{"id":4044,"date":"2026-03-19T00:03:09","date_gmt":"2026-03-18T15:03:09","guid":{"rendered":"https:\/\/blog.id774.net\/entry\/?p=4044"},"modified":"2026-04-06T23:11:23","modified_gmt":"2026-04-06T14:11:23","slug":"public-dns-%e3%81%ae%e8%a8%ad%e5%ae%9a%e3%82%92%e6%95%b4%e7%90%86%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/blog.id774.net\/entry\/2026\/03\/19\/4044\/","title":{"rendered":"Public DNS \u306e\u8a2d\u5b9a\u3092\u6574\u7406\u3059\u308b"},"content":{"rendered":"

\u672c\u7a3f\u306f\u3001DNS<\/a> \u306e\u57fa\u672c\u304b\u3089\u3001\u516c\u958b DNS \uff08Public DNS\uff09\u3068\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3092\u7a93\u53e3\u306b\u3059\u308b\u69cb\u6210\u306e\u9055\u3044\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8003\u3048\u65b9\u3001Linux \u306b\u304a\u3051\u308b\u78ba\u8a8d\u65b9\u6cd5\u3001\u305d\u3057\u3066 NetworkManager \u3092\u4f7f\u3063\u3066\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u5207\u308a\u66ff\u3048\u308b\u5b9f\u52d9\u307e\u3067\u3092\u3001\u4e00\u3064\u306e\u6d41\u308c\u3068\u3057\u3066\u6574\u7406\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u3002\u5358\u306b 8.8.8.8 \u3084 1.1.1.1 \u306e\u3088\u3046\u306a\u6570\u5b57\u3092\u899a\u3048\u308b\u3060\u3051\u3067\u306f\u3001\u306a\u305c\u305d\u306e\u8a2d\u5b9a\u3092\u9078\u3076\u306e\u304b\u304c\u898b\u3048\u306a\u3044\u3002\u9006\u306b\u3001\u4ed5\u7d44\u307f\u3068\u8cac\u4efb\u5206\u754c\u3092\u6574\u7406\u3059\u308b\u3068\u3001\u5bb6\u5ead\u7528\u9014\u3001\u500b\u4eba\u30b5\u30fc\u30d0\u30fc\u7528\u9014\u3001\u672c\u683c\u904b\u7528\u7528\u9014\u3067\u4f55\u3092\u9078\u3076\u3079\u304d\u304b\u304c\u304b\u306a\u308a\u660e\u78ba\u306b\u306a\u308b\u3002 \u3053\u3053\u3067\u306f\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u306e\u4ee3\u8868\u4f8b\u3068\u3057\u3066 192.168.0.1 \u306e\u3088\u3046\u306a\u4e00\u822c\u7684\u306a\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30c9\u30ec\u30b9\u3092\u7528\u3044\u308b\u3002\u7279\u5b9a\u306e\u5bb6\u5ead\u3084\u6a5f\u5668\u306b\u56fa\u6709\u306e\u4e8b\u60c5\u306b\u306f\u7acb\u3061\u5165\u3089\u305a\u3001\u5e83\u304f\u518d\u5229\u7528\u3067\u304d\u308b\u8aac\u660e\u3092\u3059\u308b\u3002<\/p>\n

\n

1. DNS \u3068\u306f\u4f55\u304b<\/h2>\n

DNS \u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u300c\u540d\u524d\u300d\u3068\u300c\u4f4f\u6240\u300d\u3092\u3064\u306a\u3050\u4ed5\u7d44\u307f\u3067\u3042\u308b\u3002\u4eba\u9593\u306f example.com \u306e\u3088\u3046\u306a\u6587\u5b57\u5217\u306a\u3089\u899a\u3048\u3084\u3059\u3044\u304c\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306f\u6700\u7d42\u7684\u306b IP \u30a2\u30c9\u30ec\u30b9\u3067\u901a\u4fe1\u3059\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u901a\u4fe1\u3092\u59cb\u3081\u308b\u524d\u306b\u306f\u300c\u3053\u306e\u540d\u524d\u306f\u3069\u306e IP \u30a2\u30c9\u30ec\u30b9\u306a\u306e\u304b\u300d\u3092\u8abf\u3079\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u3053\u306e\u5909\u63db\u4f5c\u696d\u304c\u540d\u524d\u89e3\u6c7a\u3067\u3042\u308a\u3001\u305d\u306e\u4e2d\u5fc3\u306b\u3042\u308b\u306e\u304c DNS \u3067\u3042\u308b\u3002\u3053\u306e\u4ed5\u7d44\u307f\u306f\u3075\u3060\u3093\u610f\u8b58\u3055\u308c\u306b\u304f\u3044\u304c\u3001\u5b9f\u969b\u306b\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308b\u3002\u96fb\u8a71\u5e33\u304c\u58ca\u308c\u3066\u3044\u308b\u3068\u76f8\u624b\u306e\u756a\u53f7\u304c\u5f15\u3051\u306a\u3044\u306e\u3068\u540c\u3058\u3067\u3001DNS \u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u305d\u306e\u3082\u306e\u306f\u52d5\u3044\u3066\u3044\u3066\u3082\u76ee\u7684\u306e\u76f8\u624b\u306b\u5230\u9054\u3067\u304d\u306a\u3044<\/a>\u3002\u3057\u305f\u304c\u3063\u3066 DNS \u306f\u3001\u901a\u4fe1\u901f\u5ea6\u306e\u88dc\u52a9\u8a2d\u5b9a\u3067\u306f\u306a\u304f\u3001\u901a\u4fe1\u6210\u7acb\u305d\u306e\u3082\u306e\u3092\u652f\u3048\u308b\u524d\u63d0\u6761\u4ef6\u3068\u7406\u89e3\u3057\u305f\u65b9\u304c\u3088\u3044[1]<\/a> [2]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u89b3\u70b9<\/th>\n\u8981\u70b9<\/th>\n<\/tr>\n<\/thead>\n
\u5f79\u5272<\/td>\nDNS \u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u901a\u4fe1\u306b\u4f7f\u3046 IP \u30a2\u30c9\u30ec\u30b9\u3078\u5bfe\u5fdc\u4ed8\u3051\u308b\u4ed5\u7d44\u307f\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u5165\u53e3\u306b\u3042\u308b\u540d\u524d\u89e3\u6c7a\u57fa\u76e4\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u65e5\u5e38\u7684\u306a\u4f8b<\/td>\nWeb \u30d6\u30e9\u30a6\u30b6\u3067\u30b5\u30a4\u30c8\u540d\u3092\u5165\u529b\u3059\u308b\u3068\u3001\u5b9f\u969b\u306b\u306f\u6700\u521d\u306b DNS \u3078\u554f\u3044\u5408\u308f\u305b\u304c\u884c\u308f\u308c\u3001\u305d\u306e\u7d50\u679c\u3068\u3057\u3066\u63a5\u7d9a\u5148\u306e IP \u30a2\u30c9\u30ec\u30b9\u304c\u6c7a\u307e\u308b\u3002<\/td>\n<\/tr>\n
\u969c\u5bb3\u6642\u306e\u898b\u3048\u65b9<\/td>\nDNS \u304c\u58ca\u308c\u308b\u3068\u56de\u7dda\u81ea\u4f53\u306f\u751f\u304d\u3066\u3044\u3066\u3082\u540d\u524d\u3067\u901a\u4fe1\u5148\u3092\u898b\u3064\u3051\u3089\u308c\u306a\u3044\u305f\u3081\u3001\u30cd\u30c3\u30c8\u304c\u3064\u306a\u304c\u3089\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

2. 8.8.8.8 \u3084 1.1.1.1 \u3068\u306f\u4f55\u304b<\/h2>\n

8.8.8.8 \u3084 1.1.1.1 \u306e\u3088\u3046\u306a\u6570\u5024\u306f\u3001\u516c\u958b DNS \u30b5\u30fc\u30d0\u30fc\u306e\u4f4f\u6240\u305d\u306e\u3082\u306e\u3067\u3042\u308b\u3002\u3064\u307e\u308a\u3001\u7aef\u672b\u306f\u305d\u3053\u3078\u554f\u3044\u5408\u308f\u305b\u3092\u9001\u308a\u3001\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u5bfe\u5fdc\u3059\u308b IP \u30a2\u30c9\u30ec\u30b9\u3092\u6559\u3048\u3066\u307b\u3057\u3044\u300d\u3068\u4f9d\u983c\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u306e\u6570\u5b57\u306f\u5358\u306a\u308b\u304a\u307e\u3058\u306a\u3044\u3067\u306f\u306a\u304f\u3001\u300c\u540d\u524d\u89e3\u6c7a\u3092\u3069\u3053\u3078\u59d4\u306d\u308b\u304b\u300d\u3068\u3044\u3046\u904b\u7528\u5224\u65ad\u3092\u8868\u3057\u3066\u3044\u308b\u3002\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u3001\u516c\u958b DNS \u306f\u4e16\u754c\u4e2d\u306e\u5229\u7528\u8005\u304c\u76f4\u63a5\u4f7f\u3048\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u3067\u3042\u308b\u3002\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3084\u5951\u7d04\u3057\u3066\u3044\u308b\u56de\u7dda\u4e8b\u696d\u8005\u306e DNS \u3092\u4f7f\u3046\u4ee3\u308f\u308a\u306b\u3001\u7aef\u672b\u3084\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u76f4\u63a5\u3053\u308c\u3089\u3078\u554f\u3044\u5408\u308f\u305b\u308b\u69cb\u6210\u3082\u53d6\u308c\u308b\u3002\u305d\u306e\u7d50\u679c\u3001\u7ba1\u7406\u306e\u3057\u3084\u3059\u3055\u3001\u969c\u5bb3\u6642\u306e\u5207\u308a\u5206\u3051\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306e\u5e30\u5c5e\u5148\u306a\u3069\u304c\u5909\u308f\u3063\u3066\u304f\u308b[3]<\/a> [4]<\/a> [5]<\/a> [6]<\/a> [7]<\/a>\u3002<\/p>\n

\u307e\u305f\u3001\u591a\u304f\u306e\u516c\u958b DNS \u306f\u5197\u9577\u5316\u306e\u305f\u3081\u306b\u8907\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3002\u901a\u5e38\u306f\u30d7\u30e9\u30a4\u30de\u30ea\u3068\u30bb\u30ab\u30f3\u30c0\u30ea\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u8a2d\u5b9a\u3057\u3001\u7247\u65b9\u306e DNS \u30b5\u30fc\u30d0\u30fc\u304c\u5229\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u306f\u3082\u3046\u4e00\u65b9\u3078\u554f\u3044\u5408\u308f\u305b\u304c\u5207\u308a\u66ff\u308f\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u8907\u6570\u306e DNS \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u540d\u524d\u89e3\u6c7a\u306e\u505c\u6b62\u3092\u9632\u3050\u69cb\u6210\u304c\u53d6\u3089\u308c\u308b\u3002<\/p>\n\n\n\n\n\n\n\n
\u30d7\u30e9\u30a4\u30de\u30ea<\/th>\n\u30bb\u30ab\u30f3\u30c0\u30ea<\/th>\n\u4e3b\u306a\u904b\u55b6\u4e3b\u4f53<\/th>\n\u4f4d\u7f6e\u3065\u3051<\/th>\n<\/tr>\n<\/thead>\n
8.8.8.8<\/td>\n8.8.4.4<\/td>\nGoogle<\/td>\nGoogle \u304c\u904b\u7528\u3059\u308b\u516c\u958b DNS \u30b5\u30fc\u30d0\u30fc\u3067\u3042\u308a\u3001\u4e16\u754c\u898f\u6a21\u306e Anycast \u30a4\u30f3\u30d5\u30e9\u3068\u5927\u898f\u6a21\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3088\u308a\u9ad8\u901f\u304b\u3064\u5b89\u5b9a\u3057\u305f\u540d\u524d\u89e3\u6c7a\u3092\u63d0\u4f9b\u3059\u308b\u3002<\/td>\n<\/tr>\n
1.1.1.1<\/td>\n1.0.0.1<\/td>\nCloudflare<\/td>\nCloudflare \u304c\u63d0\u4f9b\u3059\u308b\u516c\u958b DNS \u30b5\u30fc\u30d0\u30fc\u3067\u3042\u308a\u3001\u4f4e\u9045\u5ef6\u3068\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u914d\u616e\uff08\u30ed\u30b0\u6700\u5c0f\u5316\u65b9\u91dd\uff09\u3067\u3088\u304f\u77e5\u3089\u308c\u308b\u3002<\/td>\n<\/tr>\n
9.9.9.9<\/td>\n149.112.112.112<\/td>\nQuad9<\/td>\nQuad9 \u304c\u63d0\u4f9b\u3059\u308b\u516c\u958b DNS \u30b5\u30fc\u30d0\u30fc\u3067\u3042\u308a\u3001\u8105\u5a01\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u3092\u5229\u7528\u3057\u305f\u60aa\u6027\u30c9\u30e1\u30a4\u30f3\u306e\u30d6\u30ed\u30c3\u30af\u6a5f\u80fd\u304c\u7279\u5fb4\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

