{"id":5173,"date":"2025-07-20T00:36:21","date_gmt":"2025-07-19T15:36:21","guid":{"rendered":"https:\/\/sky-peace.net\/?p=5173"},"modified":"2025-07-20T00:36:21","modified_gmt":"2025-07-19T15:36:21","slug":"arp","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/arp\/","title":{"rendered":"\u3010\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u5bfe\u7b56\u3011ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u306e\u5168\u3066\uff1a\u5f79\u5272\u30fb\u9055\u3044\u30fb\u899a\u3048\u65b9\u3092\u5fb9\u5e95\u89e3\u8aac\uff01"},"content":{"rendered":"<p>\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u9ad8\u5ea6IT\u8a66\u9a13\u306e\u5b66\u7fd2\u3001\u304a\u75b2\u308c\u69d8\u3067\u3059\uff01\u4eca\u56de\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u4e2d\u306e\u57fa\u790e\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u591a\u304f\u306e\u5b66\u7fd2\u8005\u304c\u300c\u306a\u305c\u5fc5\u8981\u306a\u3093\u3060\u308d\u3046\uff1f\u300d\u3068\u7591\u554f\u306b\u601d\u3046\u3053\u3068\u306e\u591a\u3044\u300cARP\uff08Address Resolution Protocol\uff09\u300d\u300cRARP\uff08Reverse Address Resolution Protocol\uff09\u300d\u300c\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09\u300d\u306b\u3064\u3044\u3066\u3001\u5fb9\u5e95\u7684\u306b\u6df1\u6398\u308a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u300c\u305f\u304b\u304c\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u3087\uff1f\u300d\u3068\u601d\u3046\u65b9\u3082\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3067\u3082\u3001\u3061\u3087\u3063\u3068\u5f85\u3063\u3066\u304f\u3060\u3055\u3044\uff01\u3053\u308c\u3089\u306e\u6280\u8853\u306f\u3001\u79c1\u305f\u3061\u304c\u666e\u6bb5\u610f\u8b58\u3059\u308b\u3053\u3068\u306a\u304f\u4f7f\u3063\u3066\u3044\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u793e\u5185\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3001\u3044\u304b\u306b\u52b9\u7387\u7684\u304b\u3064\u67d4\u8edf\u306b\u52d5\u3044\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u3001\u307e\u3055\u306b\u300c\u7e01\u306e\u4e0b\u306e\u529b\u6301\u3061\u300d\u306a\u3093\u3067\u3059\u3002<\/p>\n<h3>0. \u3053\u306e\u8a18\u4e8b\u306e\u8a2d\u8a08\u601d\u60f3\uff1a\u306a\u305c\u300cARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u300d\u3092\u5b66\u3076\u306e\u304b\uff1f<\/h3>\n<p>\u307f\u306a\u3055\u3093\u3001\u3053\u3093\u306b\u3061\u306f\uff01IT\u5b66\u7fd2\u30e1\u30f3\u30bf\u30fc\u306e\u3007\u3007\u3067\u3059\u3002\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u9ad8\u5ea6IT\u8a66\u9a13\u306e\u5b66\u7fd2\u3001\u304a\u75b2\u308c\u69d8\u3067\u3059\uff01\u4eca\u56de\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u4e2d\u306e\u57fa\u790e\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u591a\u304f\u306e\u5b66\u7fd2\u8005\u304c\u300c\u306a\u305c\u5fc5\u8981\u306a\u3093\u3060\u308d\u3046\uff1f\u300d\u3068\u7591\u554f\u306b\u601d\u3046\u3053\u3068\u306e\u591a\u3044\u300cARP\uff08Address Resolution Protocol\uff09\u300d\u300cRARP\uff08Reverse Address Resolution Protocol\uff09\u300d\u300c\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09\u300d\u306b\u3064\u3044\u3066\u3001\u5fb9\u5e95\u7684\u306b\u6df1\u6398\u308a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u300c\u305f\u304b\u304c\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u3087\uff1f\u300d\u3068\u601d\u3046\u65b9\u3082\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3067\u3082\u3001\u3061\u3087\u3063\u3068\u5f85\u3063\u3066\u304f\u3060\u3055\u3044\uff01\u3053\u308c\u3089\u306e\u6280\u8853\u306f\u3001\u79c1\u305f\u3061\u304c\u666e\u6bb5\u610f\u8b58\u3059\u308b\u3053\u3068\u306a\u304f\u4f7f\u3063\u3066\u3044\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u793e\u5185\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3001\u3044\u304b\u306b\u52b9\u7387\u7684\u304b\u3064\u67d4\u8edf\u306b\u52d5\u3044\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u3001\u307e\u3055\u306b\u300c\u7e01\u306e\u4e0b\u306e\u529b\u6301\u3061\u300d\u306a\u3093\u3067\u3059\u3002<\/p>\n<h4>\u5358\u306a\u308b\u8a66\u9a13\u5bfe\u7b56\u3092\u8d85\u3048\u3066\u3001\u672c\u8cea\u7684\u306a\u7406\u89e3\u3078<\/h4>\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u30b4\u30fc\u30eb\u306f\u3001\u5358\u306b\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u306e\u5408\u683c\u306b\u5fc5\u8981\u306a\u77e5\u8b58\u3092\u8a70\u3081\u8fbc\u3080\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3082\u3061\u308d\u3093\u3001\u8a66\u9a13\u3067\u554f\u308f\u308c\u308b\u30dd\u30a4\u30f3\u30c8\u306f\u3057\u3063\u304b\u308a\u3068\u62bc\u3055\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u4ee5\u4e0a\u306b\u5927\u5207\u306b\u3057\u305f\u3044\u306e\u306f\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u300c\u306a\u305c\u5b58\u5728\u3059\u308b\u306e\u304b\u300d\u300c\u3069\u3093\u306a\u8ab2\u984c\u3092\u89e3\u6c7a\u3057\u3066\u3044\u308b\u306e\u304b\u300d\u300c\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u3069\u306e\u3088\u3046\u306b\u6d3b\u7528\u3055\u308c\u3066\u3044\u308b\u306e\u304b\u300d\u3068\u3044\u3063\u305f\u3001<strong>\u6280\u8853\u306e\u672c\u8cea\u7684\u306a\u9762\u767d\u3055<\/strong>\u306b\u89e6\u308c\u3066\u3082\u3089\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u57fa\u790e\u77e5\u8b58\u3092\u4e38\u6697\u8a18\u3059\u308b\u3060\u3051\u3067\u306f\u3001\u3044\u3056\u5b9f\u8df5\u306e\u5834\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c8\u30e9\u30d6\u30eb\u306b\u76f4\u9762\u3057\u305f\u3068\u304d\u306b\u3001\u3069\u3046\u5bfe\u51e6\u3059\u308c\u3070\u826f\u3044\u304b\u5206\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u672c\u8cea\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u672a\u77e5\u306e\u72b6\u6cc1\u306b\u3082\u5bfe\u5fdc\u3067\u304d\u308b\u300c\u5fdc\u7528\u529b\u300d\u3068\u300c\u554f\u984c\u89e3\u6c7a\u80fd\u529b\u300d\u304c\u8eab\u306b\u3064\u304f\u306f\u305a\u3067\u3059\u3002<\/p>\n<h4>\u77e5\u8b58\u3092\u300c\u70b9\u300d\u3067\u306f\u306a\u304f\u300c\u7dda\u300d\u3067\u7e4b\u3050\u5b66\u7fd2\u4f53\u9a13<\/h4>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u306f\u3001\u4e00\u3064\u3072\u3068\u3064\u306e\u8981\u7d20\u304c\u8907\u96d1\u306b\u7d61\u307f\u5408\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u3092\u5b64\u7acb\u3057\u305f\u77e5\u8b58\u3068\u3057\u3066\u3067\u306f\u306a\u304f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3084MAC\u30a2\u30c9\u30ec\u30b9\u3001\u30eb\u30fc\u30bf\u3001\u30b9\u30a4\u30c3\u30c1\u3068\u3044\u3063\u305f\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3068\u3069\u306e\u3088\u3046\u306b\u9023\u643a\u3057\u3001\u5168\u4f53\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3066\u3044\u308b\u306e\u304b\u3092\u300c\u7dda\u300d\u3067\u7e4b\u3052\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u904e\u53bb\u306e\u6280\u8853\u3067\u3042\u308bRARP\u304c\u306a\u305c\u751f\u307e\u308c\u3001\u306a\u305c\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305f\u306e\u304b\u3001\u305d\u306e\u80cc\u666f\u3092\u77e5\u308b\u3053\u3068\u3067\u3001\u6280\u8853\u306e\u9032\u5316\u306e\u904e\u7a0b\u3084\u3001\u3088\u308a\u826f\u3044\u89e3\u6c7a\u7b56\u304c\u751f\u307e\u308c\u3066\u304d\u305f\u6b74\u53f2\u3082\u611f\u3058\u53d6\u3063\u3066\u3044\u305f\u3060\u3051\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3055\u3042\u3001\u4e00\u7dd2\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5965\u6df1\u3055\u3092\u63a2\u6c42\u3057\u3001\u7686\u3055\u3093\u306eIT\u5b66\u7fd2\u304c\u3055\u3089\u306b\u697d\u3057\u304f\u3001\u6709\u610f\u7fa9\u306a\u3082\u306e\u306b\u306a\u308b\u3088\u3046\u3001\u5168\u529b\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\uff01<\/p>\n<h3>1. \u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1\u306e\u300c\u4f4f\u6240\u300d\u3068\u300c\u5b9b\u540d\u300d<\/h3>\n<p>\u79c1\u305f\u3061\u306e\u65e5\u5e38\u751f\u6d3b\u3067\u624b\u7d19\u3092\u9001\u308b\u6642\u3092\u60f3\u50cf\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u624b\u7d19\u3092\u5c4a\u3051\u308b\u305f\u3081\u306b\u306f\u300c\u4f4f\u6240\u300d\uff08\u3069\u3053\u3078\u9001\u308b\u304b\uff09\u3068\u300c\u5b9b\u540d\u300d\uff08\u8ab0\u306b\u9001\u308b\u304b\uff09\u306e\u4e21\u65b9\u304c\u5fc5\u8981\u3067\u3059\u3088\u306d\uff1f\u5b9f\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306e\u901a\u4fe1\u3082\u3001\u3053\u308c\u3068\u3088\u304f\u4f3c\u305f\u4ed5\u7d44\u307f\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>IP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\uff1a\u305d\u308c\u305e\u308c\u306e\u5f79\u5272<\/h4>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4e16\u754c\u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u3066\u4e8c\u3064\u306e\u91cd\u8981\u306a\u300c\u30a2\u30c9\u30ec\u30b9\u300d\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u305d\u308c\u304c\u300cIP\u30a2\u30c9\u30ec\u30b9\u300d\u3068\u300cMAC\u30a2\u30c9\u30ec\u30b9\u300d\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>IP\u30a2\u30c9\u30ec\u30b9\uff08Internet Protocol Address\uff09\uff1a<\/strong><br \/>\n\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3092\u8b58\u5225\u3059\u308b\u305f\u3081\u306e\u300c\u8ad6\u7406\u7684\u306a\u4f4f\u6240\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u4f8b\u3048\u3070\u300c192.168.1.10\u300d\u306e\u3088\u3046\u306b\u6570\u5b57\u306e\u7f85\u5217\u3067\u8868\u3055\u308c\u3001\u30eb\u30fc\u30bf\u304c\u3053\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u898b\u3066\u3001\u30c7\u30fc\u30bf\u304c\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u5411\u304b\u3046\u3079\u304d\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u69cb\u6210\u306b\u3088\u3063\u3066\u5909\u66f4\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>MAC\u30a2\u30c9\u30ec\u30b9\uff08Media Access Control Address\uff09\uff1a<\/strong><br \/>\n\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u4e00\u3064\u3072\u3068\u3064\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u300c\u7269\u7406\u7684\u306a\u5b9b\u540d\u300d\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c0\u30d7\u30bf\uff08NIC\uff09\u306b\u5de5\u5834\u51fa\u8377\u6642\u306b\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3044\u308b\u3001\u4e16\u754c\u3067\u552f\u4e00\u306e\u8b58\u5225\u5b50\u3067\u3001\u300c00:1A:2B:3C:4D:5E\u300d\u306e\u3088\u3046\u306b16\u9032\u6570\u3067\u8868\u3055\u308c\u307e\u3059\u3002MAC\u30a2\u30c9\u30ec\u30b9\u306f\u57fa\u672c\u7684\u306b\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<p>\u30a4\u30e1\u30fc\u30b8\u3068\u3057\u3066\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u304c\u300c\u6771\u4eac\u90fd\u5e81\u300d\u3068\u3044\u3046\u4f4f\u6240\u3001MAC\u30a2\u30c9\u30ec\u30b9\u304c\u300c\u79d8\u66f8\u8ab2\u306e\u7530\u4e2d\u3055\u3093\u300d\u3068\u3044\u3046\u5b9b\u540d\u3001\u3068\u3044\u3063\u305f\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002\u624b\u7d19\u3092\u5c4a\u3051\u308b\u306b\u306f\u3001\u300c\u6771\u4eac\u90fd\u5e81\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u306b\u3044\u308b\u3001\u79d8\u66f8\u8ab2\u306e\u7530\u4e2d\u3055\u3093\uff08MAC\u30a2\u30c9\u30ec\u30b9\uff09\u306b\u5c4a\u3051\u3066\u307b\u3057\u3044\u300d\u3068\u3044\u3046\u4e21\u65b9\u306e\u60c5\u5831\u304c\u5fc5\u8981\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<h4>\u306a\u305c\u3001\u4e8c\u3064\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u5fc5\u8981\u306a\u306e\u304b\uff1f<\/h4>\n<p>\u306a\u305c\u3001\u3053\u3093\u306a\u306b\u4f3c\u305f\u3088\u3046\u306a\u5f79\u5272\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u4e8c\u3064\u3082\u5fc5\u8981\u306a\u306e\u3067\u3057\u3087\u3046\uff1f\u305d\u308c\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u7570\u306a\u308b\u968e\u5c64\uff08\u5f79\u5272\uff09\u3067\u4f7f\u308f\u308c\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u4e3b\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5c64\uff08OSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u30ec\u30a4\u30e43\uff09\u3067\u4f7f\u308f\u308c\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\uff08\u4f8b\u3048\u3070\u3001\u81ea\u5b85\u304b\u3089\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306eWeb\u30b5\u30a4\u30c8\u3078\uff09\u306e\u901a\u4fe1\u7d4c\u8def\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u4e3b\u306b\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\uff08OSI\u53c2\u7167\u30e2\u30c7\u30eb\u306e\u30ec\u30a4\u30e42\uff09\u3067\u4f7f\u308f\u308c\u3001\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\uff08\u4f8b\u3048\u3070\u3001\u540c\u3058\u5bb6\u5ead\u5185\u306e\u30d1\u30bd\u30b3\u30f3\u540c\u58eb\uff09\u3067\u306e\u6a5f\u5668\u9593\u306e\u76f4\u63a5\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3064\u307e\u308a\u3001\u30c7\u30fc\u30bf\u304c\u6700\u7d42\u76ee\u7684\u5730\u306b\u5230\u9054\u3059\u308b\u307e\u3067\u306e\u300c\u5927\u307e\u304b\u306a\u9053\u306e\u308a\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\uff09\u300d\u3092\u6c7a\u3081\u308b\u306e\u304cIP\u30a2\u30c9\u30ec\u30b9\u3001\u305d\u3057\u3066\u305d\u306e\u9053\u306e\u308a\u306e\u300c\u5404\u533a\u9593\u3067\u306e\u5177\u4f53\u7684\u306a\u53d7\u3051\u6e21\u3057\uff08\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\uff09\u300d\u3092\u6c7a\u3081\u308b\u306e\u304cMAC\u30a2\u30c9\u30ec\u30b9\u3001\u3068\u3044\u3046\u5206\u62c5\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u4e00\u3064\u306e\u7591\u554f\u304c\u751f\u307e\u308c\u307e\u3059\u3002\u300cIP\u30a2\u30c9\u30ec\u30b9\u306f\u77e5\u3063\u3066\u3044\u308b\u3051\u308c\u3069\u3001\u5bfe\u5fdc\u3059\u308bMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u3001\u3069\u3046\u3084\u3063\u3066\u901a\u4fe1\u3092\u59cb\u3081\u308c\u3070\u3044\u3044\u306e\u3060\u308d\u3046\uff1f\u300d\u305d\u3046\u3001\u307e\u3055\u306b\u3053\u306e\u7591\u554f\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u767b\u5834\u3059\u308b\u306e\u304c\u3001\u4eca\u56de\u306e\u4e3b\u5f79\u3067\u3042\u308b\u300cARP\u300d\u300cRARP\u300d\u300c\u30d7\u30ed\u30ad\u30b7ARP\u300d\u3068\u3044\u3063\u305f\u30d7\u30ed\u30c8\u30b3\u30eb\u305f\u3061\u306a\u306e\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u307e\u305a\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5168\u4f53\u50cf\u3092\u63b4\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>2. \u7d50\u8ad6\u30d5\u30a1\u30fc\u30b9\u30c8\uff1aARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u3092\u4e00\u8a00\u3067\u3044\u3046\u3068\uff1f<\/h3>\n<p>\u307e\u305a\u3001\u4eca\u56de\u306e\u4e3b\u5f79\u3067\u3042\u308b\u300cARP\u300d\u300cRARP\u300d\u300c\u30d7\u30ed\u30ad\u30b7ARP\u300d\u304c\u305d\u308c\u305e\u308c\u3069\u3093\u306a\u5f79\u5272\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u304b\u3001\u7d50\u8ad6\u304b\u3089\u30ba\u30d0\u30ea\u304a\u4f1d\u3048\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3089\u306e\u6280\u8853\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u3001\u6838\u3068\u306a\u308b\u30a4\u30e1\u30fc\u30b8\u3092\u63b4\u3080\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<h4>ARP\uff1aIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u5c0b\u306d\u308b\u300d\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n<p><strong>ARP\uff08Address