{"id":5239,"date":"2025-07-23T16:22:25","date_gmt":"2025-07-23T07:22:25","guid":{"rendered":"https:\/\/sky-peace.net\/?p=5239"},"modified":"2025-07-23T16:22:25","modified_gmt":"2025-07-23T07:22:25","slug":"ip-mac-translation","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/ip-mac-translation\/","title":{"rendered":"\u3010\u56f3\u89e3\uff06\u65e9\u898b\u8868\u3011\u9001\u4fe1\u5143\u30fb\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\u306e\u66f8\u304d\u63db\u3048\u5b8c\u5168\u30ac\u30a4\u30c9\uff5cNAT\u30fbVRRP\u30fb\u30d7\u30ed\u30ad\u30b717\u6280\u8853\u3092\u4e00\u6319\u89e3\u8aac"},"content":{"rendered":"

\u300c\u3053\u306e\u30d1\u30b1\u30c3\u30c8\u3001\u3044\u3063\u305f\u3044\u8ab0\u304b\u3089\u8ab0\u3078\u5c4a\u304f\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u308b\u3093\u3060\u308d\u3046\uff1f<\/strong>\u300d
\n\u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u306e\u554f\u984c\u3067\u306f\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u56f3\u3092\u793a\u3057\u300c\u2460\u301c\u2462\u306b\u5165\u308b IP \u30a2\u30c9\u30ec\u30b9\u3092\u7b54\u3048\u3088\u300d\u3068\u3044\u3046\u8a2d\u554f\u304c\u5b9a\u756a\u3067\u3059\u3002\u3068\u3053\u308d\u304c NAT\uff0fNAPT \u3084 VRRP \u3092\u306f\u3058\u3081\u3068\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u6a5f\u80fd\u304c\u5165\u308a\u6df7\u3058\u308b\u3068\u3001\u9001\u4fe1\u5143\uff08src\uff09\u30fb\u9001\u4fe1\u5148\uff08dst\uff09\u3068\u3082\u306b\u4f55\u5ea6\u3082\u66f8\u304d\u63db\u308f\u308a\u3001\u982d\u304c\u3053\u3093\u304c\u3089\u304c\u308b<\/strong>\u2500\u2500\u305d\u3093\u306a\u7d4c\u9a13\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/p>\n

\u3055\u3089\u306b\u6df7\u4e71\u3092\u62db\u304f\u306e\u304c MAC \u30a2\u30c9\u30ec\u30b9<\/strong> \u306e\u5b58\u5728\u3067\u3059\u3002IP \u30ec\u30a4\u30e4\u3067\u306f\u30a2\u30c9\u30ec\u30b9\u304c\u4e0d\u5909\u3067\u3082\u3001\u540c\u3058\u533a\u9593\u3067 L2 \u306e\u9001\u4fe1\u5143\uff0f\u5b9b\u5148 MAC<\/strong> \u304c\u5909\u308f\u308b\u30b1\u30fc\u30b9\u306f\u65e5\u5e38\u8336\u98ef\u4e8b\u3002ARP \u3084 VLAN\u3001\u30c8\u30f3\u30cd\u30eb\u7d42\u7aef\u88c5\u7f6e\u306a\u3069\u304c\u95a2\u308f\u308b\u3068\u300cIP \u306f\u305d\u306e\u307e\u307e\u3001\u3067\u3082\u30a4\u30fc\u30b5\u306e\u5b9b\u5148\u304c\u5225\u300d\u3068\u3044\u3046\u4e8c\u91cd\u69cb\u9020\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u672c\u8a18\u4e8b\u3067\u306f\u3001<\/p>\n

    \n
  1. IP \u30a2\u30c9\u30ec\u30b9\u5909\u9077<\/strong> \u3092\u554f\u3046\u4ee3\u8868\u7684\u306a 17 \u6280\u8853\u3092 5 \u30ab\u30c6\u30b4\u30ea\u306b\u5206\u985e<\/li>\n
  2. MAC \u30a2\u30c9\u30ec\u30b9\u304c\u95a2\u4fc2\u3059\u308b\u4ee3\u8868\u30d1\u30bf\u30fc\u30f3<\/strong> \u3082\u4f75\u305b\u3066\u6574\u7406<\/li>\n
  3. \u3059\u3079\u3066\u3092 \u30c6\u30ad\u30b9\u30c8\u56f3\u30fb\u65e9\u898b\u8868<\/strong> \u3067\u4fef\u77b0<\/li>\n<\/ol>\n

    \u3068\u3044\u3046\u6d41\u308c\u3067\u3001\u300c\u3069\u306e\u5c64\u3067\u4f55\u304c\u66f8\u304d\u63db\u308f\u308b\u306e\u304b\u300d<\/strong> \u3092\u8996\u899a\u7684\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002\u3053\u308c\u3092\u8aad\u3081\u3070\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u554f\u984c\u3067\u7a7a\u6b04\u306b\u8ff7\u308f\u306a\u3044\u3060\u3051\u3067\u306a\u304f\u3001\u73fe\u5834\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c8\u3067\u3082\u300c\u3044\u307e\u898b\u308b\u3079\u304d\u30d8\u30c3\u30c0\u300d\u304c\u7d20\u65e9\u304f\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

    1. \u57fa\u790e\u77e5\u8b58\u3068\u308f\u304b\u308a\u3084\u3059\u3044\u89e3\u8aac<\/h2>\n\n\n\n\n\n\n\n\n\n
    #<\/th>\n\u30ab\u30c6\u30b4\u30ea<\/th>\n\u4e3b\u306a\u6280\u8853\u4f8b<\/th>\nIP \u5909\u5316<\/th>\nMAC \u5909\u5316<\/th>\n\u4e3b\u306a\u8a66\u9a13\u51fa\u984c\u70b9<\/th>\n<\/tr>\n<\/thead>\n
    \u2460<\/td>\n\u5909\u63db (Translation)<\/td>\nNAT\uff0fNAPT, CGNAT, NAT64<\/td>\n\u9001\u4fe1\u5143\u30fb\u5b9b\u5148\u3068\u3082\u66f8\u63db\u3042\u308a<\/td>\n\u533a\u9593\u3054\u3068\u306b\u518d\u89e3\u6c7a<\/td>\n\u5909\u63db\u524d\u5f8c\u306e\u5bfe\u5fdc\u8868<\/td>\n<\/tr>\n
    \u2461<\/td>\n\u5197\u9577\u5316 (Redundancy)<\/td>\nVRRP, HSRP, GLBP<\/td>\nIP\uff1d\u4eee\u60f3IP\u3067\u56fa\u5b9a<\/td>\n\u4eee\u60f3MAC\u304c\u5207\u66ff<\/strong><\/td>\n\u30de\u30b9\u30bf\u5207\u66ff\u6642\u306e src \u5224\u5b9a<\/td>\n<\/tr>\n
    \u2462<\/td>\n\u4ee3\u7406 (Proxy)<\/td>\n\u30d5\u30a9\u30ef\u30fc\u30c9\uff0f\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7, L7 LB<\/td>\n\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff0f\u30b5\u30fc\u30d0\u9593\u3067\u5b9b\u5148\u304c\u5909\u5316<\/td>\n\u518d\u8ee2\u9001\u6642\u306b\u65b0 MAC<\/td>\nHTTP CONNECT \u4f8b\u5916<\/td>\n<\/tr>\n
    \u2463<\/td>\n\u30c8\u30f3\u30cd\u30eb\uff0f\u30aa\u30fc\u30d0\u30ec\u30a4<\/td>\nGRE, IPsec, VxLAN, SSL-VPN<\/td>\n\u5916\u5074 IP \u306f\u5225<\/strong>
    \n\u5185\u5074\u306f\u4fdd\u6301<\/td>\n    		\u5916\u5074\u30d8\u30c3\u30c0\u306e MAC \u304c\u5909\u5316<\/td>\n\u4e8c\u91cd\u30d8\u30c3\u30c0\u306e\u533a\u5225<\/td>\n<\/tr>\n