3. DNS \u306f\u306a\u305c\u8907\u6570\u8a2d\u5b9a\u3059\u308b\u306e\u304b<\/h2>\n

DNS \u306f 1 \u53f0\u3060\u3051\u8a2d\u5b9a\u3059\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3002\u591a\u304f\u306e\u74b0\u5883\u3067\u306f\u8907\u6570\u306e DNS \u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u5b9a\u3057\u3001\u5148\u982d\u306e\u5019\u88dc\u304c\u4f7f\u3048\u306a\u304b\u3063\u305f\u3068\u304d\u306b\u6b21\u3092\u4f7f\u3046\u3002\u3053\u308c\u306f\u540d\u524d\u89e3\u6c7a\u304c\u901a\u4fe1\u5168\u4f53\u306e\u5165\u53e3\u306b\u3042\u308b\u305f\u3081\u3067\u3042\u308a\u3001\u3053\u3053\u304c 1 \u304b\u6240\u3060\u3051\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3068\u3001\u305d\u306e 1 \u53f0\u306e\u4e0d\u8abf\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5229\u7528\u5168\u4f53\u304c\u6b62\u307e\u308a\u5f97\u308b\u304b\u3089\u3067\u3042\u308b\u3002\u3053\u306e\u3068\u304d\u300c\u4e3b DNS\u300d\u3084\u300c\u526f DNS\u300d\u3068\u3044\u3046\u8a00\u3044\u65b9\u304c\u3055\u308c\u308b\u304c\u3001\u5b9f\u969b\u306e\u8a2d\u5b9a\u3067\u306f\u7279\u5225\u306a\u30e9\u30d9\u30eb\u304c\u306a\u304f\u3066\u3082\u4e26\u3073\u9806\u305d\u306e\u3082\u306e\u304c\u512a\u5148\u9806\u4f4d\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305f\u3060\u6570\u5b57\u304c\u4e26\u3093\u3067\u3044\u308b\u3060\u3051\u306b\u898b\u3048\u3066\u3082\u3001\u5185\u90e8\u7684\u306b\u306f\u512a\u5148\u9806\u4f4d\u3064\u304d\u306e\u5019\u88dc\u4e00\u89a7\u3067\u3042\u308b\u3002DNS \u306e\u8907\u6570\u8a2d\u5b9a\u306f\u3001\u8907\u96d1\u3055\u3092\u5897\u3084\u3059\u305f\u3081\u3067\u306f\u306a\u304f\u3001\u6b62\u307e\u308a\u306b\u304f\u3044\u69cb\u6210\u3092\u4f5c\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u8003\u3048\u65b9\u3067\u3042\u308b[1]<\/a> [2]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u9805\u76ee<\/th>\n\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n
\u7b2c 1 \u5019\u88dc<\/td>\n\u901a\u5e38\u306f\u5148\u982d\u306e DNS \u30b5\u30fc\u30d0\u30fc\u304c\u6700\u512a\u5148\u3067\u4f7f\u308f\u308c\u3001\u540d\u524d\u89e3\u6c7a\u306e\u591a\u304f\u306f\u3053\u3053\u3067\u5b8c\u7d50\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u7b2c 2 \u5019\u88dc\u4ee5\u964d<\/td>\n\u5148\u982d\u306e DNS \u304c\u5fdc\u7b54\u3057\u306a\u3044\u5834\u5408\u3084\u5229\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u5099\u3048\u3066\u3001\u5f8c\u7d9a\u306e DNS \u30b5\u30fc\u30d0\u30fc\u304c\u5f85\u6a5f\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u610f\u5473<\/td>\n\u8907\u6570\u8a2d\u5b9a\u306f\u901f\u5ea6\u5411\u4e0a\u306e\u305f\u3081\u3068\u3044\u3046\u3088\u308a\u3001\u540d\u524d\u89e3\u6c7a\u306e\u505c\u6b62\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u5197\u9577\u5316\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

4. \u540c\u4e00\u4e8b\u696d\u8005\u306e\u30da\u30a2\u3068\u7570\u306a\u308b\u4e8b\u696d\u8005\u306e\u7d44\u307f\u5408\u308f\u305b<\/h2>\n

\u516c\u958b DNS \u306e\u8aac\u660e\u3067\u306f\u3001\u3057\u3070\u3057\u3070 8.8.4.4 \u306e\u3088\u3046\u306a\u300c\u3082\u3046\u4e00\u3064\u306e\u4ee3\u8868\u30a2\u30c9\u30ec\u30b9\u300d\u304c\u767b\u5834\u3059\u308b\u3002\u3053\u308c\u306f\u540c\u3058\u4e8b\u696d\u8005\u304c\u8907\u6570\u306e\u5165\u53e3\u3092\u7528\u610f\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u3067\u3042\u308a\u3001\u540c\u4e00\u30b5\u30fc\u30d3\u30b9\u5185\u3067\u306e\u5197\u9577\u5316\u3068\u8003\u3048\u308b\u3068\u7406\u89e3\u3057\u3084\u3059\u3044\u3002Google \u306a\u3089 8.8.8.8 \u3068 8.8.4.4\u3001Cloudflare \u306a\u3089 1.1.1.1 \u3068 1.0.0.1 \u306e\u3088\u3046\u306a\u5f62\u3067\u3042\u308b\u3002\u4e00\u65b9\u3067\u3001Google\u3001Cloudflare\u3001Quad9 \u306e\u3088\u3046\u306b\u7570\u306a\u308b\u904b\u55b6\u4e3b\u4f53\u3092\u6df7\u305c\u308b\u69cb\u6210\u3082\u3042\u308b\u3002\u3053\u308c\u306f\u540c\u4e00\u30b5\u30fc\u30d3\u30b9\u5185\u3067\u306e\u5197\u9577\u5316\u3067\u306f\u306a\u304f\u3001\u4e8b\u696d\u8005\u81ea\u4f53\u306e\u5206\u6563\u3092\u91cd\u8996\u3059\u308b\u8003\u3048\u65b9\u3067\u3042\u308b\u3002\u3069\u3061\u3089\u306b\u3082\u5408\u7406\u6027\u306f\u3042\u308b\u304c\u3001\u524d\u8005\u306f\u69cb\u6210\u30dd\u30ea\u30b7\u30fc\u304c\u63c3\u3044\u3084\u3059\u304f\u3001\u5f8c\u8005\u306f\u5358\u4e00\u4e8b\u696d\u8005\u969c\u5bb3\u3078\u306e\u8010\u6027\u304c\u9ad8\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001DNS \u3092\u8907\u6570\u8a2d\u5b9a\u3059\u308b\u3068\u304d\u306b\u306f\u3001\u5358\u306b\u6570\u3092\u5897\u3084\u3059\u306e\u3067\u306f\u306a\u304f\u3001\u3069\u306e\u5c64\u3092\u5206\u6563\u3057\u305f\u3044\u306e\u304b\u3092\u610f\u8b58\u3057\u305f\u65b9\u304c\u3088\u3044[3]<\/a> [6]<\/a> [8]<\/a>\u3002<\/p>\n\n\n\n\n\n\n
\u65b9\u5f0f<\/th>\n\u4f8b<\/th>\n\u8003\u3048\u65b9<\/th>\n<\/tr>\n<\/thead>\n
\u540c\u4e00\u4e8b\u696d\u8005\u306e\u30da\u30a2<\/td>\n8.8.8.8 \u3068 8.8.4.4<\/td>\n\u540c\u3058\u4e8b\u696d\u8005\u306e DNS \u30b5\u30fc\u30d3\u30b9\u5185\u90e8\u3067\u5197\u9577\u5316\u3092\u53d6\u308b\u65b9\u5f0f\u3067\u3042\u308a\u3001\u69cb\u6210\u304c\u63c3\u3044\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n
\u7570\u306a\u308b\u4e8b\u696d\u8005\u306e\u7d44\u307f\u5408\u308f\u305b<\/td>\n8.8.8.8 \u3068 1.1.1.1 \u3068 9.9.9.9<\/td>\n\u904b\u55b6\u4e3b\u4f53\u305d\u306e\u3082\u306e\u3092\u5206\u6563\u3057\u3001\u7279\u5b9a\u306e\u4e8b\u696d\u8005\u306b\u4f9d\u5b58\u3057\u3059\u304e\u306a\u3044\u69cb\u6210\u3092\u76ee\u6307\u3059\u65b9\u5f0f\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5f8c\u8005\u306e\u8a2d\u5b9a\u306f\u7570\u306a\u308b\u7279\u6027\u306e Public DNS \u3092\u4e26\u5217\u306b\u914d\u7f6e\u3057\u3001\u5230\u9054\u6027\u3092\u512a\u5148\u3059\u308b\u69cb\u6210\u3067\u3042\u308a\u3001\u53b3\u5bc6\u306a\u30ec\u30a4\u30c6\u30f3\u30b7\u6700\u9069\u5316\u3084\u30dd\u30ea\u30b7\u30fc\u7d71\u4e00\u3092\u76ee\u7684\u3068\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u3044\u3002\u3053\u306e\u9806\u5e8f\u306f\u3001\u901a\u5e38\u6642\u306f\u89b3\u6e2c\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u60c5\u5831\u91cf\u306e\u591a\u3044\u5927\u898f\u6a21 Public DNS\uff08Google\uff09\u3092\u4e3b\u7cfb\u3068\u3057\u3001\u969c\u5bb3\u6642\u306b\u306f\u72ec\u7acb\u3057\u305f\u4ed6\u4e8b\u696d\u8005\uff08Cloudflare\u3001Quad9\uff09\u3078\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u53ef\u7528\u6027\u3068\u904b\u7528\u53ef\u8996\u6027\u3092\u4e21\u7acb\u3059\u308b\u69cb\u6210\u3067\u3042\u308b\u3002\u307e\u305f\u3001\u4e3b\u8981\u306a\u516c\u958b DNS \u3092\u5148\u982d\u306b\u7f6e\u304f\u3053\u3068\u3067\u3001\u969c\u5bb3\u6642\u306e\u60c5\u5831\u53ce\u96c6\u3084\u72b6\u6cc1\u628a\u63e1\u3092\u5bb9\u6613\u306b\u3059\u308b\u610f\u56f3\u3082\u542b\u3093\u3067\u3044\u308b\u3002<\/p>\n

\n

5. \u3059\u3067\u306b\u8907\u6570\u306e\u516c\u958b DNS \u304c\u3042\u308b\u306a\u3089\u540c\u4e00\u4e8b\u696d\u8005\u306e\u5225\u30a2\u30c9\u30ec\u30b9\u306f\u5fc5\u8981\u304b<\/h2>\n

\u305f\u3068\u3048\u3070 Google\u3001Cloudflare\u3001Quad9 \u306e\u3088\u3046\u306b\u3001\u3059\u3067\u306b\u7570\u306a\u308b\u4e8b\u696d\u8005\u306e\u516c\u958b DNS \u3092\u8907\u6570\u4f7f\u3063\u3066\u3044\u308b\u306a\u3089\u3001\u3055\u3089\u306b\u540c\u3058\u4e8b\u696d\u8005\u306e\u5225\u30a2\u30c9\u30ec\u30b9\u3092\u8db3\u3059\u5fc5\u8981\u6027\u306f\u9ad8\u304f\u306a\u3044\u3002\u7406\u7531\u306f\u3001\u3059\u3067\u306b\u904b\u55b6\u4e3b\u4f53\u304c\u5206\u6563\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3042\u308b\u3002\u3042\u308b\u4f1a\u793e\u306e DNS \u5168\u4f53\u306b\u969c\u5bb3\u304c\u8d77\u304d\u3066\u3082\u3001\u5225\u4f1a\u793e\u306e DNS \u3078\u9003\u3052\u3089\u308c\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3001\u3053\u306e\u65b9\u304c\u5206\u6563\u306e\u8cea\u306f\u6df1\u3044\u3002\u3082\u3061\u308d\u3093\u3001\u540c\u4e00\u4e8b\u696d\u8005\u306e\u30da\u30a2\u3092\u63c3\u3048\u308b\u3053\u3068\u81ea\u4f53\u304c\u60aa\u3044\u308f\u3051\u3067\u306f\u306a\u3044\u3002\u6319\u52d5\u3084\u30d5\u30a3\u30eb\u30bf\u65b9\u91dd\u3092\u63c3\u3048\u305f\u3044\u306a\u3089\u3001\u305d\u306e\u65b9\u304c\u898b\u901a\u3057\u306f\u3088\u3044\u3002\u305f\u3060\u3057\u3001\u500b\u4eba\u306e Linux \u30b5\u30fc\u30d0\u30fc<\/a>\u3084\u5bb6\u5ead\u5185\u306e\u6280\u8853\u691c\u8a3c\u3068\u3044\u3046\u6587\u8108\u3067\u306f\u3001\u307e\u305a\u904b\u55b6\u4e3b\u4f53\u306e\u5206\u6563\u304c\u3067\u304d\u3066\u3044\u308c\u3070\u5341\u5206\u306b\u5408\u7406\u7684\u3067\u3042\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u540c\u4e00\u4e8b\u696d\u8005\u306e\u5225\u30a2\u30c9\u30ec\u30b9\u3092\u5fc5\u305a\u8ffd\u52a0\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u8003\u3048\u308b\u5fc5\u8981\u306f\u306a\u3044[8]<\/a> [9]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u5224\u65ad\u8ef8<\/th>\n\u8003\u3048\u65b9<\/th>\n<\/tr>\n<\/thead>\n
\u4e8b\u696d\u8005\u5206\u6563\u3092\u91cd\u8996\u3059\u308b\u5834\u5408<\/td>\n\u3059\u3067\u306b\u8907\u6570\u306e\u516c\u958b DNS \u4e8b\u696d\u8005\u3092\u4f7f\u3063\u3066\u3044\u308b\u306a\u3089\u3001\u540c\u4e00\u4e8b\u696d\u8005\u306e\u5225\u30a2\u30c9\u30ec\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u512a\u5148\u5ea6\u306f\u4e0b\u304c\u308b\u3002<\/td>\n<\/tr>\n
\u540c\u4e00\u4e8b\u696d\u8005\u3067\u63c3\u3048\u305f\u3044\u5834\u5408<\/td>\n\u6319\u52d5\u3084\u30dd\u30ea\u30b7\u30fc\u306e\u7d71\u4e00\u611f\u3092\u91cd\u8996\u3059\u308b\u306a\u3089\u3001\u540c\u4e00\u4e8b\u696d\u8005\u306e\u30da\u30a2\u69cb\u6210\u306f\u7406\u89e3\u3057\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n
\u5b9f\u52d9\u4e0a\u306e\u7d50\u8ad6<\/td>\n\u500b\u4eba\u5229\u7528\u3084\u5c0f\u898f\u6a21\u30b5\u30fc\u30d0\u30fc\u5229\u7528\u3067\u306f\u3001\u307e\u305a\u4e8b\u696d\u8005\u5206\u6563\u304c\u3067\u304d\u3066\u3044\u308c\u3070\u5341\u5206\u306a\u3053\u3068\u304c\u591a\u3044\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