Resolution Protocol\uff09<\/strong>\u306f\u3001\u4e00\u8a00\u3067\u3044\u3046\u3068\u3001<span class=\"marker\">\u300cIP\u30a2\u30c9\u30ec\u30b9\u306f\u77e5\u3063\u3066\u308b\u3051\u3069\u3001\u5bfe\u5fdc\u3059\u308bMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\uff01\u8ab0\u304b\u6559\u3048\u3066\uff01\u300d\u3068\u5c0b\u306d\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/span>\u3067\u3059\u3002<br \/>\n\u3053\u308c\u306f\u3001\u76ee\u7684\u5730\u3078\u306e\u624b\u7d19\u3092\u51fa\u3059\u3068\u304d\u306b\u300c\u3007\u3007\u753a\u3007\u4e01\u76ee\u300d\u3068\u3044\u3046\u4f4f\u6240\u306f\u77e5\u3063\u3066\u3044\u308b\u3051\u308c\u3069\u3001\u300c\u7530\u4e2d\u3055\u3093\u300d\u3068\u3044\u3046\u5b9b\u540d\u304c\u5206\u304b\u3089\u306a\u3044\u304b\u3089\u3001\u90f5\u4fbf\u5c40\u306b\u300c\u3053\u306e\u4f4f\u6240\u306b\u4f4f\u3093\u3067\u3044\u308b\u7530\u4e2d\u3055\u3093\u306e\u540d\u524d\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\uff01\u300d\u3068\u5c0b\u306d\u308b\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n<p><strong>\u3010\u899a\u3048\u65b9&#x1f4a1;\u3011<\/strong><br \/>\nARP\u306e\u300cA\u300d\u306f\u300cAddress\uff08\u4f4f\u6240\uff09\u300d\u306eA\u3002\u3064\u307e\u308a\u3001<strong>\u300c\u30a2\u30c9\u30ec\u30b9\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u304b\u3089\u3001\u3082\u3046\u4e00\u3064\u306e\u30a2\u30c9\u30ec\u30b9\uff08MAC\u30a2\u30c9\u30ec\u30b9\uff09\u3092\u89e3\u6c7a\uff08Resolution\uff09\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u300d<\/strong>\u3068\u899a\u3048\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3088\u3002\u672a\u77e5\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u554f\u3044\u5408\u308f\u305b\u308b\uff08Ask\uff09\u300d\u306e\u300cA\u300d\u3068\u9023\u60f3\u3059\u308b\u306e\u3082\u30a2\u30ea\u3067\u3059\uff01<\/p>\n<h4>RARP\uff1aMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u5c0b\u306d\u308b\u300d\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n<p>\u5bfe\u3057\u3066\u3001<strong>RARP\uff08Reverse Address Resolution Protocol\uff09<\/strong>\u306f\u3001<span class=\"marker\">\u300c\u81ea\u5206\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f\u77e5\u3063\u3066\u308b\u3051\u3069\u3001IP\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\uff01\u8ab0\u304b\u6559\u3048\u3066\uff01\u300d\u3068\u5c0b\u306d\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/span>\u3067\u3059\u3002<br \/>\n\u3053\u308c\u306f\u3001\u5f15\u3063\u8d8a\u3057\u3066\u304d\u305f\u3070\u304b\u308a\u3067\u307e\u3060\u81ea\u5206\u306e\u65b0\u3057\u3044\u4f4f\u6240\u3092\u77e5\u3089\u306a\u3044\u4eba\u304c\u3001\u90f5\u4fbf\u5c40\u306b\u300c\u3053\u306e\u5bb6\u306b\u4f4f\u3080\u79c1\u306e\u4f4f\u6240\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\uff01\u300d\u3068\u5c0b\u306d\u308b\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br \/>\n\u73fe\u4ee3\u3067\u306f\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u904e\u53bb\u306b\u306f\u91cd\u8981\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p><strong>\u3010\u899a\u3048\u65b9&#x1f4a1;\u3011<\/strong><br \/>\nRARP\u306e\u300cR\u300d\u306f\u300cReverse\uff08\u9006\uff09\u300d\u306eR\u3002\u3064\u307e\u308a\u3001<strong>\u300cARP\u3068\u306f\u9006\uff08Reverse\uff09\u306b\u3001MAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u300d<\/strong>\u3068\u899a\u3048\u307e\u3057\u3087\u3046\u3002\u9006\u5f15\u304d\u3059\u308b\u300cRe-verse\u300d\u306e\u300cR\u300d\u3068\u9023\u60f3\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n<h4>\u30d7\u30ed\u30ad\u30b7ARP\uff1a\u30eb\u30fc\u30bf\u304c\u300c\u4ee3\u7406\u3067\u7b54\u3048\u308b\u300d\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n<p>\u305d\u3057\u3066\u3001<strong>\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09<\/strong>\u306f\u3001<span class=\"marker\">\u300c\u672c\u6765\u306f\u5225\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3044\u308b\u6a5f\u5668\u3078\u306e\u554f\u3044\u5408\u308f\u305b\u3060\u3051\u3069\u3001\u30eb\u30fc\u30bf\u304c\u300e\u79c1\u304c\u4ee3\u7406\u3067\u3053\u3053\u306b\u3044\u308b\u3088\uff01\u300f\u3068\u7b54\u3048\u3066\u3042\u3052\u308b\u300d\u30d7\u30ed\u30c8\u30b3\u30eb<\/span>\u3067\u3059\u3002<br \/>\n\u3053\u308c\u306f\u3001\u3042\u308b\u4f1a\u793e\u306e\u4ee3\u8868\u96fb\u8a71\u306b\u300c\u3007\u3007\u90e8\u306e\u7530\u4e2d\u3055\u3093\u3044\u307e\u3059\u304b\uff1f\u300d\u3068\u96fb\u8a71\u304c\u304b\u304b\u3063\u3066\u304d\u305f\u3068\u304d\u306b\u3001\u96fb\u8a71\u53e3\u306e\u53d7\u4ed8\u306e\u4eba\u304c\u300c\u7530\u4e2d\u3055\u3093\u306f\u4eca\u5e2d\u3092\u5916\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u79c1\u306b\u4f1d\u3048\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3088\uff01\u300d\u3068\u4ee3\u7406\u3067\u7b54\u3048\u308b\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3044\u3067\u3059\u3002<\/p>\n<p><strong>\u3010\u899a\u3048\u65b9&#x1f4a1;\u3011<\/strong><br \/>\n\u30d7\u30ed\u30ad\u30b7ARP\u306e\u300c\u30d7\u30ed\u30ad\u30b7\uff08Proxy\uff09\u300d\u306f\u300c\u4ee3\u7406\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<strong>\u300c\u8ab0\u304b\u306e\uff08Proxy\uff09\u4ee3\u308f\u308a\u306b\u3001ARP\u8981\u6c42\u306b\u7b54\u3048\u3066\u3042\u3052\u308b\u300d<\/strong>\u3068\u899a\u3048\u307e\u3057\u3087\u3046\u3002\u666e\u6bb5\u306f\u76f4\u63a5\u7e4b\u304c\u3089\u306a\u3044\u76f8\u624b\u304b\u3089\u306e\u554f\u3044\u5408\u308f\u305b\u306b\u3001\u30eb\u30fc\u30bf\u304c\u300c\u4ee3\u7406\u4eba\uff08Proxy\uff09\u300d\u3068\u3057\u3066\u9593\u306b\u5165\u3063\u3066\u304f\u308c\u308b\u3001\u3068\u8003\u3048\u308b\u3068\u30b9\u30c3\u3068\u982d\u306b\u5165\u3063\u3066\u304f\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u7d50\u8ad6\u3092\u982d\u306b\u5165\u308c\u305f\u4e0a\u3067\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u304b\u3089\u306f\u305d\u308c\u305e\u308c\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u8a73\u7d30\u306a\u4ed5\u7d44\u307f\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u304d\u3063\u3068\u3001\u3088\u308a\u6df1\u304f\u7406\u89e3\u3067\u304d\u308b\u306f\u305a\u3067\u3059\u3088\uff01<\/p>\n<h3>3. \u5927\u56f3\u89e3\uff1aARP\u306e\u5168\u4f53\u50cf\u3068\u4ed5\u7d44\u307f<\/h3>\n<p>\u3055\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4e16\u754c\u3067\u306fIP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u3068\u3044\u30462\u3064\u306e\u300c\u4f4f\u6240\u300d\u3068\u300c\u5b9b\u540d\u300d\u304c\u3042\u308b\u3053\u3068\u3092\u5b66\u3073\u307e\u3057\u305f\u306d\u3002\u3067\u306f\u3001\u3053\u306e2\u3064\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u3069\u3046\u3084\u3063\u3066\u7d50\u3073\u3064\u3051\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u305d\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304c\u3001\u4eca\u56de\u306e\u4e3b\u5f79\u306e\u4e00\u4eba\u3001<strong>ARP\uff08Address Resolution Protocol\uff09<\/strong>\u3067\u3059\u3002<\/p>\n<p>ARP\u306f\u3001\u3056\u3063\u304f\u308a\u8a00\u3046\u3068\u300c\u3053\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u306f\u8ab0\uff1f\u305d\u306e\u4eba\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\uff01\u300d\u3068\u5c0b\u306d\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u52d5\u4f5c\u3092\u30b9\u30c6\u30c3\u30d7\u3054\u3068\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>ARP\u306e\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\uff1a4\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u7406\u89e3\uff01<\/h4>\n<p>\u4ee5\u4e0b\u306e\u56f3\u3092\u60f3\u50cf\u3057\u306a\u304c\u3089\u8aad\u307f\u9032\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>[\u56f3\u306e\u30a4\u30e1\u30fc\u30b8\uff1a\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6d41\u308c\u3092\u56f3\u3067\u8868\u73fe\u3057\u307e\u3059]<\/p>\n<p>PC-A (192.168.1.10) \u304c PC-B (192.168.1.20) \u306b\u901a\u4fe1\u3057\u305f\u3044<\/p>\n<p>\u2193<\/p>\n<p>1. PC-A\u304c\u300c192.168.1.20\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308a\u305f\u3044\uff01\u300d\u3068\u3044\u3046ARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/p>\n<p>\u2193 (\u540c\u3058\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306e\u5168\u3066\u306e\u6a5f\u5668\u306b\u5c4a\u304f)<\/p>\n<p>2. PC-B\u304c\u300c\u305d\u308c\u306f\u79c1\u306eIP\u30a2\u30c9\u30ec\u30b9\u3060\uff01\u79c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306fXX:XX:XX:XX:XX:XX\u3060\u3088\u300d\u3068\u3044\u3046ARP\u5fdc\u7b54\u3092\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\u3067\u8fd4\u4fe1<\/p>\n<p>\u2193<\/p>\n<p>3. PC-A\u304cPC-B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u5b66\u7fd2\u3057\u3001ARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58<\/p>\n<p>\u2193<\/p>\n<p>4. PC-A\u304cMAC\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066PC-B\u306b\u76f4\u63a5\u901a\u4fe1\u3092\u958b\u59cb<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d71\uff1aARP\u8981\u6c42\uff08ARP Request\uff09\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/h5>\n<p>\u4f8b\u3048\u3070\u3001\u3042\u306a\u305f\u306ePC\uff08PC-A\uff09\u304c\u3001\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u5225\u306ePC\uff08PC-B\uff09\u306b\u30c7\u30fc\u30bf\u3092\u9001\u308a\u305f\u3044\u3068\u3057\u307e\u3059\u3002PC-A\u306fPC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u4f8b: 192.168.1.20\uff09\u306f\u77e5\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5bfe\u5fdc\u3059\u308bMAC\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067PC-A\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u300cARP\u8981\u6c42\u300d\u30d1\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> MAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308a\u305f\u3044PC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08192.168.1.20\uff09<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u300cMAC\u30a2\u30c9\u30ec\u30b9\u306f\u5206\u304b\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u610f\u5473\u306e<strong>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8MAC\u30a2\u30c9\u30ec\u30b9\uff08FF:FF:FF:FF:FF:FF\uff09<\/strong><\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong> \u300cIP\u30a2\u30c9\u30ec\u30b9 192.168.1.20 \u3092\u6301\u3064\u6a5f\u5668\u306f\u3001\u305d\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\uff01\u300d<\/li>\n<\/ul>\n<p>\u3053\u306eARP\u8981\u6c42\u30d1\u30b1\u30c3\u30c8\u306f\u3001\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\uff08\u4f8b\u3048\u3070\u3001\u540c\u3058\u30eb\u30fc\u30bf\u306b\u63a5\u7d9a\u3055\u308c\u305f\u7bc4\u56f2\uff09\u306b\u3044\u308b\u5168\u3066\u306e\u6a5f\u5668\u306b\u5bfe\u3057\u3066<strong>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/strong>\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6559\u5ba4\u3067\u300c\u3007\u3007\u3055\u3093\u3001\u3044\u308b\uff1f\u300d\u3068\u5927\u58f0\u3067\u5c0b\u306d\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d72\uff1aARP\u5fdc\u7b54\uff08ARP Reply\uff09\u306e\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8<\/h5>\n<p>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3055\u308c\u305fARP\u8981\u6c42\u30d1\u30b1\u30c3\u30c8\u3092\u53d7\u3051\u53d6\u3063\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u5168\u3066\u306e\u6a5f\u5668\u306f\u3001\u307e\u305a\u81ea\u5206\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068ARP\u8981\u6c42\u30d1\u30b1\u30c3\u30c8\u5185\u306e\u300c\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\u300d\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002<br \/>\n\u3082\u3057\u3001\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u81ea\u5206\u306e\u3082\u306e\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u6a5f\u5668\uff08\u3053\u306e\u5834\u5408\u306fPC-B\uff09\u306f\u300c\u305d\u308c\u306f\u79c1\u306eIP\u30a2\u30c9\u30ec\u30b9\u3060\uff01\u300d\u3068\u5224\u65ad\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u300cARP\u5fdc\u7b54\u300d\u30d1\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u3066PC-A\u306b\u8fd4\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-B\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-B\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> ARP\u8981\u6c42\u3092\u9001\u3063\u3066\u304d\u305fPC-A\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> ARP\u8981\u6c42\u3092\u9001\u3063\u3066\u304d\u305fPC-A\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong> \u300cIP\u30a2\u30c9\u30ec\u30b9 192.168.1.20 \u3092\u6301\u3064\u306e\u306f\u79c1\u3067\u3059\uff01\u79c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f XX:XX:XX:XX:XX:XX \u3067\u3059\u3088\u3002\u300d<\/li>\n<\/ul>\n<p>\u3053\u306eARP\u5fdc\u7b54\u30d1\u30b1\u30c3\u30c8\u306f\u3001PC-A\u306b\u5bfe\u3057\u3066<strong>\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8<\/strong>\uff08\u7279\u5b9a\u306e1\u53f0\u306b\u306e\u307f\u9001\u4fe1\uff09\u3067\u9001\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u8cea\u554f\u3055\u308c\u305f\u3007\u3007\u3055\u3093\u304c\u300c\u79c1\u3060\u3088\uff01\u300d\u3068\u540d\u4e57\u308a\u51fa\u3066\u3001\u3042\u306a\u305f\u306b\u3060\u3051\u7b54\u3048\u3092\u4f1d\u3048\u308b\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u306d\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d73\uff1aARP\u30ad\u30e3\u30c3\u30b7\u30e5\u3078\u306e\u4fdd\u5b58<\/h5>\n<p>ARP\u5fdc\u7b54\u30d1\u30b1\u30c3\u30c8\u3092\u53d7\u3051\u53d6\u3063\u305fPC-A\u306f\u3001PC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u306e\u7d44\u3092\u5b66\u7fd2\u3057\u307e\u3059\u3002\u3053\u306e\u60c5\u5831\u306f\u3001PC\u306e\u30e1\u30e2\u30ea\u4e0a\u306b\u3042\u308b<strong>\u300cARP\u30ad\u30e3\u30c3\u30b7\u30e5\uff08ARP Table\uff09\u300d<\/strong>\u3068\u547c\u3070\u308c\u308b\u4e00\u6642\u7684\u306a\u8a18\u61b6\u9818\u57df\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<br \/>\nARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u305f\u60c5\u5831\u306f\u3001\u4e00\u5b9a\u671f\u9593\uff08\u6570\u79d2\u304b\u3089\u6570\u5206\uff09\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002\u6b21\u306b\u540c\u3058PC-B\u3068\u901a\u4fe1\u3059\u308b\u969b\u306b\u306f\u3001\u518d\u5ea6ARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u3053\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u308a\u51fa\u3057\u3066\u5229\u7528\u3059\u308b\u305f\u3081\u3001\u901a\u4fe1\u304c\u52b9\u7387\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d74\uff1aMAC\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u305f\u76f4\u63a5\u901a\u4fe1\u306e\u958b\u59cb<\/h5>\n<p>PC-A\u306fARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u305fPC-B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066\u3001\u76ee\u7684\u306e\u30c7\u30fc\u30bf\uff08\u4f8b\u3048\u3070Web\u30da\u30fc\u30b8\u306e\u8868\u793a\u30c7\u30fc\u30bf\u3084\u30d5\u30a1\u30a4\u30eb\u306a\u3069\uff09\u3092PC-B\u306b\u76f4\u63a5\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u308c\u3067\u3001\u7121\u4e8b\u306b\u901a\u4fe1\u304c\u78ba\u7acb\u3055\u308c\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<h4>ARP\u306e\u307e\u3068\u3081\u3068\u30dd\u30a4\u30f3\u30c8<\/h4>\n<ul>\n<li>ARP\u306f\u3001<strong>IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u89e3\u6c7a\u300d<\/strong>\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/li>\n<li>\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306e\u6a5f\u5668\u9593\u306e\u901a\u4fe1\u3067\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u300cARP\u8981\u6c42\u300d\u306f<strong>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/strong>\u3001\u300cARP\u5fdc\u7b54\u300d\u306f<strong>\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8<\/strong>\u3067\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u5b66\u7fd2\u3057\u305fIP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u306e\u7d44\u306f<strong>ARP\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>\u306b\u4e00\u6642\u7684\u306b\u4fdd\u5b58\u3055\u308c\u3001\u52b9\u7387\u7684\u306a\u901a\u4fe1\u306b\u8ca2\u732e\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3067ARP\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u306f\u30d0\u30c3\u30c1\u30ea\u3067\u3059\u306d\uff01\u3082\u3057\u3001\u307e\u3060\u7591\u554f\u304c\u3042\u308c\u3070\u9060\u616e\u306a\u304f\u8cea\u554f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306b\u3001RARP\u306e\u4ed5\u7d44\u307f\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>4. \u5927\u56f3\u89e3\uff1aRARP\u306e\u5168\u4f53\u50cf\u3068\u4ed5\u7d44\u307f<\/h3>\n<p>ARP\u304cIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u89e3\u6c7a\u300d\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001<strong>RARP\uff08Reverse Address Resolution Protocol\uff09<\/strong>\u306f\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u300c\u9006\uff08Reverse\uff09\u300d\u306e\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u3064\u307e\u308a\u3001<span class=\"marker\">MAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u300c\u89e3\u6c7a\u300d\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/span>\u3067\u3059\u3002<\/p>\n<p>\u300c\u3048\u3001MAC\u30a2\u30c9\u30ec\u30b9\u306f\u5206\u304b\u308b\u306e\u306b\u3001IP\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\u306a\u3093\u3066\u72b6\u6cc1\u304c\u3042\u308b\u306e\uff1f\u300d\u305d\u3046\u601d\u308f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002\u307e\u3055\u306b\u3001RARP\u306f\u7279\u5b9a\u306e\u72b6\u6cc1\u3067\u5fc5\u8981\u3068\u3055\u308c\u305f\u6280\u8853\u3060\u3063\u305f\u3093\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u52d5\u4f5c\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>RARP\u306e\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\uff1a\u9650\u3089\u308c\u305f\u72b6\u6cc1\u3067\u6d3b\u8e8d\u3057\u305f\u904e\u53bb\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n<p>RARP\u306f\u3001\u4e3b\u306b\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\uff08OS\u3084\u30c7\u30fc\u30bf\u4fdd\u5b58\u7528\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u6301\u305f\u306a\u3044\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\uff09\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3059\u308b\u969b\u306b\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u6a5f\u5668\u306f\u3001\u8d77\u52d5\u6642\u306b\u81ea\u8eab\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001HDD\u306a\u3069\u304c\u306a\u3044\u305f\u3081\u3001\u8a2d\u5b9a\u60c5\u5831\u3092\u6c38\u7d9a\u7684\u306b\u4fdd\u5b58\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>[\u56f3\u306e\u30a4\u30e1\u30fc\u30b8\uff1a\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6d41\u308c\u3092\u56f3\u3067\u8868\u73fe\u3057\u307e\u3059]<\/p>\n<p>\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3 (MAC\u30a2\u30c9\u30ec\u30b9: AA:AA:AA:AA:AA:AA) \u304c\u8d77\u52d5<\/p>\n<p>\u2193<\/p>\n<p>1. \u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u300c\u79c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306fAA:AA:AA:AA:AA:AA\u3060\u3051\u3069\u3001IP\u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\uff01\u300d\u3068\u3044\u3046RARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/p>\n<p>\u2193 (RARP\u30b5\u30fc\u30d0\u30fc\u304c\u5fdc\u7b54)<\/p>\n<p>2. RARP\u30b5\u30fc\u30d0\u30fc\u304c\u81ea\u8eab\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3001MAC\u30a2\u30c9\u30ec\u30b9AA:AA:AA:AA:AA:AA\u306b\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u7279\u5b9a (\u4f8b: 192.168.1.30)<\/p>\n<p>\u2193<\/p>\n<p>3. RARP\u30b5\u30fc\u30d0\u30fc\u304c\u300cMAC\u30a2\u30c9\u30ec\u30b9AA:AA:AA:AA:AA:AA\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f192.168.1.30\u3060\u3088\u300d\u3068\u3044\u3046RARP\u5fdc\u7b54\u3092\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\u3067\u8fd4\u4fe1<\/p>\n<p>\u2193<\/p>\n<p>4. \u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u304cIP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u3001\u901a\u4fe1\u3092\u958b\u59cb<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d71\uff1aRARP\u8981\u6c42\uff08RARP Request\uff09\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/h5>\n<p>\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u8d77\u52d5\u3059\u308b\u3068\u3001\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3069\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3046\u3079\u304d\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u3001\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u542b\u3093\u3060\u300cRARP\u8981\u6c42\u300d\u30d1\u30b1\u30c3\u30c8\u3092\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u306b\u5411\u3051\u3066<strong>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8MAC\u30a2\u30c9\u30ec\u30b9\uff08FF:FF:FF:FF:FF:FF\uff09<\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong> \u300c\u79c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f XX:XX:XX:XX:XX:XX \u3067\u3059\u3002\u79c1\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\uff01\u300d<\/li>\n<\/ul>\n<p>\u3053\u306e\u8981\u6c42\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e<strong>RARP\u30b5\u30fc\u30d0\u30fc<\/strong>\u3068\u547c\u3070\u308c\u308b\u7279\u5b9a\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5c4a\u304f\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d72\uff1aRARP\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u308bIP\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u7d22<\/h5>\n<p>RARP\u8981\u6c42\u3092\u53d7\u3051\u53d6\u3063\u305fRARP\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u81ea\u8eab\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08MAC\u30a2\u30c9\u30ec\u30b9\u3068IP\u30a2\u30c9\u30ec\u30b9\u306e\u5bfe\u5fdc\u8868\uff09\u3092\u691c\u7d22\u3057\u3001\u8981\u6c42\u5143MAC\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u63a2\u3057\u307e\u3059\u3002\u3053\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u3001\u901a\u5e38\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u8005\u304c\u624b\u52d5\u3067\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d73\uff1aRARP\u5fdc\u7b54\uff08RARP Reply\uff09\u306e\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8<\/h5>\n<p>RARP\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u304c\u898b\u3064\u304b\u308b\u3068\u3001\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092RARP\u8981\u6c42\u5143\u306e\u6a5f\u5668\u306b\u5bfe\u3057\u3066<strong>\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8<\/strong>\u3067\u300cRARP\u5fdc\u7b54\u300d\u3068\u3057\u3066\u8fd4\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> RARP\u30b5\u30fc\u30d0\u30fc\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> RARP\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> RARP\u8981\u6c42\u3092\u9001\u3063\u3066\u304d\u305f\u6a5f\u5668\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> RARP\u8981\u6c42\u3092\u9001\u3063\u3066\u304d\u305f\u6a5f\u5668\u306b\u5272\u308a\u5f53\u3066\u308bIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong> \u300c\u3042\u306a\u305f\u306eMAC\u30a2\u30c9\u30ec\u30b9 XX:XX:XX:XX:XX:XX \u306b\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9 192.168.1.30 \u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u300d<\/li>\n<\/ul>\n<h5>\u30b9\u30c6\u30c3\u30d74\uff1aIP\u30a2\u30c9\u30ec\u30b9\u306e\u53d6\u5f97\u3068\u901a\u4fe1\u958b\u59cb<\/h5>\n<p>RARP\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u63d0\u4f9b\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u8eab\u306e\u3082\u306e\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u306e\u901a\u4fe1\u3092\u958b\u59cb\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4>\u306a\u305cRARP\u306f\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305f\u306e\u304b\uff1f\uff1aDHCP\u306e\u767b\u5834<\/h4>\n<p>RARP\u306f\u3001\u767b\u5834\u5f53\u521d\u306f\u753b\u671f\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u305f\u304c\u3001\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>RARP\u30b5\u30fc\u30d0\u30fc\u304c<strong>\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306b\u5b58\u5728<\/strong>\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u3044\u3046\u5236\u7d04\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/li>\n<li>RARP\u306fIP\u30a2\u30c9\u30ec\u30b9\u3057\u304b\u63d0\u4f9b\u3067\u304d\u305a\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3084\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306a\u3069\u306e<strong>\u8ffd\u52a0\u60c5\u5831\u3092\u63d0\u4f9b\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/strong><\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u8ab2\u984c\u3092\u89e3\u6c7a\u3057\u3001\u3088\u308a\u9ad8\u6a5f\u80fd\u3067\u67d4\u8edf\u306aIP\u30a2\u30c9\u30ec\u30b9\u5272\u308a\u5f53\u3066\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u767b\u5834\u3057\u305f\u306e\u304c\u3001\u73fe\u5728\u4e3b\u6d41\u3068\u306a\u3063\u3066\u3044\u308b<strong>DHCP\uff08Dynamic Host Configuration Protocol\uff09<\/strong>\u3067\u3059\u3002DHCP\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3067\u306a\u304f\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3001DNS\u30b5\u30fc\u30d0\u30fc\u306e\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3042\u3089\u3086\u308b\u60c5\u5831\u3092\u81ea\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306bDHCP\u30b5\u30fc\u30d0\u30fc\u304c\u3042\u3063\u3066\u3082\u3001DHCP\u30ea\u30ec\u30fc\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306a\u3069\u306e\u6a5f\u80fd\u3092\u4f7f\u3048\u3070IP\u30a2\u30c9\u30ec\u30b9\u306e\u53d6\u5f97\u304c\u53ef\u80fd\u3067\u3059\u3002<br \/>\n\u3053\u306e\u305f\u3081\u3001RARP\u306fDHCP\u306b\u305d\u306e\u5f79\u5272\u3092\u8b72\u308a\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u307b\u3068\u3093\u3069\u898b\u304b\u3051\u308b\u3053\u3068\u304c\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>RARP\u3092\u5b66\u3076\u3053\u3068\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u3069\u306e\u3088\u3046\u306b\u9032\u5316\u3057\u3066\u304d\u305f\u304b\u3001\u305d\u3057\u3066\u3088\u308a\u826f\u3044\u89e3\u6c7a\u7b56\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u751f\u307e\u308c\u3066\u304d\u305f\u304b\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u826f\u3044\u4f8b\u3068\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n<h3>5. \u5927\u56f3\u89e3\uff1a\u30d7\u30ed\u30ad\u30b7ARP\u306e\u5168\u4f53\u50cf\u3068\u4ed5\u7d44\u307f<\/h3>\n<p>\u3055\u3066\u3001ARP\u306f\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306e\u6a5f\u5668\u540c\u58eb\u304cMAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u4f7f\u3046\u3001\u3068\u3044\u3046\u8a71\u3092\u3057\u307e\u3057\u305f\u3002\u3067\u306f\u3001\u3082\u3057\u901a\u4fe1\u3057\u305f\u3044\u76f8\u624b\u304c\u5225\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u5834\u5408\u306f\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f\u901a\u5e38\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9593\u306e\u901a\u4fe1\u306f\u30eb\u30fc\u30bf\u304c\u62c5\u5f53\u3057\u3001MAC\u30a2\u30c9\u30ec\u30b9\u306f\u30eb\u30fc\u30bf\u306e\u5148\u3067\u3057\u304b\u610f\u5473\u3092\u6301\u3061\u307e\u305b\u3093\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u3053\u3053\u3067\u767b\u5834\u3059\u308b\u306e\u304c<strong>\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09<\/strong>\u3067\u3059\u3002\u30d7\u30ed\u30ad\u30b7ARP\u306f\u3001<span