    \u2464<\/td>\n\u5236\u5fa1\u30fb\u8a3a\u65ad<\/td>\nDHCP, ARP\/NDP, ICMP<\/td>\n\u8981\u6c42\uff0f\u5fdc\u7b54\u3067\u7279\u6b8a IP<\/td>\n\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8 MAC \u306a\u3069<\/td>\n0.0.0.0 \u2192 255.255.255.255<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    ASCII \u30e9\u30a4\u30af\u306a\u56f3\u89e3\uff08\u9001\u4fe1\u5143 IP\uff0f\u5b9b\u5148 IP\u30fbMAC \u306e\u5909\u9077\uff09<\/h3>\n
    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502\u2460 \u5909\u63db\uff08NAT \/ NAPT\uff09          \u2502\n\u2502 \u9001\u4fe1\u5143IP\u304c\u66f8\u304d\u63db\u308f\u308b\u4f8b        \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502[\u30af\u30e9\u30a4\u30a2\u30f3\u30c8] 192.168.0.10                     \u2502\n\u2502        \u2502 \u9001\u4fe1  (src 192.168.0.10 \u2192 203.0.113.5)\u2502\n\u2502        \u25bc                                        \u2502\n\u2502[NAT\u88c5\u7f6e]   203.0.113.5                         \u2502\n\u2502        \u2502 \u8ee2\u9001 (dst 198.51.100.20 \u306e\u307e\u307e)       \u2502\n\u2502        \u25bc                                        \u2502\n\u2502[\u30b5\u30fc\u30d0]     198.51.100.20                      \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502\u2461 \u5197\u9577\u5316\uff08VRRP\uff09               \u2502\n\u2502 \u5b9b\u5148IP\u306f\u4eee\u60f3IP\u3001MAC\u304c\u5207\u308a\u66ff\u308f\u308b \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502[\u30db\u30b9\u30c8PC]                                        \u2502\n\u2502   \u2502 \u5b9b\u5148IP 10.0.0.1 \/ \u5b9b\u5148MAC 00:00:5E:00:01:01 \u2502\n\u2502   \u25bc                                              \u2502\n\u2502[\u73fe\u30de\u30b9\u30bf\u30fc] 10.0.0.253                          \u2502\n\u2502   \u2502 \u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u5f8c                            \u2502\n\u2502   \u25bc                                              \u2502\n\u2502[\u65b0\u30de\u30b9\u30bf\u30fc] 10.0.0.254 (\u4eee\u60f3MAC\u3092\u5f15\u7d99\u304e)        \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502\u2462 \u4ee3\u7406\uff08\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\uff09      \u2502\n\u2502 \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u3067\u5b9b\u5148IP\u304c\u5909\u308f\u308b \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502[\u30d6\u30e9\u30a6\u30b6]  \u2192(\u5b9b\u5148) \u30d7\u30ed\u30ad\u30b7IP                      \u2502\n\u2502[\u30d7\u30ed\u30ad\u30b7]  \u2192(\u5b9b\u5148) \u30a2\u30d7\u30ea\u30b5\u30fc\u30d0IP                \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502\u2463 \u30c8\u30f3\u30cd\u30eb\uff08GRE \/ IPsec\uff09      \u2502\n\u2502 \u300c\u5916\u5074\u30d8\u30c3\u30c0\u300d\u3068\u300c\u5185\u5074\u30d8\u30c3\u30c0\u300d\u304c\u5225 \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502[\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8] \u2014\u2014 (\u5185\u5074: src 10.1.1.1 dst 10.2.2.2)   \u2502\n\u2502         \u2502 \u5305\u88c5                                          \u2502\n\u2502         \u25bc                                              \u2502\n\u2502[GRE GW] \u2014\u2014 (\u5916\u5074: src 203.0.113.10 dst 203.0.113.20)   \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502\u2464 \u8a3a\u65ad\uff08ICMP\/Traceroute\uff09       \u2502\n\u2502 TTL \u8d85\u904e\u5fdc\u7b54\u306e\u9001\u4fe1\u5143\u304c\u5909\u308f\u308b     \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502[Traceroute] \u2192 (TTL=1) \u2192 [Router]                      \u2502\n\u2502             \u2190 (ICMP Time Exceeded, src: Router IP)    \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n
    2. \u904e\u53bb\u306e\u51fa\u984c\u4f8b\u3068\u89e3\u8aac<\/h2>\n
    \u306d\u3089\u3044\uff1a<\/strong>\u5b9f\u969b\u306e\u8a66\u9a13\u3067\u300c\u9001\u4fe1\u5143 IP\uff0f\u5b9b\u5148 IP \u3092\u7b54\u3048\u3088\u300d\u3068\u554f\u308f\u308c\u305f\u4ee3\u8868\u554f\u984c\u3092 3 \u984c\u30d4\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3001\u7a7a\u6b04\u3092\u57cb\u3081\u308b\u601d\u8003\u30d7\u30ed\u30bb\u30b9<\/strong> \u3092\u793a\u3057\u307e\u3059\u3002\u81ea\u5206\u3067\u624b\u3092\u52d5\u304b\u3057\u3066\u56f3\u3092\u8ffd\u3046\u3053\u3068\u3067\u3001\u533a\u9593\u3054\u3068\u306e\u66f8\u304d\u63db\u3048\u30dd\u30a4\u30f3\u30c8\u304c\u5b9a\u7740\u3057\u307e\u3059\u3002<\/p>\n
    <\/p>\n
    2-1\u3000\u4ee4\u548c6\u5e74\u79cb \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8 \u5348\u524d \u554f14
    \n\u30c6\u30fc\u30de\uff1aNAPT\uff0bTraceroute<\/span><\/h3>\n
    \u250c\u2500\u2500 \u5185\u90e8 PC \u2500\u2500\u2510\n\u2502src 192.168.1.10\u2502\n\u2502dst 198.51.100.20\u2502\n\u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\n     \u25bc (TTL=1)\n\u250c\u2500 NAPT \u30eb\u30fc\u30bf \u2500\u2510\n\u2502\u5909\u63db\u5f8c src \u2192 203.0.113.5\u2502\n\u2502ICMP Time Exceeded: src 203.0.113.5\u2502\n\u2514\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2518\n     \u25bc\n\u250c\u2500 \u516c\u958b\u30b5\u30fc\u30d0 \u2500\u2510\n\u2502dst 198.51.100.20\u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n
    \u89e3\u304d\u65b9\u30e1\u30e2<\/strong><\/p>\n
      \n