6. \u8907\u6570\u306e\u516c\u958b DNS \u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/h2>\n

\u8907\u6570\u306e\u516c\u958b DNS \u3092\u4f7f\u3046\u6700\u5927\u306e\u5229\u70b9\u306f\u3001\u5358\u4e00\u969c\u5bb3\u70b9\u3092\u6e1b\u3089\u305b\u308b\u3053\u3068\u3067\u3042\u308b\u3002\u540d\u524d\u89e3\u6c7a\u306f\u901a\u4fe1\u5168\u4f53\u306e\u5165\u53e3\u306b\u3042\u308b\u305f\u3081\u3001\u3053\u3053\u304c\u6b62\u307e\u308b\u3068 Web \u95b2\u89a7\u3084\u66f4\u65b0\u4f5c\u696d\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u53d6\u5f97\u306a\u3069\u591a\u304f\u306e\u64cd\u4f5c\u304c\u540c\u6642\u306b\u8a70\u307e\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u30011 \u3064\u306e DNS \u306b\u5168\u9762\u4f9d\u5b58\u3057\u306a\u3044\u3053\u3068\u306f\u904b\u7528\u4e0a\u304b\u306a\u308a\u610f\u5473\u304c\u5927\u304d\u3044\u3002\u3055\u3089\u306b\u3001\u516c\u958b DNS \u3092\u76f4\u63a5\u4f7f\u3046\u3068\u3001\u554f\u3044\u5408\u308f\u305b\u5148\u304c\u660e\u78ba\u306b\u306a\u308b\u3002\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3084 ISP \u306e DNS \u3092\u7d4c\u7531\u3059\u308b\u69cb\u6210\u3067\u306f\u3001\u305d\u306e\u9014\u4e2d\u3067\u4f55\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u5229\u7528\u8005\u304c\u628a\u63e1\u3057\u3065\u3089\u3044\u3053\u3068\u304c\u3042\u308b\u3002\u516c\u958b DNS \u76f4\u6307\u5b9a\u306f\u3001\u8a2d\u5b9a\u306e\u624b\u9593\u306f\u5c11\u3057\u5897\u3048\u308b\u304c\u3001\u7d4c\u8def\u3068\u8cac\u4efb\u5206\u754c\u304c\u898b\u3048\u3084\u3059\u304f\u306a\u308b\u3002\u6280\u8853\u8005\u3084\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u8005\u304c\u3053\u308c\u3092\u597d\u3080\u306e\u306f\u3001\u5358\u306b\u901f\u3044\u304b\u3089\u3067\u306f\u306a\u304f\u3001\u8aac\u660e\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u304b\u3089\u3067\u3042\u308b[3]<\/a> [5]<\/a> [7]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u30e1\u30ea\u30c3\u30c8<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u5197\u9577\u6027<\/td>\n\u4e00\u3064\u306e DNS \u304c\u843d\u3061\u3066\u3082\u5225\u306e DNS \u3078\u5207\u308a\u66ff\u3048\u3089\u308c\u308b\u305f\u3081\u3001\u540d\u524d\u89e3\u6c7a\u5168\u4f53\u304c\u6b62\u307e\u308a\u306b\u304f\u3044\u3002<\/td>\n<\/tr>\n
\u900f\u660e\u6027<\/td>\n\u554f\u3044\u5408\u308f\u305b\u5148\u304c\u660e\u78ba\u306b\u306a\u308a\u3001\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3084\u56de\u7dda\u4e8b\u696d\u8005\u5074\u306e\u72ec\u81ea\u51e6\u7406\u3092\u7d4c\u7531\u3057\u306b\u304f\u304f\u306a\u308b\u3002<\/td>\n<\/tr>\n
\u5207\u308a\u5206\u3051\u3084\u3059\u3055<\/td>\n\u554f\u984c\u767a\u751f\u6642\u306b\u3001\u7aef\u672b\u5074\u3001DNS \u5074\u3001\u30a2\u30d7\u30ea\u5074\u306e\u3069\u3053\u306b\u554f\u984c\u304c\u3042\u308b\u304b\u3092\u6bd4\u8f03\u7684\u6574\u7406\u3057\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

7. \u8907\u6570\u306e\u516c\u958b DNS \u3092\u4f7f\u3046\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n

\u7570\u306a\u308b\u516c\u958b DNS \u3092\u6df7\u305c\u308b\u69cb\u6210\u306b\u306f\u3001\u5206\u6563\u3068\u3044\u3046\u5f37\u307f\u304c\u3042\u308b\u4e00\u65b9\u3067\u3001\u5fdc\u7b54\u5185\u5bb9\u304c\u5e38\u306b\u5b8c\u5168\u4e00\u81f4\u3059\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3068\u3044\u3046\u6ce8\u610f\u70b9\u304c\u3042\u308b\u3002\u5927\u898f\u6a21\u30b5\u30a4\u30c8\u3084\u52d5\u753b\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u5229\u7528\u8005\u306e\u5834\u6240\u3084 DNS \u4e8b\u696d\u8005\u306e\u898b\u3048\u65b9\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u63a5\u7d9a\u5148\u3092\u8fd4\u3059\u3053\u3068\u304c\u3042\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u554f\u3044\u5408\u308f\u305b\u308b DNS \u304c\u5909\u308f\u308b\u3068\u3001\u63a5\u7d9a\u5148\u306e IP \u30a2\u30c9\u30ec\u30b9\u3084 CDN \u306e\u8a98\u5c0e\u5148\u304c\u5c11\u3057\u5909\u308f\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u307e\u305f\u3001Quad9 \u306e\u3088\u3046\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u91cd\u8996\u3059\u308b DNS \u306f\u3001\u60aa\u6027\u30c9\u30e1\u30a4\u30f3\u306e\u906e\u65ad\u3092\u884c\u3046\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u308c\u306f\u9632\u5fa1\u306e\u89b3\u70b9\u3067\u306f\u5229\u70b9\u3060\u304c\u3001\u5225\u306e DNS \u3067\u306f\u89e3\u6c7a\u3067\u304d\u308b\u306e\u306b\u3001\u7279\u5b9a\u306e DNS \u3067\u306f\u89e3\u6c7a\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u5dee\u306e\u539f\u56e0\u306b\u3082\u306a\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u8907\u6570\u306e\u516c\u958b DNS \u3092\u6df7\u305c\u308b\u3068\u304d\u306f\u3001\u5197\u9577\u5316\u3060\u3051\u3067\u306a\u304f\u3001\u5404\u4e8b\u696d\u8005\u306e\u30dd\u30ea\u30b7\u30fc\u5dee\u3082\u540c\u6642\u306b\u6301\u3061\u8fbc\u3080\u3053\u3068\u306b\u306a\u308b[8]<\/a> [9]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u30c7\u30e1\u30ea\u30c3\u30c8<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u5fdc\u7b54\u5dee<\/td>\n\u4e8b\u696d\u8005\u3054\u3068\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3084\u30dd\u30ea\u30b7\u30fc\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u8fd4\u308b\u7d50\u679c\u304c\u5b8c\u5168\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u30d6\u30ed\u30c3\u30af\u65b9\u91dd\u306e\u5dee<\/td>\n\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u91cd\u8996\u306e DNS \u306f\u5371\u967a\u306a\u30c9\u30e1\u30a4\u30f3\u3092\u906e\u65ad\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u4ed6\u306e DNS \u3068\u6319\u52d5\u304c\u5909\u308f\u308b\u5834\u5408\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u7406\u89e3\u306e\u8907\u96d1\u3055<\/td>\n\u5358\u306b\u4e00\u3064\u3078\u805e\u304f\u3060\u3051\u3088\u308a\u3082\u3001\u3069\u306e DNS \u304c\u5fdc\u7b54\u3057\u305f\u306e\u304b\u3092\u610f\u8b58\u3059\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304f\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

8. \u30eb\u30fc\u30bf\u30fc\u306e\u30a2\u30c9\u30ec\u30b9\u3092 DNS \u306b\u3059\u308b\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b<\/h2>\n

DNS \u306b 192.168.0.1 \u306e\u3088\u3046\u306a\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30c9\u30ec\u30b9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u591a\u304f\u306f\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u81ea\u8eab\u304c DNS \u306e\u7a93\u53e3\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u7aef\u672b\u306f\u76f4\u63a5\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u516c\u958b DNS \u3078\u554f\u3044\u5408\u308f\u305b\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u307e\u305a\u30eb\u30fc\u30bf\u30fc\u3078\u554f\u3044\u5408\u308f\u305b\u3001\u30eb\u30fc\u30bf\u30fc\u304c\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5916\u90e8 DNS \u3078\u8ee2\u9001\u3059\u308b\u3002\u3053\u308c\u3092 DNS \u30d5\u30a9\u30ef\u30fc\u30c0\u30fc\u3084 DNS \u30d7\u30ed\u30ad\u30b7\u3068\u547c\u3076\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u306e\u65b9\u5f0f\u306f\u3001\u5bb6\u5ead\u5168\u4f53\u306e\u7ba1\u7406\u3092\u7c21\u5358\u306b\u3059\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u975e\u5e38\u306b\u5408\u7406\u7684\u3067\u3042\u308b\u3002\u5404\u7aef\u672b\u306f\u30eb\u30fc\u30bf\u30fc\u3060\u3051\u898b\u3066\u3044\u308c\u3070\u3088\u304f\u3001\u305d\u306e\u5148\u3092\u610f\u8b58\u3057\u306a\u304f\u3066\u6e08\u3080\u3002\u3057\u304b\u3057\u540c\u6642\u306b\u3001\u540d\u524d\u89e3\u6c7a\u306e\u9014\u4e2d\u306b\u30eb\u30fc\u30bf\u30fc\u56fa\u6709\u306e\u51e6\u7406\u304c 1 \u5c64\u5897\u3048\u308b\u3053\u3068\u3082\u610f\u5473\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u4fbf\u5229\u3055\u3068\u5f15\u304d\u63db\u3048\u306b\u3001\u4e2d\u9593\u5c64\u306e\u6319\u52d5\u3092\u5229\u7528\u8005\u304c\u898b\u3048\u306b\u304f\u304f\u306a\u308b\u3068\u3044\u3046\u5074\u9762\u3082\u6301\u3064[4]<\/a> [15]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u69cb\u6210\u8981\u7d20<\/th>\n\u610f\u5473<\/th>\n<\/tr>\n<\/thead>\n
\u7aef\u672b<\/td>\nPC \u3084\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306f\u3001\u307e\u305a\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30a2\u30c9\u30ec\u30b9\u3078\u540d\u524d\u89e3\u6c7a\u3092\u4f9d\u983c\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc<\/td>\n\u30eb\u30fc\u30bf\u30fc\u306f DNS \u30d5\u30a9\u30ef\u30fc\u30c0\u30fc\u306e\u3088\u3046\u306b\u632f\u308b\u821e\u3044\u3001\u5916\u90e8\u306e DNS \u30b5\u30fc\u30d0\u30fc\u3078\u554f\u3044\u5408\u308f\u305b\u3092\u8ee2\u9001\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u5916\u90e8 DNS<\/td>\n\u6700\u7d42\u7684\u306a\u540d\u524d\u89e3\u6c7a\u306f\u56de\u7dda\u4e8b\u696d\u8005\u306e DNS \u3084\u516c\u958b DNS \u3067\u884c\u308f\u308c\u3001\u305d\u306e\u7d50\u679c\u304c\u30eb\u30fc\u30bf\u30fc\u7d4c\u7531\u3067\u7aef\u672b\u3078\u8fd4\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