class=\"marker\">\u30eb\u30fc\u30bf\u304c\u81ea\u8eab\u306e\u914d\u4e0b\u306b\u3042\u308b\u5225\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u6a5f\u5668\u306eMAC\u30a2\u30c9\u30ec\u30b9\u8981\u6c42\u306b\u5bfe\u3057\u3001\u307e\u308b\u3067\u305d\u306e\u6a5f\u5668\u304c\u81ea\u5206\u3068\u540c\u3058\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u304b\u306e\u3088\u3046\u306b\u300c\u4ee3\u7406\u3067\u300d\u5fdc\u7b54\u3059\u308b\u4ed5\u7d44\u307f<\/span>\u3067\u3059\u3002\u300cProxy\u300d\u306f\u300c\u4ee3\u7406\u300d\u3068\u3044\u3046\u610f\u5473\u306a\u306e\u3067\u3001\u307e\u3055\u306b\u30eb\u30fc\u30bf\u304c\u300c\u4ee3\u7406\u4eba\u300d\u3068\u3057\u3066\u632f\u308b\u821e\u3046\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u306d\u3002<\/p>\n<h4>\u30d7\u30ed\u30ad\u30b7ARP\u306e\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\uff1a\u30eb\u30fc\u30bf\u304c\u300c\u79c1\u304c\u4ee3\u7406\u4eba\u3067\u3059\uff01\u300d\u3068\u540d\u4e57\u308a\u51fa\u308b<\/h4>\n<p>\u30d7\u30ed\u30ad\u30b7ARP\u306f\u3001\u7279\u5b9a\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u306b\u304a\u3044\u3066\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u74b0\u5883\u3084\u3001\u30ec\u30ac\u30b7\u30fc\u306a\u6a5f\u5668\u304c\u5b58\u5728\u3059\u308b\u74b0\u5883\u306a\u3069\u3067\u5229\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u56f3\u3092\u60f3\u50cf\u3057\u306a\u304c\u3089\u8aad\u307f\u9032\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>[\u56f3\u306e\u30a4\u30e1\u30fc\u30b8\uff1a\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6d41\u308c\u3092\u56f3\u3067\u8868\u73fe\u3057\u307e\u3059]<\/p>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30afA: PC-A (192.168.1.10) &#8212; \u30eb\u30fc\u30bfR (192.168.1.1\/192.168.2.1) &#8212; \u30cd\u30c3\u30c8\u30ef\u30fc\u30afB: PC-B (192.168.2.20)<\/p>\n<p>\u2193<\/p>\n<p>1. PC-A\u304cPC-B\u306eIP\u30a2\u30c9\u30ec\u30b9(192.168.2.20)\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308a\u305f\u3044\u3068ARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3002<br \/>\nPC-A\u306fPC-B\u304c\u540c\u3058\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u3068\u300c\u52d8\u9055\u3044\u300d\u3057\u3066\u3044\u308b\u3002<\/p>\n<p>\u2193 (ARP\u8981\u6c42\u304c\u30eb\u30fc\u30bfR\u306b\u5c4a\u304f)<\/p>\n<p>2. \u30eb\u30fc\u30bfR\u304cARP\u8981\u6c42\u3092\u53d7\u3051\u53d6\u308b\u3002\u30eb\u30fc\u30bfR\u306fPC-B\u304c\u81ea\u8eab\u306e\u5225\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u914d\u4e0b\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30afB\uff09\u306b\u3044\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u308b\u3002<\/p>\n<p>\u2193<\/p>\n<p>3. \u30eb\u30fc\u30bfR\u306fPC-A\u306b\u5bfe\u3057\u3001\u300c192.168.2.20\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f\u79c1\uff08\u30eb\u30fc\u30bfR\uff09\u306eMAC\u30a2\u30c9\u30ec\u30b9\uff08XX:XX:XX:XX:XX:XX\uff09\u3060\u3088\u300d\u3068ARP\u5fdc\u7b54\u3092\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\u3067\u8fd4\u4fe1\u3002<\/p>\n<p>\u2193<\/p>\n<p>4. PC-A\u306f\u30eb\u30fc\u30bfR\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092PC-B\u306e\u3082\u306e\u3068\u52d8\u9055\u3044\u3057\u3066\u3001\u30c7\u30fc\u30bf\u3092\u30eb\u30fc\u30bfR\u306b\u9001\u4fe1\u3059\u308b\u3002<\/p>\n<p>\u2193<\/p>\n<p>5. \u30eb\u30fc\u30bfR\u304cPC-A\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u3092PC-B\u306b\u8ee2\u9001\u3059\u308b\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d71\uff1aARP\u8981\u6c42\uff08ARP Request\uff09\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\uff08\u8aa4\u89e3\u304c\u751f\u3058\u308b\uff09<\/h5>\n<p>PC-A\uff08\u4f8b: 192.168.1.10\uff09\u304c\u3001\u7570\u306a\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u306b\u3044\u308bPC-B\uff08\u4f8b: 192.168.2.20\uff09\u306b\u30c7\u30fc\u30bf\u3092\u9001\u308a\u305f\u3044\u3068\u3057\u307e\u3059\u3002\u901a\u5e38\u3001\u7570\u306a\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u3078\u306e\u901a\u4fe1\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\uff08\u30eb\u30fc\u30bf\uff09\u3092\u7d4c\u7531\u3057\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u4f55\u3089\u304b\u306e\u7406\u7531\u3067PC-A\u304cPC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08192.168.2.20\uff09\u304c\u300c\u81ea\u5206\u3068\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306b\u3042\u308b\u300d\u3068\u8aa4\u89e3\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u72b6\u6cc1\u3092\u60f3\u5b9a\u3057\u307e\u3059\uff08\u4f8b\u3048\u3070\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u306e\u8a2d\u5b9a\u30df\u30b9\u306a\u3069\uff09\u3002\u3053\u306e\u5834\u5408\u3001PC-A\u306fPC-B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u76f4\u63a5\u77e5\u308d\u3046\u3068\u3057\u3066\u3001\u901a\u5e38\u306eARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> MAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308a\u305f\u3044PC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08192.168.2.20\uff09<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> \u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8MAC\u30a2\u30c9\u30ec\u30b9\uff08FF:FF:FF:FF:FF:FF\uff09<\/li>\n<\/ul>\n<p>\u3053\u306eARP\u8981\u6c42\u306f\u3001PC-A\u3068\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306b\u3044\u308b\u5168\u3066\u306e\u6a5f\u5668\u306b\u5c4a\u304d\u307e\u3059\u3002\u5f53\u7136\u3001PC-B\u306f\u5225\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u305f\u3081\u3001\u3053\u306eARP\u8981\u6c42\u306b\u306f\u76f4\u63a5\u5fdc\u7b54\u3067\u304d\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u3053\u306eARP\u8981\u6c42\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u5883\u754c\u306b\u3044\u308b<strong>\u30eb\u30fc\u30bf<\/strong>\u306b\u5230\u9054\u3057\u307e\u3059\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d72\uff1a\u30eb\u30fc\u30bf\u306b\u3088\u308bARP\u8981\u6c42\u306e\u508d\u53d7\u3068\u5224\u65ad<\/h5>\n<p>ARP\u8981\u6c42\u3092\u53d7\u3051\u53d6\u3063\u305f\u30eb\u30fc\u30bf\u306f\u3001\u305d\u306e\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff08192.168.2.20\uff09\u304c\u300c\u81ea\u5206\u3068\u306f\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\uff08\u4f8b: 192.168.2.0\/24\uff09\u306b\u5b58\u5728\u3059\u308b\u6a5f\u5668\u300d\u306e\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u8a8d\u8b58\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u30eb\u30fc\u30bf\u306f\u3001\u300c\u3053\u306ePC-A\u306f\u3001\u672c\u5f53\u306f\u79c1\u306e\u5411\u3053\u3046\u5074\u306b\u3044\u308bPC-B\u3068\u901a\u4fe1\u3057\u305f\u3044\u3093\u3060\u306a\u3002\u3067\u3082\u3001\u540c\u3058\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u3068\u52d8\u9055\u3044\u3057\u3066\u3044\u308b\u3088\u3046\u3060\u3002\u3088\u3057\u3001\u79c1\u304cPC-B\u306e\u4ee3\u7406\u3092\u3057\u3066\u3042\u3052\u3088\u3046\uff01\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d73\uff1a\u30eb\u30fc\u30bf\u306b\u3088\u308b\u30d7\u30ed\u30ad\u30b7ARP\u5fdc\u7b54<\/h5>\n<p>\u30eb\u30fc\u30bf\u306f\u3001PC-A\u304b\u3089\u306eARP\u8981\u6c42\u306b\u5bfe\u3057\u3066\u3001PC-B\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306e\u4ee3\u308f\u308a\u306b\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u305f\u300cARP\u5fdc\u7b54\u300d\u3092PC-A\u306b\u8fd4\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-B\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u3001\u5b9b\u5148\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u540d\u4e57\u308b\u70b9\uff09<\/li>\n<li><strong>\u9001\u4fe1\u5143MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> <strong>\u30eb\u30fc\u30bf\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/strong><\/li>\n<li><strong>\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u5b9b\u5148MAC\u30a2\u30c9\u30ec\u30b9\uff1a<\/strong> PC-A\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong> \u300cIP\u30a2\u30c9\u30ec\u30b9 192.168.2.20 \u3092\u6301\u3064\u306e\u306f\u79c1\uff08\u30eb\u30fc\u30bf\uff09\u3067\u3059\uff01\u79c1\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306f YY:YY:YY:YY:YY:YY \u3067\u3059\u3088\u3002\u300d<\/li>\n<\/ul>\n<p>PC-A\u306f\u30eb\u30fc\u30bf\u304b\u3089\u306e\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u308b\u3068\u3001\u300c\u3042\u3042\u3001192.168.2.20\u306eMAC\u30a2\u30c9\u30ec\u30b9\u306fYY:YY:YY:YY:YY:YY\u306a\u3093\u3060\u306a\u300d\u3068\u4fe1\u3058\u8fbc\u307f\u3001\u305d\u306e\u60c5\u5831\u3092\u81ea\u8eab\u306eARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u30eb\u30fc\u30bf\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u4fdd\u5b58\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u304c\u3001PC-A\u306f\u305d\u308c\u3092\u610f\u8b58\u3057\u307e\u305b\u3093\u3002<\/p>\n<h5>\u30b9\u30c6\u30c3\u30d74\uff1a\u30eb\u30fc\u30bf\u3092\u4ecb\u3057\u305f\u901a\u4fe1\u306e\u78ba\u7acb<\/h5>\n<p>PC-A\u306f\u3001PC-B\u5b9b\u306e\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u969b\u3001ARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u305f\u30eb\u30fc\u30bf\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u5b9b\u5148\u3068\u3057\u3066\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u306f\u30eb\u30fc\u30bf\u306b\u5230\u9054\u3057\u307e\u3059\u3002<br \/>\n\u30eb\u30fc\u30bf\u306f\u3001\u53d7\u3051\u53d6\u3063\u305f\u30d5\u30ec\u30fc\u30e0\u306e\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\uff08192.168.2.20\uff09\u3092\u898b\u3066\u3001\u305d\u308c\u304c\u81ea\u8eab\u306e\u5225\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30afB\uff09\u914d\u4e0b\u306ePC-B\u5b9b\u3067\u3042\u308b\u3053\u3068\u3092\u8a8d\u8b58\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u30d5\u30ec\u30fc\u30e0\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092PC-B\u306e\u3082\u306e\u306b\u66f8\u304d\u63db\u3048\u3066\u3001PC-B\u3078\u8ee2\u9001\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001PC-A\u306f\u3042\u305f\u304b\u3082PC-B\u3068\u76f4\u63a5\u901a\u4fe1\u3057\u3066\u3044\u308b\u304b\u306e\u3088\u3046\u306b\u632f\u308b\u821e\u3044\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u9593\u306b\u30eb\u30fc\u30bf\u304c\u300c\u4ee3\u7406\u4eba\u300d\u3068\u3057\u3066\u4ecb\u5165\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n<h4>\u30d7\u30ed\u30ad\u30b7ARP\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8<\/h4>\n<h5>\u30e1\u30ea\u30c3\u30c8<\/h5>\n<ul>\n<li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306e\u7c21\u7d20\u5316\uff1a<\/strong> \u7279\u306b\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u5206\u5272\u3092\u305b\u305a\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u62e1\u5f35\u3057\u305f\u3044\u5834\u5408\u3084\u3001\u4e00\u90e8\u306e\u6a5f\u5668\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u8a2d\u5b9a\u3067\u304d\u306a\u3044\u30ec\u30ac\u30b7\u30fc\u306a\u74b0\u5883\u3067\u6709\u52b9\u3067\u3059\u3002\u65e2\u5b58\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306e\u8a2d\u5b9a\u5909\u66f4\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u306a\u304c\u3089\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u900f\u904e\u7684\u306a\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a<\/strong> \u901a\u4fe1\u3057\u3066\u3044\u308b\u30db\u30b9\u30c8\u306f\u3001\u9593\u306b\u30eb\u30fc\u30bf\u304c\u4ecb\u5728\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u8b58\u305b\u305a\u306b\u901a\u4fe1\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h5>\u30c7\u30e1\u30ea\u30c3\u30c8<\/h5>\n<ul>\n<li><strong>\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u5897\u52a0\uff1a<\/strong> \u7570\u306a\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u6a5f\u5668\u3078\u306e\u901a\u4fe1\u3067\u3082ARP\u8981\u6c42\u304c\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3055\u308c\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\uff1a<\/strong> \u30eb\u30fc\u30bf\u304c\u4ee3\u7406\u5fdc\u7b54\u3059\u308b\u305f\u3081\u3001\u672c\u6765\u5c4a\u304f\u3079\u304d\u3067\u306f\u306a\u3044ARP\u8981\u6c42\u306b\u3082\u5fdc\u7b54\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u61f8\u5ff5\u304c\u751f\u3058\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u60aa\u7528\u3055\u308c\u308b\u3068\u3001ARP\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306a\u3069\u306e\u653b\u6483\u306b\u7e4b\u304c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8907\u96d1\u5316\uff1a<\/strong> \u5b9f\u969b\u306b\u30eb\u30fc\u30bf\u304c\u4ecb\u5728\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u96a0\u853d\u3055\u308c\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u539f\u56e0\u7279\u5b9a\u304c\u96e3\u3057\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u73fe\u5728\u3067\u306f\u3001\u9069\u5207\u306b\u30b5\u30d6\u30cd\u30c3\u30c8\u3092\u8a2d\u8a08\u3057\u3001\u5404\u30db\u30b9\u30c8\u306b\u6b63\u3057\u3044\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u8a2d\u5b9a\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3042\u308b\u305f\u3081\u3001\u30d7\u30ed\u30ad\u30b7ARP\u306f\u7a4d\u6975\u7684\u306b\u5229\u7528\u3055\u308c\u308b\u3053\u3068\u306f\u5c11\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u7279\u5b9a\u306e\u72b6\u6cc1\u4e0b\u3067\u4e92\u63db\u6027\u3092\u7dad\u6301\u3057\u305f\u308a\u3001\u4e00\u6642\u7684\u306a\u5bfe\u7b56\u3068\u3057\u3066\u5229\u7528\u3055\u308c\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3067\u3001\u30d7\u30ed\u30ad\u30b7ARP\u306e\u5f79\u5272\u3068\u4ed5\u7d44\u307f\u3082\u30d0\u30c3\u30c1\u30ea\u3067\u3059\u306d\uff01\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u30893\u3064\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u9055\u3044\u3068\u3001\u305d\u308c\u305e\u308c\u306e\u4f7f\u3044\u5206\u3051\u306b\u3064\u3044\u3066\u6df1\u6398\u308a\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>6. \u306a\u305c\uff1f\u304c\u308f\u304b\u308b\u6df1\u6398\u308a\u89e3\u8aac\uff1a3\u3064\u306e\u6280\u8853\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/h3>\n<p>\u3053\u3053\u307e\u3067\u3067\u3001ARP\u3001RARP\u3001\u305d\u3057\u3066\u30d7\u30ed\u30ad\u30b7ARP\u305d\u308c\u305e\u308c\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272\u3068\u4ed5\u7d44\u307f\u3092\u5b66\u3093\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306f\u3059\u3079\u3066\u300c\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u300d\u3068\u3044\u3046\u5171\u901a\u306e\u76ee\u7684\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u300c\u65b9\u5411\u6027\u300d\u3084\u300c\u72b6\u6cc1\u300d\u306b\u304a\u3044\u3066\u5927\u304d\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3092\u660e\u78ba\u306b\u3057\u3001\u306a\u305c\u305d\u306e\u3088\u3046\u306a\u4f7f\u3044\u5206\u3051\u304c\u3055\u308c\u3066\u304d\u305f\u306e\u304b\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h4>ARP