    1. Traceroute \u306f \u201c\u5fdc\u7b54 ICMP \u306e \u9001\u4fe1\u5143<\/strong> \u304c\u533a\u9593\u306e\u6a5f\u5668 IP\u201d \u3068\u899a\u3048\u308b\u3002<\/li>\n
    2. NAPT \u5f8c\u306f src \u304c\u30b0\u30ed\u30fc\u30d0\u30eb\uff08203.0.113.5\uff09<\/strong> \u306b\u5909\u5316\u3002<\/li>\n
    3. ICMP \u306e src \u3082\u540c\u3058\u304f 203.0.113.5<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n\n\n\n
      \u7a7a\u6b04<\/th>\n\u6b63\u7b54<\/th>\n<\/tr>\n<\/thead>\n
      \u2460 TTL \u8d85\u904e ICMP \u306e\u9001\u4fe1\u5143<\/td>\n203.0.113.5<\/td>\n<\/tr>\n
      \u2461 NAPT \u5f8c\u306e\u9001\u4fe1\u5143 IP<\/td>\n203.0.113.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      <\/p>\n
      2-2\u3000\u4ee4\u548c5\u5e74\u6625 \u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005 \u5348\u524d \u554f37
      \n\u30c6\u30fc\u30de\uff1aVRRP \u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0<\/span><\/h3>\n
            \u250c\u2500 \u4e88\u5099\u30eb\u30fc\u30bf (10.0.0.254) \u2510\n      \u2502  \u4eee\u60f3 IP 10.0.0.1        \u2502\n      \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2518\n                   \u25bc\n\u250c\u2500\u2500 \u30b9\u30a4\u30c3\u30c1 \u2500\u2500\u2510  \u2190 \u5b9b\u5148 MAC 00:00:5E:00:01:01\n\u2502               \u2502\n\u2514\u2500\u2500 PC (10.0.0.10)\n<\/code><\/pre>\n\n\n\n\n\n\n
      \u7a7a\u6b04<\/th>\n\u6b63\u7b54<\/th>\n<\/tr>\n<\/thead>\n
      (1) \u30de\u30b9\u30bf\u30fc\u5207\u66ff\u524d ARP \u8981\u6c42\u306e\u5b9b\u5148 MAC<\/td>\n00:00:5E:00:01:01<\/td>\n<\/tr>\n
      (2) \u5207\u66ff\u5f8c\u30d1\u30b1\u30c3\u30c8\u306e\u5b9b\u5148 MAC<\/td>\n00:00:5E:00:01:01<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \u30dd\u30a4\u30f3\u30c8\uff1a<\/strong>VRRP \u306f IP \u306f\u56fa\u5b9a\uff0810.0.0.1\uff09\uff0fMAC \u306f\u4eee\u60f3 MAC<\/em>\u3002\u5207\u66ff\u5f8c\u3082 PC \u306f\u540c\u3058\u4eee\u60f3 MAC \u3078\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n
      <\/p>\n
      2-3\u3000\u5e73\u621031\u5e74\u6625 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8 \u5348\u5f8c\u2160 \u554f2
      \n\u30c6\u30fc\u30de\uff1a\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\uff0bL4\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5<\/span><\/h3>\n
      \u30d6\u30e9\u30a6\u30b6 \u2192 203.0.113.100 (Reverse Proxy)\n                 \u2502\n                 \u25bc\n          \u250c\u2500\u2500\u2500\u2500 L4 LB \u2500\u2500\u2500\u2500\u2510\n          \u2502VIP 10.1.0.1    \u2502\n          \u2514\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n            \u25bc      \u25bc\n        Web1     Web2\n        10.1.0.11 10.1.0.12\n<\/code><\/pre>\n\n\n\n\n\n\n\n
      \u533a\u9593<\/th>\nsrc\u00a0IP<\/th>\ndst\u00a0IP<\/th>\nsrc\u00a0MAC (\u6982\u5ff5)<\/th>\ndst\u00a0MAC<\/th>\n<\/tr>\n<\/thead>\n
      \u30d6\u30e9\u30a6\u30b6 \u2192 Proxy<\/td>\n192.0.2.5<\/td>\n203.0.113.100<\/strong><\/td>\nPC<\/td>\nProxy<\/td>\n<\/tr>\n
      Proxy \u2192 LB<\/td>\n203.0.113.100<\/strong><\/td>\n10.1.0.1<\/strong><\/td>\nProxy<\/td>\nLB<\/td>\n<\/tr>\n
      LB \u2192 Web1 (\u4f8b)<\/td>\n10.1.0.1<\/strong> (VIP)<\/td>\n10.1.0.11<\/td>\nLB<\/td>\nWeb1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \u8981\u70b9\uff1a<\/strong><\/p>\n
        \n
      • \u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7\uff1d\u300c\u5b9b\u5148\u3092\u80a9\u4ee3\u308f\u308a\u300d\u2192 \u30d6\u30e9\u30a6\u30b6\u304b\u3089\u898b\u3048\u308b\u5b9b\u5148\u306f Proxy \u306e IP\u3002<\/li>\n
      • L4 LB \u306f VIP \u3092\u9001\u4fe1\u5143\u306b\u3057\u3066\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3078\u8ee2\u9001\u3002<\/li>\n
      • \u300c\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u898b\u305f\u5b9b\u5148 IP \u306f\uff1f\u300d<\/em>\u306a\u3089 203.0.113.100<\/code>\u3002
        \n\u300cWeb \u30b5\u30fc\u30d0\u304c\u53d7\u3051\u53d6\u308b\u5b9b\u5148 IP \u306f\uff1f\u300d<\/em>\u306a\u3089 10.1.0.11 \/ 10.1.0.12<\/code>\u3002<\/li>\n<\/ul>\n
        <\/p>\n
        \u307e\u3068\u3081 \u2014 \u904e\u53bb\u554f\u3092\u89e3\u304f\u30b3\u30c4<\/h3>\n
          \n
        1. \u533a\u9593\u3092\u30d6\u30ed\u30c3\u30af\u56f3\u306b\u5207\u308a\u5206\u3051<\/strong>\u3001src\/dst \u3092\u66f8\u304d\u8fbc\u3080\u3002<\/li>\n
        2. IP \u3068 MAC \u3092 \u5225\u30ec\u30a4\u30e4\u3067\u8ffd\u8de1<\/strong>\u3002VRRP \u306e\u3088\u3046\u306b\u300cIP \u4e0d\u5909\uff0fMAC \u5909\u5316\u300d\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u629c\u304f\u3002<\/li>\n
        3. Traceroute\u30fbICMP \u554f\u984c\u3067\u306f \u201c\u5fdc\u7b54\u30d1\u30b1\u30c3\u30c8\u306e\u9001\u4fe1\u5143\u201d \u3092\u5fc5\u305a\u78ba\u8a8d<\/strong>\u3002<\/li>\n<\/ol>\n
          3. \u3064\u307e\u305a\u304d\u30dd\u30a4\u30f3\u30c8\u5fb9\u5e95\u89e3\u8aac<\/h2>\n
          \u306d\u3089\u3044\uff1a<\/strong>\u9001\u4fe1\u5143\uff0f\u5b9b\u5148 IP \u3068 MAC \u3092\u8ffd\u3046\u969b\u306b\u53d7\u9a13\u8005\u304c\u9665\u308a\u3084\u3059\u3044 \u300c\u7f60\u300d<\/em> \u3092\u3001\u539f\u56e0\u2192\u5bfe\u7b56\u306e\u6d41\u308c\u3067\u6574\u7406\u3057\u307e\u3059\u3002\u899a\u3048\u9055\u3044\u304c\u8d77\u304d\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u5148\u306b\u77e5\u3063\u3066\u304a\u3051\u3070\u3001\u8a66\u9a13\u672c\u756a\u3067\u306e\u30b1\u30a2\u30ec\u30b9\u30df\u30b9\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n
