{"id":477805,"date":"2023-08-09T09:20:41","date_gmt":"2023-08-09T09:20:41","guid":{"rendered":""},"modified":"2023-09-05T11:15:27","modified_gmt":"2023-09-05T11:15:27","slug":"layer-4-switch","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/layer-4-switch\/","title":{"rendered":"\u30ec\u30a4\u30e44\u30b9\u30a4\u30c3\u30c1"},"content":{"rendered":"<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001OSI (Open Systems Interconnection) \u30e2\u30c7\u30eb\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64 (\u30ec\u30a4\u30e4 4) \u3067\u52d5\u4f5c\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u4e3b\u306b\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u756a\u53f7\u3068\u5b9b\u5148\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u4f7f\u7528\u3057\u3066\u3001\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf 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\u5e74\u4ee3\u521d\u982d\u306e\u7814\u7a76\u8ad6\u6587\u3084\u6280\u8853\u7684\u306a\u8b70\u8ad6\u306b\u9061\u308a\u3001\u305d\u3053\u3067\u305d\u306e\u3088\u3046\u306a\u30c7\u30d0\u30a4\u30b9\u306e\u6f5c\u5728\u7684\u306a\u5229\u70b9\u304c\u8abf\u67fb\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30ec\u30a4\u30e44\u30b9\u30a4\u30c3\u30c1\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001TCP (\u4f1d\u9001\u5236\u5fa1\u30d7\u30ed\u30c8\u30b3\u30eb) \u304a\u3088\u3073 UDP (\u30e6\u30fc\u30b6\u30fc \u30c7\u30fc\u30bf\u30b0\u30e9\u30e0 \u30d7\u30ed\u30c8\u30b3\u30eb) \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u542b\u3080\u3001OSI \u30e2\u30c7\u30eb\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3067\u30c7\u30fc\u30bf \u30d5\u30ed\u30fc\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u69cb\u7bc9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e0b\u4f4d\u5c64\u3067\u52d5\u4f5c\u3057\u3001\u305d\u308c\u305e\u308c MAC \u30a2\u30c9\u30ec\u30b9\u3068 IP \u30a2\u30c9\u30ec\u30b9\u306b\u91cd\u70b9\u3092\u7f6e\u304f\u30ec\u30a4\u30e4\u30fc 2 \u30b9\u30a4\u30c3\u30c1 (\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8 \u30b9\u30a4\u30c3\u30c1) \u3084\u30ec\u30a4\u30e4\u30fc 3 \u30b9\u30a4\u30c3\u30c1 (IP \u30eb\u30fc\u30bf\u30fc) \u3068\u306f\u7570\u306a\u308a\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u30c7\u30fc\u30bf\u3092\u8a73\u7d30\u306b\u8abf\u3079\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u5185\u90e8\u69cb\u9020: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u53d7\u4fe1\u30d1\u30b1\u30c3\u30c8\u306e\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u8abf\u3079\u3066\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u756a\u53f7\u3068\u5b9b\u5148\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u8b58\u5225\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u3001\u30b9\u30a4\u30c3\u30c1\u306f\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u6c7a\u5b9a\u3092\u884c\u3044\u3001\u30d1\u30b1\u30c3\u30c8\u3092\u9069\u5207\u306a\u5b9b\u5148\u306b\u8ee2\u9001\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u307e\u305f\u306f\u30d7\u30ed\u30ad\u30b7 \u30ce\u30fc\u30c9\u306b\u5747\u7b49\u306b\u5206\u6563\u3055\u308c\u3001\u5fdc\u7b54\u6642\u9593\u3068\u30ea\u30bd\u30fc\u30b9\u306e\u4f7f\u7528\u7387\u304c\u6700\u9069\u5316\u3055\u308c\u308b\u305f\u3081\u3001\u52b9\u7387\u7684\u306a\u8ca0\u8377\u5206\u6563\u306b\u3068\u3063\u3066\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h2>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u4e3b\u306a\u6a5f\u80fd\u306e\u5206\u6790<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u4e3b\u306a\u6a5f\u80fd\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u4e3b\u306a\u6a5f\u80fd\u306e 1 \u3064\u306f\u3001\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u307e\u305f\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9 \u30ea\u30bd\u30fc\u30b9\u306b\u5747\u7b49\u306b\u5206\u6563\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u30d0\u30e9\u30f3\u30b9\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377\u304c\u9632\u6b62\u3055\u308c\u3001\u9ad8\u53ef\u7528\u6027\u3068\u5fdc\u7b54\u6642\u9593\u306e\u5411\u4e0a\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6c38\u7d9a\u6027<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001IP \u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3084 Cookie \u30d9\u30fc\u30b9\u306e\u6c38\u7d9a\u6027\u306a\u3069\u306e\u6280\u8853\u3092\u4f7f\u7528\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6c38\u7d9a\u6027\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u3059\u3079\u3066\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u540c\u3058\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc \u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6574\u5408\u6027\u304c\u7dad\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d8\u30eb\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9 \u30b5\u30fc\u30d0\u30fc\u3067\u30d8\u30eb\u30b9 \u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u884c\u3057\u3001\u6b63\u5e38\u306a\u30b5\u30fc\u30d0\u30fc\u306e\u307f\u304c\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304c\u5fdc\u7b54\u3057\u306a\u304f\u306a\u3063\u305f\u5834\u5408\u3001\u30b9\u30a4\u30c3\u30c1\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6b63\u5e38\u306a\u30b5\u30fc\u30d0\u30fc\u306b\u81ea\u52d5\u7684\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b89\u5168<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u306b\u57fa\u3065\u3044\u3066\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d6\u30ed\u30c3\u30af\u307e\u305f\u306f\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u57fa\u672c\u7684\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u3057\u3066\u6a5f\u80fd\u3067\u304d\u307e\u3059\u3002\u5c02\u7528\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u307b\u3069\u6d17\u7df4\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u8ffd\u52a0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c64\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306e\u7a2e\u985e<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306b\u306f\u3001\u4e3b\u306b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2 \u30d9\u30fc\u30b9\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30d9\u30fc\u30b9\u306e 2 \u3064\u306e\u30bf\u30a4\u30d7\u304c\u3042\u308a\u307e\u3059\u3002\u4e21\u8005\u306e\u6bd4\u8f03\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u30bf\u30a4\u30d7<\/strong><\/th>\n<th><strong>\u5229\u70b9<\/strong><\/th>\n<th><strong>\u77ed\u6240<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30d9\u30fc\u30b9<\/td>\n<td>\u2013 \u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u62e1\u5f35\u6027<\/td>\n<td>\u2013 \u9ad8\u4fa1\u3067\u67d4\u8edf\u6027\u306b\u6b20\u3051\u308b<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2013 \u91cd\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u8ca0\u8377\u5411\u3051\u306b\u6700\u9069\u5316<\/td>\n<td>\u2013 \u9650\u3089\u308c\u305f\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2013 \u5c02\u7528\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u5185\u8535<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30d9\u30fc\u30b9<\/td>\n<td>\u2013 \u8cbb\u7528\u5bfe\u52b9\u679c\u304c\u9ad8\u304f\u3001\u67d4\u8edf\u6027\u304c\u9ad8\u3044<\/td>\n<td>\u2013 \u9ad8\u8ca0\u8377\u306b\u5bfe\u3059\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5236\u9650<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2013 \u5c0e\u5165\u3068\u8a2d\u5b9a\u304c\u7c21\u5358<\/td>\n<td>\u2013 \u3088\u308a\u591a\u304f\u306e CPU \u30ea\u30bd\u30fc\u30b9\u304c\u5fc5\u8981<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td>\u2013 \u5b9a\u671f\u7684\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3068\u6a5f\u80fd<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30ec\u30a4\u30e44\u30b9\u30a4\u30c3\u30c1\u306e\u4f7f\u3044\u65b9\u3068\u4f7f\u7528\u4e0a\u306e\u8ab2\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u901a\u5e38\u3001\u6b21\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u5206\u6563<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8981\u6c42\u3092\u8907\u6570\u306e\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u5206\u6563\u3059\u308b\u305f\u3081\u306b\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u3088\u308a\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u5197\u9577\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8ca0\u8377\u5206\u6563<\/strong>: \u3053\u308c\u3089\u306f\u3001\u8907\u6570\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30b5\u30fc\u30d0\u30fc\u9593\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u3068\u308a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u306e\u5fdc\u7b54\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b5\u30fc\u30d0\u30fc\u30d5\u30a1\u30fc\u30e0\u306e\u8ca0\u8377\u5206\u6563<\/strong>: \u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3067\u306f\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u304c\u30b5\u30fc\u30d0\u30fc\u306e\u30b0\u30eb\u30fc\u30d7\u9593\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5747\u7b49\u306b\u5206\u6563\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b0\u30ed\u30fc\u30d0\u30eb\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u5206\u6563<\/strong>: \u5730\u7406\u7684\u306b\u5206\u6563\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u5834\u5408\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6700\u3082\u8fd1\u3044\u30b5\u30fc\u30d0\u30fc\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u3001\u4e16\u754c\u4e2d\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u5fdc\u7b54\u6642\u9593\u3092\u6700\u9069\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u8ab2\u984c\u3068\u89e3\u6c7a\u7b56:<\/p>\n<ul>\n<li>\n<p><strong>\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377<\/strong>: 1 \u3064\u4ee5\u4e0a\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u904e\u8ca0\u8377\u306b\u306a\u3063\u305f\u5834\u5408\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8ca0\u8377\u306e\u4f4e\u3044\u30b5\u30fc\u30d0\u30fc\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3057\u3001\u6700\u9069\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6c38\u7d9a\u6027<\/strong>: \u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6c38\u7d9a\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u306f\u3001\u7279\u306b\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5834\u5408\u3001\u56f0\u96e3\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u9069\u5207\u306a\u69cb\u6210\u3068 Cookie \u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u3088\u308a\u3001\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>\u5b66\u671f<\/strong><\/th>\n<th><strong>\u8aac\u660e<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30ec\u30a4\u30e44\u30b9\u30a4\u30c3\u30c1<\/td>\n<td>OSI \u30e2\u30c7\u30eb\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64 (\u30ec\u30a4\u30e4\u30fc 4) \u3067\u52d5\u4f5c\u3057\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u306b\u57fa\u3065\u3044\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30ec\u30a4\u30e42\u30b9\u30a4\u30c3\u30c1<\/td>\n<td>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b MAC \u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001OSI \u30e2\u30c7\u30eb\u306e\u30c7\u30fc\u30bf \u30ea\u30f3\u30af\u5c64 (\u30ec\u30a4\u30e4\u30fc 2) \u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30ec\u30a4\u30e43\u30b9\u30a4\u30c3\u30c1<\/td>\n<td>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b IP \u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001OSI \u30e2\u30c7\u30eb\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64 (\u5c64 3) \u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/td>\n<td>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u9593\u306e\u4ef2\u4ecb\u8005\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u5fdc\u7b54\u3092\u8ee2\u9001\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5<\/td>\n<td>\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5206\u6563\u3057\u3066\u3001\u904e\u8ca0\u8377\u3092\u9632\u304e\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30ec\u30a4\u30e44\u30b9\u30a4\u30c3\u30c1\u306e\u5c06\u6765\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u306b\u3064\u308c\u3066\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306b\u306f\u3088\u308a\u9ad8\u5ea6\u306a\u6a5f\u80fd\u304c\u7d44\u307f\u8fbc\u307e\u308c\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5c06\u6765\u306e\u5c55\u671b\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a<\/strong>: \u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u65b0\u305f\u306a\u8105\u5a01\u3084\u653b\u6483\u306b\u52b9\u679c\u7684\u306b\u5bfe\u6297\u3059\u308b\u305f\u3081\u306b\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3092\u7d71\u5408\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9ad8\u5ea6\u306a\u8ca0\u8377\u5206\u6563\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/strong>\uff1a\u5c06\u6765\u306e\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u3067\u306f\u3001\u3088\u308a\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u3067\u52d5\u7684\u306a\u8ca0\u8377\u5206\u6563\u3092\u5b9f\u73fe\u3059\u308b AI \u4e3b\u5c0e\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u63a1\u7528\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>IPv6\u306e\u30b5\u30dd\u30fc\u30c8<\/strong>: IPv6 \u306e\u63a1\u7528\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3066\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u5b8c\u5168\u306a\u4e92\u63db\u6027\u3068\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u7d71\u5408\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3001\u307e\u305f\u306f\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306b\u95a2\u9023\u4ed8\u3051\u308b\u65b9\u6cd5<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u5bc6\u63a5\u306b\u95a2\u4fc2\u3057\u3066\u3044\u307e\u3059\u3002\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u306f\u8ca0\u8377\u5206\u6563\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5f37\u5316\u3057\u3001\u8907\u6570\u306e\u30d7\u30ed\u30ad\u30b7 \u30ce\u30fc\u30c9\u9593\u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8981\u6c42\u3092\u52b9\u7387\u7684\u306b\u5206\u6563\u3057\u307e\u3059\u3002\u3053\u306e\u8ca0\u8377\u5206\u6563\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u53ef\u7528\u6027\u3092\u7dad\u6301\u3057\u3001\u5fdc\u7b54\u6642\u9593\u3092\u6539\u5584\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377\u3092\u9632\u3050\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30ec\u30a4\u30e4 4 \u30b9\u30a4\u30c3\u30c1\u3068\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\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\/td\/docs\/ios-xml\/ios\/ipapp_fhrp\/configuration\/xe-16\/fhp-xe-16-book\/cf-fpapp-xe.html\" target=\"_new\" rel=\"noopener