9. \u30eb\u30fc\u30bf\u30fc DNS \u306e\u30e1\u30ea\u30c3\u30c8<\/h2>\n

\u30eb\u30fc\u30bf\u30fc\u3092 DNS \u306e\u7a93\u53e3\u306b\u3059\u308b\u65b9\u5f0f\u306f\u3001\u4e00\u822c\u5bb6\u5ead\u3067\u306f\u975e\u5e38\u306b\u5b9f\u7528\u7684\u3067\u3042\u308b\u3002\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30bf\u30d6\u30ec\u30c3\u30c8\u3001\u30ce\u30fc\u30c8 PC\u3001\u30c6\u30ec\u30d3\u3001\u30b2\u30fc\u30e0\u6a5f\u306a\u3069\u3001\u591a\u6570\u306e\u6a5f\u5668\u304c\u6df7\u5728\u3059\u308b\u74b0\u5883\u3067\u3001\u5404\u7aef\u672b\u3078\u516c\u958b DNS \u3092\u624b\u52d5\u8a2d\u5b9a\u3059\u308b\u306e\u306f\u624b\u9593\u304c\u5927\u304d\u3044\u3002\u30eb\u30fc\u30bf\u30fc\u306b\u4efb\u305b\u3066\u304a\u3051\u3070\u3001DHCP \u3092\u901a\u3058\u3066\u4e00\u62ec\u3067\u914d\u5e03\u3067\u304d\u3001\u7ba1\u7406\u8ca0\u8377\u3092\u5927\u304d\u304f\u6e1b\u3089\u305b\u308b\u3002\u307e\u305f\u3001\u5bb6\u5ead\u5185\u3060\u3051\u3067\u4f7f\u3046\u6a5f\u5668\u540d\u3084\u3001\u30eb\u30fc\u30bf\u30fc\u5074\u3067\u4e00\u62ec\u3057\u3066\u6271\u3044\u305f\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3068\u76f8\u6027\u304c\u3088\u3044\u3053\u3068\u3082\u3042\u308b\u3002\u4e00\u822c\u5229\u7528\u3067\u306f\u3001\u7d30\u304b\u3044\u5236\u5fa1\u3088\u308a\u3082\u300c\u96e3\u3057\u3044\u3053\u3068\u3092\u8003\u3048\u306a\u304f\u3066\u3088\u3044\u300d\u3053\u3068\u306e\u4fa1\u5024\u304c\u5927\u304d\u3044\u3002\u30eb\u30fc\u30bf\u30fc DNS \u306f\u307e\u3055\u306b\u305d\u306e\u65b9\u5411\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u65b9\u5f0f\u3067\u3042\u308a\u3001\u5bb6\u5ead\u7528\u9014\u3067\u306f\u5341\u5206\u306b\u5408\u7406\u7684\u306a\u9078\u629e\u80a2\u3067\u3042\u308b[15]<\/a> [16]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u30e1\u30ea\u30c3\u30c8<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u7ba1\u7406\u306e\u5bb9\u6613\u3055<\/td>\n\u5404\u7aef\u672b\u3078\u500b\u5225\u306b DNS \u3092\u8a2d\u5b9a\u3057\u306a\u304f\u3066\u3082\u3001DHCP \u306b\u3088\u308a\u5bb6\u5ead\u5168\u4f53\u3078\u4e00\u62ec\u914d\u5e03\u3067\u304d\u308b\u3002<\/td>\n<\/tr>\n
\u4e00\u4f53\u904b\u7528<\/td>\n\u5bb6\u5ead\u5185\u306e\u6a5f\u5668\u540d\u89e3\u6c7a\u3084\u30eb\u30fc\u30bf\u30fc\u56fa\u6709\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7ba1\u7406\u3068\u76f8\u6027\u304c\u3088\u3044\u5834\u5408\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u4e00\u822c\u5bb6\u5ead\u5411\u3051\u306e\u9069\u5408\u6027<\/td>\n\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u904b\u7528\u3057\u3084\u3059\u304f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4e00\u3064\u306e\u7bb1\u3068\u3057\u3066\u6271\u3048\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

10. \u30eb\u30fc\u30bf\u30fc DNS \u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n

\u30eb\u30fc\u30bf\u30fc DNS \u306e\u5f31\u70b9\u306f\u3001\u4ed5\u7d44\u307f\u304c\u5358\u7d14\u3067\u3042\u308b\u304c\u3086\u3048\u306b\u3001\u5185\u90e8\u3067\u4f55\u304c\u8d77\u304d\u3066\u3044\u308b\u304b\u3092\u5229\u7528\u8005\u304c\u628a\u63e1\u3057\u306b\u304f\u3044\u70b9\u306b\u3042\u308b\u3002\u7aef\u672b\u306e\u554f\u984c\u306a\u306e\u304b\u3001\u30eb\u30fc\u30bf\u30fc\u5185\u90e8\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u306e\u304b\u3001\u3055\u3089\u306b\u305d\u306e\u5148\u306e\u5916\u90e8 DNS \u306a\u306e\u304b\u3092\u5207\u308a\u5206\u3051\u308b\u5fc5\u8981\u304c\u51fa\u308b\u305f\u3081\u3001\u6280\u8853\u7684\u306a\u8abf\u67fb\u3067\u306f\u4e00\u6bb5\u968e\u4f59\u8a08\u306b\u8003\u3048\u308b\u3053\u3068\u306b\u306a\u308b\u3002\u307e\u305f\u3001\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u306f\u4fbf\u5229\u3055\u3092\u512a\u5148\u3057\u3066\u4f5c\u3089\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u9ad8\u6a5f\u80fd\u306a DNS \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u307b\u3069\u8a73\u7d30\u306a\u5236\u5fa1\u3084\u53ef\u8996\u5316\u304c\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u591a\u3044\u3002\u4e00\u822c\u5bb6\u5ead\u3067\u306f\u305d\u308c\u3067\u5341\u5206\u3060\u304c\u3001\u500b\u4eba\u30b5\u30fc\u30d0\u30fc\u3084\u691c\u8a3c\u74b0\u5883\u3067\u306f\u3001\u3053\u306e\u300c\u4e2d\u9593\u5c64\u304c\u898b\u3048\u306a\u3044\u300d\u3053\u3068\u81ea\u4f53\u304c\u30b9\u30c8\u30ec\u30b9\u306b\u306a\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30eb\u30fc\u30bf\u30fc DNS \u306f\u7c21\u5358\u3055\u3068\u5f15\u304d\u63db\u3048\u306b\u3001\u8aac\u660e\u53ef\u80fd\u6027\u3068\u5236\u5fa1\u6027\u3092\u4e0b\u3052\u308b\u65b9\u5f0f\u3067\u3082\u3042\u308b[15]<\/a> [17]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u30c7\u30e1\u30ea\u30c3\u30c8<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u4e2d\u9593\u5c64\u306e\u5897\u52a0<\/td>\n\u7aef\u672b\u3068\u5916\u90e8 DNS \u306e\u9593\u306b\u30eb\u30fc\u30bf\u30fc\u56fa\u6709\u306e\u51e6\u7406\u304c\u5165\u308b\u305f\u3081\u3001\u539f\u56e0\u5207\u308a\u5206\u3051\u304c\u96e3\u3057\u304f\u306a\u308b\u3002<\/td>\n<\/tr>\n
\u898b\u3048\u306b\u304f\u3055<\/td>\n\u5b9f\u969b\u306b\u3069\u306e\u5916\u90e8 DNS \u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u3001\u3069\u306e\u3088\u3046\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3044\u308b\u304b\u304c\u5229\u7528\u8005\u306b\u898b\u3048\u306b\u304f\u3044\u3002<\/td>\n<\/tr>\n
\u88fd\u54c1\u4f9d\u5b58<\/td>\n\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u306e\u5b9f\u88c5\u5dee\u3084\u72ec\u81ea\u6a5f\u80fd\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u900f\u660e\u6027\u306f\u9ad8\u304f\u306a\u3044\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

11. \u30eb\u30fc\u30bf\u30fc DNS \u3068\u516c\u958b DNS \u306e\u6bd4\u8f03<\/h2>\n

\u30eb\u30fc\u30bf\u30fc DNS \u3068\u516c\u958b DNS \u76f4\u6307\u5b9a\u306e\u9055\u3044\u306f\u3001\u5358\u306b\u300c\u3069\u3061\u3089\u304c\u901f\u3044\u304b\u300d\u3068\u3044\u3046\u8a71\u3067\u306f\u306a\u3044\u3002\u5b9f\u969b\u306b\u306f\u3001\u3069\u3053\u307e\u3067\u3092\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3078\u59d4\u306d\u3001\u3069\u3053\u304b\u3089\u3092\u81ea\u5206\u3067\u660e\u793a\u7684\u306b\u7ba1\u7406\u3059\u308b\u304b\u3068\u3044\u3046\u8a2d\u8a08\u601d\u60f3\u306e\u9055\u3044\u3067\u3042\u308b\u3002\u30eb\u30fc\u30bf\u30fc DNS \u306f\u4e00\u62ec\u7ba1\u7406\u306b\u5411\u3044\u3066\u304a\u308a\u3001\u516c\u958b DNS \u76f4\u6307\u5b9a\u306f\u900f\u660e\u6027\u3068\u5207\u308a\u5206\u3051\u306e\u3057\u3084\u3059\u3055\u306b\u5411\u3044\u3066\u3044\u308b\u3002\u3053\u306e\u305f\u3081\u3001\u4e00\u822c\u5bb6\u5ead\u3067\u306f\u30eb\u30fc\u30bf\u30fc DNS \u304c\u81ea\u7136\u3067\u3042\u308a\u3001\u6280\u8853\u8005\u306e\u500b\u4eba\u30b5\u30fc\u30d0\u30fc\u3084\u691c\u8a3c\u74b0\u5883\u3067\u306f\u516c\u958b DNS \u76f4\u6307\u5b9a\u304c\u597d\u307e\u308c\u3084\u3059\u3044\u3002\u3069\u3061\u3089\u304c\u7d76\u5bfe\u306b\u6b63\u3057\u3044\u304b\u3067\u306f\u306a\u304f\u3001\u7528\u9014\u3054\u3068\u306b\u91cd\u8996\u3059\u308b\u4fa1\u5024\u304c\u9055\u3046\u3068\u8003\u3048\u305f\u65b9\u304c\u7121\u7406\u304c\u306a\u3044\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u81ea\u5206\u304c\u4eca\u3069\u306e\u65b9\u5f0f\u3092\u4f7f\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u66d6\u6627\u306b\u3057\u306a\u3044\u3053\u3068\u3067\u3042\u308b[15]<\/a> [17]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u89b3\u70b9<\/th>\n\u30eb\u30fc\u30bf\u30fc DNS<\/th>\n\u516c\u958b DNS \u76f4\u6307\u5b9a<\/th>\n<\/tr>\n<\/thead>\n
\u7ba1\u7406\u306e\u3057\u3084\u3059\u3055<\/td>\n\u5bb6\u5ead\u5168\u4f53\u3078\u4e00\u62ec\u914d\u5e03\u3057\u3084\u3059\u304f\u3001\u4e00\u822c\u5bb6\u5ead\u3067\u306f\u6271\u3044\u3084\u3059\u3044\u3002<\/td>\n\u7aef\u672b\u3084\u30b5\u30fc\u30d0\u30fc\u3054\u3068\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u624b\u9593\u306f\u3084\u3084\u5897\u3048\u308b\u3002<\/td>\n<\/tr>\n
\u900f\u660e\u6027<\/td>\n\u9014\u4e2d\u306b\u30eb\u30fc\u30bf\u30fc\u56fa\u6709\u306e\u51e6\u7406\u304c\u5165\u308a\u3001\u5229\u7528\u8005\u304b\u3089\u898b\u3048\u306b\u304f\u3044\u3002<\/td>\n\u554f\u3044\u5408\u308f\u305b\u5148\u304c\u660e\u78ba\u3067\u3001\u8cac\u4efb\u5206\u754c\u3092\u6574\u7406\u3057\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n
\u8abf\u67fb\u306e\u3057\u3084\u3059\u3055<\/td>\n\u7aef\u672b\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u5916\u90e8 DNS \u306e\u4e09\u5c64\u3092\u7591\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002<\/td>\n\u6bd4\u8f03\u7684\u5358\u7d14\u306a\u7d4c\u8def\u306b\u306a\u308a\u3001\u5207\u308a\u5206\u3051\u3057\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

12. \u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306e\u89b3\u70b9\u3067\u898b\u308b DNS<\/h2>\n