          <\/p>\n
          3-1\u3000\u300c\u9001\u4fe1\u5143\u3060\u3051\uff1f\u5b9b\u5148\u3060\u3051\uff1f\u300d\u2015\u2015\u4e21\u65b9\u5909\u308f\u308b\u30d1\u30bf\u30fc\u30f3\u306e\u898b\u843d\u3068\u3057<\/h3>\n
          \u250c\u2500\u2500\u2500\u2500\u2500 NAT64 GW \u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 \u5185\u5074 IPv6: 2001:db8::a  | src 2001:db8::a \u2502\n\u2502 \u5916\u5074 IPv4: 203.0.113.5  | src 203.0.113.5 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2518\n               \u25bc\n        \u250c\u2500\u2500 \u516c\u958b\u30b5\u30fc\u30d0 (198.51.100.20) \u2500\u2500\u2510\n<\/code><\/pre>\n
            \n
          • \u539f\u56e0\uff1a<\/strong>NAT64 \u306f\u300cIPv6↔IPv4 \u5909\u63db\u300d\u3067 \u9001\u4fe1\u5143\u30fb\u5b9b\u5148\u3068\u3082\u306b\u30a2\u30c9\u30ec\u30b9\u65cf\u304c\u5909\u308f\u308b<\/u>\u3002IPv6\u2192IPv4 \u306e\u53cc\u65b9\u5411\u901a\u4fe1\u3067\u623b\u308a\u30d1\u30b1\u30c3\u30c8\u3092\u8aa4\u7b54\u3057\u3084\u3059\u3044\u3002<\/li>\n
          • \u5bfe\u7b56\uff1a<\/strong>\u554f\u984c\u6587\u306b Prefix 64:ff9b::\/96<\/code> \u306e\u3088\u3046\u306a\u30d2\u30f3\u30c8\u304c\u3042\u308c\u3070\u300c\u4e21\u65b9\u5411\u3068\u3082\u5909\u63db\u3042\u308a\u300d<\/strong>\u3068\u5373\u65ad\u3059\u308b\u3002<\/li>\n<\/ul>\n
            <\/p>\n
            3-2\u3000VRRP\uff1aIP \u4e0d\u5909\uff0fMAC \u5909\u5316\u3092\u9006\u306b\u899a\u3048\u308b<\/h3>\n
            [PC] \u2192 dstIP 10.0.0.1 \/ dstMAC 00:00:5E:00:01:01\n                     \u2502 (\u30de\u30b9\u30bf\u30fc\u5207\u66ff)\n                     \u25bc\n           [\u65b0\u30de\u30b9\u30bf\u30fc] IP 10.0.0.254\n<\/code><\/pre>\n
              \n
            • \u539f\u56e0\uff1a<\/strong>\u300c\u4eee\u60f3 IP \u304c\u52d5\u304f\u300d\u3068\u601d\u3044\u8fbc\u307f\u3001\u5207\u66ff\u5f8c\u306b 10.0.0.254<\/code> \u3092\u5b9b\u5148\u306b\u3059\u308b\u8aa4\u7b54\u304c\u983b\u767a\u3002<\/li>\n
            • \u5bfe\u7b56\uff1a<\/strong>VRRP = Virtual IP \u306f\u56fa\u5b9a\u3001MAC \u304c\u79fb\u52d5<\/em> \u3068\u8a9e\u5442\u3067\u6697\u8a18\u3002\u5b9b\u5148 IP \u306f\u5e38\u306b 10.0.0.1<\/code>\u3002<\/li>\n<\/ul>\n
              <\/p>\n
              3-3\u3000\u30d7\u30ed\u30ad\u30b7\u7d4c\u7531\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u7d4c\u8def\u3092\u53d6\u308a\u9055\u3048\u308b<\/h3>\n
              [\u30d6\u30e9\u30a6\u30b6]                    [Web\u30a2\u30d7\u30ea]\n  \u2502      HTTP REQUEST            \u2502\n  \u25bc                              \u2502\n[\u30ea\u30d0\u30fc\u30b9\u30d7\u30ed\u30ad\u30b7]\u2500\u2500\u2500\u2500\u2192(\u5185\u90e8\u8ee2\u9001)\n  \u25b2                              \u2502\n  \u2502      HTTP RESPONSE           \u2502\n<\/code><\/pre>\n
                \n
              • \u539f\u56e0\uff1a<\/strong>\u300c\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u30b5\u30fc\u30d0\u304b\u3089\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u76f4\u5e30\u300d\u3068\u601d\u3044\u8fbc\u307f\u3001\u30d7\u30ed\u30ad\u30b7\u3092\u7121\u8996\u3059\u308b\u56de\u7b54\u3002<\/li>\n
              • \u5bfe\u7b56\uff1a<\/strong>HTTP\u30d8\u30c3\u30c0\u306e X-Forwarded-For<\/code> \u304c\u51fa\u305f\u3089\u300c\u5fdc\u7b54\u3082\u30d7\u30ed\u30ad\u30b7\u7d4c\u7531\u300d\u3068\u5373\u5ea7\u306b\u7d50\u3073\u4ed8\u3051\u308b<\/strong>\u3002<\/li>\n<\/ul>\n
                <\/p>\n
                3-4\u3000\u30c8\u30f3\u30cd\u30eb\u7d42\u7aef\u3067\u306e MAC \u518d\u89e3\u6c7a\u3092\u5fd8\u308c\u308b<\/h3>\n
                [\u9001\u4fe1\u5143 PC] \u2500\u2500 GRE \u2500\u2500\u25ba [\u7d42\u7aefGW] \u2500\u25ba [\u5b9b\u5148\u30b5\u30fc\u30d0]\n        \u5185\u5074dstIP 10.2.2.2        ARP\u518d\u89e3\u6c7a\uff01\n<\/code><\/pre>\n
                  \n
                • \u539f\u56e0\uff1a<\/strong>\u300c\u5185\u5074 IP \u306e\u307e\u307e\u76f4\u63a5\u30b5\u30fc\u30d0\u3078\u5c4a\u304f\u300d\u3068\u8aa4\u8a8d\u3057\u3001GW\u2192\u30b5\u30fc\u30d0\u9593\u306e MAC \u30a2\u30c9\u30ec\u30b9\u3092\u66f8\u304b\u306a\u3044\u3002<\/li>\n
                • \u5bfe\u7b56\uff1a<\/strong>\u5916\u5074\u30c8\u30f3\u30cd\u30eb\u3092\u5265\u304c\u3059\uff1dL3 \u518d\u914d\u9001\u2192L2 ARP\/NDP \u89e3\u6c7a<\/span>\u306e\u30ef\u30f3\u30b9\u30c6\u30c3\u30d7\u3092\u56f3\u306b\u66f8\u304d\u8db3\u3059\u3002<\/li>\n<\/ul>\n
                  <\/p>\n
                  3-5\u3000Traceroute\uff1aICMP \u306e\u9001\u4fe1\u5143\u3092\u30eb\u30fc\u30bf\u3067\u306f\u306a\u304f\u300c\u5b9b\u5148\u300d\u3068\u7b54\u3048\u308b<\/h3>\n
                  [Traceroute] (TTL=1) \u2500\u25ba [Router]\n               \u25c4\u2500 ICMP Time Exceeded (src = Router IP)\n<\/code><\/pre>\n
                    \n
                  • \u539f\u56e0\uff1a<\/strong>\u300c\u76ee\u7684\u5730\u30b5\u30fc\u30d0\u304c\u5fdc\u7b54\u3059\u308b\u300d\u3068\u601d\u3044\u8fbc\u307f\u3001Router \u306e IP \u3067\u306f\u306a\u304f\u30b5\u30fc\u30d0 IP \u3068\u56de\u7b54\u3002<\/li>\n