vs. RARP\uff1a\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u300c\u65b9\u5411\u300d\u304c\u9006\uff01<\/h4>\n<p>\u307e\u305a\u3001ARP\u3068RARP\u306e\u6c7a\u5b9a\u7684\u306a\u9055\u3044\u306f\u3001\u89e3\u6c7a\u3059\u308b\u30a2\u30c9\u30ec\u30b9\u306e\u300c\u65b9\u5411\u6027\u300d\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>ARP\uff08Address Resolution Protocol\uff09:<\/strong><br \/>\n<strong>IP\u30a2\u30c9\u30ec\u30b9 \u2192 MAC\u30a2\u30c9\u30ec\u30b9<\/strong> \u306e\u89e3\u6c7a\u3092\u884c\u3044\u307e\u3059\u3002\u6700\u3082\u4e00\u822c\u7684\u3067\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u65e5\u5e38\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001Web\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u5206\u304b\u3063\u3066\u3044\u308b\u3051\u308c\u3069\u3001\u305d\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u3067\u306e\u300c\u7269\u7406\u7684\u306a\u5b9b\u5148\uff08MAC\u30a2\u30c9\u30ec\u30b9\uff09\u300d\u304c\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002\u3042\u306a\u305f\u306ePC\u304cWeb\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u3082\u3001\u30eb\u30fc\u30bf\u3084Web\u30b5\u30fc\u30d0\u30fc\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092ARP\u3067\u89e3\u6c7a\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>RARP\uff08Reverse Address Resolution Protocol\uff09:<\/strong><br \/>\n<strong>MAC\u30a2\u30c9\u30ec\u30b9 \u2192 IP\u30a2\u30c9\u30ec\u30b9<\/strong> \u306e\u89e3\u6c7a\u3092\u884c\u3044\u307e\u3059\u3002ARP\u3068\u306f\u6587\u5b57\u901a\u308a\u300c\u9006\u300d\u306e\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u3067\u3059\u3002\u4e3b\u306b\u3001\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u3088\u3046\u306b\u3001\u81ea\u8eab\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u6c38\u7d9a\u7684\u306b\u4fdd\u5b58\u3067\u304d\u306a\u3044\u6a5f\u5668\u304c\u8d77\u52d5\u6642\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u6a5f\u80fd\u306e\u9650\u754c\uff08\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3084\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u60c5\u5831\u3092\u63d0\u4f9b\u3067\u304d\u306a\u3044\u306a\u3069\uff09\u304b\u3089\u3001\u3088\u308a\u9ad8\u6a5f\u80fd\u306a<strong>DHCP\uff08Dynamic Host Configuration Protocol\uff09<\/strong>\u306b\u53d6\u3063\u3066\u4ee3\u308f\u3089\u308c\u3001\u73fe\u5728\u3067\u306f\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002RARP\u306e\u300cR\u300d\u306f\u300cReverse\uff08\u9006\uff09\u300d\u3068\u899a\u3048\u308b\u3093\u3067\u3057\u305f\u306d\uff01<\/li>\n<\/ul>\n<p>\u8981\u3059\u308b\u306b\u3001IP\u30a2\u30c9\u30ec\u30b9\u306f\u5206\u304b\u3063\u3066\u3044\u308b\u3051\u3069MAC\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u300cARP\u300d\u3001MAC\u30a2\u30c9\u30ec\u30b9\u306f\u5206\u304b\u3063\u3066\u3044\u308b\u3051\u3069IP\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u300cRARP\u300d\u3068\u899a\u3048\u307e\u3057\u3087\u3046\u3002\u73fe\u4ee3\u3067\u306f\u5f8c\u8005\u306e\u30cb\u30fc\u30ba\u306fDHCP\u304c\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>ARP vs. \u30d7\u30ed\u30ad\u30b7ARP\uff1a\u8ab0\u304c\u300c\u5fdc\u7b54\u300d\u3059\u308b\u304b\u304c\u9055\u3046\uff01<\/h4>\n<p>\u6b21\u306b\u3001ARP\u3068\u30d7\u30ed\u30ad\u30b7ARP\u306e\u9055\u3044\u3067\u3059\u3002\u3069\u3061\u3089\u3082ARP\u3068\u3044\u3046\u540d\u524d\u304c\u4ed8\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u300c\u5fdc\u7b54\u8005\u300d\u306b\u5927\u304d\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>ARP:<\/strong><br \/>\nARP\u8981\u6c42\u306e\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u300c\u672c\u6765\u306e\u6a5f\u5668\u81ea\u8eab\u300d\u304c\u76f4\u63a5ARP\u5fdc\u7b54\u3092\u8fd4\u3057\u307e\u3059\u3002\u901a\u4fe1\u76f8\u624b\u304c\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306b\u3044\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09:<\/strong><br \/>\nARP\u8981\u6c42\u306e\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u6a5f\u5668\u304c\u3001\u8981\u6c42\u5143\u306e\u6a5f\u5668\u3068\u306f<strong>\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8<\/strong>\u306b\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u9593\u306b\u3044\u308b\u300c\u30eb\u30fc\u30bf\u304c\u4ee3\u7406\u3067\uff08Proxy\u3068\u3057\u3066\uff09\u5fdc\u7b54\u300d\u3057\u307e\u3059\u3002\u3042\u305f\u304b\u3082\u5b9b\u5148\u306e\u6a5f\u5668\u304c\u8981\u6c42\u5143\u3068\u540c\u3058\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u3044\u308b\u304b\u306e\u3088\u3046\u306b\u898b\u305b\u304b\u3051\u3001\u30eb\u30fc\u30bf\u304c\u901a\u4fe1\u3092\u4e2d\u7d99\u3059\u308b\u3053\u3068\u3067\u3001\u8a2d\u5b9a\u3092\u5909\u66f4\u305b\u305a\u306b\u7570\u306a\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u9593\u306e\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u30d7\u30ed\u30ad\u30b7ARP\u306f\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u306e\u67d4\u8edf\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u5897\u52a0\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8907\u96d1\u5316\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306e\u5897\u5927\u3068\u3044\u3063\u305f\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u3042\u308b\u305f\u3081\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u3067\u306f\u63a8\u5968\u3055\u308c\u308b\u3053\u3068\u306f\u5c11\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u9069\u5207\u306a\u30b5\u30d6\u30cd\u30c3\u30c8\u8a2d\u8a08\u3068\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u8a2d\u5b9a\u3092\u884c\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<h4>\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051<\/h4>\n<p>\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u77e5\u8b58\u306f\u3001\u5358\u306b\u8a66\u9a13\u5bfe\u7b56\u3068\u3057\u3066\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u3044\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>ARP:<\/strong><br \/>\nL2\u30b9\u30a4\u30c3\u30c1\u3084\u30eb\u30fc\u30bf\u3092\u4ecb\u3057\u305f\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u306e\u901a\u4fe1\u306b\u304a\u3044\u3066\u3001IP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u3001\u4eca\u3082\u306a\u304a<strong>\u57fa\u76e4\u3068\u3057\u3066\u4e0d\u53ef\u6b20\u306a\u30d7\u30ed\u30c8\u30b3\u30eb<\/strong>\u3067\u3059\u3002\u3082\u3057ARP\u304c\u306a\u3051\u308c\u3070\u3001IP\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3067\u306f\u7269\u7406\u7684\u306a\u30c7\u30fc\u30bf\u306e\u8ee2\u9001\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<li><strong>RARP:<\/strong><br \/>\n\u6b74\u53f2\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u306e\u9032\u5316\u3092\u77e5\u308b\u4e0a\u3067\u91cd\u8981\u3067\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u306e\u81ea\u52d5\u5272\u308a\u5f53\u3066\u306e\u30cb\u30fc\u30ba\u304cRARP\u304b\u3089DHCP\u3078\u3068\u767a\u5c55\u3057\u3066\u3044\u3063\u305f\u7d4c\u7def\u3092\u7406\u89e3\u3059\u308b\u52a9\u3051\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30d7\u30ed\u30ad\u30b7ARP:<\/strong><br \/>\n\u30ec\u30ac\u30b7\u30fc\u306a\u74b0\u5883\u3084\u7279\u6b8a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u3067\u4eca\u3082\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f<strong>\u975e\u63a8\u5968\u306e\u6280\u8853<\/strong>\u3067\u3059\u3002\u305d\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u7406\u89e3\u3057\u3001\u3088\u308a\u5805\u7262\u3067\u30bb\u30ad\u30e5\u30a2\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u8a08\u306e\u91cd\u8981\u6027\u3092\u5b66\u3076\u305f\u3081\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u305d\u308c\u305e\u308c\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u6301\u3064\u5f79\u5272\u3068\u3001\u305d\u306e\u6b74\u53f2\u7684\u80cc\u666f\u3084\u73fe\u4ee3\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u6df1\u304f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u5168\u4f53\u3092\u6349\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u306e\u904e\u53bb\u554f\u3092\u901a\u3057\u3066\u3001\u3053\u308c\u3089\u306e\u77e5\u8b58\u304c\u3069\u306e\u3088\u3046\u306b\u554f\u308f\u308c\u308b\u306e\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>7. \u53b3\u9078\u904e\u53bb\u554f\u3068\u601d\u8003\u30c8\u30ec\u30fc\u30b9<\/h3>\n<p>\u3055\u3066\u3001ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u306e\u77e5\u8b58\u3092\u6df1\u3081\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6982\u5ff5\u304c\u3069\u306e\u3088\u3046\u306b\u51fa\u984c\u3055\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u3053\u3053\u3067\u306f\u3001\u904e\u53bb\u554f\u3092\u53b3\u9078\u3057\u3001\u5358\u306b\u89e3\u7b54\u3092\u63d0\u793a\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u6b63\u89e3\u306b\u305f\u3069\u308a\u7740\u304f\u307e\u3067\u306e\u300c\u601d\u8003\u306e\u30d7\u30ed\u30bb\u30b9\u300d\u3092\u4e00\u7dd2\u306b\u305f\u3069\u3063\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u8a66\u9a13\u3067\u306f\u3001\u77e5\u8b58\u304c\u3042\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u77e5\u8b58\u3092\u4f7f\u3063\u3066\u554f\u984c\u3092\u5206\u6790\u3057\u3001\u8ad6\u7406\u7684\u306b\u8003\u3048\u308b\u529b\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<h4>\u904e\u53bb\u554f1\uff1aARP\u306e\u57fa\u672c\u7684\u306a\u7406\u89e3\u3092\u554f\u3046\u554f\u984c<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\nIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u5bfe\u5fdc\u4ed8\u3051\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3069\u308c\u304b\u3002<\/p>\n<p>\u30a2. ARP<\/p>\n<p>\u30a4. RARP<\/p>\n<p>\u30a6. ICMP<\/p>\n<p>\u30a8. DHCP<\/p>\n<p><strong>\u3010\u601d\u8003\u30c8\u30ec\u30fc\u30b9\u3011<\/strong><\/p>\n<ol>\n<li>\u3053\u306e\u554f\u984c\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u306e\u300c\u5bfe\u5fdc\u4ed8\u3051\u300d\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/li>\n<li>\u9078\u629e\u80a2\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\n<ul>\n<li>\u30a2. ARP\uff08Address Resolution Protocol\uff09\uff1aIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u305f\u306d\u3002\u307e\u3055\u306b\u4eca\u56de\u306e\u30c6\u30fc\u30de\u306e\u4e2d\u5fc3\u3067\u3059\u3002<\/li>\n<li>\u30a4. RARP\uff08Reverse Address Resolution Protocol\uff09\uff1aMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u3001\u9006\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u305f\u3002<\/li>\n<li>\u30a6. ICMP\uff08Internet Control Message Protocol\uff09\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u30a8\u30e9\u30fc\u3084\u8a3a\u65ad\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\uff08\u4f8b: ping\u30b3\u30de\u30f3\u30c9\u306a\u3069\uff09<\/li>\n<li>\u30a8. DHCP\uff08Dynamic Host Configuration Protocol\uff09\uff1aIP\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u3092\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3057\u305f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u554f\u984c\u6587\u306e\u300cIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u5bfe\u5fdc\u4ed8\u3051\u308b\u300d\u3068\u3044\u3046\u8981\u6c42\u306b\u5408\u81f4\u3059\u308b\u306e\u306f\u3001\u30a2\u306eARP\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n<p><strong>\u3010\u6b63\u89e3\u3011<\/strong> \u30a2<\/p>\n<h4>\u904e\u53bb\u554f2\uff1aRARP\u306e\u5f79\u5272\u3068\u4ee3\u66ff\u6280\u8853\u306b\u95a2\u3059\u308b\u554f\u984c<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\n\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u73fe\u5728\u3067\u306fDHCP\u306b\u3088\u3063\u3066\u4ee3\u66ff\u3055\u308c\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3069\u308c\u304b\u3002<\/p>\n<p>\u30a2. DNS<\/p>\n<p>\u30a4. FTP<\/p>\n<p>\u30a6. RARP<\/p>\n<p>\u30a8. SNMP<\/p>\n<p><strong>\u3010\u601d\u8003\u30c8\u30ec\u30fc\u30b9\u3011<\/strong><\/p>\n<ol>\n<li>\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u300c\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u300d\u300cDHCP\u306b\u3088\u3063\u3066\u4ee3\u66ff\u3055\u308c\u3066\u3044\u308b\u300d\u3067\u3059\u3002<\/li>\n<li>\u9078\u629e\u80a2\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\n<ul>\n<li>\u30a2. DNS\uff08Domain Name System\uff09\uff1a\u30c9\u30e1\u30a4\u30f3\u540d\uff08\u4f8b: example.com\uff09\u3092IP\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002<\/li>\n<li>\u30a4. FTP\uff08File