DNS \u306f\u300c\u3069\u3053\u3078\u901a\u4fe1\u3057\u3088\u3046\u3068\u3057\u305f\u304b\u300d\u3092\u542b\u3080\u305f\u3081\u3001\u3069\u306e DNS \u3092\u4f7f\u3046\u304b\u306f\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u3082\u95a2\u4fc2\u3059\u308b\u3002\u30eb\u30fc\u30bf\u30fc DNS \u3092\u4f7f\u3046\u5834\u5408\u3001\u554f\u3044\u5408\u308f\u305b\u306f\u5bb6\u5ead\u5185\u30eb\u30fc\u30bf\u30fc\u3092\u7d4c\u7531\u3057\u3001\u305d\u306e\u5148\u306e\u56de\u7dda\u4e8b\u696d\u8005\u5074 DNS \u3084\u8a2d\u5b9a\u6e08\u307f\u5916\u90e8 DNS \u3078\u5c4a\u304f\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30ed\u30b0\u304c\u3069\u3053\u306b\u96c6\u307e\u308a\u3084\u3059\u3044\u304b\u306f\u3001\u30eb\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u3068\u56de\u7dda\u4e8b\u696d\u8005\u306e\u69cb\u6210\u306b\u5de6\u53f3\u3055\u308c\u308b\u3002\u4e00\u65b9\u3001\u516c\u958b DNS \u3092\u76f4\u63a5\u4f7f\u3046\u5834\u5408\u306f\u3001\u554f\u3044\u5408\u308f\u305b\u5148\u304c Google\u3001Cloudflare\u3001Quad9 \u306e\u3088\u3046\u306a\u516c\u958b DNS \u4e8b\u696d\u8005\u3078\u79fb\u308b\u3002\u3053\u3053\u3067\u91cd\u8981\u306a\u306e\u306f\u3001\u300cDNS \u3092\u5909\u3048\u308c\u3070\u5b8c\u5168\u306b\u533f\u540d\u306b\u306a\u308b\u300d\u3068\u3044\u3046\u7406\u89e3\u306f\u8aa4\u308a\u3060\u3068\u3044\u3046\u70b9\u3067\u3042\u308b\u3002\u5b9f\u969b\u306b\u306f\u3001\u8ab0\u306b\u554f\u3044\u5408\u308f\u305b\u5c65\u6b74\u3092\u898b\u305b\u3084\u3059\u3044\u69cb\u6210\u306b\u306a\u308b\u304b\u304c\u5909\u308f\u308b\u3060\u3051\u3067\u3042\u308b\u3002\u3057\u305f\u304c\u3063\u3066 DNS \u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u8ad6\u306f\u3001\u300c\u96a0\u305b\u308b\u304b\u3069\u3046\u304b\u300d\u3088\u308a\u3082\u3001\u300c\u8ab0\u3078\u59d4\u306d\u308b\u304b\u300d\u3092\u8003\u3048\u308b\u3079\u304d\u554f\u984c\u3067\u3042\u308b[5]<\/a> [7]<\/a> [8]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u89b3\u70b9<\/th>\n\u8981\u70b9<\/th>\n<\/tr>\n<\/thead>\n
DNS \u306e\u672c\u8cea<\/td>\nDNS \u306b\u306f\u300c\u3069\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5f15\u3044\u305f\u304b\u300d\u3068\u3044\u3046\u5c65\u6b74\u304c\u542b\u307e\u308c\u308b\u305f\u3081\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u7121\u95a2\u4fc2\u3067\u306f\u306a\u3044\u3002<\/td>\n<\/tr>\n
\u30eb\u30fc\u30bf\u30fc DNS \u5229\u7528\u6642<\/td>\n\u5bb6\u5ead\u5185\u6a5f\u5668\u3068\u56de\u7dda\u4e8b\u696d\u8005\u5074\u306e\u7d4c\u8def\u306b\u554f\u3044\u5408\u308f\u305b\u304c\u5bc4\u308a\u3084\u3059\u304f\u3001\u30ed\u30b0\u306e\u5e30\u5c5e\u5148\u306f\u305d\u306e\u69cb\u6210\u306b\u4f9d\u5b58\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u516c\u958b DNS \u5229\u7528\u6642<\/td>\n\u554f\u3044\u5408\u308f\u305b\u5148\u304c Google\u3001Cloudflare\u3001Quad9 \u306a\u3069\u306e\u516c\u958b DNS \u4e8b\u696d\u8005\u3078\u79fb\u308a\u3001\u30ed\u30b0\u306e\u96c6\u4e2d\u5148\u304c\u5909\u308f\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

13. \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u89b3\u70b9\u3067\u898b\u308b DNS<\/h2>\n

\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3067\u91cd\u8981\u306a\u306e\u306f\u3001DNS \u304c\u300c\u6b63\u3057\u3044\u540d\u524d\u89e3\u6c7a\u3092\u8fd4\u3059\u3053\u3068\u300d\u3067\u3042\u308b\u3002\u3082\u3057 DNS \u304c\u6539\u3056\u3093\u3055\u308c\u308c\u3070\u3001\u672c\u6765\u3068\u306f\u5225\u306e\u63a5\u7d9a\u5148\u3078\u8a98\u5c0e\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u306f\u3001\u6b63\u3057\u3044\u4f4f\u6240\u306e\u4ee3\u308f\u308a\u306b\u507d\u306e\u4f4f\u6240\u3092\u6559\u3048\u3089\u308c\u308b\u306e\u3068\u540c\u3058\u3067\u3042\u308a\u3001\u901a\u4fe1\u306e\u524d\u63d0\u304c\u5d29\u308c\u308b\u3002\u3053\u3053\u3067\u3001\u516c\u958b DNS \u306b\u306f\u5927\u304d\u304f\u4e8c\u3064\u306e\u65b9\u5411\u6027\u304c\u3042\u308b\u3002\u4e00\u3064\u306f\u3001\u3067\u304d\u308b\u3060\u3051\u4e2d\u7acb\u7684\u306b\u5fdc\u7b54\u3057\u3001\u52dd\u624b\u306a\u4ecb\u5165\u3092\u6e1b\u3089\u3059\u65b9\u5411\u3067\u3042\u308b\u3002\u3082\u3046\u4e00\u3064\u306f\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u95a2\u9023\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3001\u9632\u5fa1\u3092\u91cd\u8996\u3059\u308b\u65b9\u5411\u3067\u3042\u308b\u3002\u524d\u8005\u306f\u518d\u73fe\u6027\u3068\u4e88\u6e2c\u53ef\u80fd\u6027\u306b\u5f37\u304f\u3001\u5f8c\u8005\u306f\u4e8b\u6545\u9632\u6b62\u306b\u5f37\u3044\u3002\u3057\u305f\u304c\u3063\u3066 DNS \u306e\u9078\u5b9a\u306f\u3001\u901f\u5ea6\u6bd4\u8f03\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u300c\u4e2d\u7acb\u6027\u3092\u512a\u5148\u3059\u308b\u304b\u3001\u9632\u5fa1\u6027\u3092\u512a\u5148\u3059\u308b\u304b\u300d\u3068\u3044\u3046\u30dd\u30ea\u30b7\u30fc\u306e\u9078\u629e\u3067\u3082\u3042\u308b[7]<\/a> [8]<\/a> [13]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u89b3\u70b9<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u6539\u3056\u3093\u8010\u6027<\/td>\nDNS \u304c\u8aa4\u3063\u305f\u5fdc\u7b54\u3092\u8fd4\u3059\u3068\u507d\u30b5\u30a4\u30c8\u3078\u8a98\u5c0e\u3055\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u3001\u6b63\u3057\u3044\u5fdc\u7b54\u3092\u8fd4\u3059\u4ed5\u7d44\u307f\u304c\u91cd\u8981\u306b\u306a\u308b\u3002<\/td>\n<\/tr>\n
\u4e2d\u7acb\u6027<\/td>\n\u3067\u304d\u308b\u3060\u3051\u624b\u3092\u52a0\u3048\u305a\u306b\u6a19\u6e96\u7684\u306a\u5fdc\u7b54\u3092\u8fd4\u3059 DNS \u306f\u3001\u4e88\u6e2c\u53ef\u80fd\u6027\u3068\u518d\u73fe\u6027\u306b\u512a\u308c\u308b\u3002<\/td>\n<\/tr>\n
\u9632\u5fa1\u6027<\/td>\n\u5371\u967a\u30c9\u30e1\u30a4\u30f3\u3092\u4e8b\u524d\u306b\u906e\u65ad\u3059\u308b DNS \u306f\u5b89\u5168\u6027\u5411\u4e0a\u306b\u5bc4\u4e0e\u3059\u308b\u304c\u3001\u4e2d\u7acb\u6027\u3068\u306e\u9593\u3067\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u304c\u751f\u3058\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

14. \u5e73\u6587 DNS \u3068\u6697\u53f7\u5316 DNS<\/h2>\n

\u5f93\u6765\u306e DNS \u306f\u9577\u304f\u5e73\u6587\u3067\u4f7f\u308f\u308c\u3066\u304d\u305f\u3002\u5e73\u6587\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u9014\u4e2d\u7d4c\u8def\u306e\u6a5f\u5668\u3084\u4e8b\u696d\u8005\u304b\u3089\u554f\u3044\u5408\u308f\u305b\u5185\u5bb9\u304c\u6bd4\u8f03\u7684\u898b\u3048\u3084\u3059\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002\u3053\u308c\u3092\u6539\u5584\u3059\u308b\u4ed5\u7d44\u307f\u3068\u3057\u3066\u3001\u8fd1\u5e74\u306f DNS over TLS \u3084 DNS over HTTPS \u304c\u4f7f\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u305f\u3060\u3057\u3001\u6697\u53f7\u5316 DNS \u306f\u300c\u8ab0\u306b\u3082\u898b\u3048\u306a\u304f\u306a\u308b\u300d\u4ed5\u7d44\u307f\u3067\u306f\u306a\u3044\u3002\u9014\u4e2d\u7d4c\u8def\u306b\u306f\u898b\u3048\u306b\u304f\u304f\u306a\u308b\u304c\u3001\u6700\u7d42\u7684\u306a\u554f\u3044\u5408\u308f\u305b\u5148\u3067\u3042\u308b DNS \u4e8b\u696d\u8005\u306b\u306f\u5185\u5bb9\u304c\u5c4a\u304f\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6697\u53f7\u5316 DNS \u306f\u4e07\u80fd\u306a\u533f\u540d\u5316\u6280\u8853\u3067\u306f\u306a\u304f\u3001\u300c\u3069\u3053\u307e\u3067\u3092\u9014\u4e2d\u7d4c\u8def\u306b\u6652\u3059\u304b\u300d\u3092\u6539\u5584\u3059\u308b\u6280\u8853\u3067\u3042\u308b\u3002\u3053\u306e\u533a\u5225\u3092\u66d6\u6627\u306b\u3059\u308b\u3068\u3001\u671f\u5f85\u3068\u5b9f\u614b\u306e\u305a\u308c\u304c\u751f\u3058\u3084\u3059\u3044[10]<\/a> [11]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u65b9\u5f0f<\/th>\n\u610f\u5473<\/th>\n<\/tr>\n<\/thead>\n
\u5e73\u6587 DNS<\/td>\n\u4f1d\u7d71\u7684\u306a DNS \u3067\u3042\u308a\u3001\u9014\u4e2d\u7d4c\u8def\u304b\u3089\u554f\u3044\u5408\u308f\u305b\u5185\u5bb9\u304c\u89b3\u6e2c\u3055\u308c\u3084\u3059\u3044\u3002<\/td>\n<\/tr>\n
DNS over TLS<\/td>\nTLS \u306b\u3088\u308a DNS \u554f\u3044\u5408\u308f\u305b\u3092\u6697\u53f7\u5316\u3057\u3001\u9014\u4e2d\u7d4c\u8def\u304b\u3089\u5185\u5bb9\u3092\u898b\u3048\u306b\u304f\u304f\u3059\u308b\u3002<\/td>\n<\/tr>\n
DNS over HTTPS<\/td>\nHTTPS \u4e0a\u3067 DNS \u3092\u6271\u3044\u3001Web \u901a\u4fe1\u306b\u8fd1\u3044\u5f62\u3067\u554f\u3044\u5408\u308f\u305b\u3092\u6697\u53f7\u5316\u3059\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

15. \u30d6\u30e9\u30a6\u30b6\u304c\u72ec\u81ea\u306b DNS \u3092\u4f7f\u3046\u554f\u984c<\/h2>\n

