{"id":478323,"date":"2023-08-09T09:30:51","date_gmt":"2023-08-09T09:30:51","guid":{"rendered":""},"modified":"2023-09-05T11:16:30","modified_gmt":"2023-09-05T11:16:30","slug":"packet-sniffing","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/packet-sniffing\/","title":{"rendered":"\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0"},"content":{"rendered":"<h2>\u5c0e\u5165<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5206\u91ce\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5f37\u529b\u304b\u3064\u4e0d\u53ef\u6b20\u306a\u6280\u8853\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30a2\u30ca\u30ea\u30b9\u30c8\u306f\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6d41\u308c\u308b\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3092\u76e3\u8996\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u3001\u5206\u6790\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u691c\u67fb\u3059\u308b\u3053\u3068\u3067\u3001\u8cb4\u91cd\u306a\u60c5\u5831\u3092\u62bd\u51fa\u3067\u304d\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u7570\u5e38\u306e\u691c\u51fa\u3001\u6a5f\u5bc6\u30c7\u30fc\u30bf\u306e\u4fdd\u8b77\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u6b74\u53f2\u3001\u4ed5\u7d44\u307f\u3001\u7a2e\u985e\u3001\u7528\u9014\u3001\u5c06\u6765\u306e\u5c55\u671b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u8d77\u6e90<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u8d77\u6e90\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u521d\u671f\u306e\u9803\u306b\u307e\u3067\u9061\u308a\u307e\u3059\u30021970 \u5e74\u4ee3\u306b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u767b\u5834\u3057\u59cb\u3081\u305f\u3068\u304d\u3001\u7814\u7a76\u8005\u3084\u7ba1\u7406\u8005\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u3092\u7406\u89e3\u3057\u3066\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u3068\u3044\u3046\u8ab2\u984c\u306b\u76f4\u9762\u3057\u307e\u3057\u305f\u3002\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306b\u3064\u3044\u3066\u6700\u521d\u306b\u8a00\u53ca\u3057\u305f\u306e\u306f\u30011987 \u5e74\u306b\u6700\u3082\u521d\u671f\u306e\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0 \u30c4\u30fc\u30eb\u306e 1 \u3064\u3067\u3042\u308b\u300ctcpdump\u300d\u3092\u958b\u767a\u3057\u305f Van Jacobson \u3067\u3059\u3002<\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0 (\u30d1\u30b1\u30c3\u30c8 \u30ad\u30e3\u30d7\u30c1\u30e3\u307e\u305f\u306f\u30d1\u30b1\u30c3\u30c8\u5206\u6790\u3068\u3082\u547c\u3070\u308c\u308b) \u3067\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u79fb\u52d5\u3059\u308b\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u3092\u508d\u53d7\u3057\u3066\u8abf\u67fb\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf \u30d1\u30b1\u30c3\u30c8\u306b\u306f\u3001\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3068\u9001\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u60c5\u5831\u3001\u30da\u30a4\u30ed\u30fc\u30c9 \u30c7\u30fc\u30bf\u306a\u3069\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0 \u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3053\u308c\u3089\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u3001\u307e\u305f\u306f\u4fdd\u5b58\u3055\u308c\u305f\u30c7\u30fc\u30bf\u304b\u3089\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u3066\u5206\u6790\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u5185\u90e8\u69cb\u9020<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30d5\u30a1\u30fc\u306f\u3001OSI \u30e2\u30c7\u30eb\u306e\u30c7\u30fc\u30bf \u30ea\u30f3\u30af\u5c64 (\u30ec\u30a4\u30e4\u30fc 2) \u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64 (\u30ec\u30a4\u30e4\u30fc 3) \u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002\u4e3b\u306b 2 \u3064\u306e\u30e2\u30fc\u30c9\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u4e71\u4ea4\u30e2\u30fc\u30c9:<\/strong> \u3053\u306e\u30e2\u30fc\u30c9\u3067\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 \u30ab\u30fc\u30c9\u306f\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30d5\u30a1\u30fc\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30db\u30b9\u30c8\u5b9b\u3066\u3067\u306f\u306a\u3044\u30d1\u30b1\u30c3\u30c8\u3082\u542b\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u78ba\u8a8d\u3067\u304d\u308b\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u975e\u7121\u5dee\u5225\u30e2\u30fc\u30c9:<\/strong> \u3053\u3053\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 \u30ab\u30fc\u30c9\u306f\u3001\u30db\u30b9\u30c8 \u30b7\u30b9\u30c6\u30e0\u306b\u5b9b\u3066\u3089\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u307f\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u305f\u3081\u306b\u3001\u30b9\u30cb\u30d5\u30a1\u30fc\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9 \u30ab\u30fc\u30c9\u3092\u30d7\u30ed\u30df\u30b9\u30ad\u30e3\u30b9 \u30e2\u30fc\u30c9\u306b\u8a2d\u5b9a\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30b0\u30e1\u30f3\u30c8\u4e0a\u306e\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c02\u9580\u5bb6\u306b\u3068\u3063\u3066\u6b20\u304b\u305b\u306a\u3044\u30c4\u30fc\u30eb\u3068\u306a\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30d1\u30b1\u30c3\u30c8\u691c\u67fb:<\/strong> \u30b9\u30cb\u30d5\u30a1\u30fc\u306f\u30d1\u30b1\u30c3\u30c8 \u30d8\u30c3\u30c0\u30fc\u3068\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5206\u6790\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30d1\u30bf\u30fc\u30f3\u3092\u7406\u89e3\u3057\u3001\u6f5c\u5728\u7684\u306a\u8105\u5a01\u3092\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a<\/strong> \u30d1\u30b1\u30c3\u30c8\u306e\u30a8\u30e9\u30fc\u3001\u9045\u5ef6\u3001\u307e\u305f\u306f\u8aa4\u3063\u305f\u69cb\u6210\u3092\u691c\u67fb\u3059\u308b\u3053\u3068\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u306e\u8a3a\u65ad\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u8996:<\/strong> \u30b9\u30cb\u30d5\u30a1\u30fc\u306f\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u8a66\u307f\u3084\u30c7\u30fc\u30bf\u4fb5\u5bb3\u306a\u3069\u306e\u60aa\u610f\u306e\u3042\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u691c\u51fa\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u7ba1\u7406\u8005\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u9069\u5316\u3057\u3001\u8f3b\u8f33\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u7a2e\u985e<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u304c\u5b9f\u884c\u3055\u308c\u308b\u5834\u6240\u306b\u57fa\u3065\u3044\u3066\u3001\u4e3b\u306b 2 \u3064\u306e\u30bf\u30a4\u30d7\u306b\u5206\u985e\u3067\u304d\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u30bf\u30a4\u30d7<\/strong><\/th>\n<th><strong>\u8aac\u660e<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u30ed\u30fc\u30ab\u30eb\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0<\/strong><\/td>\n<td>\u30ed\u30fc\u30ab\u30eb \u30db\u30b9\u30c8\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u4e0a\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306f\u3001\u30ed\u30fc\u30ab\u30eb \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30c7\u30d0\u30c3\u30b0\u3068\u5206\u6790\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30c4\u30fc\u30eb\u306b\u306f\u3001Wireshark \u3084 tcpdump \u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30ea\u30e2\u30fc\u30c8\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0<\/strong><\/td>\n<td>\u30ea\u30e2\u30fc\u30c8 \u30db\u30b9\u30c8\u307e\u305f\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30b0\u30e1\u30f3\u30c8\u4e0a\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7ba1\u7406\u8005\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u3055\u307e\u3056\u307e\u306a\u30dd\u30a4\u30f3\u30c8\u304b\u3089\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5206\u6790\u3067\u304d\u307e\u3059\u3002\u30ea\u30e2\u30fc\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u5927\u898f\u6a21\u306a\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u74b0\u5883\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u4f7f\u7528\u65b9\u6cd5: \u8ab2\u984c\u3068\u89e3\u6c7a\u7b56<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30c9\u30e1\u30a4\u30f3\u3067\u3055\u307e\u3056\u307e\u306a\u76ee\u7684\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u305d\u306e\u6a5f\u80fd\u304c\u60aa\u7528\u3055\u308c\u308b\u3068\u3001\u6f5c\u5728\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30ea\u30b9\u30af\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u6b63\u5f53\u306a\u4f7f\u7528:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u306f\u3001\u8a3a\u65ad\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5206\u6790\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6700\u9069\u5316\u306e\u305f\u3081\u306b\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u61f8\u5ff5:<\/strong> \u60aa\u610f\u306e\u3042\u308b\u4eba\u7269\u306f\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ed\u30b0\u30a4\u30f3\u8a8d\u8a3c\u60c5\u5831\u3084\u500b\u4eba\u60c5\u5831\u306a\u3069\u306e\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u508d\u53d7\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u8ee2\u9001\u4e2d\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5f37\u529b\u306a\u6697\u53f7\u5316\u3068\u5b89\u5168\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306e\u554f\u984c:<\/strong> \u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306b\u3088\u3063\u3066\u30e6\u30fc\u30b6\u30fc\u306e\u901a\u4fe1\u3092\u691c\u67fb\u3067\u304d\u308b\u305f\u3081\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u95a2\u3059\u308b\u61f8\u5ff5\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u898f\u5236\u3078\u306e\u6e96\u62e0\u3092\u78ba\u5b9f\u306b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9:<\/strong> \u7d99\u7d9a\u7684\u306a\u30d1\u30b1\u30c3\u30c8 \u30ad\u30e3\u30d7\u30c1\u30e3\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30ea\u30bd\u30fc\u30b9\u3092\u6d88\u8cbb\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u5b9f\u88c5\u3057\u3001\u5c02\u7528\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u3053\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u6bd4\u8f03<\/h2>\n<p>\u985e\u4f3c\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7528\u8a9e\u3068\u6bd4\u8f03\u3057\u305f\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u7279\u6027<\/strong><\/th>\n<th><strong>\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0<\/strong><\/th>\n<th><strong>\u30c7\u30a3\u30fc\u30d7\u30d1\u30b1\u30c3\u30c8\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3 (DPI)<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u76ee\u7684<\/strong><\/td>\n<td>\u3055\u307e\u3056\u307e\u306a\u76ee\u7684\u3067\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u3066\u5206\u6790\u3057\u307e\u3059\u3002<\/td>\n<td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8b58\u5225\u306e\u305f\u3081\u306b\u30d1\u30b1\u30c3\u30c8\u306e\u5185\u5bb9\u3092\u8a73\u7d30\u306b\u5206\u6790\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7bc4\u56f2<\/strong><\/td>\n<td>\u826f\u6027\u306e\u76ee\u7684\u306b\u3082\u60aa\u6027\u306e\u76ee\u7684\u306b\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/td>\n<td>\u4e3b\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u4fb5\u5165\u691c\u77e5\u306e\u76ee\u7684\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7c92\u5ea6<\/strong><\/td>\n<td>\u30d1\u30b1\u30c3\u30c8 \u30ec\u30d9\u30eb\u3067\u52d5\u4f5c\u3057\u3001\u5b8c\u5168\u306a\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u307e\u3059\u3002<\/td>\n<td>\u30d1\u30b1\u30c3\u30c8 \u30da\u30a4\u30ed\u30fc\u30c9\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u56fa\u6709\u306e\u30c7\u30fc\u30bf\u3092\u5206\u6790\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5c55\u671b\u3068\u5c06\u6765\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc<\/h2>\n<p>\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u306b\u3064\u308c\u3066\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u72b6\u6cc1\u306f\u5927\u304d\u304f\u5909\u5316\u3059\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u4eca\u5f8c\u306e\u50be\u5411\u3068\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790:<\/strong> \u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u89e3\u8aad\u3057\u3066\u5206\u6790\u3059\u308b\u6280\u8853\u306e\u9032\u6b69\u306f\u3001\u5b89\u5168\u306a\u901a\u4fe1\u5185\u306b\u6f5c\u3080\u8105\u5a01\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306b\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>AI \u3092\u6d3b\u7528\u3057\u305f\u5206\u6790:<\/strong> \u4eba\u5de5\u77e5\u80fd\u3068\u6a5f\u68b0\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u5206\u6790\u306e\u81ea\u52d5\u5316\u3068\u6539\u5584\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u3088\u308a\u52b9\u7387\u7684\u304b\u3064\u6b63\u78ba\u306a\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>IoT\u30685G\u306e\u8ab2\u984c:<\/strong> \u30e2\u30ce\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 (IoT) \u30c7\u30d0\u30a4\u30b9\u3068 5G \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4f7f\u7528\u304c\u5897\u3048\u308b\u3068\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306b\u65b0\u305f\u306a\u8ab2\u984c\u304c\u751f\u3058\u3001\u62e1\u5f35\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u3068\u5bc6\u63a5\u306a\u95a2\u4fc2\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u901a\u904e\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u508d\u53d7\u3057\u3066\u691c\u67fb\u3067\u304d\u308b\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u3055\u3089\u306a\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u533f\u540d\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001OneProxy (oneproxy.pro) \u306a\u3069\u306e\u8a55\u5224\u306e\u826f\u3044\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u53b3\u683c\u306a\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc \u30dd\u30ea\u30b7\u30fc\u3092\u91cd\u8996\u3057\u3066\u304a\u308a\u3001\u60aa\u610f\u306e\u3042\u308b\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u6d3b\u52d5\u306b\u306f\u95a2\u4e0e\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/www.wireshark.org\/\" target=\"_new\" rel=\"noopener nofollow\">Wireshark \u516c\u5f0f\u30b5\u30a4\u30c8<\/a>: \u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d1\u30b1\u30c3\u30c8\u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u304a\u3088\u3073\u5206\u6790\u30c4\u30fc\u30eb\u3002<\/li>\n<li><a href=\"https:\/\/www.tcpdump.org\/manpages\/tcpdump.1.html\" target=\"_new\" rel=\"noopener