                  • \u5bfe\u7b56\uff1a<\/strong>Type 11 (Time Exceeded)<\/code> \u3092\u898b\u305f\u3089\u5fc5\u305a \u201c\u30eb\u30fc\u30bf\u306e IP\u201d \u304c\u9001\u4fe1\u5143<\/strong>\u3068\u6761\u4ef6\u53cd\u5c04\u3002<\/li>\n<\/ul>\n
                    <\/p>\n
                    \u307e\u3068\u3081 \u2015 \u5931\u70b9\u56de\u907f\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n
                      \n
                    1. \u300c\u4e21\u65b9\u5909\u308f\u308b\uff0f\u7247\u65b9\u5909\u308f\u308b\u300d\u3092 \u5fc5\u305a\u533a\u5225<\/u>\u3002<\/li>\n
                    2. VRRP\uff1dIP \u56fa\u5b9a\u30fbMAC \u53ef\u5909\u3001NAPT\uff1d\u4e21\u65b9\u5411<\/em>\u5909\u63db\u3001Traceroute\uff1dICMP src=\u30eb\u30fc\u30bf\u3002<\/li>\n
                    3. \u30c8\u30f3\u30cd\u30eb\u7d42\u7aef\u5f8c\u306f\u300cARP \u89e3\u6c7a\u2192\u65b0 MAC\u300d\u306e 1 \u30b9\u30c6\u30c3\u30d7\u3092\u5fd8\u308c\u306a\u3044\u3002<\/li>\n<\/ol>\n
                      4. \u4eca\u5f8c\u306e\u51fa\u984c\u4e88\u60f3\u3068\u4f8b\u984c<\/h2>\n
                      \u306d\u3089\u3044\uff1a<\/strong>\u6700\u65b0\u30b7\u30e9\u30d0\u30b9\u3084\u696d\u754c\u30c8\u30ec\u30f3\u30c9\u3092\u8e0f\u307e\u3048\u3001\u6b21\u56de\u4ee5\u964d\u306e\u5fdc\u7528\u60c5\u5831\u30fb\u9ad8\u5ea6 IT \u8a66\u9a13\u3067\u72d9\u308f\u308c\u305d\u3046\u306a\u30c6\u30fc\u30de\u3092\u4e88\u6e2c\u3057\u307e\u3059\u3002Anycast CDN \u3084 \u30bc\u30ed\u30c8\u30e9\u30b9\u30c8 VPN \u306a\u3069 \u300cIP \u304c\u52d5\u7684\u306b\u5909\u308f\u308b\uff0f\u4e8c\u91cd\u306b\u306a\u308b\u300d<\/em> \u30b1\u30fc\u30b9\u3092\u4e2d\u5fc3\u306b\u3001\u4e88\u60f3\u4f8b\u984c\uff0b\u6a21\u7bc4\u89e3\u7b54<\/strong> \u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/p>\n
                      <\/p>\n
                      4-1\u3000\u4e88\u60f3\u30c6\u30fc\u30de\u4e00\u89a7\uff082025\u301c2027 \u5e74\u5ea6\uff09<\/h3>\n\n\n\n\n\n\n\n\n
                      \u30ab\u30c6\u30b4\u30ea<\/th>\n\u5177\u4f53\u30c8\u30d4\u30c3\u30af<\/th>\n\u72d9\u308f\u308c\u308b\u89b3\u70b9<\/th>\n<\/tr>\n<\/thead>\n
                      \u52d5\u7684\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0<\/td>\nAnycast CDN
                      \n\u30de\u30eb\u30c1\u30ea\u30fc\u30b8\u30e7\u30f3 DNS Fail-over<\/td>\n                      		\u540c\u4e00 IP \u304c\u8907\u6570 POP \u306b\u5272\u5f53
                      \nTTL \u8d85\u904e ICMP \u306e\u9001\u4fe1\u5143\u304c\u5909\u308f\u308b<\/td>\n<\/tr>\n
                      \u30c8\u30f3\u30cd\u30eb\u62e1\u5f35<\/td>\nSASE \/ Zero-Trust
                      \nSSL-VPN over QUIC<\/td>\n                      		\u5916\u5074 IP\uff08SASE POP\uff09\u3068\u5185\u5074 IP\uff08\u793e\u5185\u30bb\u30b0\u30e1\u30f3\u30c8\uff09\u306e\u4e8c\u91cd\u5316
                      \n\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u591a\u6bb5\u5909\u63db<\/td>\n<\/tr>\n
                      IPv6 \u79fb\u884c<\/td>\nNPTv6
                      \n464XLAT\uff08NAT64\uff0bCLAT\uff09<\/td>\n                      		\u9001\u4fe1\u5143\u30fb\u5b9b\u5148\u306e \u65cf<\/em> \u304c IPv4↔IPv6 \u3067\u90fd\u5ea6\u5909\u63db<\/td>\n<\/tr>\n
                      \u30b5\u30fc\u30d3\u30b9\u30e1\u30c3\u30b7\u30e5<\/td>\nEnvoy \/ Istio<\/td>\nSidecar \u304c L4\/L7 \u30d7\u30ed\u30ad\u30b7\u3068\u3057\u3066\u5b9b\u5148\u3092\u66f8\u304d\u63db\u3048<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      <\/p>\n
                      4-2\u3000\u4e88\u60f3\u4f8b\u984c \u2460 \u2015 Anycast CDN<\/h3>\n
                      \u3010\u30b7\u30ca\u30ea\u30aa\u3011\n  \u30af\u30e9\u30a4\u30a2\u30f3\u30c8PC (192.0.2.10) \u304c www.example.com \u3092\u540d\u524d\u89e3\u6c7a\u3059\u308b\u3068\n  A \u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066 203.0.113.1 \u304c\u8fd4\u308b\uff08Anycast\uff09\u3002\n  \u5b9f\u969b\u306b\u306f\u5730\u57df\u3054\u3068\u306b POP-A, POP-B \u304c\u3042\u308a\u3001\u4e21\u65b9\u304c 203.0.113.1 \u3092\u5e83\u544a\u3002\n\n  (1) \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c POP-A \u3078\u63a5\u7d9a\u3057\u305f\u969b\u306e TCP 3 Way-Handshake \u30d1\u30b1\u30c3\u30c8\u306e\n      \u9001\u4fe1\u5143 IP\u3001\u9001\u4fe1\u5148 IP \u3092\u7b54\u3048\u3088\u3002\n  (2) \u305d\u306e\u5f8c POP-A \u3067 TTL=1 \u3068\u306a\u308a ICMP Time Exceeded \u304c\u8fd4\u308b\u5834\u5408\u3001\n      ICMP \u306e\u9001\u4fe1\u5143 IP \u306f\u4f55\u304b\u3002\n<\/code><\/pre>\n
                      \u6a21\u7bc4\u89e3\u7b54\u3068\u89e3\u8aac<\/strong><\/p>\n\n\n\n\n\n\n\n
                      \u7a7a\u6b04<\/th>\n\u6b63\u7b54<\/th>\n\u7406\u7531<\/th>\n<\/tr>\n<\/thead>\n
                      (1) \u9001\u4fe1\u5143 IP<\/td>\n192.0.2.10<\/td>\nPC \u81ea\u8eab\u306e\u30b0\u30ed\u30fc\u30d0\u30eb IP<\/td>\n<\/tr>\n
                      (1) \u5b9b\u5148 IP<\/td>\n203.0.113.1<\/td>\nDNS \u304c\u8fd4\u3057\u305f Anycast \u30a2\u30c9\u30ec\u30b9\uff08POP-A\/B \u5171\u901a\uff09<\/td>\n<\/tr>\n
                      (2) ICMP \u9001\u4fe1\u5143 IP<\/td>\nPOP-A \u306e\u30eb\u30fc\u30bf IP\uff08\u4f8b\uff1a203.0.113.12\uff09<\/td>\nTTL \u8d85\u904e\u5fdc\u7b54\u306f \u533a\u9593\u306e\u30eb\u30fc\u30bf<\/em> \u304c src \u306b\u306a\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      <\/p>\n
                      4-3\u3000\u4e88\u60f3\u4f8b\u984c \u2461 \u2015 \u30bc\u30ed\u30c8\u30e9\u30b9\u30c8 VPN\uff08SASE\uff09<\/h3>\n