\u8fd1\u5e74\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3001OS \u304c\u6301\u3064 DNS \u8a2d\u5b9a\u3068\u306f\u5225\u306b\u3001\u72ec\u81ea\u306b DNS over HTTPS \u3092\u4f7f\u3046\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u898b\u304b\u3051\u4e0a\u306f\u540c\u3058 DNS \u3092\u4f7f\u3063\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u3001\u5b9f\u969b\u306b\u306f\u30d6\u30e9\u30a6\u30b6\u3060\u3051\u5225\u306e DNS \u4e8b\u696d\u8005\u3078\u554f\u3044\u5408\u308f\u305b\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3067\u306e\u540d\u524d\u89e3\u6c7a\u3068\u30d6\u30e9\u30a6\u30b6\u4e0a\u306e\u540d\u524d\u89e3\u6c7a\u304c\u4e00\u81f4\u3057\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u306e\u70b9\u306f\u3001\u73fe\u4ee3\u306e DNS \u3092\u3084\u3084\u8907\u96d1\u306b\u3057\u3066\u3044\u308b\u3002\u4ee5\u524d\u306f \/etc\/resolv.conf \u3092\u898b\u308c\u3070\u304a\u304a\u3088\u305d\u306e\u5b9f\u614b\u304c\u308f\u304b\u3063\u305f\u304c\u3001\u73fe\u5728\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u304c OS \u306e\u8a2d\u5b9a\u3092\u8fc2\u56de\u3059\u308b\u5834\u5408\u3082\u3042\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001DNS \u8a2d\u8a08\u3084\u969c\u5bb3\u8abf\u67fb\u3092\u884c\u3046\u3068\u304d\u306f\u3001\u300cOS \u306e DNS \u8a2d\u5b9a\u300d\u3068\u300c\u30d6\u30e9\u30a6\u30b6\u3084\u30a2\u30d7\u30ea\u306e\u5b9f\u969b\u306e\u554f\u3044\u5408\u308f\u305b\u5148\u300d\u3092\u5206\u3051\u3066\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b[11]<\/a> [12]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u9805\u76ee<\/th>\n\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n
\u73fe\u8c61<\/td>\nOS \u3084\u30eb\u30fc\u30bf\u30fc\u306b\u8a2d\u5b9a\u3057\u305f DNS \u3068\u306f\u5225\u306b\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u72ec\u81ea\u306e DNS over HTTPS \u3092\u4f7f\u3046\u5834\u5408\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u5f71\u97ff<\/td>\n\u540c\u3058\u7aef\u672b\u5185\u3067\u3082\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u306e\u540d\u524d\u89e3\u6c7a\u3068\u30d6\u30e9\u30a6\u30b6\u306e\u540d\u524d\u89e3\u6c7a\u304c\u5225\u7d4c\u8def\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n
\u5b9f\u52d9\u4e0a\u306e\u610f\u5473<\/td>\nDNS \u30c8\u30e9\u30d6\u30eb\u8abf\u67fb\u3067\u306f OS \u306e\u8a2d\u5b9a\u3060\u3051\u3067\u306f\u8db3\u308a\u305a\u3001\u30a2\u30d7\u30ea\u5074\u306e\u6319\u52d5\u3082\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

16. Linux \u306b\u304a\u3051\u308b DNS \u306e\u57fa\u672c\u69cb\u9020<\/h2>\n

Linux<\/a> \u3067\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u76f4\u63a5 DNS \u30b5\u30fc\u30d0\u30fc\u3078\u554f\u3044\u5408\u308f\u305b\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u3002\u591a\u304f\u306e\u5834\u5408\u306f OS \u5074\u306e\u30ea\u30be\u30eb\u30d0\u3092\u7d4c\u7531\u3057\u3001\u305d\u306e\u5148\u3067 \/etc\/resolv.conf \u3084\u30ed\u30fc\u30ab\u30eb\u306e DNS \u7ba1\u7406\u6a5f\u69cb\u304c\u53c2\u7167\u3055\u308c\u308b\u3002\u3053\u306e\u305f\u3081\u3001Linux \u306e DNS \u306f\u5358\u306b\u3069\u306e nameserver \u304c\u66f8\u304b\u308c\u3066\u3044\u308b\u304b\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u524d\u5f8c\u306b\u4f55\u304c\u5b58\u5728\u3057\u3066\u3044\u308b\u304b\u307e\u3067\u542b\u3081\u3066\u898b\u306a\u3044\u3068\u5b9f\u614b\u304c\u3064\u304b\u307f\u306b\u304f\u3044\u3002\u3053\u3053\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3068\u3001\u300c\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u3053\u3046\u66f8\u304b\u308c\u3066\u3044\u308b\u306e\u306b\u3001\u5b9f\u969b\u306e\u52d5\u4f5c\u304c\u9055\u3046\u300d\u3068\u3044\u3046\u73fe\u8c61\u304c\u8d77\u304d\u3066\u3082\u9a5a\u304b\u306a\u304f\u306a\u308b\u3002Linux \u306e DNS \u306f\u4e00\u679a\u5ca9\u3067\u306f\u306a\u304f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3001\u30ed\u30fc\u30ab\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30b9\u30bf\u30d6\u30ea\u30be\u30eb\u30d0\u306a\u3069\u304c\u91cd\u306a\u3063\u3066\u69cb\u6210\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u78ba\u8a8d\u624b\u9806\u3082 1 \u3064\u3067\u306f\u8db3\u308a\u306a\u3044[13]<\/a> [14]<\/a> [15]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u5c64<\/th>\n\u5f79\u5272<\/th>\n<\/tr>\n<\/thead>\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/td>\n\u30d6\u30e9\u30a6\u30b6\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u7ba1\u7406\u30c4\u30fc\u30eb\u3001\u5404\u7a2e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u540d\u524d\u89e3\u6c7a\u3092\u8981\u6c42\u3059\u308b\u3002<\/td>\n<\/tr>\n
OS \u5074\u306e\u30ea\u30be\u30eb\u30d0<\/td>\nglibc \u306a\u3069\u306e\u4ed5\u7d44\u307f\u304c\u8a2d\u5b9a\u3092\u53c2\u7167\u3057\u3001\u3069\u306e DNS \u3078\u554f\u3044\u5408\u308f\u305b\u308b\u304b\u3092\u6c7a\u3081\u308b\u3002<\/td>\n<\/tr>\n
\u5b9f\u969b\u306e DNS \u7ba1\u7406\u5c64<\/td>\nsystemd-resolved \u3084 NetworkManager \u3084\u624b\u52d5\u8a2d\u5b9a\u304c\u7d61\u307f\u3001\u6700\u7d42\u7684\u306a\u540d\u524d\u89e3\u6c7a\u7d4c\u8def\u304c\u5b9a\u307e\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

17. systemd-resolved\u3001unbound\u3001BIND \u306e\u5f79\u5272<\/h2>\n

Linux<\/a> \u306e DNS \u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u306b\u306f\u3001systemd-resolved\u3001unbound\u3001BIND \u306e\u5f79\u5272\u3092\u6df7\u540c\u3057\u306a\u3044\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002systemd-resolved \u306f\u4e3b\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e DNS \u7ba1\u7406\u3068\u7c21\u6613\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u62c5\u3046\u3002unbound \u306f\u672c\u683c\u7684\u306a\u518d\u5e30\u30ea\u30be\u30eb\u30d0\u3067\u3042\u308a\u3001\u5916\u90e8\u516c\u958b DNS \u3078\u4e38\u6295\u3052\u305b\u305a\u3001\u81ea\u5206\u3067 DNS \u306e\u968e\u5c64\u3092\u305f\u3069\u308b\u69cb\u6210\u3082\u53d6\u308c\u308b\u3002BIND \u306f\u7279\u306b\u6a29\u5a01 DNS \u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066\u6b74\u53f2\u304c\u9577\u304f\u3001\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u6b63\u5f0f\u306a\u56de\u7b54\u3092\u516c\u958b\u3059\u308b\u5074\u3067\u5f37\u3044\u3002\u3064\u307e\u308a\u3001\u4e09\u8005\u306f\u4f3c\u3066\u898b\u3048\u3066\u5f79\u5272\u304c\u9055\u3046\u3002\u4e00\u822c\u7684\u306a Linux \u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u3084\u30ce\u30fc\u30c8 PC \u3067\u306f systemd-resolved \u304c\u81ea\u7136\u3067\u3042\u308a\u3001\u72ec\u7acb\u6027\u3092\u9ad8\u3081\u305f\u3044\u30b5\u30fc\u30d0\u30fc\u3067\u306f unbound \u304c\u6709\u529b\u3067\u3042\u308a\u3001\u81ea\u524d\u30c9\u30e1\u30a4\u30f3\u306e\u5916\u90e8\u516c\u958b\u3067\u306f BIND \u304c\u5019\u88dc\u306b\u306a\u308b\u3002DNS \u306f\u4e00\u3064\u306e\u6280\u8853\u540d\u306b\u898b\u3048\u3066\u3082\u3001\u5b9f\u969b\u306b\u306f\u8907\u6570\u306e\u8cac\u52d9\u304c\u5206\u304b\u308c\u3066\u3044\u308b\u3068\u8003\u3048\u305f\u65b9\u304c\u7406\u89e3\u3057\u3084\u3059\u3044[13]<\/a> [18]<\/a> [19]<\/a> [20]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u4ed5\u7d44\u307f<\/th>\n\u4e3b\u306a\u5f79\u5272<\/th>\n\u5411\u3044\u3066\u3044\u308b\u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
systemd-resolved<\/td>\n\u30ed\u30fc\u30ab\u30eb\u306e\u540d\u524d\u89e3\u6c7a\u7ba1\u7406\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u4e0a\u6d41 DNS \u306e\u4e00\u5143\u7ba1\u7406\u3092\u884c\u3046\u3002<\/td>\n\u4e00\u822c\u7684\u306a Linux \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3084\u3001OS \u7d71\u5408\u7684\u306b\u7ba1\u7406\u3057\u305f\u3044\u74b0\u5883\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n
unbound<\/td>\n\u672c\u683c\u7684\u306a\u518d\u5e30\u30ea\u30be\u30eb\u30d0\u3068\u3057\u3066\u52d5\u4f5c\u3057\u3001\u81ea\u524d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3068 DNSSEC \u691c\u8a3c\u3092\u62c5\u3048\u308b\u3002<\/td>\n\u72ec\u7acb\u6027\u3068\u8aac\u660e\u53ef\u80fd\u6027\u3092\u91cd\u8996\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u904b\u7528\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n
BIND<\/td>\n\u6a29\u5a01 DNS \u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066\u30be\u30fc\u30f3\u60c5\u5831\u3092\u516c\u958b\u3059\u308b\u7528\u9014\u3067\u9577\u304f\u4f7f\u308f\u308c\u3066\u304d\u305f\u3002<\/td>\n\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u5916\u90e8\u3078\u6b63\u5f0f\u306b\u516c\u958b\u3059\u308b\u904b\u7528\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

18. \u73fe\u5728\u306e DNS \u8a2d\u5b9a\u3092\u6b63\u78ba\u306b\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/h2>\n

\u73fe\u5728\u306e DNS \u8a2d\u5b9a\u3092\u6b63\u78ba\u306b\u78ba\u8a8d\u3057\u305f\u3044\u306a\u3089\u30011 \u3064\u306e\u30b3\u30de\u30f3\u30c9\u3060\u3051\u3067\u5224\u65ad\u3057\u306a\u3044\u65b9\u304c\u3088\u3044\u3002Linux \u3067\u306f \/etc\/resolv.conf \u306e\u898b\u305f\u76ee\u3068\u5b9f\u969b\u306e\u6709\u52b9\u7d4c\u8def\u304c\u4e00\u81f4\u3057\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3067\u3042\u308b\u3002\u307e\u305a\u78ba\u8a8d\u3059\u3079\u304d\u306a\u306e\u306f\u3001\/etc\/resolv.conf \u306e\u5b9f\u4f53\u304c\u4f55\u3092\u6307\u3057\u3066\u3044\u308b\u304b\u3067\u3042\u308b\u3002\u5358\u306a\u308b\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u304b\u3001systemd-resolved \u306e\u30b9\u30bf\u30d6\u3092\u6307\u3059\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u306a\u306e\u304b\u3067\u3001\u8aad\u307f\u65b9\u304c\u5909\u308f\u308b\u3002<\/p>\n

1
2
<\/div><\/td>
readlink -f \/etc\/resolv.conf
\n\/etc\/resolv.conf<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u6b21\u306b\u3001systemd-resolved \u304c\u52d5\u3044\u3066\u3044\u308b\u74b0\u5883\u3067\u306f resolvectl status \u3092\u898b\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u73fe\u5728\u3069\u306e\u30ea\u30f3\u30af\u306b\u3069\u306e DNS \u30b5\u30fc\u30d0\u30fc\u304c\u7d10\u3065\u3044\u3066\u3044\u308b\u304b\u3001\u3069\u306e\u691c\u7d22\u30c9\u30e1\u30a4\u30f3\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u3001\u5b9f\u969b\u306e\u904b\u7528\u72b6\u614b\u3068\u3057\u3066\u78ba\u8a8d\u3067\u304d\u308b\u3002\u3053\u308c\u306f\u5358\u306b\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u308b\u3060\u3051\u3088\u308a\u3082\u3001\u73fe\u5728\u306e\u6709\u52b9\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u6b63\u78ba\u3067\u3042\u308b [4]<\/a> [5]<\/a>\u3002<\/p>\n

1
<\/div><\/td>
resolvectl status<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u3055\u3089\u306b\u3001NetworkManager \u3092\u4f7f\u3063\u3066\u3044\u308b\u74b0\u5883\u3067\u306f\u3001device \u3068 connection \u306e\u4e21\u65b9\u3092\u898b\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002device \u306f\u73fe\u5728\u306e\u5b9f\u30c7\u30d0\u30a4\u30b9\u72b6\u614b\u3092\u793a\u3057\u3001connection \u306f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u8a2d\u5b9a\u3092\u793a\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u73fe\u5728\u3064\u306a\u304c\u3063\u3066\u3044\u308b\u30c7\u30d0\u30a4\u30b9\u304c\u3069\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u3066\u3044\u308b\u304b\u3001\u305d\u3057\u3066\u305d\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b DNS \u304c\u3069\u3046\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u4e21\u9762\u304b\u3089\u78ba\u8a8d\u3059\u308b\u306e\u304c\u6b63\u78ba\u3067\u3042\u308b [1]<\/a> [2]<\/a>\u3002<\/p>\n