nofollow\">Cisco \u2013 \u30ed\u30fc\u30c9 \u30d0\u30e9\u30f3\u30b7\u30f3\u30b0\u306b\u3064\u3044\u3066<\/a><\/li>\n<li><a href=\"https:\/\/www.f5.com\/services\/resources\/white-papers\/load-balancing-101-nuts-and-bolts\" target=\"_new\" rel=\"noopener nofollow\">F5 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u2013 \u30ed\u30fc\u30c9 \u30d0\u30e9\u30f3\u30b7\u30f3\u30b0 101<\/a><\/li>\n<li><a href=\"https:\/\/www.radware.com\/resources\/application-delivery-guide\/\" target=\"_new\" rel=\"noopener nofollow\">\u30e9\u30c9\u30a6\u30a7\u30a2 \u2013 ADC \u30ac\u30a4\u30c9<\/a><\/li>\n<\/ol>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3084\u305d\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u52b9\u7387\u3001\u4fe1\u983c\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b9\u30a4\u30c3\u30c1\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u306b\u5206\u6563\u3057\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u6c38\u7d9a\u6027\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30fc\u30e0\u30ec\u30b9\u3067\u5b89\u5168\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u904b\u7528\u306b\u8ca2\u732e\u3057\u307e\u3059\u3002\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u9032\u6b69\u306b\u4f34\u3044\u3001\u30ec\u30a4\u30e4\u30fc 4 \u30b9\u30a4\u30c3\u30c1\u306f\u3055\u3089\u306b\u9032\u5316\u3057\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5897\u3048\u7d9a\u3051\u308b\u9700\u8981\u3092\u6e80\u305f\u3059\u305f\u3081\u306e\u3088\u308a\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002<\/p>","protected":false},"featured_media":477806,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477805","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Layer 4 Switch: Enhancing Proxy Server Performance and Efficiency<\/mark>","faq_items":[{"question":"What is a Layer 4 switch, and how does it work?","answer":"<p>A Layer 4 switch is a network device that operates at the Transport Layer (Layer 4) of the OSI model. It intelligently routes data packets based on their source and destination port numbers. By doing so, it optimizes network traffic and enhances the performance of applications like proxy servers.<\/p>"},{"question":"How did Layer 4 switches come into existence?","answer":"<p>The concept of Layer 4 switches emerged in the late 1990s as a solution to handle the increasing internet traffic efficiently. The first mentions of Layer 4 switching were seen in research papers and technical discussions during the early 2000s, where the potential benefits of such devices were explored.<\/p>"},{"question":"What are the key features of Layer 4 switches?","answer":"<p>The key features of Layer 4 switches include:<\/p><ul><li>Load Balancing: Distributing traffic across multiple servers or proxy nodes to prevent overloads.<\/li><li>Session Persistence: Maintaining user sessions by directing requests to the same server.<\/li><li>Health Monitoring: Performing health checks on servers and routing traffic to healthy ones.<\/li><li>Basic Security: Filtering or blocking traffic based on port numbers.<\/li><\/ul>"},{"question":"What types of Layer 4 switches are there?","answer":"<p>There are two primary types of Layer 4 switches:<\/p><ol><li>Hardware-based: Offering high performance and scalability, optimized for heavy traffic loads.<\/li><li>Software-based: Cost-effective and flexible, easier to deploy, but with limited performance for high loads.<\/li><\/ol>"},{"question":"How are Layer 4 switches used with proxy servers?","answer":"<p>Layer 4 switches play a crucial role in optimizing the performance of proxy servers. They provide load balancing capabilities, ensuring even distribution of client requests among multiple proxy nodes. This helps maintain server availability, improve response times, and prevent overloads.<\/p>"},{"question":"What challenges can be encountered when using Layer 4 switches with proxy servers?","answer":"<p>Some challenges include server overloads and session persistence. To address these issues, proper configuration and cookie-based approaches can be employed.<\/p>"},{"question":"What are the future perspectives of Layer 4 switches?","answer":"<p>In the future, Layer 4 switches are expected to incorporate more advanced security features, adopt AI-driven load balancing algorithms, and offer full support for IPv6 to keep up with evolving technologies.<\/p>"},{"question":"Where can I find more information about Layer 4 switches and proxy servers?","answer":""}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477805","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\/477805\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/477806"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477805"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}