                      \u3010\u30b7\u30ca\u30ea\u30aa\u3011\n  \u30ea\u30e2\u30fc\u30c8\u7aef\u672b (10.10.10.5) \u306f SASE \u30dd\u30c3\u30d7 (198.51.100.50) \u3078\n  TLS VPN \u3092\u5f35\u308a\u3001\u793e\u5185\u30b5\u30fc\u30d0 (172.16.0.20) \u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3002\n\n  (1) \u7aef\u672b \u2192 SASE POP \u9593\u306e\u300c\u5916\u5074\u30d1\u30b1\u30c3\u30c8\u300d\u306e\u9001\u4fe1\u5143 IP \u3068\u5b9b\u5148 IP\u3002\n  (2) POP \u2192 \u793e\u5185\u30b5\u30fc\u30d0\u9593\u306e\u300c\u5185\u5074\u30d1\u30b1\u30c3\u30c8\u300d\u306e\u9001\u4fe1\u5143 IP \u3068\u5b9b\u5148 IP\u3002\n  (3) \u7aef\u672b\u304c\u53d7\u3051\u53d6\u308b\u623b\u308a\u30d1\u30b1\u30c3\u30c8\u306e \u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u756a\u53f7<\/u> \u306f\u3001\n      \u5b9f\u969b\u306e\u30b5\u30fc\u30d0\u30dd\u30fc\u30c8\u3068\u540c\u3058\u304b\u3001\u7570\u306a\u308b\u304b\uff1f\uff08\u540c\uff0f\u7570\uff09\n<\/code><\/pre>\n
                      \u6a21\u7bc4\u89e3\u7b54\u3068\u89e3\u8aac<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
                      \u7a7a\u6b04<\/th>\n\u6b63\u7b54<\/th>\n\u7406\u7531<\/th>\n<\/tr>\n<\/thead>\n
                      (1) \u9001\u4fe1\u5143 IP<\/td>\n10.10.10.5<\/td>\n\u7aef\u672b\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 IP<\/td>\n<\/tr>\n
                      (1) \u5b9b\u5148 IP<\/td>\n198.51.100.50<\/td>\nSASE POP \u306e\u516c\u958b IP\uff08VPN \u7d42\u7aef\uff09<\/td>\n<\/tr>\n
                      (2) \u9001\u4fe1\u5143 IP<\/td>\n10.10.10.5<\/td>\nPOP \u3067\u30c7\u30ab\u30d7\u30bb\u30eb\u5f8c\u3001\u5185\u5074\u30d8\u30c3\u30c0\u306e src \u306f\u7aef\u672b IP \u3092\u4fdd\u6301<\/td>\n<\/tr>\n
                      (2) \u5b9b\u5148 IP<\/td>\n172.16.0.20<\/td>\n\u793e\u5185\u30b5\u30fc\u30d0\u306e IP<\/td>\n<\/tr>\n
                      (3) \u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u756a\u53f7<\/td>\n\u7570<\/td>\nPOP \u3067 NAPT\uff08Source Port Rewrite\uff09<\/em> \u304c\u5165\u308b\u305f\u3081<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      <\/p>\n
                      4-4\u3000\u7b54\u3048\u5408\u308f\u305b\u65e9\u898b\u8868<\/h3>\n\n\n\n\n\n\n\n\n
                      \u4f8b\u984c<\/th>\n\u533a\u9593<\/th>\nsrc\u00a0IP<\/th>\ndst\u00a0IP<\/th>\n\u5099\u8003<\/th>\n<\/tr>\n<\/thead>\n
                      Anycast CDN<\/td>\nPC \u2192 POP-A<\/td>\n192.0.2.10<\/td>\n203.0.113.1<\/td>\n<\/td>\n<\/tr>\n
                      ICMP \u5fdc\u7b54<\/td>\n203.0.113.12<\/td>\n192.0.2.10<\/td>\nTTL Exceeded src=POP-A<\/td>\n<\/tr>\n
                      SASE VPN<\/td>\n\u5916\u5074\u30c8\u30f3\u30cd\u30eb<\/td>\n10.10.10.5<\/td>\n198.51.100.50<\/td>\nTLS\/443 \u7b49<\/td>\n<\/tr>\n
                      \u5185\u5074\u30d1\u30b1\u30c3\u30c8<\/td>\n10.10.10.5<\/td>\n172.16.0.20<\/td>\n\u793e\u5185\u30bb\u30b0\u30e1\u30f3\u30c8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                      <\/p>\n
                      \u307e\u3068\u3081 \u2014 \u65b0\u50be\u5411\u5bfe\u7b56\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n
                        \n
                      • Anycast<\/strong>\uff1a\u540c\u4e00 IP \u304c\u8907\u6570\u30ce\u30fc\u30c9\u3067\u5e83\u544a\u3055\u308c\u308b \u2192 \u300cICMP src \u306f\u6700\u5bc4\u308a POP\u300d \u3092\u30bb\u30c3\u30c8\u3067\u899a\u3048\u308b\u3002<\/li>\n
                      • SASE \/ \u30bc\u30ed\u30c8\u30e9\u30b9\u30c8 VPN<\/strong>\uff1a\u5916\u5074 IP \u2260 \u5185\u5074 IP<\/em> \u306e\u4e8c\u91cd\u69cb\u9020\uff0bNAPT \u304c\u7d61\u3080\u3002\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u66f8\u304d\u63db\u3048\u6709\u7121\u3082\u78ba\u8a8d\u3002<\/li>\n
                      • NPTv6 & 464XLAT<\/strong>\uff1aIPv4↔IPv6 \u306e\u65cf\u5909\u63db\u306f \u201c\u4e21\u65b9\u5411\u304b\u7247\u65b9\u5411\u304b\u201d \u3092\u5fc5\u305a\u554f\u984c\u6587\u3067\u78ba\u8a8d\u3002<\/li>\n<\/ul>\n
                        5. \u6d3e\u751f\u8a9e\u30fb\u95a2\u9023\u30ad\u30fc\u30ef\u30fc\u30c9\u65e9\u898b\u8868<\/h2>\n
                        \u306d\u3089\u3044\uff1a<\/strong>\u672c\u7de8\u3067\u6271\u308f\u306a\u304b\u3063\u305f\u3082\u306e\u306e\u3001\u8a66\u9a13\u3067\u300c\u7528\u8a9e\u3060\u3051\u300d\u805e\u304b\u308c\u3084\u3059\u3044\u6d3e\u751f\u6280\u8853\u3092\u30d4\u30c3\u30af\u30a2\u30c3\u30d7\u3002
                        \n\u5404\u30ad\u30fc\u30ef\u30fc\u30c9\u306b\u3064\u3044\u3066 \u300c\u9001\u4fe1\u5143\uff0f\u5b9b\u5148 IP\u30fbMAC \u304c\u3069\u3053\u3067\u3069\u3046\u5909\u308f\u308b\u304b\u300d<\/em> \u3092 1 \u884c\u3067\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                        #<\/th>\n\u30ad\u30fc\u30ef\u30fc\u30c9<\/th>\n\u533a\u5206<\/th>\nIP\uff0fMAC \u5909\u5316\u30dd\u30a4\u30f3\u30c8\uff081 \u884c\u307e\u3068\u3081\uff09<\/th>\n<\/tr>\n<\/thead>\n
                        1<\/td>\nCGNAT<\/td>\n\u5909\u63db<\/td>\n\u5b85\u5185\u2192ISP \u5883\u754c\u3067 src IP \u3092\u5171\u6709\u30b0\u30ed\u30fc\u30d0\u30eb<\/strong> \u306b\u66f8\u63db\uff08\u30dd\u30fc\u30c8\u591a\u91cd\uff09\u3002<\/td>\n<\/tr>\n