1
2
<\/div><\/td>
nmcli device show
\nnmcli connection show<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u7279\u5b9a\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3060\u3051\u898b\u305f\u3044\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u7d5e\u308a\u8fbc\u3080\u3068\u3088\u3044\u3002\u3053\u3053\u3067\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u540d\u306e\u4f8b\u3068\u3057\u3066 enp0s31f6 \u3092\u7528\u3044\u308b\u304c\u3001\u5b9f\u969b\u306b\u306f\u5404\u74b0\u5883\u306e\u540d\u79f0\u3078\u7f6e\u304d\u63db\u3048\u308b\u3002<\/p>\n

1
2
<\/div><\/td>
nmcli -f GENERAL.CONNECTION,IP4.DNS,IP6.DNS,IP4.DOMAIN,IP6.DOMAIN device show enp0s31f6
\nnmcli connection show "Wired connection 1"<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u78ba\u8a8d\u306e\u8981\u70b9\u306f\u3001\/etc\/resolv.conf\u3001resolvectl\u3001nmcli \u306e\u4e09\u3064\u3092\u7a81\u304d\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3042\u308b\u3002\u3069\u308c\u304b\u4e00\u3064\u3060\u3051\u3092\u898b\u308b\u3068\u3001\u4fdd\u5b58\u8a2d\u5b9a\u3060\u3051\u3092\u898b\u3066\u73fe\u5728\u72b6\u614b\u3092\u898b\u843d\u3068\u3057\u305f\u308a\u3001\u9006\u306b\u73fe\u5728\u72b6\u614b\u3060\u3051\u3092\u898b\u3066\u6c38\u7d9a\u8a2d\u5b9a\u306e\u4f4d\u7f6e\u3092\u898b\u5931\u3063\u305f\u308a\u3059\u308b\u3002\u6b63\u78ba\u306a\u78ba\u8a8d\u3068\u306f\u3001\u8907\u6570\u30ec\u30a4\u30e4\u30fc\u3092\u7167\u5408\u3057\u3066\u77db\u76fe\u304c\u306a\u3044\u304b\u3092\u898b\u308b\u4f5c\u696d\u3067\u3042\u308b[13]<\/a> [14]<\/a> [15]<\/a> [16]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u78ba\u8a8d\u5bfe\u8c61<\/th>\n\u4ee3\u8868\u7684\u306a\u30b3\u30de\u30f3\u30c9<\/th>\n\u898b\u308b\u610f\u5473<\/th>\n<\/tr>\n<\/thead>\n
\/etc\/resolv.conf \u306e\u5b9f\u4f53<\/td>\nreadlink -f \/etc\/resolv.conf \u3068 cat \/etc\/resolv.conf<\/td>\n\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304c\u5b9f\u30d5\u30a1\u30a4\u30eb\u304b\u3001systemd-resolved \u306e\u30b9\u30bf\u30d6\u3078\u5411\u3044\u305f\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u73fe\u5728\u306e\u30ea\u30be\u30eb\u30d0\u72b6\u614b<\/td>\nresolvectl status<\/td>\nsystemd-resolved \u304c\u898b\u3066\u3044\u308b\u73fe\u5728\u306e DNS \u30b5\u30fc\u30d0\u30fc\u3001\u691c\u7d22\u30c9\u30e1\u30a4\u30f3\u3001\u30ea\u30f3\u30af\u3054\u3068\u306e\u72b6\u614b\u3092\u628a\u63e1\u3067\u304d\u308b\u3002<\/td>\n<\/tr>\n
NetworkManager \u306e\u89b3\u70b9<\/td>\nnmcli device show \u3068 nmcli connection show<\/td>\n\u3069\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u6709\u52b9\u3067\u3001\u305d\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u3069\u306e DNS \u8a2d\u5b9a\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

19. NetworkManager \u306e GENERAL.CONNECTION \u3092\u3069\u3046\u7406\u89e3\u3057\u3001\u3069\u3046\u5909\u66f4\u3059\u308b\u304b<\/h2>\n

nmcli device show \u306e GENERAL.CONNECTION \u306f\u3001\u4eca\u305d\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3069\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u72b6\u614b\u8868\u793a\u3067\u3042\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3092\u300c\u8a2d\u5b9a\u9805\u76ee\u300d\u3068\u898b\u3066\u76f4\u63a5\u66f8\u304d\u63db\u3048\u3088\u3046\u3068\u3059\u308b\u3068\u6df7\u4e71\u3057\u3084\u3059\u3044\u3002\u5b9f\u969b\u306b\u306f\u3001GENERAL.CONNECTION \u3068\u3044\u3046\u6b04\u305d\u306e\u3082\u306e\u3092\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5225\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u3059\u308b\u3053\u3068\u3067\u7d50\u679c\u3068\u3057\u3066\u5909\u308f\u308b\u3068\u7406\u89e3\u3059\u308b\u3079\u304d\u3067\u3042\u308b [1]<\/a> [2]<\/a>\u3002<\/p>\n

\u307e\u305a\u3001\u73fe\u5728\u305d\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u3069\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u3066\u3044\u308b\u304b\u306f\u6b21\u306e\u3088\u3046\u306b\u78ba\u8a8d\u3067\u304d\u308b\u3002<\/p>\n

1
<\/div><\/td>
nmcli -f GENERAL.CONNECTION device show enp0s31f6<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u6b21\u306b\u3001\u5229\u7528\u53ef\u80fd\u306a\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u4e00\u89a7\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n

1
<\/div><\/td>
nmcli connection show<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u5225\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3078\u5207\u308a\u66ff\u3048\u305f\u3044\u5834\u5408\u306f\u3001\u305d\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u5bfe\u8c61\u30c7\u30d0\u30a4\u30b9\u3078\u5bfe\u3057\u3066\u6709\u52b9\u5316\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001GENERAL.CONNECTION \u306e\u8868\u793a\u306f\u7d50\u679c\u3068\u3057\u3066\u65b0\u3057\u3044\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u540d\u3078\u5909\u308f\u308b\u3002<\/p>\n

1
<\/div><\/td>
sudo nmcli connection up "Wired connection 2" ifname enp0s31f6<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u3082\u3057\u7279\u5b9a\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3078\u660e\u793a\u7684\u306b\u7d50\u3073\u4ed8\u3051\u305f\u3044\u5834\u5408\u306f\u3001\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u5074\u306e connection.interface-name \u3092\u8a2d\u5b9a\u3059\u308b\u3002\u3053\u308c\u306f\u300c\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3053\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u4f7f\u3046\u300d\u3068\u3044\u3046\u6c38\u7d9a\u8a2d\u5b9a\u3067\u3042\u308a\u3001GENERAL.CONNECTION \u306e\u3088\u3046\u306a\u72b6\u614b\u8868\u793a\u3068\u306f\u5c64\u304c\u9055\u3046\u3002<\/p>\n

1
2
<\/div><\/td>
sudo nmcli connection modify "Wired connection 2" connection.interface-name enp0s31f6
\nsudo nmcli connection up "Wired connection 2"<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

DNS \u81ea\u4f53\u3092\u305d\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3078\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u3001ipv4.dns \u3084 ipv6.dns \u3092\u7de8\u96c6\u3059\u308b\u3002\u305f\u3068\u3048\u3070 IPv4 \u306e DNS \u3092\u660e\u793a\u3057\u3001\u81ea\u52d5\u53d6\u5f97 DNS \u3092\u7121\u8996\u3057\u305f\u3044\u306a\u3089\u3001\u6b21\u306e\u3088\u3046\u306a\u64cd\u4f5c\u306b\u306a\u308b\u3002<\/p>\n

1
2
3
<\/div><\/td>
sudo nmcli connection modify "Wired connection 2" ipv4.ignore-auto-dns yes
\nsudo nmcli connection modify "Wired connection 2" ipv4.dns "8.8.8.8 1.1.1.1 9.9.9.9"
\nsudo nmcli connection up "Wired connection 2"<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u8981\u3059\u308b\u306b\u3001GENERAL.CONNECTION \u3092\u5909\u3048\u308b\u65b9\u6cd5\u3068\u306f\u3001\u305d\u306e\u6587\u5b57\u5217\u3092\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u3053\u3068\u3067\u306f\u306a\u3044\u3002NetworkManager \u304c\u7ba1\u7406\u3059\u308b\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u7406\u89e3\u3057\u3001\u3069\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u7de8\u96c6\u3057\u3001\u3069\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6709\u52b9\u5316\u3059\u308b\u304b\u3092\u64cd\u4f5c\u3059\u308b\u3053\u3068\u3067\u3001\u7d50\u679c\u3068\u3057\u3066 GENERAL.CONNECTION \u306e\u8868\u793a\u304c\u5909\u308f\u308b\u3002\u3053\u3053\u3092\u53d6\u308a\u9055\u3048\u306a\u3044\u3053\u3068\u304c\u3001nmcli \u3092\u4f7f\u3046\u4e0a\u3067\u306e\u91cd\u8981\u306a\u5b9f\u52d9\u30dd\u30a4\u30f3\u30c8\u3067\u3042\u308b[15]<\/a> [16]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u9805\u76ee<\/th>\n\u610f\u5473<\/th>\n\u5b9f\u52d9\u4e0a\u306e\u6271\u3044<\/th>\n<\/tr>\n<\/thead>\n
GENERAL.CONNECTION<\/td>\n\u73fe\u5728\u305d\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u7d10\u3065\u3044\u3066\u3044\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u793a\u3059\u72b6\u614b\u8868\u793a\u3067\u3042\u308b\u3002<\/td>\n\u3053\u308c\u306f\u72b6\u614b\u6b04\u3067\u3042\u308a\u3001\u901a\u5e38\u306f\u3053\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u81ea\u4f53\u3092\u66f8\u304d\u63db\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5225\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6709\u52b9\u5316\u3057\u3066\u7d50\u679c\u3068\u3057\u3066\u5909\u5316\u3055\u305b\u308b\u3002<\/td>\n<\/tr>\n
\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/td>\nNetworkManager \u304c\u4fdd\u5b58\u3057\u3066\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306e\u5358\u4f4d\u3067\u3042\u308a\u3001DNS \u3084 IP \u8a2d\u5b9a\u306a\u3069\u3092\u542b\u3080\u3002<\/td>\nnmcli connection modify \u3067\u4e2d\u8eab\u3092\u7de8\u96c6\u3057\u3001nmcli connection up \u3067\u30c7\u30d0\u30a4\u30b9\u3078\u9069\u7528\u3059\u308b\u3002<\/td>\n<\/tr>\n
\u5207\u308a\u66ff\u3048\u65b9\u6cd5<\/td>\n\u6709\u52b9\u306a\u30c7\u30d0\u30a4\u30b9\u3078\u5225\u306e\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u8d77\u52d5\u3059\u308b\u3068\u3001GENERAL.CONNECTION \u306e\u8868\u793a\u304c\u305d\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u540d\u3078\u5909\u308f\u308b\u3002<\/td>\n\u3064\u307e\u308a\u898b\u305f\u76ee\u306e\u5909\u66f4\u3067\u306f\u306a\u304f\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u5316\u306e\u7d50\u679c\u3068\u3057\u3066\u72b6\u614b\u6b04\u304c\u5909\u308f\u308b\u3068\u7406\u89e3\u3059\u308b\u306e\u304c\u6b63\u3057\u3044\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