Transfer Protocol\uff09\uff1a\u30d5\u30a1\u30a4\u30eb\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/li>\n<li>\u30a6. RARP\uff08Reverse Address Resolution Protocol\uff09\uff1aMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001DHCP\u306b\u4ee3\u66ff\u3055\u308c\u305f\u3053\u3068\u3092\u5b66\u3073\u307e\u3057\u305f\u3002<\/li>\n<li>\u30a8. SNMP\uff08Simple Network Management Protocol\uff09\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3092\u76e3\u8996\u30fb\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u554f\u984c\u6587\u306e\u6761\u4ef6\u3092\u3059\u3079\u3066\u6e80\u305f\u3059\u306e\u306f\u3001\u30a6\u306eRARP\u3067\u3059\u3002<\/li>\n<\/ol>\n<p><strong>\u3010\u6b63\u89e3\u3011<\/strong> \u30a6<\/p>\n<h4>\u904e\u53bb\u554f3\uff1a\u30d7\u30ed\u30ad\u30b7ARP\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u554f\u984c\uff08\u5fdc\u7528\uff09<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\n\u3042\u308b\u30db\u30b9\u30c8\u304c\u3001\u7570\u306a\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u306b\u5b58\u5728\u3059\u308b\u30db\u30b9\u30c8\u306b\u5bfe\u3057\u3066ARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3057\u305f\u3068\u304d\u3001\u305d\u306e\u30b5\u30d6\u30cd\u30c3\u30c8\u9593\u306e\u901a\u4fe1\u3092\u4e2d\u7d99\u3059\u308b\u30eb\u30fc\u30bf\u304c\u3001\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3067\u5fdc\u7b54\u3059\u308b\u3053\u3068\u3067\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3092\u4f55\u3068\u547c\u3076\u304b\u3002<\/p>\n<p>\u30a2. \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30cf\u30d6<\/p>\n<p>\u30a4. \u30d7\u30ed\u30ad\u30b7ARP<\/p>\n<p>\u30a6. VRRP<\/p>\n<p>\u30a8. NAT<\/p>\n<p><strong>\u3010\u601d\u8003\u30c8\u30ec\u30fc\u30b9\u3011<\/strong><\/p>\n<ol>\n<li>\u3053\u306e\u554f\u984c\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u300c\u7570\u306a\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u300d\u300cARP\u8981\u6c42\u3092\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u300d\u300c\u30eb\u30fc\u30bf\u304c\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3067\u5fdc\u7b54\u300d\u300c\u4e2d\u7d99\u3059\u308b\u300d\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u3059\u3002<\/li>\n<li>\u300cARP\u300d\u3068\u300c\u4e2d\u7d99\uff08\u4ee3\u7406\uff09\u300d\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n<li>\u9078\u629e\u80a2\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002\n<ul>\n<li>\u30a2. \u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30cf\u30d6\uff1aL2\uff08\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\uff09\u3067\u52d5\u4f5c\u3057\u3001MAC\u30a2\u30c9\u30ec\u30b9\u306b\u57fa\u3065\u3044\u3066\u30d5\u30ec\u30fc\u30e0\u3092\u8ee2\u9001\u3059\u308b\u6a5f\u5668\u3067\u3059\u304c\u3001\u7570\u306a\u308b\u30b5\u30d6\u30cd\u30c3\u30c8\u9593\u306e\u901a\u4fe1\u3092\u4e2d\u7d99\u3057\u305f\u308a\u3001ARP\u8981\u6c42\u306b\u4ee3\u7406\u5fdc\u7b54\u3057\u305f\u308a\u3059\u308b\u6a5f\u80fd\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u30a4. \u30d7\u30ed\u30ad\u30b7ARP\uff1a\u307e\u3055\u306b\u300c\u4ee3\u7406\uff08Proxy\uff09\u300d\u3068\u3057\u3066\u30eb\u30fc\u30bf\u304cARP\u5fdc\u7b54\u3092\u884c\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/li>\n<li>\u30a6. VRRP\uff08Virtual Router Redundancy Protocol\uff09\uff1a\u8907\u6570\u306e\u30eb\u30fc\u30bf\u3092\u4eee\u60f3\u5316\u3057\u3066\u5197\u9577\u6027\u3092\u6301\u305f\u305b\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002ARP\u3068\u306f\u76f4\u63a5\u95a2\u4fc2\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u30a8. NAT\uff08Network Address Translation\uff09\uff1a\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u30a2\u30c9\u30ec\u30b9\u3068\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u5909\u63db\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u554f\u984c\u6587\u306e\u72b6\u6cc1\u306b\u5b8c\u5168\u306b\u5408\u81f4\u3059\u308b\u306e\u306f\u3001\u30a4\u306e\u30d7\u30ed\u30ad\u30b7ARP\u3067\u3059\u3002<\/li>\n<\/ol>\n<p><strong>\u3010\u6b63\u89e3\u3011<\/strong> \u30a4<\/p>\n<p>\u3053\u308c\u3089\u306e\u904e\u53bb\u554f\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u306e\u305d\u308c\u305e\u308c\u306e\u5f79\u5272\u3068\u3001\u4ed6\u306e\u95a2\u9023\u6280\u8853\u3068\u306e\u9055\u3044\u3092\u660e\u78ba\u306b\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u3001\u73fe\u4ee3\u3067\u306f\u4f7f\u308f\u308c\u306a\u304f\u306a\u3063\u305fRARP\u3084\u3001\u7279\u6b8a\u306a\u30d7\u30ed\u30ad\u30b7ARP\u306b\u3064\u3044\u3066\u3082\u3001\u305d\u306e\u6982\u5ff5\u3084\u4ee3\u66ff\u6280\u8853\u3068\u306e\u6bd4\u8f03\u304c\u554f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5358\u8a9e\u306e\u610f\u5473\u3060\u3051\u3067\u306a\u304f\u3001\u300c\u306a\u305c\u305d\u308c\u304c\u5b58\u5728\u3059\u308b\u306e\u304b\u300d\u300c\u3069\u3093\u306a\u72b6\u6cc1\u3067\u4f7f\u3046\u306e\u304b\u300d\u3068\u3044\u3046\u80cc\u666f\u307e\u3067\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u5fdc\u7528\u529b\u304c\u8eab\u306b\u3064\u304d\u307e\u3059\u3088\u3002<\/p>\n<h3>8. \u672a\u6765\u3092\u4e88\u6e2c\u3059\u308b\u51fa\u984c\u4e88\u60f3<\/h3>\n<p>\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u306f\u3001\u5358\u306a\u308b\u77e5\u8b58\u306e\u8a70\u3081\u8fbc\u307f\u3060\u3051\u3067\u306a\u304f\u3001IT\u306e\u6700\u65b0\u30c8\u30ec\u30f3\u30c9\u3084\u793e\u4f1a\u306e\u5909\u5316\u3092\u610f\u8b58\u3057\u305f\u51fa\u984c\u304c\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u3068\u3044\u3063\u305f\u57fa\u790e\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3082\u3001\u65b0\u3057\u3044\u6280\u8853\u3084\u74b0\u5883\u3068\u306e\u95a2\u9023\u3067\u3001\u3088\u308a\u5fdc\u7528\u7684\u306a\u5f62\u3067\u554f\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u4eca\u5f8c\u306e\u51fa\u984c\u304c\u4e88\u60f3\u3055\u308c\u308b\u30dd\u30a4\u30f3\u30c8\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>\u4e88\u6e2c1\uff1aIPv6\u74b0\u5883\u306b\u304a\u3051\u308b\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u7406\u89e3<\/h4>\n<p>\u73fe\u5728\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u300cIPv4\u300d\u304c\u4e3b\u6d41\u3067\u3059\u304c\u3001\u30a2\u30c9\u30ec\u30b9\u67af\u6e07\u306e\u554f\u984c\u304b\u3089\u300cIPv6\u300d\u3078\u306e\u79fb\u884c\u304c\u9032\u3093\u3067\u3044\u307e\u3059\u3002IPv6\u306b\u306f\u3001IPv4\u306b\u304a\u3051\u308bARP\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u300c\u8fd1\u96a3\u63a2\u7d22\u30d7\u30ed\u30c8\u30b3\u30eb\uff08Neighbor Discovery Protocol: NDP\uff09\u300d\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002NDP\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\uff08ARP\u306b\u76f8\u5f53\uff09\u3001\u91cd\u8907\u30a2\u30c9\u30ec\u30b9\u691c\u51fa\u3001\u30eb\u30fc\u30bf\u63a2\u7d22\u306a\u3069\u3001ARP\u3088\u308a\u3082\u591a\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4e88\u60f3\u3055\u308c\u308b\u51fa\u984c\u5f62\u5f0f\uff1a<\/strong>\n<ul>\n<li>IPv4\u306eARP\u3068IPv6\u306eNDP\u306e\u9055\u3044\u3001\u7279\u306b\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u304a\u3051\u308b\u76f8\u9055\u70b9\u3092\u554f\u3046\u554f\u984c\u3002<\/li>\n<li>IPv6\u306b\u304a\u3051\u308bMAC\u30a2\u30c9\u30ec\u30b9\u306e\u81ea\u52d5\u751f\u6210\uff08EUI-64\u5f62\u5f0f\u306a\u3069\uff09\u3068\u3001\u305d\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u8003\u616e\u70b9\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<li>NDP\u3092\u7528\u3044\u305f\u91cd\u8907\u30a2\u30c9\u30ec\u30b9\u691c\u51fa\uff08DAD\uff09\u306e\u4ed5\u7d44\u307f\u3084\u3001\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u30a2\u30c9\u30ec\u30b9\u81ea\u52d5\u8a2d\u5b9a\uff08SLAAC\uff09\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>\n<ul>\n<li>NDP\u306e\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u3068\u3001\u305d\u308c\u304cIPv4\u306eARP\u3068\u3069\u306e\u3088\u3046\u306b\u7570\u306a\u308b\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u3002<\/li>\n<li>IPv6\u306b\u304a\u3051\u308b\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066\u65b9\u6cd5\uff08SLAAC\u3001DHCPv6\uff09\u3068\u3001NDP\u304c\u305d\u308c\u305e\u308c\u3067\u3069\u306e\u3088\u3046\u306b\u5229\u7528\u3055\u308c\u308b\u304b\u3092\u628a\u63e1\u3059\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u4e88\u6e2c2\uff1a\u30af\u30e9\u30a6\u30c9\u30fb\u4eee\u60f3\u5316\u74b0\u5883\u306b\u304a\u3051\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6319\u52d5<\/h4>\n<p>\u30af\u30e9\u30a6\u30c9\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3084\u4eee\u60f3\u5316\u6280\u8853\u306e\u666e\u53ca\u306b\u3088\u308a\u3001\u7269\u7406\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3060\u3051\u3067\u306a\u304f\u3001\u4eee\u60f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u306e\u901a\u4fe1\u306e\u4ed5\u7d44\u307f\u3082\u91cd\u8981\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4eee\u60f3\u30de\u30b7\u30f3\u9593\u306e\u901a\u4fe1\u3084\u3001\u4eee\u60f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u7269\u7406\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9023\u643a\u306b\u304a\u3044\u3066\u3001ARP\u306a\u3069\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u304c\u554f\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4e88\u60f3\u3055\u308c\u308b\u51fa\u984c\u5f62\u5f0f\uff1a<\/strong>\n<ul>\n<li>\u4eee\u60f3\u30b9\u30a4\u30c3\u30c1\u3084\u4eee\u60f3\u30eb\u30fc\u30bf\u304cARP\u8981\u6c42\u30fb\u5fdc\u7b54\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u308b\u304b\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<li>\u7279\u5b9a\u306e\u4eee\u60f3\u5316\u6280\u8853\uff08\u4f8b: VMware NSX, OpenStack Neutron\u306a\u3069\uff09\u306b\u304a\u3051\u308bMAC\u30a2\u30c9\u30ec\u30b9\u5b66\u7fd2\u3084ARP\u306e\u6319\u52d5\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<li>\u30b3\u30f3\u30c6\u30ca\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08Docker, Kubernetes\u306a\u3069\uff09\u306b\u304a\u3051\u308b\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u306e\u4ed5\u7d44\u307f\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>\n<ul>\n<li>\u4eee\u60f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u672c\u69cb\u6210\u3068\u3001\u305d\u308c\u304c\u7269\u7406\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u3069\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3055\u308c\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3002<\/li>\n<li>\u4eee\u60f3\u74b0\u5883\u306b\u304a\u3051\u308bMAC\u30a2\u30c9\u30ec\u30b9\u306e\u6271\u3044\uff08MAC\u30a2\u30c9\u30ec\u30b9\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u5bfe\u7b56\u306a\u3069\uff09\u306b\u3064\u3044\u3066\u3082\u610f\u8b58\u3057\u3066\u304a\u304f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u4e88\u6e2c3\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u306e\u9023\u643a<\/h4>\n<p>ARP\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306e\u3088\u3046\u306b\u3001ARP\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u8106\u5f31\u6027\u3092\u6301\u3064\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3082\u3042\u308a\u307e\u3059\u3002\u6700\u65b0\u306e\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u52d5\u5411\u3092\u8e0f\u307e\u3048\u3001ARP\u3084\u95a2\u9023\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u60aa\u7528\u3055\u308c\u308b\u30b1\u30fc\u30b9\u3068\u3001\u305d\u306e\u5bfe\u7b56\u304c\u554f\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4e88\u60f3\u3055\u308c\u308b\u51fa\u984c\u5f62\u5f0f\uff1a<\/strong>\n<ul>\n<li>ARP\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u3084MAC\u30a2\u30c9\u30ec\u30b9\u30d5\u30e9\u30c3\u30c7\u30a3\u30f3\u30b0\u3068\u3044\u3063\u305f\u653b\u6483\u306e\u624b\u6cd5\u3068\u3001\u305d\u308c\u3089\u306b\u5bfe\u3059\u308b\u5bfe\u7b56\u6280\u8853\uff08DHCP\u30b9\u30cc\u30fc\u30d4\u30f3\u30b0\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30afARP\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\u306a\u3069\uff09\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\uff08NAC\uff09\u3084\u691c\u75ab\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u3001MAC\u30a2\u30c9\u30ec\u30b9\u60c5\u5831\u304c\u3069\u306e\u3088\u3046\u306b\u6d3b\u7528\u3055\u308c\u308b\u304b\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<li>\u30bc\u30ed\u30c8\u30e9\u30b9\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6982\u5ff5\u306b\u304a\u3044\u3066\u3001ARP\u306e\u3088\u3046\u306a\u30ed\u30fc\u30ab\u30eb\u901a\u4fe1\u306e\u4fe1\u983c\u6027\u304c\u3069\u306e\u3088\u3046\u306b\u6271\u308f\u308c\u308b\u304b\u306b\u95a2\u3059\u308b\u554f\u984c\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>\n<ul>\n<li>ARP\u306e\u8106\u5f31\u6027\u3068\u3001\u305d\u308c\u306b\u5bfe\u3059\u308b\u5177\u4f53\u7684\u306a\u9632\u5fa1\u7b56\u3092\u30bb\u30c3\u30c8\u3067\u7406\u89e3\u3059\u308b\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\uff08\u30b9\u30a4\u30c3\u30c1\u3001\u30eb\u30fc\u30bf\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306a\u3069\uff09\u304c\u63d0\u4f9b\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3068\u3001ARP\u306a\u3069\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u3069\u306e\u3088\u3046\u306b\u9023\u643a\u3059\u308b\u304b\u3092\u628a\u63e1\u3059\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u51fa\u984c\u4e88\u60f3\u306f\u3001\u57fa\u790e\u77e5\u8b58\u3092\u30d9\u30fc\u30b9\u306b\u5fdc\u7528\u529b\u3092\u8a66\u3059\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\u5358\u306b\u5404\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6a5f\u80fd\u3092\u899a\u3048\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u300c\u306a\u305c\u3053\u306e\u6280\u8853\u304c\u751f\u307e\u308c\u305f\u306e\u304b\u300d\u300c\u3069\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306e\u304b\u300d\u300c\u65b0\u3057\u3044\u6280\u8853\u3068\u3069\u3046\u95a2\u4fc2\u3059\u308b\u306e\u304b