{"id":476943,"date":"2023-08-09T09:05:36","date_gmt":"2023-08-09T09:05:36","guid":{"rendered":""},"modified":"2023-09-05T11:13:44","modified_gmt":"2023-09-05T11:13:44","slug":"dns-srv-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/dns-srv-record\/","title":{"rendered":"DNS SRV \u30ec\u30b3\u30fc\u30c9"},"content":{"rendered":"<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30c9\u30e1\u30a4\u30f3 \u30cd\u30fc\u30e0 \u30b7\u30b9\u30c6\u30e0 (DNS) \u306e\u7279\u5b9a\u306e\u7a2e\u985e\u306e\u30c7\u30fc\u30bf \u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002\u7279\u5b9a\u306e\u30b7\u30b9\u30c6\u30e0\u304a\u3088\u3073\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u5229\u7528\u53ef\u80fd\u306a\u30b5\u30fc\u30d3\u30b9\u3001\u305d\u306e\u5834\u6240\u3001\u304a\u3088\u3073\u5bfe\u5fdc\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<h2>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u8d77\u6e90\u3068\u6700\u521d\u306e\u8a00\u53ca<\/h2>\n<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u6b74\u53f2\u306f 1990 \u5e74\u4ee3\u306b\u9061\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u30012000 \u5e74 2 \u6708\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u30bf\u30b9\u30af \u30d5\u30a9\u30fc\u30b9 (IETF) \u306b\u3088\u3063\u3066\u516c\u958b\u3055\u308c\u305f RFC (Request for Comments) 2782 \u3067\u521d\u3081\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001IP \u30a2\u30c9\u30ec\u30b9\u3092\u30db\u30b9\u30c8\u540d\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u5f93\u6765\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u6539\u5584\u3057\u305f\u3082\u306e\u3068\u3057\u3066\u5c0e\u5165\u3055\u308c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b5\u30fc\u30d3\u30b9\u3068\u305d\u306e\u5834\u6240\u3092\u3088\u308a\u304d\u3081\u7d30\u304b\u304f\u7ba1\u7406\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30c8\u30d4\u30c3\u30af\u306e\u62e1\u5f35: DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u8a73\u7d30<\/h2>\n<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u5185\u306e\u7279\u5b9a\u306e\u30b5\u30fc\u30d3\u30b9 \u30bf\u30a4\u30d7\u3068\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u57fa\u3065\u3044\u3066\u3001\u30b5\u30fc\u30d0\u30fc (\u30b5\u30fc\u30d3\u30b9) \u306e\u53ef\u7528\u6027\u3068\u5834\u6240\u3092\u5b9a\u7fa9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u57fa\u672c\u7684\u306b\u3001\u30b5\u30fc\u30d3\u30b9\u3068\u305d\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u30db\u30b9\u30c8\u540d\u3068\u306e\u9593\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u3092\u63d0\u4f9b\u3059\u308b\u6c4e\u7528\u30ea\u30bd\u30fc\u30b9 \u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<p>\u5404 SRV \u30ec\u30b3\u30fc\u30c9\u306b\u306f\u3001\u5358\u4e00\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf \u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b5\u30fc\u30d3\u30b9: \u30b5\u30fc\u30d3\u30b9\u306e\u540d\u524d\u3002<\/li>\n<li>\u30d7\u30ed\u30c8\u30b3\u30eb: \u4f7f\u7528\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u7a2e\u985e (\u901a\u5e38\u306f TCP \u307e\u305f\u306f UDP)\u3002<\/li>\n<li>\u540d\u524d: \u30b5\u30fc\u30d3\u30b9\u304c\u63d0\u4f9b\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u540d\u3002<\/li>\n<li>TTL: Time to Live\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u5185\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u6709\u52b9\u671f\u9593\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30b9: DNS \u30af\u30e9\u30b9 \u30d5\u30a3\u30fc\u30eb\u30c9 (\u901a\u5e38\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u5834\u5408\u306f IN)\u3002<\/li>\n<li>\u512a\u5148\u5ea6: \u30e1\u30fc\u30eb\u4ea4\u63db\u30ec\u30b3\u30fc\u30c9\u3068\u540c\u69d8\u306b\u3001\u5024\u304c\u4f4e\u3044\u307b\u3069\u512a\u5148\u5ea6\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u91cd\u307f: \u8907\u6570\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u512a\u5148\u5ea6\u304c\u540c\u3058\u5834\u5408\u306b\u8ca0\u8377\u5206\u6563\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30dd\u30fc\u30c8: \u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b TCP \u307e\u305f\u306f UDP \u30dd\u30fc\u30c8\u3002<\/li>\n<li>\u30bf\u30fc\u30b2\u30c3\u30c8: \u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u30de\u30b7\u30f3\u306e\u6b63\u898f\u306e\u30db\u30b9\u30c8\u540d\u3002<\/li>\n<\/ul>\n<h2>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u5185\u90e8\u69cb\u9020\u3068\u6a5f\u80fd\u306e\u7406\u89e3<\/h2>\n<p>\u4e00\u822c\u7684\u306a DNS SRV \u30ec\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u5f62\u5f0f\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><code data-no-translation=\"\">_Service._Proto.Name TTL Class SRV Priority Weight Port Target<\/code><\/p>\n<p>\u3069\u3053 <code data-no-translation=\"\">_Service<\/code> \u30b5\u30fc\u30d3\u30b9\u306e\u30b7\u30f3\u30dc\u30eb\u540d\u3067\u3059\u3002 <code data-no-translation=\"\">_Proto<\/code> \u4f7f\u7528\u3055\u308c\u308b\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\uff08TCP\u307e\u305f\u306fUDP\uff09\u3067\u3042\u308a\u3001 <code data-no-translation=\"\">Name<\/code> \u30c9\u30e1\u30a4\u30f3\u540d\u3067\u3059\u3002 <code data-no-translation=\"\">TTL<\/code>, <code data-no-translation=\"\">Class<\/code>, <code data-no-translation=\"\">SRV<\/code>, <code data-no-translation=\"\">Priority<\/code>, <code data-no-translation=\"\">Weight<\/code>, <code data-no-translation=\"\">Port<\/code>\u3001 \u305d\u3057\u3066 <code data-no-translation=\"\">Target<\/code> \u3059\u3079\u3066\u524d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8aac\u660e\u3057\u305f\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u30b5\u30fc\u30d3\u30b9\u8981\u6c42\u304c\u5c4a\u304f\u3068\u3001DNS SRV \u30ec\u30b3\u30fc\u30c9\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u305d\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u30db\u30b9\u30c8\u540d\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u3053\u306e\u60c5\u5831\u3092\u5229\u7528\u3057\u3066\u9069\u5207\u306a\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>DNS SRV\u30ec\u30b3\u30fc\u30c9\u306e\u4e3b\u306a\u6a5f\u80fd<\/h2>\n<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u3042\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b7\u30b9\u30c6\u30e0\u306e\u91cd\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30b5\u30fc\u30d3\u30b9\u691c\u51fa: DNS SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d3\u30b9\u306e\u5b58\u5728\u3068\u5834\u6240\u3092\u691c\u51fa\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<li>\u8ca0\u8377\u5206\u6563: SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u300c\u91cd\u307f\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u901a\u3058\u3066\u3001\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u306e\u5358\u7d14\u306a\u8ca0\u8377\u5206\u6563\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc \u30e1\u30ab\u30cb\u30ba\u30e0: \u300c\u512a\u5148\u5ea6\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc \u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u78ba\u7acb\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u30d7\u30e9\u30a4\u30de\u30ea \u30b5\u30fc\u30d0\u30fc\u306b\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \u30b5\u30fc\u30d0\u30fc\u306b\u8a98\u5c0e\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d7\u30ed\u30c8\u30b3\u30eb\u4ed5\u69d8: \u30b5\u30fc\u30d3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u6307\u5b9a\u3067\u304d\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d3\u30b9\u691c\u51fa\u304c\u3055\u3089\u306b\u6d17\u7df4\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u7a2e\u985e<\/h2>\n<p>SRV \u30ec\u30b3\u30fc\u30c9\u306b\u306f\u660e\u78ba\u306a\u300c\u30bf\u30a4\u30d7\u300d\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30b5\u30fc\u30d3\u30b9\u3084\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u3063\u3066 SRV \u30ec\u30b3\u30fc\u30c9\u306e\u30a8\u30f3\u30c8\u30ea\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001SRV \u30ec\u30b3\u30fc\u30c9\u3092\u5229\u7528\u3059\u308b\u4e00\u822c\u7684\u306a\u30b5\u30fc\u30d3\u30b9\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><code data-no-translation=\"\">_sip._tcp.example.com<\/code>: example.com \u306e TCP \u7d4c\u7531\u306e SIP (\u30bb\u30c3\u30b7\u30e7\u30f3\u958b\u59cb\u30d7\u30ed\u30c8\u30b3\u30eb) \u30b5\u30fc\u30d0\u30fc\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li><code data-no-translation=\"\">_imap._tcp.example.com<\/code>: example.com \u306e TCP \u7d4c\u7531\u306e IMAP (\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30e1\u30c3\u30bb\u30fc\u30b8 \u30a2\u30af\u30bb\u30b9 \u30d7\u30ed\u30c8\u30b3\u30eb) \u30b5\u30fc\u30d0\u30fc\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li><code data-no-translation=\"\">_autodiscover._tcp.example.com<\/code>: example.com \u306e TCP \u7d4c\u7531\u306e\u81ea\u52d5\u691c\u51fa\u7528\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u4f7f\u7528\u3001\u8ab2\u984c\u3001\u89e3\u6c7a\u7b56<\/h2>\n<p>SRV \u30ec\u30b3\u30fc\u30c9\u306e\u4f7f\u7528\u306f\u3001VoIP\u3001IMAP\u3001POP3\u3001SIP\u3001XMPP \u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u30b5\u30fc\u30d3\u30b9\u3067\u4e00\u822c\u7684\u3067\u3059\u3002SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9069\u5207\u306a\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306e\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306f\u6709\u7528\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u306b\u76f4\u9762\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u3059\u3079\u3066\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30b7\u30b9\u30c6\u30e0\u304c SRV \u30ec\u30b3\u30fc\u30c9\u3092\u51e6\u7406\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u305d\u306e\u7528\u9014\u306f\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u3053\u308c\u3089\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u8aa4\u3063\u3066\u69cb\u6210\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u4e2d\u65ad\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u8ab2\u984c\u3092\u8efd\u6e1b\u3059\u308b\u306b\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u304c\u66f4\u65b0\u3055\u308c\u3001SRV \u30ec\u30b3\u30fc\u30c9\u3092\u51e6\u7406\u3067\u304d\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002DNS \u30ec\u30b3\u30fc\u30c9\u3092\u5b9a\u671f\u7684\u306b\u76e3\u67fb\u3059\u308b\u3053\u3068\u3067\u3001\u8aa4\u3063\u305f\u69cb\u6210\u3092\u9632\u6b62\u304a\u3088\u3073\u4fee\u6b63\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>DNS SRV\u30ec\u30b3\u30fc\u30c9\u306e\u7279\u5fb4\u3068\u6bd4\u8f03<\/h2>\n<p>SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001A\u3001AAAA\u3001CNAME \u30ec\u30b3\u30fc\u30c9\u306a\u3069\u306e\u4ed6\u306e DNS \u30ec\u30b3\u30fc\u30c9 \u30bf\u30a4\u30d7\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002SRV \u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u5834\u6240\u3092\u63d0\u4f9b\u3059\u308b\u3060\u3051\u3067\u306a\u304f (A \u30ec\u30b3\u30fc\u30c9\u304c\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066\u3001CNAME \u304c\u30a8\u30a4\u30ea\u30a2\u30b9\u306b\u5bfe\u3057\u3066\u884c\u3046\u3088\u3046\u306b)\u3001\u30b5\u30fc\u30d3\u30b9 \u30dd\u30fc\u30c8\u3001\u512a\u5148\u5ea6\u3001\u91cd\u307f\u306a\u3069\u306e\u8ffd\u52a0\u60c5\u5831\u3082\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u7c21\u5358\u306a\u6bd4\u8f03\u8868\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>DNS\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7<\/th>\n<th>IP \u3092\u63d0\u4f9b\u3057\u307e\u3059\u304b?<\/th>\n<th>\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304b?<\/th>\n<th>\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304b?<\/th>\n<th>\u512a\u5148\u5ea6\u3068\u91cd\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u304b?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\uff21\/\uff21\uff21\uff21\uff21\uff21<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<\/tr>\n<tr>\n<td>\uff23\uff2e\uff21\uff2d\uff25<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<\/tr>\n<tr>\n<td>SRV<\/td>\n<td>\u3044\u3044\u3048<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u5c06\u6765<\/h2>\n<p>\u30b5\u30fc\u30d3\u30b9\u306e\u5206\u6563\u5316\u304c\u9032\u307f\u3001\u30b5\u30fc\u30d3\u30b9\u691c\u51fa\u3068\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc \u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u5fc5\u8981\u6027\u304c\u9ad8\u307e\u308b\u306b\u3064\u308c\u3066\u3001DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u5f79\u5272\u306f\u3088\u308a\u91cd\u8981\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u5c06\u6765\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u306b\u3088\u3063\u3066 SRV \u30ec\u30b3\u30fc\u30c9\u306e\u52b9\u7387\u3068\u4fe1\u983c\u6027\u304c\u5411\u4e0a\u3057\u3001\u73fe\u4ee3\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068 DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u4ea4\u5dee\u70b9<\/h2>\n<p>OneProxy \u304c\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001DNS SRV \u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u306e DNS \u30ec\u30b3\u30fc\u30c9\u306b\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d3\u30b9\u306e SRV \u30ec\u30b3\u30fc\u30c9\u3092\u542b\u3081\u308b\u3068\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d3\u30b9\u306e\u5b58\u5728\u3068\u63a5\u7d9a\u60c5\u5831\u3092\u81ea\u52d5\u7684\u306b\u691c\u51fa\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u5b9f\u88c5\u306b\u3088\u308a\u3001\u69cb\u6210\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3068\u8ca0\u8377\u5206\u6563\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u4fe1\u983c\u6027\u3068\u52b9\u7387\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2782\" target=\"_new\" rel=\"noopener