20. Linux \u30b5\u30fc\u30d0\u30fc\u3067 DNS \u8a2d\u8a08\u3092\u3069\u3046\u8003\u3048\u308b\u304b<\/h2>\n

Linux \u30b5\u30fc\u30d0\u30fc<\/a>\u3067 DNS \u3092\u3069\u3046\u8a2d\u8a08\u3059\u308b\u304b\u306f\u3001\u6700\u7d42\u7684\u306b\u306f\u300c\u3069\u3053\u307e\u3067\u81ea\u5206\u3067\u8cac\u4efb\u3092\u6301\u3064\u304b\u300d\u3068\u3044\u3046\u554f\u984c\u3067\u3042\u308b\u3002\u6700\u3082\u7c21\u5358\u306a\u306e\u306f\u30eb\u30fc\u30bf\u30fc\u3084\u516c\u958b DNS \u306b\u4efb\u305b\u308b\u65b9\u5f0f\u3067\u3042\u308a\u3001\u6700\u3082\u72ec\u7acb\u6027\u304c\u9ad8\u3044\u306e\u306f\u81ea\u524d\u306e\u518d\u5e30\u30ea\u30be\u30eb\u30d0\u3092\u6301\u3064\u65b9\u5f0f\u3067\u3042\u308b\u3002\u305d\u306e\u4e2d\u9593\u306b\u3001\u516c\u958b DNS \u3092\u660e\u793a\u3057\u3064\u3064 systemd-resolved \u3084 NetworkManager \u3067\u6574\u7406\u3059\u308b\u69cb\u6210\u304c\u3042\u308b\u3002\u500b\u4eba\u30b5\u30fc\u30d0\u30fc\u3084\u691c\u8a3c\u74b0\u5883\u3067\u306f\u3001\u307e\u305a\u516c\u958b DNS \u3092\u660e\u793a\u7684\u306b\u8a2d\u5b9a\u3057\u3001\u73fe\u5728\u306e\u72b6\u614b\u3092 resolvectl \u3068 nmcli \u3067\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u306e\u304c\u308f\u304b\u308a\u3084\u3059\u3044\u3002\u3053\u308c\u3060\u3051\u3067\u3082\u3001\u30eb\u30fc\u30bf\u30fc\u4efb\u305b\u306e\u69cb\u6210\u3088\u308a\u8cac\u4efb\u5206\u754c\u306f\u304b\u306a\u308a\u660e\u78ba\u306b\u306a\u308b\u3002\u3055\u3089\u306b\u72ec\u7acb\u6027\u3092\u9ad8\u3081\u305f\u304f\u306a\u3063\u305f\u6bb5\u968e\u3067 unbound \u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3092\u5c0e\u5165\u3059\u308c\u3070\u3088\u3044\u3002DNS \u8a2d\u8a08\u3068\u306f\u3001\u6700\u521d\u304b\u3089\u6700\u5f37\u69cb\u6210\u3092\u9078\u3076\u3053\u3068\u3067\u306f\u306a\u304f\u3001\u5fc5\u8981\u306a\u900f\u660e\u6027\u3068\u7ba1\u7406\u8ca0\u8377\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u3053\u3068\u3067\u3042\u308b[13]<\/a> [15]<\/a> [18]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u904b\u7528\u6bb5\u968e<\/th>\n\u5178\u578b\u69cb\u6210<\/th>\n\u5411\u3044\u3066\u3044\u308b\u5834\u9762<\/th>\n<\/tr>\n<\/thead>\n
\u4e00\u822c\u5bb6\u5ead<\/td>\n\u30eb\u30fc\u30bf\u30fc\u3092 DNS \u306e\u7a93\u53e3\u306b\u3059\u308b\u3002<\/td>\n\u7ba1\u7406\u306e\u7c21\u5358\u3055\u3092\u512a\u5148\u3057\u3001\u591a\u6570\u306e\u7aef\u672b\u3092\u4e00\u62ec\u3067\u6271\u3044\u305f\u3044\u5834\u5408\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n
\u500b\u4eba\u30b5\u30fc\u30d0\u30fc<\/td>\n\u516c\u958b DNS \u3092\u660e\u793a\u8a2d\u5b9a\u3059\u308b\u3002<\/td>\n\u554f\u3044\u5408\u308f\u305b\u5148\u3092\u660e\u78ba\u306b\u3057\u3001\u30c8\u30e9\u30d6\u30eb\u5207\u308a\u5206\u3051\u3092\u3057\u3084\u3059\u304f\u3057\u305f\u3044\u5834\u5408\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n
\u672c\u683c\u904b\u7528<\/td>\nunbound \u306e\u3088\u3046\u306a\u30ed\u30fc\u30ab\u30eb\u518d\u5e30\u30ea\u30be\u30eb\u30d0\u3092\u4f7f\u3046\u3002<\/td>\n\u72ec\u7acb\u6027\u3001\u8aac\u660e\u53ef\u80fd\u6027\u3001DNSSEC \u691c\u8a3c\u3092\u91cd\u8996\u3059\u308b\u5834\u5408\u306b\u5411\u304f\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

21. \u7d50\u8ad6<\/h2>\n

DNS \u306e\u8a71\u306f\u3001\u8868\u9762\u4e0a\u306f\u300c\u3069\u306e\u6570\u5b57\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u300d\u3068\u3044\u3046\u5358\u7d14\u306a\u8a71\u306b\u898b\u3048\u308b\u3002\u3057\u304b\u3057\u5b9f\u969b\u306b\u306f\u3001\u3069\u3053\u3078\u540d\u524d\u89e3\u6c7a\u3092\u59d4\u306d\u308b\u304b\u3001\u8ab0\u306b\u554f\u3044\u5408\u308f\u305b\u5c65\u6b74\u3092\u5bc4\u305b\u308b\u304b\u3001\u3069\u306e\u7a0b\u5ea6\u306e\u4e2d\u7acb\u6027\u3068\u9632\u5fa1\u6027\u3092\u6c42\u3081\u308b\u304b\u3001\u305d\u3057\u3066\u969c\u5bb3\u6642\u306b\u3069\u3053\u307e\u3067\u81ea\u5206\u3067\u8aac\u660e\u53ef\u80fd\u306b\u3057\u305f\u3044\u304b\u3068\u3044\u3046\u8a2d\u8a08\u554f\u984c\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3002\u3057\u305f\u304c\u3063\u3066 DNS \u8a2d\u5b9a\u306f\u3001\u901f\u5ea6\u6bd4\u8f03\u306e\u5c0f\u624b\u5148\u3067\u306f\u306a\u304f\u3001\u904b\u7528\u54f2\u5b66\u306b\u5c5e\u3059\u308b\u8a2d\u5b9a\u3067\u3042\u308b\u3002\u4e00\u822c\u5bb6\u5ead\u3067\u306f\u3001\u30eb\u30fc\u30bf\u30fc DNS \u3067\u5341\u5206\u306a\u5834\u5408\u304c\u591a\u3044\u3002\u500b\u4eba\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u3001\u516c\u958b DNS \u3092\u660e\u793a\u3057\u3001\u5b9f\u969b\u306e\u72b6\u614b\u3092\u30b3\u30de\u30f3\u30c9\u3067\u8ffd\u3048\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3068\u904b\u7528\u304c\u6574\u7406\u3057\u3084\u3059\u3044\u3002\u3055\u3089\u306b\u72ec\u7acb\u6027\u3092\u6c42\u3081\u308b\u306a\u3089\u3001unbound \u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u3092\u5c0e\u5165\u3059\u308b\u9053\u304c\u3042\u308b\u3002\u305d\u3057\u3066 NetworkManager \u3092\u4f7f\u3046\u74b0\u5883\u3067\u306f\u3001GENERAL.CONNECTION \u3092\u76f4\u63a5\u5909\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u63a5\u7d9a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u7de8\u96c6\u3068\u30a2\u30af\u30c6\u30a3\u30d6\u5316\u306b\u3088\u3063\u3066\u7d50\u679c\u3068\u3057\u3066\u5909\u308f\u308b\u3082\u306e\u3060\u3068\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3001\u6df7\u4e71\u3092\u907f\u3051\u308b\u6700\u77ed\u7d4c\u8def\u3067\u3042\u308b[13]<\/a> [15]<\/a> [18]<\/a>\u3002<\/p>\n\n\n\n\n\n\n\n
\u7d50\u8ad6\u9805\u76ee<\/th>\n\u6574\u7406<\/th>\n<\/tr>\n<\/thead>\n
DNS \u306e\u672c\u8cea<\/td>\nDNS \u306f\u5358\u306a\u308b\u88dc\u52a9\u8a2d\u5b9a\u3067\u306f\u306a\u304f\u3001\u901a\u4fe1\u306e\u5165\u53e3\u306b\u3042\u308b\u540d\u524d\u89e3\u6c7a\u57fa\u76e4\u3067\u3042\u308a\u3001\u969c\u5bb3\u6642\u306e\u5f71\u97ff\u7bc4\u56f2\u304c\u5927\u304d\u3044\u3002<\/td>\n<\/tr>\n
\u69cb\u6210\u9078\u629e<\/td>\n\u30eb\u30fc\u30bf\u30fc DNS \u306f\u7c21\u5358\u3055\u306b\u512a\u308c\u3001\u516c\u958b DNS \u76f4\u6307\u5b9a\u306f\u900f\u660e\u6027\u306b\u512a\u308c\u3001unbound \u306e\u3088\u3046\u306a\u69cb\u6210\u306f\u72ec\u7acb\u6027\u306b\u512a\u308c\u308b\u3002<\/td>\n<\/tr>\n
\u5b9f\u52d9\u30dd\u30a4\u30f3\u30c8<\/td>\n\u73fe\u5728\u72b6\u614b\u306e\u78ba\u8a8d\u3067\u306f \/etc\/resolv.conf\u3001resolvectl\u3001nmcli \u3092\u7167\u5408\u3057\u3001GENERAL.CONNECTION \u306f\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u6b04\u3067\u306f\u306a\u304f\u7d50\u679c\u8868\u793a\u3060\u3068\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

DNS \u306e\u8a2d\u5b9a\u306f\u5358\u306a\u308b\u88dc\u52a9\u7684\u306a\u9805\u76ee\u3067\u306f\u306a\u304f\u3001\u901a\u4fe1\u306e\u6210\u7acb\u6761\u4ef6\u305d\u306e\u3082\u306e\u306b\u95a2\u308f\u308b\u69cb\u6210\u8981\u7d20\u3067\u3042\u308b\u3002Public DNS \u3092\u5229\u7528\u3059\u308b\u304b\u3001\u56de\u7dda\u4e8b\u696d\u8005\u306e DNS \u3092\u5229\u7528\u3059\u308b\u304b\u306b\u3088\u3063\u3066\u3001\u6319\u52d5\u306e\u900f\u660e\u6027\u3084\u5236\u5fa1\u6027\u306f\u5909\u5316\u3059\u308b\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3069\u306e DNS \u3092\u63a1\u7528\u3059\u308b\u304b\u306f\u74b0\u5883\u3084\u76ee\u7684\u306b\u5fdc\u3058\u305f\u904b\u7528\u5224\u65ad\u3068\u3057\u3066\u4f4d\u7f6e\u3065\u3051\u308b\u306e\u304c\u81ea\u7136\u3067\u3042\u308b\u3002<\/p>\n

\n

\u53c2\u8003\u6587\u732e<\/h2>\n
    \n
  1. RFC 1034 – Domain Names – Concepts and Facilities.. https:\/\/datatracker.ietf.org\/doc\/html\/rfc1034<\/a><\/li>\n
  2. RFC 1035 – Domain Names – Implementation and Specification.. https:\/\/datatracker.ietf.org\/doc\/html\/rfc1035<\/a><\/li>\n
  3. Google Public DNS.. https:\/\/developers.google.com\/speed\/public-dns<\/a><\/li>\n
  4. Get Started | Public DNS.. https:\/\/developers.google.com\/speed\/public-dns\/docs\/using<\/a><\/li>\n
  5. Cloudflare 1.1.1.1 (DNS Resolver).. https:\/\/developers.cloudflare.com\/1.1.1.1\/<\/a><\/li>\n
  6. Cloudflare 1.1.1.1 IP addresses.. https:\/\/developers.cloudflare.com\/1.1.1.1\/ip-addresses\/<\/a><\/li>\n
  7. Quad9 Documentation: Overview.. https:\/\/quad9dns.github.io\/documentation\/<\/a><\/li>\n
  8. Quad9 Service Addresses & Features.. https:\/\/quad9.net\/service\/service-addresses-and-features\/<\/a><\/li>\n
  9. Quad9 FAQ.. https:\/\/quad9.net\/support\/faq\/<\/a><\/li>\n
  10. RFC 7858 – Specification for DNS over TLS.. https:\/\/datatracker.ietf.org\/doc\/rfc7858\/<\/a><\/li>\n
  11. RFC 8484 – DNS Queries over HTTPS (DoH).. https:\/\/datatracker.ietf.org\/doc\/html\/rfc8484<\/a><\/li>\n
  12. Firefox DNS over HTTPS – Mozilla Support.. https:\/\/support.mozilla.org\/en-US\/kb\/firefox-dns-over-https<\/a><\/li>\n
  13. systemd-resolved.service.. https:\/\/www.freedesktop.org\/software\/systemd\/man\/systemd-resolved.service.html<\/a><\/li>\n
  14. resolvectl(1).. https:\/\/man7.org\/linux\/man-pages\/man1\/resolvectl.1.html<\/a><\/li>\n
  15. NetworkManager Reference Manual – nmcli.. https:\/\/networkmanager.pages.freedesktop.org\/NetworkManager\/NetworkManager\/nmcli.html<\/a><\/li>\n
  16. NetworkManager Reference Manual – nm-settings-nmcli.. https:\/\/networkmanager.pages.freedesktop.org\/NetworkManager\/NetworkManager\/nm-settings-nmcli.html<\/a><\/li>\n
  17. NetworkManager Reference Manual.. https:\/\/networkmanager.pages.freedesktop.org\/NetworkManager\/NetworkManager\/index.html<\/a><\/li>\n
  18. Unbound documentation.. https:\/\/unbound.docs.nlnetlabs.nl\/<\/a><\/li>\n
  19. BIND 9.. https:\/\/www.isc.org\/bind\/<\/a><\/li>\n
  20. BIND 9 documentation.. https:\/\/bind9.readthedocs.io\/en\/latest\/<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    \u672c\u7a3f\u306f\u3001DNS \u306e\u57fa\u672c\u304b\u3089\u3001\u516c\u958b DNS \uff08Public DNS\uff09\u3068\u5bb6\u5ead\u7528\u30eb\u30fc\u30bf\u30fc\u3092\u7a93\u53e3\u306b\u3059\u308b\u69cb\u6210\u306e\u9055\u3044\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8003\u3048\u65b9\u3001Linux \u306b\u304a\u3051\u308b\u78ba\u8a8d\u65b9\u6cd5\u3001\u305d\u3057\u3066 NetworkManager \u3092\u4f7f\u3063\u3066\u63a5 … \u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-4044","post","type-post","status-publish","format-standard","hentry","category-tech"],"_links":{"self":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/4044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/comments?post=4044"}],"version-history":[{"count":15,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/4044\/revisions"}],"predecessor-version":[{"id":4356,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/4044\/revisions\/4356"}],"wp:attachment":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/media?parent=4044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/categories?post=4044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/tags?post=4044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}