\u300d\u3068\u3044\u3046\u8996\u70b9\u3092\u6301\u3063\u3066\u5b66\u7fd2\u3092\u9032\u3081\u308b\u3053\u3068\u3067\u3001\u3069\u306e\u3088\u3046\u306a\u5f62\u5f0f\u306e\u554f\u984c\u306b\u3082\u5bfe\u5fdc\u3067\u304d\u308b\u529b\u304c\u8eab\u306b\u3064\u304f\u306f\u305a\u3067\u3059\u3002\u9811\u5f35\u3063\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h3>9. \u3042\u306a\u305f\u3060\u3051\u306e\u5b66\u7fd2\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\uff1a\u77e5\u8b58\u3092\u5e83\u3052\u3001\u6df1\u3081\u308b\u65c5\u3078<\/h3>\n<p>ARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u306e\u57fa\u672c\u304b\u3089\u5fdc\u7528\u3001\u305d\u3057\u3066\u8a66\u9a13\u3067\u306e\u554f\u308f\u308c\u65b9\u307e\u3067\u3001\u304b\u306a\u308a\u306e\u60c5\u5831\u3092\u5438\u53ce\u3055\u308c\u305f\u3053\u3068\u3068\u601d\u3044\u307e\u3059\u3002\u3067\u3059\u304c\u3001IT\u306e\u4e16\u754c\u306f\u65e5\u9032\u6708\u6b69\u3002\u4eca\u65e5\u5b66\u3093\u3060\u77e5\u8b58\u3092\u571f\u53f0\u306b\u3001\u3055\u3089\u306b\u5b66\u7fd2\u3092\u6df1\u3081\u3001\u5e83\u3052\u3066\u3044\u304f\u3053\u3068\u304c\u3001\u771f\u306e\u300cIT\u4eba\u6750\u300d\u3078\u306e\u9053\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u3042\u306a\u305f\u306e\u5b66\u7fd2\u3092\u6b21\u306e\u30b9\u30c6\u30fc\u30b8\u3078\u3068\u9032\u3081\u308b\u305f\u3081\u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\u3092\u63d0\u6848\u3057\u307e\u3059\u3002<\/p>\n<h4>\u30b9\u30c6\u30c3\u30d71\uff1a\u57fa\u672c\u306e\u518d\u78ba\u8a8d\u3068\u5b9a\u7740<\/h4>\n<p>\u307e\u305a\u306f\u3001\u4eca\u56de\u5b66\u3093\u3060\u57fa\u790e\u77e5\u8b58\u3092\u3057\u3063\u304b\u308a\u3068\u5b9a\u7740\u3055\u305b\u308b\u3053\u3068\u304c\u6700\u512a\u5148\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u70b9\u3092\u610f\u8b58\u3057\u3066\u5fa9\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><strong>ARP\u306e\u5b8c\u74a7\u306a\u7406\u89e3:<\/strong> IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u4ed5\u7d44\u307f\uff08\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u8981\u6c42\u3001\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\u5fdc\u7b54\u3001ARP\u30ad\u30e3\u30c3\u30b7\u30e5\uff09\u3092\u3001\u4f55\u3082\u898b\u305a\u306b\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>RARP\u306e\u6b74\u53f2\u7684\u610f\u7fa9:<\/strong> MAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u5f79\u5272\u3068\u3001\u306a\u305cDHCP\u306b\u7f6e\u304d\u63db\u308f\u3063\u305f\u306e\u304b\u306e\u80cc\u666f\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002RARP\u81ea\u4f53\u306f\u53e4\u304f\u3066\u3082\u3001\u6280\u8853\u306e\u9032\u5316\u306e\u7cfb\u8b5c\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u91cd\u8981\u3067\u3059\u3002<\/li>\n<li><strong>\u30d7\u30ed\u30ad\u30b7ARP\u306e\u7279\u6b8a\u6027\u3068\u30c7\u30e1\u30ea\u30c3\u30c8:<\/strong> \u30eb\u30fc\u30bf\u304c\u4ee3\u7406\u5fdc\u7b54\u3059\u308b\u4ed5\u7d44\u307f\u3068\u3001\u305d\u308c\u304c\u3069\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u6301\u3064\u306e\u304b\u3092\u3001\u5177\u4f53\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u306a\u305c\u4e00\u822c\u7684\u306b\u63a8\u5968\u3055\u308c\u306a\u3044\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n<li><strong>\u904e\u53bb\u554f\u6f14\u7fd2:<\/strong> \u518d\u5ea6\u3001\u4eca\u56de\u6271\u3063\u305f\u904e\u53bb\u554f\u3084\u3001\u3054\u81ea\u8eab\u3067\u63a2\u3057\u305f\u95a2\u9023\u904e\u53bb\u554f\u3092\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u6b63\u89e3\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u306a\u305c\u305d\u306e\u9078\u629e\u80a2\u304c\u6b63\u89e3\u3067\u3001\u4ed6\u306e\u9078\u629e\u80a2\u304c\u9593\u9055\u3044\u306a\u306e\u304b\u3092\u660e\u78ba\u306b\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u76ee\u6a19\u3067\u3059\u3002<\/li>\n<\/ul>\n<h4>\u30b9\u30c6\u30c3\u30d72\uff1a\u95a2\u9023\u6280\u8853\u3078\u306e\u77e5\u8b58\u62e1\u5f35<\/h4>\n<p>ARP\u306a\u3069\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u4ed6\u306e\u591a\u304f\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u3068\u5bc6\u63a5\u306b\u9023\u643a\u3057\u3066\u3044\u307e\u3059\u3002\u95a2\u9023\u3059\u308b\u6280\u8853\u306b\u8996\u91ce\u3092\u5e83\u3052\u308b\u3053\u3068\u3067\u3001\u77e5\u8b58\u304c\u300c\u70b9\u300d\u3067\u306f\u306a\u304f\u300c\u7dda\u300d\u3068\u3057\u3066\u7e4b\u304c\u308a\u3001\u3088\u308a\u6df1\u3044\u7406\u89e3\u306b\u7e4b\u304c\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>DHCP\u306e\u5fb9\u5e95\u7406\u89e3:<\/strong> RARP\u306e\u4ee3\u66ff\u3068\u3057\u3066\u91cd\u8981\u306aDHCP\u306e\u4ed5\u7d44\u307f\uff08Discover, Offer, Request, ACK\u306eDORA\u30d7\u30ed\u30bb\u30b9\u3001\u30ea\u30fc\u30b9\u671f\u9593\u3001DHCP\u30ea\u30ec\u30fc\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u306a\u3069\uff09\u3092\u6df1\u304f\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0:<\/strong> \u30eb\u30fc\u30bf\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u6a5f\u80fd\u3068\u30b9\u30a4\u30c3\u30c1\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u6a5f\u80fd\u304c\u3001\u305d\u308c\u305e\u308cIP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u518d\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u7279\u306bL3\u30b9\u30a4\u30c3\u30c1\uff08\u30ec\u30a4\u30e43\u30b9\u30a4\u30c3\u30c1\uff09\u306e\u5f79\u5272\u3082\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/li>\n<li><strong>IPv6\u306e\u8fd1\u96a3\u63a2\u7d22\u30d7\u30ed\u30c8\u30b3\u30eb\uff08NDP\uff09:<\/strong> \u672a\u6765\u3092\u4e88\u6e2c\u3059\u308b\u51fa\u984c\u4e88\u60f3\u3067\u3082\u89e6\u308c\u307e\u3057\u305f\u304c\u3001IPv6\u74b0\u5883\u3067\u306fARP\u306e\u4ee3\u308f\u308a\u306bNDP\u304c\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002NDP\u306e\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\uff08NA\/NS\uff09\u3001\u30eb\u30fc\u30bf\u63a2\u7d22\uff08RA\/RS\uff09\u3068\u3044\u3063\u305f\u6a5f\u80fd\u3092\u5b66\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3:<\/strong> ARP\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306e\u5177\u4f53\u7684\u306a\u653b\u6483\u624b\u6cd5\u3092\u7406\u89e3\u3057\u3001\u305d\u306e\u5bfe\u7b56\u3068\u3057\u3066\u306e\u300cDHCP\u30b9\u30cc\u30fc\u30d4\u30f3\u30b0\u300d\u3084\u300c\u30c0\u30a4\u30ca\u30df\u30c3\u30afARP\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\uff08DAI\uff09\u300d\u3068\u3044\u3063\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6280\u8853\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n<h4>\u30b9\u30c6\u30c3\u30d73\uff1a\u5b9f\u8df5\u7684\u306a\u5b66\u7fd2\u3068\u60c5\u5831\u53ce\u96c6<\/h4>\n<p>\u673a\u4e0a\u306e\u5b66\u7fd2\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u305f\u308a\u3001\u6700\u65b0\u306e\u60c5\u5831\u3092\u53ce\u96c6\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3082\u5927\u5207\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u306e\u6d3b\u7528:<\/strong> Cisco Packet Tracer\u3084GNS3\u3001EVE-NG\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u3001\u5b9f\u969b\u306bPC\u3084\u30eb\u30fc\u30bf\u3092\u914d\u7f6e\u3057\u3001ARP\u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002Wireshark\u306a\u3069\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u30c4\u30fc\u30eb\u3067ARP\u30d1\u30b1\u30c3\u30c8\u3092\u5206\u6790\u3059\u308b\u306e\u3082\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\u3002<\/li>\n<li><strong>\u5b9f\u6a5f\u3067\u306e\u30b3\u30de\u30f3\u30c9\u64cd\u4f5c:<\/strong> \u3082\u3057\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001Linux\u3084Windows\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3067<code>arp -a<\/code>\u3084<code>ip neigh show<\/code>\uff08Linux\uff09\u306a\u3069\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001ARP\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u6700\u65b0\u60c5\u5831\u306e\u30ad\u30e3\u30c3\u30c1\u30a2\u30c3\u30d7:<\/strong> IT\u6280\u8853\u306f\u5e38\u306b\u9032\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u30cb\u30e5\u30fc\u30b9\u30b5\u30a4\u30c8\u3084IPA\u306e\u516c\u5f0f\u30b5\u30a4\u30c8\u3001\u6280\u8853\u30d6\u30ed\u30b0\u306a\u3069\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u95a2\u3059\u308b\u65b0\u3057\u3044\u60c5\u5831\u3084\u8105\u5a01\u3001\u5bfe\u7b56\u304c\u767a\u8868\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3001\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u7fd2\u6163\u3092\u3064\u3051\u307e\u3057\u3087\u3046\u3002\u60c5\u5831\u51e6\u7406\u6280\u8853\u8005\u8a66\u9a13\u306e\u8a66\u9a13\u8981\u7db1\u3082\u5b9a\u671f\u7684\u306b\u898b\u76f4\u3055\u308c\u308b\u306e\u3067\u3001IPA\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u306e\u3082\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\u306f\u3042\u304f\u307e\u3067\u4e00\u4f8b\u3067\u3059\u3002\u3054\u81ea\u8eab\u306e\u30da\u30fc\u30b9\u3084\u8208\u5473\u306b\u5408\u308f\u305b\u3066\u3001\u67d4\u8edf\u306b\u8abf\u6574\u3057\u3066\u304f\u3060\u3055\u3044\u306d\u3002\u7d99\u7d9a\u7684\u306a\u5b66\u7fd2\u304c\u3001\u3042\u306a\u305f\u306eIT\u30b9\u30ad\u30eb\u3092\u78ba\u5b9f\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u7406\u89e3\u5ea6\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u30af\u30a4\u30ba\u3092\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u305c\u3072\u6311\u6226\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h3>10. \u7406\u89e3\u5ea6\u30c1\u30a7\u30c3\u30af\uff06\u30c1\u30e3\u30ec\u30f3\u30b8\u30af\u30a4\u30ba<\/h3>\n<p>\u3055\u3042\u3001\u3053\u308c\u307e\u3067\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u5b66\u3093\u3060\u77e5\u8b58\u304c\u3069\u308c\u304f\u3089\u3044\u5b9a\u7740\u3057\u305f\u304b\u3001\u8155\u8a66\u3057\u3092\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01\u57fa\u672c\u7684\u306a\u554f\u984c\u304b\u3089\u3001\u5c11\u3057\u982d\u3092\u3072\u306d\u308b\u5fdc\u7528\u554f\u984c\u307e\u3067\u7528\u610f\u3057\u307e\u3057\u305f\u3002\u305c\u3072\u3001\u89e3\u8aac\u3092\u8aad\u3080\u524d\u306b\u3001\u3058\u3063\u304f\u308a\u3068\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u306d\u3002<\/p>\n<h4>\u30af\u30a4\u30ba1\uff1a\u57fa\u672c\u554f\u984c\uff08ARP\u306e\u5f79\u5272\uff09<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\n\u3042\u308bPC\u304c\u3001\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u306e\u5225\u306ePC\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u77e5\u3063\u3066\u3044\u308b\u304c\u3001\u305d\u306eMAC\u30a2\u30c9\u30ec\u30b9\u304c\u4e0d\u660e\u306a\u5834\u5408\u3001\u3053\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u77e5\u308b\u305f\u3081\u306b\u5229\u7528\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4f55\u3067\u3057\u3087\u3046\uff1f<\/p>\n<ol>\n<li>RARP<\/li>\n<li>DHCP<\/li>\n<li>ARP<\/li>\n<li>ICMP<\/li>\n<\/ol>\n<p><strong>\u3010\u89e3\u7b54\u3068\u89e3\u8aac\u3011<\/strong><\/p>\n<details>\n<summary>\u89e3\u7b54\u3092\u898b\u308b<\/summary>\n<p><strong>\u6b63\u89e3\uff1a3. ARP<\/strong><\/p>\n<p><strong>\u89e3\u8aac\uff1a<\/strong> ARP\uff08Address Resolution Protocol\uff09\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u554f\u984c\u6587\u306e\u72b6\u6cc1\u306b\u5b8c\u5168\u306b\u5408\u81f4\u3057\u307e\u3059\u3002RARP\u306fMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u9006\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3001DHCP\u306fIP\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3092\u81ea\u52d5\u5272\u308a\u5f53\u3066\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3001ICMP\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a3a\u65ad\u3084\u30a8\u30e9\u30fc\u901a\u77e5\u306b\u4f7f\u308f\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n<\/details>\n<h4>\u30af\u30a4\u30ba2\uff1a\u767a\u5c55\u554f\u984c\uff08RARP\u306e\u4ee3\u66ff\uff09<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\n\u304b\u3064\u3066MAC\u30a2\u30c9\u30ec\u30b9\u306e\u307f\u3092\u6301\u3064\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u7aef\u672b\u304c\u3001\u81ea\u8eab\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3057\u3066\u3044\u305f\u30d7\u30ed\u30c8\u30b3\u30eb\u306fRARP\u3067\u3059\u304c\u3001\u73fe\u5728\u3001\u305d\u306eRARP\u306e\u5f79\u5272\u3092\u3088\u308a\u9ad8\u6a5f\u80fd\u306b\u4ee3\u66ff\u3057\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4f55\u3067\u3057\u3087\u3046\uff1f<\/p>\n<ol>\n<li>DNS<\/li>\n<li>NTP<\/li>\n<li>SMTP<\/li>\n<li>DHCP<\/li>\n<\/ol>\n<p><strong>\u3010\u89e3\u7b54\u3068\u89e3\u8aac\u3011<\/strong><\/p>\n<details>\n<summary>\u89e3\u7b54\u3092\u898b\u308b<\/summary>\n<p><strong>\u6b63\u89e3\uff1a4. DHCP<\/strong><\/p>\n<p><strong>\u89e3\u8aac\uff1a<\/strong> RARP\u306fMAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u30b5\u30d6\u30cd\u30c3\u30c8\u30de\u30b9\u30af\u3084\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306a\u3069\u306e\u8ffd\u52a0\u60c5\u5831\u3092\u63d0\u4f9b\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u5236\u7d04\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u73fe\u5728\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u60c5\u5831\u3082\u307e\u3068\u3081\u3066\u81ea\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u308bDHCP\uff08Dynamic Host Configuration