nofollow\">tcpdump \u30de\u30cb\u30e5\u30a2\u30eb\u30da\u30fc\u30b8<\/a>: tcpdump \u30b3\u30de\u30f3\u30c9\u306e\u516c\u5f0f\u30de\u30cb\u30e5\u30a2\u30eb \u30da\u30fc\u30b8\u3002<\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/security\/glossary\/what-is-deep-packet-inspection-dpi\/\" target=\"_new\" rel=\"noopener nofollow\">\u30c7\u30a3\u30fc\u30d7 \u30d1\u30b1\u30c3\u30c8 \u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3 (DPI) \u306e\u8aac\u660e<\/a>: \u30c7\u30a3\u30fc\u30d7 \u30d1\u30b1\u30c3\u30c8 \u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\u3068\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u5b66\u3073\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u6790\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u57fa\u672c\u7684\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u8cac\u4efb\u3092\u6301\u3063\u3066\u4f7f\u7528\u3059\u308c\u3070\u3001\u7ba1\u7406\u8005\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u95a2\u3059\u308b\u8cb4\u91cd\u306a\u6d1e\u5bdf\u3092\u5f97\u3066\u3001\u554f\u984c\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c6\u30af\u30ce\u30ed\u30b8\u306e\u9032\u6b69\u306b\u4f34\u3044\u3001\u30d1\u30b1\u30c3\u30c8 \u30b9\u30cb\u30c3\u30d5\u30a3\u30f3\u30b0\u306e\u5c06\u6765\u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u3088\u308a\u9ad8\u5ea6\u306a\u5206\u6790\u3068\u5b89\u5168\u306a\u51e6\u7406\u3092\u7d04\u675f\u3057\u3001\u7d44\u7e54\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u30b5\u30a4\u30d0\u30fc \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5206\u91ce\u3067\u5e38\u306b\u4e00\u6b69\u5148\u3092\u884c\u304f\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/p>","protected":false},"featured_media":478324,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478323","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Packet Sniffing: Unveiling Network Secrets<\/mark>","faq_items":[{"question":"What is packet sniffing?","answer":"<p>Packet sniffing is a technique used in computer networking and security to intercept and analyze data packets traveling through a network. It allows network administrators and security experts to monitor and understand network traffic, troubleshoot issues, and detect potential threats.<\/p>"},{"question":"Who first developed packet sniffing?","answer":"<p>The first mention of packet sniffing can be attributed to Van Jacobson, who developed \"tcpdump,\" one of the earliest packet sniffing tools, in 1987.<\/p>"},{"question":"How does packet sniffing work?","answer":"<p>Packet sniffers operate at the data link layer (Layer 2) and network layer (Layer 3) of the OSI model. They capture data packets passing through a network interface, enabling analysis of packet headers and payloads.<\/p>"},{"question":"What are the main features of packet sniffing?","answer":"<p>Packet sniffing offers key features such as packet inspection, troubleshooting network issues, security monitoring, and performance optimization.<\/p>"},{"question":"What are the types of packet sniffing?","answer":"<p>Packet sniffing can be classified into two types: local packet sniffing (capturing on the local host's network interface) and remote packet sniffing (capturing on a remote host or network segment).<\/p>"},{"question":"How can packet sniffing be used, and what challenges does it pose?","answer":"<p>Packet sniffing has legitimate uses for network diagnostics and optimization, but it can also raise security and privacy concerns. Malicious use of packet sniffing can lead to unauthorized access and data breaches.<\/p>"},{"question":"How does packet sniffing compare to deep packet inspection (DPI)?","answer":"<p>Packet sniffing captures and analyzes packets for various purposes, while DPI involves in-depth analysis of packet contents for security and application identification.<\/p>"},{"question":"What are the future technologies related to packet sniffing?","answer":"<p>The future of packet sniffing involves encrypted traffic analysis, AI-driven analysis, and addressing challenges posed by IoT and 5G networks.<\/p>"},{"question":"How are proxy servers associated with packet sniffing?","answer":"<p>Proxy servers can intercept and inspect packets passing through them, offering an additional layer of security and anonymity for users.<\/p>"},{"question":"Where can I find more information about packet sniffing?","answer":"<p>For more information about packet sniffing, you can visit the Wireshark Official Website, read the tcpdump Man Page, and explore resources on Deep Packet Inspection (DPI).<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478323","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\/478323\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/478324"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=478323"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}