                        2<\/td>\nNPTv6<\/td>\n\u5909\u63db<\/td>\nIPv6 \u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u306e\u307f\u5909\u63db\u3001\u30db\u30b9\u30c8\u90e8\u4e0d\u5909<\/strong>\u3002\u53cc\u65b9\u5411\u3067 src\/dst \u304c\u66f8\u63db\u308f\u308b\u3002<\/td>\n<\/tr>\n
                        3<\/td>\nGENEVE<\/td>\n\u30c8\u30f3\u30cd\u30eb<\/td>\n\u5916\u5074 UDP\/IP \u30d8\u30c3\u30c0\u8ffd\u52a0\u3002\u5185\u5074 IP \u306f\u4fdd\u6301\uff0f\u5916\u5074 IP \u306f GW \u540c\u58eb<\/strong>\u3002<\/td>\n<\/tr>\n
                        4<\/td>\nDNS \u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3<\/td>\n\u5197\u9577\u5316<\/td>\nDNS \u5fdc\u7b54\u3067 \u5b9b\u5148 IP \u304c\u90fd\u5ea6\u5909\u308f\u308b<\/strong>\u3002\u5b9f\u30d1\u30b1\u30c3\u30c8\u306f\u66f8\u63db\u306a\u3057\u3002<\/td>\n<\/tr>\n
                        5<\/td>\nAnycast<\/td>\n\u5197\u9577\u5316<\/td>\n\u540c\u4e00\u5b9b\u5148 IP \u3092\u8907\u6570\u30eb\u30fc\u30bf\u304c\u5e83\u544a\u3002src\/dst \u306f\u5909\u308f\u3089\u305a\u3001\u7d4c\u8def\u3067 POP \u304c\u5206\u5c90<\/strong>\u3002<\/td>\n<\/tr>\n
                        6<\/td>\nLISP\uff08Locator\/ID Sep\uff09<\/td>\n\u30c8\u30f3\u30cd\u30eb<\/td>\nID\uff08\u5185\u5074 IP\uff09\u3068 Locator\uff08\u5916\u5074 IP\uff09\u304c\u5206\u96e2\u3002\u30ab\u30d7\u30bb\u30eb\u5316\u533a\u9593\u3067\u4e8c\u91cd\u30d8\u30c3\u30c0<\/strong>\u3002<\/td>\n<\/tr>\n
                        7<\/td>\nPBR\uff08\u30dd\u30ea\u30b7\u30fc\u30d9\u30fc\u30b9\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\uff09<\/td>\n\u5236\u5fa1<\/td>\nIP \u306f\u5909\u5316\u305b\u305a<\/strong>\u3001\u9001\u4fe1\u5143 IP \u3067\u7d4c\u8def\u9078\u629e\u3060\u3051\u5909\u3048\u308b\u3002<\/td>\n<\/tr>\n
                        8<\/td>\nSNAT \/ DNAT<\/td>\n\u5909\u63db<\/td>\nSNAT\uff1a\u9001\u4fe1\u5143\u306e\u307f\u66f8\u63db\uff0fDNAT\uff1a\u5b9b\u5148\u306e\u307f\u66f8\u63db\u3002NAPT \u306e\u5358\u65b9\u5411\u7248\u3002<\/td>\n<\/tr>\n
                        9<\/td>\nQinQ\uff08802.1ad\uff09<\/td>\nL2 \u62e1\u5f35<\/td>\nVLAN \u30bf\u30b0\u4e8c\u91cd\u5316\u3002IP \u306f\u4e0d\u5909\uff0fMAC \u3082\u57fa\u672c\u4e0d\u5909<\/strong>\u3001L2 \u30d8\u30c3\u30c0\u304c\u8ffd\u52a0\u3002<\/td>\n<\/tr>\n
                        10<\/td>\nL4SLB<\/td>\n\u4ee3\u7406<\/td>\nVIP \u3092 \u9001\u4fe1\u5143 IP \u306b\u63a1\u7528<\/strong> \u3057\u3066\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3078\u8ee2\u9001\u3001\u5b9b\u5148 IP \u304c\u5b9f\u30b5\u30fc\u30d0\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                        <\/p>\n
                        \u307e\u3068\u3081 \u2015 \u6d3e\u751f\u8a9e\u5bfe\u7b56\u30ef\u30f3\u30dd\u30a4\u30f3\u30c8<\/h3>\n
                          \n
                        • \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u898b\u305f\u77ac\u9593\u306b\u300cIP \u304c\u52d5\u304f\u306e\u304b\u3001\u52d5\u304b\u306a\u3044\u306e\u304b\u300d<\/strong>\u3092\u9023\u60f3\u3067\u304d\u308b\u304b\u304c\u5f97\u70b9\u5dee\u3002<\/li>\n
                        • \u5909\u63db\u7cfb\uff08CGNAT\/NPTv6\uff09\u306f\u300c\u3069\u3061\u3089\u5411\u304d\u304c\u66f8\u304d\u63db\u308f\u308b\u304b\u300d\u3001\u5197\u9577\u5316\u7cfb\uff08Anycast\/DNS RR\uff09\u306f\u300c\u7d4c\u8def\u3060\u3051\u52d5\u304f\u300d\u70b9\u306b\u7559\u610f\u3002<\/li>\n
                        • \u30c8\u30f3\u30cd\u30eb\u7cfb\uff08GENEVE\/LISP\uff09\u306f\u5185\u5074\u30d8\u30c3\u30c0\u4fdd\u6301\uff0b\u5916\u5074\u30d8\u30c3\u30c0\u8ffd\u52a0<\/strong>\u304c\u57fa\u672c\u578b\u3002<\/li>\n<\/ul>\n
                          6. \u307e\u3068\u3081<\/h2>\n
                          \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u554f\u984c\u3067\u300c\u9001\u4fe1\u5143 IP\uff0f\u5b9b\u5148 IP\uff08\u3042\u308b\u3044\u306f MAC\uff09\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u300d\u3092\u554f\u3046\u8a2d\u554f\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u901a\u904e\u3059\u308b\u201c\u6a5f\u80fd\u201d\u3092\u7406\u89e3<\/strong>\u3059\u308c\u3070\u6016\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u672c\u8a18\u4e8b\u306e\u8981\u70b9\u3092\u6700\u5f8c\u306b\u30ae\u30e5\u30c3\u3068\u51dd\u7e2e\u3057\u307e\u3059\u3002<\/p>\n
                          <\/p>\n
                          6-1\u3000\u6697\u8a18\u3088\u308a\u201c5 \u30ab\u30c6\u30b4\u30ea\u00d7\u5909\u5316\u30d1\u30bf\u30fc\u30f3\u201d\u306e\u628a\u63e1<\/h3>\n
                            \n
                          • \u5909\u63db\u7cfb<\/strong>\uff08NAT\/NAPT\/CGNAT\u2026\uff09\uff1dIP \u304c\u66f8\u304d\u63db\u308f\u308b<\/u>\u3002<\/li>\n
                          • \u5197\u9577\u5316\u7cfb<\/strong>\uff08VRRP\/Anycast\u2026\uff09\uff1dIP \u306f\u56fa\u5b9a\u3001MAC \u307e\u305f\u306f\u7d4c\u8def\u304c\u52d5\u304f<\/u>\u3002<\/li>\n
                          • \u4ee3\u7406\u7cfb<\/strong>\uff08\u30d7\u30ed\u30ad\u30b7\/LB\uff09\uff1d\u533a\u9593\u3054\u3068\u306b\u5b9b\u5148 IP \u304c\u5909\u308f\u308b<\/u>\u3002<\/li>\n
                          • \u30c8\u30f3\u30cd\u30eb\u7cfb<\/strong>\uff08GRE\/IPsec\/VxLAN\u2026\uff09\uff1d\u5916\u5074 IP \u304c\u8ffd\u52a0\u3001\u5185\u5074 IP \u306f\u4fdd\u6301<\/u>\u3002<\/li>\n