Protocol\uff09\u304c\u305d\u306e\u5f79\u5272\u3092\u4ee3\u66ff\u3057\u3066\u3044\u307e\u3059\u3002DNS\u306f\u30c9\u30e1\u30a4\u30f3\u540d\u89e3\u6c7a\u3001NTP\u306f\u6642\u523b\u540c\u671f\u3001SMTP\u306f\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u4f7f\u308f\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n<\/details>\n<h4>\u30af\u30a4\u30ba3\uff1a\u5fdc\u7528\u554f\u984c\uff08\u30d7\u30ed\u30ad\u30b7ARP\u306e\u7279\u6027\uff09<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\n\u4ee5\u4e0b\u306e\u8aac\u660e\u6587\u306f\u30d7\u30ed\u30ad\u30b7ARP\u306b\u95a2\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u8aac\u660e\u6587\u306e\u7a7a\u6b04\u306b\u6700\u3082\u9069\u5207\u306a\u8a9e\u53e5\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n<p>\u300c\u30d7\u30ed\u30ad\u30b7ARP\u306f\u3001\u3042\u308b\u30db\u30b9\u30c8\u304b\u3089\u306eARP\u8981\u6c42\u306b\u5bfe\u3057\u3001\u672c\u6765\u306e\u5b9b\u5148\u304c\u5225\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5b58\u5728\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u305d\u306eARP\u8981\u6c42\u3092\u53d7\u4fe1\u3057\u305f\uff08A\uff09\u304c\uff08B\uff09\u3067\u5fdc\u7b54\u3059\u308b\u3053\u3068\u3067\u3001\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3042\u308b\u3002\u3053\u306e\u6a5f\u80fd\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u900f\u904e\u6027\u3092\u9ad8\u3081\u308b\u4e00\u65b9\u3067\u3001\uff08C\uff09\u306e\u5897\u52a0\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8907\u96d1\u5316\u3068\u3044\u3063\u305f\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u6301\u3064\u3002\u300d<\/p>\n<p><strong>\u3010\u89e3\u7b54\u3068\u89e3\u8aac\u3011<\/strong><\/p>\n<details>\n<summary>\u89e3\u7b54\u3092\u898b\u308b<\/summary>\n<p><strong>\u6b63\u89e3\uff1a<\/strong><\/p>\n<p>A: \u30eb\u30fc\u30bf<\/p>\n<p>B: \u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9<\/p>\n<p>C: \u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/p>\n<p><strong>\u89e3\u8aac\uff1a<\/strong><\/p>\n<ul>\n<li>A\u306b\u306f\u3001\u7570\u306a\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u9593\u306e\u901a\u4fe1\u3092\u4e2d\u7d99\u3059\u308b\u300c\u30eb\u30fc\u30bf\u300d\u304c\u5165\u308a\u307e\u3059\u3002\u30eb\u30fc\u30bf\u306f\u30d7\u30ed\u30ad\u30b7ARP\u306e\u4e3b\u8981\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<li>B\u306b\u306f\u3001\u30eb\u30fc\u30bf\u304c\u4ee3\u7406\u5fdc\u7b54\u3068\u3057\u3066\u8fd4\u3059\u300c\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u300d\u304c\u5165\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8981\u6c42\u5143\u306e\u30db\u30b9\u30c8\u306f\u30eb\u30fc\u30bf\u3092\u5b9b\u5148\u30db\u30b9\u30c8\u3060\u3068\u52d8\u9055\u3044\u3057\u3066\u901a\u4fe1\u3092\u958b\u59cb\u3057\u307e\u3059\u3002<\/li>\n<li>C\u306b\u306f\u3001\u30d7\u30ed\u30ad\u30b7ARP\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306e\u4e00\u3064\u3067\u3042\u308b\u300c\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u300d\u304c\u5165\u308a\u307e\u3059\u3002\u7570\u306a\u308b\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u30db\u30b9\u30c8\u5b9b\u3067\u3042\u3063\u3066\u3082ARP\u8981\u6c42\u304c\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3055\u308c\u308b\u305f\u3081\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/details>\n<h4>\u30af\u30a4\u30ba4\uff1a\u30c1\u30e3\u30ec\u30f3\u30b8\u554f\u984c\uff08IPv6\u3068ARP\u306e\u6bd4\u8f03\uff09<\/h4>\n<p><strong>\u3010\u554f\u984c\u3011<\/strong><br \/>\nIPv4\u306b\u304a\u3051\u308bARP\u304cIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u5f79\u5272\u3092\u62c5\u3046\u306e\u306b\u5bfe\u3057\u3001IPv6\u74b0\u5883\u3067\u540c\u69d8\u306e\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\uff1f\u307e\u305f\u3001\u305d\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306fARP\u3068\u6bd4\u8f03\u3057\u3066\u3069\u306e\u3088\u3046\u306a\u70b9\u3067\u591a\u6a5f\u80fd\u3067\u3042\u308b\u3068\u8a00\u3048\u307e\u3059\u304b\uff1f<\/p>\n<p><strong>\u3010\u89e3\u7b54\u3068\u89e3\u8aac\u3011<\/strong><\/p>\n<details>\n<summary>\u89e3\u7b54\u3092\u898b\u308b<\/summary>\n<p><strong>\u6b63\u89e3\uff1a<\/strong><\/p>\n<p>IPv6\u74b0\u5883\u3067\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001<strong>\u8fd1\u96a3\u63a2\u7d22\u30d7\u30ed\u30c8\u30b3\u30eb\uff08Neighbor Discovery Protocol: NDP\uff09<\/strong>\u3067\u3059\u3002<\/p>\n<p>NDP\u304cARP\u3068\u6bd4\u8f03\u3057\u3066\u591a\u6a5f\u80fd\u3067\u3042\u308b\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30a2\u30c9\u30ec\u30b9\u89e3\u6c7a\u6a5f\u80fd\uff1a<\/strong> ARP\u3068\u540c\u69d8\u306bIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089MAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3057\u307e\u3059\uff08\u8fd1\u96a3\u8981\u8acb\u30e1\u30c3\u30bb\u30fc\u30b8\/\u8fd1\u96a3\u5e83\u544a\u30e1\u30c3\u30bb\u30fc\u30b8\uff09\u3002<\/li>\n<li><strong>\u91cd\u8907\u30a2\u30c9\u30ec\u30b9\u691c\u51fa\uff08DAD\uff09\uff1a<\/strong> \u65b0\u3057\u304fIP\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306b\u3001\u305d\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u65e2\u306b\u4f7f\u308f\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002<\/li>\n<li><strong>\u30eb\u30fc\u30bf\u63a2\u7d22\uff08RS\/RA\uff09\uff1a<\/strong> \u30db\u30b9\u30c8\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u30eb\u30fc\u30bf\u3092\u81ea\u52d5\u7684\u306b\u767a\u898b\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306a\u3069\u306e\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30db\u30b9\u30c8\u306f\u624b\u52d5\u8a2d\u5b9a\u306a\u3057\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u5f97\u3089\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u518d\u63a1\u756a\uff1a<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u304c\u5909\u66f4\u3055\u308c\u305f\u969b\u306b\u3001\u30db\u30b9\u30c8\u306b\u65b0\u3057\u3044\u60c5\u5831\u3092\u901a\u77e5\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/details>\n<p>\u5168\u554f\u6b63\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f\u3082\u3057\u9593\u9055\u3048\u3066\u3057\u307e\u3063\u305f\u554f\u984c\u304c\u3042\u3063\u3066\u3082\u5927\u4e08\u592b\u3067\u3059\uff01\u89e3\u8aac\u3092\u3057\u3063\u304b\u308a\u8aad\u307f\u8fbc\u307f\u3001\u518d\u5ea6\u6311\u6226\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u30af\u30a4\u30ba\u304c\u3001\u7686\u3055\u3093\u306e\u77e5\u8b58\u5b9a\u7740\u306b\u5f79\u7acb\u3064\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002\u3044\u3088\u3044\u3088\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u3053\u306e\u8a18\u4e8b\u306e\u307e\u3068\u3081\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n<h3>11. \u6700\u7d42\u30c1\u30a7\u30c3\u30af\u3068\u307e\u3068\u3081\uff1aARP, RARP, \u30d7\u30ed\u30ad\u30b7ARP\u304c\u6559\u3048\u3066\u304f\u308c\u308b\u3053\u3068<\/h3>\n<p>\u7686\u3055\u3093\u3001\u672c\u5f53\u306b\u304a\u75b2\u308c\u69d8\u3067\u3057\u305f\uff01\u3053\u306e\u8a18\u4e8b\u3092\u901a\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u300c\u7e01\u306e\u4e0b\u306e\u529b\u6301\u3061\u300d\u3067\u3042\u308bARP\u3001RARP\u3001\u305d\u3057\u3066\u30d7\u30ed\u30ad\u30b7ARP\u306b\u3064\u3044\u3066\u3001\u305d\u306e\u5f79\u5272\u3001\u4ed5\u7d44\u307f\u3001\u305d\u3057\u3066\u73fe\u4ee3\u306b\u304a\u3051\u308b\u4f4d\u7f6e\u3065\u3051\u307e\u3067\u6df1\u304f\u6398\u308a\u4e0b\u3052\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u3001\u79c1\u305f\u3061\u304c\u666e\u6bb5\u5f53\u305f\u308a\u524d\u306e\u3088\u3046\u306b\u4f7f\u3063\u3066\u3044\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901a\u4fe1\u3092\u652f\u3048\u308b\u4e0a\u3067\u3044\u304b\u306b\u91cd\u8981\u3067\u3042\u308b\u304b\u3001\u5b9f\u611f\u3057\u3066\u3044\u305f\u3060\u3051\u305f\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<h4>\u4eca\u65e5\u5b66\u3093\u3060\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3089\u3044\uff01<\/h4>\n<p>\u6700\u5f8c\u306b\u3001\u4e3b\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u3082\u3046\u4e00\u5ea6\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><strong>ARP\uff08Address Resolution Protocol\uff09:<\/strong> IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u5bfe\u5fdc\u3059\u308bMAC\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u3067\u306e\u901a\u4fe1\u306b\u4e0d\u53ef\u6b20\u3067\u3001\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u3067\u8981\u6c42\u3092\u9001\u308a\u3001\u30e6\u30cb\u30ad\u30e3\u30b9\u30c8\u3067\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/li>\n<li><strong>RARP\uff08Reverse Address Resolution Protocol\uff09:<\/strong> MAC\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u30c7\u30a3\u30b9\u30af\u30ec\u30b9\u30ef\u30fc\u30af\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u8d77\u52d5\u6642\u306a\u3069\u306b\u5229\u7528\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u73fe\u5728\u306f\u3088\u308a\u9ad8\u6a5f\u80fd\u306aDHCP\u306b\u305d\u306e\u5f79\u5272\u3092\u8b72\u308a\u3001\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<li><strong>\u30d7\u30ed\u30ad\u30b7ARP\uff08Proxy ARP\uff09:<\/strong> \u30eb\u30fc\u30bf\u304c\u3001\u81ea\u8eab\u306e\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5b58\u5728\u3059\u308b\u30db\u30b9\u30c8\u3078\u306eARP\u8981\u6c42\u306b\u5bfe\u3057\u3001\u4ee3\u7406\u3067\u81ea\u8eab\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u5fdc\u7b54\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306e\u7c21\u7d20\u5316\u306b\u5f79\u7acb\u3064\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u591a\u3044\u305f\u3081\u3001\u73fe\u4ee3\u3067\u306f\u975e\u63a8\u5968\u3068\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u305d\u308c\u305e\u308c\u304c\u7279\u5b9a\u306e\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u751f\u307e\u308c\u3001\u305d\u3057\u3066\u6280\u8853\u306e\u9032\u5316\u3068\u3068\u3082\u306b\u305d\u306e\u5f79\u5272\u3092\u5909\u3048\u305f\u308a\u3001\u4ee3\u66ff\u3055\u308c\u305f\u308a\u3057\u3066\u304d\u307e\u3057\u305f\u3002RARP\u304cDHCP\u306b\u3001ARP\u306e\u6982\u5ff5\u304cIPv6\u306eNDP\u3078\u3068\u767a\u5c55\u3057\u3066\u3044\u3063\u305f\u3088\u3046\u306b\u3001IT\u6280\u8853\u306f\u5e38\u306b\u300c\u3088\u308a\u826f\u304f\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u300d\u3068\u3044\u3046\u9032\u5316\u3092\u7d9a\u3051\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n<h4>\u77e5\u8b58\u3092\u300c\u70b9\u300d\u304b\u3089\u300c\u7dda\u300d\u3001\u305d\u3057\u3066\u300c\u7acb\u4f53\u300d\u3078<\/h4>\n<p>\u4eca\u56de\u306e\u5b66\u7fd2\u3067\u5f97\u305f\u77e5\u8b58\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u4e2d\u306e\u57fa\u790e\u3067\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u4ed6\u306e\u591a\u304f\u306eIT\u6280\u8853\u3068\u5bc6\u63a5\u306b\u7e4b\u304c\u3063\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001Web\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3001\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u306e\u5229\u7528\u3001IoT\u30c7\u30d0\u30a4\u30b9\u306e\u901a\u4fe1\u3001\u305d\u3057\u3066\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u3044\u305a\u308c\u306b\u304a\u3044\u3066\u3082\u3001IP\u30a2\u30c9\u30ec\u30b9\u3068MAC\u30a2\u30c9\u30ec\u30b9\u306e\u95a2\u9023\u6027\u3001\u305d\u3057\u3066\u305d\u306e\u89e3\u6c7a\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u77e5\u8b58\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3092\u901a\u3058\u3066\u3001\u7686\u3055\u3093\u306eIT\u5b66\u7fd2\u304c\u5358\u306a\u308b\u300c\u70b9\u306e\u77e5\u8b58\u300d\u306e\u96c6\u307e\u308a\u3067\u306f\u306a\u304f\u3001\u300c\u7dda\u300d\u3068\u3057\u3066\u7e4b\u304c\u308a\u3001\u3055\u3089\u306b\u306f\u300c\u7acb\u4f53\u7684\u306a\u7406\u89e3\u300d\u3078\u3068\u6df1\u307e\u308b\u304d\u3063\u304b\u3051\u306b\u306a\u308c\u3070\u3001\u3053\u308c\u307b\u3069\u5b09\u3057\u3044\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h4>\u5b66\u7fd2\u306f\u65c5\u3001\u3042\u306a\u305f\u306f\u63a2\u6c42\u8005\uff01<\/h4>\n<p>\u60c5\u5831\u51e6\u7406\u6280\u8853\u8005\u8a66\u9a13\u306e\u5408\u683c\u306f\u3001\u3082\u3061\u308d\u3093\u5927\u304d\u306a\u76ee\u6a19\u3067\u3042\u308a\u3001\u7d20\u6674\u3089\u3057\u3044\u9054\u6210\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u672c\u5f53\u306b\u5927\u5207\u306a\u306e\u306f\u3001\u305d\u306e\u904e\u7a0b\u3067\u57f9\u308f\u308c\u308b\u300c\u77e5\u7684\u597d\u5947\u5fc3\u300d\u3068\u300c\u81ea\u5f8b\u7684\u306a\u5b66\u7fd2\u80fd\u529b\u300d\u3060\u3068\u79c1\u306f\u8003\u3048\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306e\u3088\u3046\u306a\u57fa\u790e\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u4e00\u3064\u3092\u3068\u3063\u3066\u3082\u3001\u300c\u306a\u305c\uff1f\u300d\u3068\u554f\u3044\u304b\u3051\u3001\u305d\u306e\u80cc\u666f\u3084\u4ed5\u7d44\u307f\u3092\u6df1\u304f\u63a2\u6c42\u3059\u308b\u59ff\u52e2\u304c\u3001\u5c06\u6765\u306e\u3042\u306a\u305f\u306eIT\u30ad\u30e3\u30ea\u30a2\u3092\u8c4a\u304b\u306a\u3082\u306e\u306b\u3057\u3066\u304f\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u308c\u304b\u3089\u3082\u3001\u7686\u3055\u3093\u304cIT\u306e\u4e16\u754c\u3092\u697d\u3057\u304f\u3001\u305d\u3057\u3066\u81ea\u4fe1\u3092\u6301\u3063\u3066\u63a2\u6c42\u3057\u7d9a\u3051\u3089\u308c\u308b\u3088\u3046\u3001\u79c1\u3082\u5168\u529b\u3067\u5fdc\u63f4\u3057\u7d9a\u3051\u307e\u3059\u3002\u3082\u3057\u307e\u305f\u5b66\u7fd2\u3067\u8ff7\u3063\u305f\u308a\u3001\u65b0\u3057\u3044\u30c6\u30fc\u30de\u306b\u6311\u6226\u3057\u305f\u304f\u306a\u3063\u305f\u308a\u3057\u305f\u6642\u306f\u3001\u3044\u3064\u3067\u3082\u79c1\u3092\u983c\u3063\u3066\u304f\u3060\u3055\u3044\u306d\u3002\u5171\u306b\u6700\u9ad8\u306eIT\u5b66\u7fd2\u4f53\u9a13\u3092\u5275\u308a\u4e0a\u3052\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n<p>\u3053\u308c\u3067\u3001\u3053\u306e\u8a18\u4e8b\u306e\u5168\u3066\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u304c\u5b8c\u6210\u3057\u307e\u3057\u305f\u3002\u672c\u5f53\u306b\u304a\u75b2\u308c\u69d8\u3067\u3057\u305f\uff01<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u9ad8\u5ea6IT\u8a66\u9a13\u306e\u5b66\u7fd2\u3001\u304a\u75b2\u308c\u69d8\u3067\u3059\uff01\u4eca\u56de\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u4e2d\u306e\u57fa\u790e\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u591a\u304f\u306e\u5b66\u7fd2\u8005\u304c\u300c\u306a\u305c\u5fc5\u8981\u306a\u3093\u3060\u308d\u3046\uff1f\u300d\u3068\u7591\u554f\u306b\u601d\u3046\u3053\u3068\u306e\u591a\u3044\u300cARP\uff08Address Resolu &#8230; <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","columnck":"","stmeta_robots":"index, 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