISCO<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Firewall_(computing)\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0) \u2013 Wikipedia<\/a><\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.com\/cyberpedia\/what-is-a-firewall\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b? \u2013 Palo Alto Networks<\/a><\/li>\n<li><a href=\"https:\/\/www.kaspersky.com\/resource-center\/definitions\/what-is-firewall\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u306f\u4f55\u304b\uff1f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\uff1f \u2013 \u30ab\u30b9\u30da\u30eb\u30b9\u30ad\u30fc<\/a><\/li>\n<li><a href=\"https:\/\/us-cert.cisa.gov\/ncas\/tips\/ST04-004\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u7406\u89e3\u3059\u308b \u2013 US-CERT<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468411,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477247","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Understanding Firewalls: The Core Component of Network Security<\/mark>","faq_items":[{"question":"What is a firewall?","answer":"<p>A firewall is a system that prevents unauthorized access to or from a private network. It acts as a virtual barrier, inspecting all incoming and outgoing traffic and permitting only data that meets predetermined security criteria.<\/p>"},{"question":"When was the concept of firewall first used in cybersecurity?","answer":"<p>The term \"firewall\" was first used in the realm of cybersecurity in the late 1980s to describe a system that prevented unauthorized access to or from a private network.<\/p>"},{"question":"How does a firewall work?","answer":"<p>A firewall operates by using a set of predetermined security rules to decide which data packets can enter or exit the network. When data attempts to enter or leave a network, the firewall checks the packet's information against its tables and rules. If a packet matches an entry in the table, the corresponding action is taken, such as allow or deny.<\/p>"},{"question":"What are some key features of a firewall?","answer":"<p>Key features of a firewall include packet filtering, stateful inspection, proxy service, Network Address Translation (NAT), Virtual Private Network (VPN) support, and Intrusion Prevention Systems (IPS).<\/p>"},{"question":"What are the different types of firewalls?","answer":"<p>Different types of firewalls include packet-filtering firewalls, Stateful Multilayer Inspection (SMLI) Firewalls, Proxy Firewalls, and Next-Generation Firewalls (NGFWs).<\/p>"},{"question":"What are some challenges in deploying and managing firewalls?","answer":"<p>Some challenges in deploying and managing firewalls include keeping firewall rules updated to counter new threats, managing these rules across multiple firewalls and network zones, ensuring firewalls are configured correctly, and continuous monitoring to detect and respond to threats promptly.<\/p>"},{"question":"How do firewalls compare with other network security measures?","answer":"<p>Firewalls control access to and from networks and are often used in conjunction with other security measures like Intrusion Prevention Systems (IPS) that monitor network activity for malicious behavior, Antivirus software that protects individual systems from malicious software, and Virtual Private Networks (VPN) that provide secure connections for remote access.<\/p>"},{"question":"How are firewalls likely to evolve in the future?","answer":"<p>In the future, firewalls are likely to increasingly use artificial intelligence (AI) and machine learning (ML) to automate threat detection and response. Firewalls are also moving towards cloud-native architectures to secure microservices and containers, and provide granular controls at the application level.<\/p>"},{"question":"How do proxy servers work with firewalls?","answer":"<p>Proxy servers and firewalls can work together to provide layered security. A proxy server acts as an intermediary for requests and can provide additional security benefits like hiding your internal network structure from the external world and filtering outgoing traffic for added security.<\/p>"},{"question":"Where can I find more information about firewalls?","answer":"<p>For more detailed information about firewalls, you can visit resources like CISCO, Wikipedia, Palo Alto Networks, Kaspersky, and US-CERT.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477247","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\/477247\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/468411"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477247"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}