                          • \u5236\u5fa1\u30fb\u8a3a\u65ad\u7cfb<\/strong>\uff08DHCP\/ICMP\uff09\uff1d\u7279\u6b8a IP\uff0f\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8 MAC<\/u> \u304c\u51fa\u73fe\u3002<\/li>\n<\/ul>\n
                            <\/p>\n
                            6-2\u3000\u8a66\u9a13\u76f4\u524d\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n
                              \n
                            1. \u554f\u984c\u6587\u306e\u56f3\u3092\u533a\u9593\u306b\u5206\u3051<\/strong>\u3001\u5404\u30d8\u30c3\u30c0\u3092\u66f8\u304d\u8fbc\u307f\u306a\u304c\u3089\u89e3\u304f\u3002<\/li>\n
                            2. IP \u3068 MAC \u3092\u5225\u30ec\u30a4\u30e4\u3067\u8ffd\u3046<\/strong>\uff08\u7279\u306b VRRP\u30fb\u30c8\u30f3\u30cd\u30eb\u7d42\u7aef\uff09\u3002<\/li>\n
                            3. Traceroute\uff0fICMP \u554f\u984c\u306f\u300c\u5fdc\u7b54\u306e\u9001\u4fe1\u5143\uff1d\u30eb\u30fc\u30bf\u300d<\/strong>\u3092\u5fd8\u308c\u306a\u3044\u3002<\/li>\n
                            4. DNS \u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3\uff0fAnycast \u306f\u5b9b\u5148 IP \u304c\u52d5\u304f or \u7d4c\u8def\u304c\u5909\u308f\u308b<\/strong>\u3060\u3051\u3067\u3001\u30d8\u30c3\u30c0\u66f8\u63db\u306f\u7121\u3057\u3002<\/li>\n
                            5. \u5909\u63db\u7cfb\u306f\u300c\u3069\u3061\u3089\u5411\u304d\u3067\u66f8\u63db\u308f\u308b\u304b\u300d<\/strong>\u3092\u5909\u63db\u30c6\u30fc\u30d6\u30eb\u3067\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<\/ol>\n
                              <\/p>\n
                              6-3\u3000\u6b21\u306b\u5b66\u3076\u3079\u304d\u95a2\u9023\u5206\u91ce<\/h3>\n
                                \n
                              • IPv6 \u56fa\u6709\u6a5f\u80fd<\/strong>\uff08SLAAC\u3001Segment Routing\u3001SRv6 Policy\uff09<\/li>\n
                              • \u30a2\u30d7\u30ea\u5c64\u30d7\u30ed\u30ad\u30b7<\/strong>\uff08gRPC Gateway\u3001API Gateway\uff09<\/li>\n
                              • \u30bc\u30ed\u30c8\u30e9\u30b9\u30c8\u30fbSASE<\/strong>\uff08\u653f\u7b56\u30fb\u5b9f\u88c5\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff09<\/li>\n<\/ul>\n
                                <\/p>\n
                                6-4\u3000\u7dcf\u62ec<\/h3>\n
                                \u9001\u4fe1\u5143\uff0f\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u554f\u984c\u306f\u3001\u300c\u3069\u306e\u5c64\u3067\u4f55\u304c\u8d77\u304d\u308b\u304b\u300d\u3092\u982d\u306e\u4e2d\u3067\u30ec\u30a4\u30e4\u5206\u96e2<\/strong>\u3067\u304d\u308c\u3070\u3001\u4e00\u554f\u3042\u305f\u308a 30 \u79d2<\/em>\u3067\u6b63\u7b54\u304c\u53ef\u80fd\u3067\u3059\u3002
                                \n\u6700\u5f8c\u306b\u3082\u3046\u4e00\u5ea6\u3001\u6a5f\u80fd\u3092 5 \u30ab\u30c6\u30b4\u30ea\u306b\u30de\u30c3\u30d4\u30f3\u30b0<\/u>\u3057\u3001\u81ea\u4f5c\u306e\u5909\u63db\u65e9\u898b\u8868\u3092\u30ce\u30fc\u30c8\u306b\u8cbc\u3063\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
                                \u2015\u2015 Good luck & Happy Packet Tracing! \u2015\u2015<\/p>\n","protected":false},"excerpt":{"rendered":"
                                \u300c\u3053\u306e\u30d1\u30b1\u30c3\u30c8\u3001\u3044\u3063\u305f\u3044\u8ab0\u304b\u3089\u8ab0\u3078\u5c4a\u304f\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u308b\u3093\u3060\u308d\u3046\uff1f\u300d \u5fdc\u7528\u60c5\u5831\u6280\u8853\u8005\u8a66\u9a13\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u306e\u554f\u984c\u3067\u306f\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u56f3\u3092\u793a\u3057\u300c\u2460\u301c\u2462\u306b\u5165\u308b IP \u30a2\u30c9\u30ec\u30b9\u3092\u7b54\u3048\u3088\u300d\u3068\u3044\u3046\u8a2d\u554f\u304c\u5b9a\u756a … <\/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, follow","st_titlewords":"","st_title_extra":"","st_keywords":"","st_description":"","st_display_ad_mark":"","st_display_ad_mark_hide":"","textcopyck":"","st_copyright":"","st_copyurl":"","eyecatch_set":"","st_youtube_url":"","st_youtube_eyecatch":"","headerwidget_set":"","updatewidget_set":"","kanrenwidget_set":"","ikkatuwidget_set":"","koukoku_set":"","auto_adsense_koukoku_set":"","st_redirect":"","st_redirect_url_as_canonical":"","st_redirect_pvm_do_not_track":"","post_data_updatewidget_set":"","st_post_header_under_bg":"","st_twitter_tag":"","affinger_note":"","rankdisplayck":"","st_head_code":"","st_footer_code":"","st_post_header_under_code":"","_st_toc_override":false,"_st_toc_settings":[]},"categories":[3],"tags":[5],"class_list":["post-5239","post","type-post","status-publish","format-standard","hentry","category-ipa","tag-5"],"_links":{"self":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/5239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/comments?post=5239"}],"version-history":[{"count":0,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/5239\/revisions"}],"wp:attachment":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/media?parent=5239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/categories?post=5239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/tags?post=5239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}