nofollow\">RFC 2782 \u2013 \u30b5\u30fc\u30d3\u30b9\u306e\u5834\u6240\u3092\u6307\u5b9a\u3059\u308b\u305f\u3081\u306e DNS RR (DNS SRV)<\/a><\/li>\n<li><a href=\"https:\/\/support.dnsimple.com\/articles\/srv-record\/\" target=\"_new\" rel=\"noopener nofollow\">SRV \u30ec\u30b3\u30fc\u30c9 \u2013 DNSimple \u30d8\u30eb\u30d7<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dns-records\/dns-srv-record\/\" target=\"_new\" rel=\"noopener nofollow\">\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u306b DNS \u30b5\u30fc\u30d3\u30b9 (SRV) \u30ec\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/dns\/srv-resource-records\" target=\"_new\" rel=\"noopener nofollow\">SRV \u30ea\u30bd\u30fc\u30b9 \u30ec\u30b3\u30fc\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dns-records\/dns-srv-record\/\" target=\"_new\" rel=\"noopener nofollow\">DNS SRV \u30ec\u30b3\u30fc\u30c9\u306e\u7406\u89e3<\/a><\/li>\n<\/ol>","protected":false},"featured_media":476944,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476943","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Understanding the DNS SRV Record<\/mark>","faq_items":[{"question":"What is a DNS SRV record?","answer":"<p>A DNS SRV record is a specific type of data record in the Domain Name System. It provides information about available services, their locations, and their corresponding protocols within specific systems and networks.<\/p>"},{"question":"When was the DNS SRV record first mentioned?","answer":"<p>The DNS SRV record was first mentioned in the Request for Comments (RFC) 2782, published by the Internet Engineering Task Force (IETF) in February 2000.<\/p>"},{"question":"What information does a DNS SRV record contain?","answer":"<p>A DNS SRV record contains the name of the service, the protocol type, the domain name where the service is offered, Time to Live (TTL), the DNS class field, priority and weight (used for load balancing and failover mechanism), the port where the service can be accessed, and the canonical hostname of the machine providing the service.<\/p>"},{"question":"How does a DNS SRV record work?","answer":"<p>When a service request comes to a network, the DNS SRV record allows the network to provide the hostname and port number of the server offering that service. The client's software can then utilize this information to connect to the appropriate server.<\/p>"},{"question":"How does a DNS SRV record aid in load balancing and establishing a failover mechanism?","answer":"<p>The 'weight' field in the SRV record allows for load balancing among multiple servers. The 'priority' field helps in directing traffic to backup servers if the primary one fails, thus enabling a failover mechanism.<\/p>"},{"question":"Are there different types of DNS SRV records?","answer":"<p>There aren't distinct \"types\" of SRV records. However, different services and protocols have different SRV record entries. Some common services utilizing SRV records include SIP (Session Initiation Protocol), IMAP (Internet Message Access Protocol), and Autodiscover.<\/p>"},{"question":"What challenges are associated with DNS SRV records and how can they be mitigated?","answer":"<p>Challenges associated with DNS SRV records include limited application due to some client software systems not handling SRV records and service disruptions due to misconfigurations. Regular audits of the DNS records and ensuring the client software can handle SRV records can mitigate these issues.<\/p>"},{"question":"How does a DNS SRV record differ from other DNS record types?","answer":"<p>Unlike A, AAAA, and CNAME records, an SRV record provides additional information such as the service port, priority, and weight, in addition to the location of the service.<\/p>"},{"question":"What is the future of DNS SRV records?","answer":"<p>The role of DNS SRV records is likely to become more crucial as services become more distributed, and the need for service discovery and failover mechanisms increases.<\/p>"},{"question":"How can proxy servers like OneProxy be associated with DNS SRV records?","answer":"<p>By including an SRV record for the proxy service in a domain's DNS records, clients can automatically discover the proxy service's existence and its connection information, making configuration easier and improving overall network reliability and efficiency.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476943\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/476944"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=476943"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}