{"id":30548,"date":"2026-03-04T14:59:20","date_gmt":"2026-03-04T06:59:20","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/why-ip-can-be-accessed-but-the-domain-cannot-be-opened\/"},"modified":"2026-03-04T15:07:10","modified_gmt":"2026-03-04T07:07:10","slug":"why-ip-can-be-accessed-but-the-domain-cannot-be-opened","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/why-ip-can-be-accessed-but-the-domain-cannot-be-opened\/","title":{"rendered":"\u4e3a\u4f55IP\u53ef\u8bbf\u95ee\u4f46\u57df\u540d\u65e0\u6cd5\u6253\u5f00"},"content":{"rendered":"<p>\u4f60\u53ef\u80fd\u4f1a\u7591\u60d1\uff0c\u4e3a\u4f55\u4f7f\u7528\u6570\u5b57\u5f62\u5f0f\u7684IP\u80fd\u8bbf\u95ee\u7f51\u7ad9\uff0c\u8f93\u5165\u57df\u540d\u5374\u65e0\u6cd5\u6253\u5f00\u3002\u8fd9\u4e2a\u95ee\u9898\u5e38\u5e38\u8ba9\u4eba\u56f0\u60d1\u3002\u5f88\u591a\u65f6\u5019IP\u53ef\u6b63\u5e38\u8bbf\u95ee\uff0c\u57df\u540d\u5374\u52a0\u8f7d\u5931\u8d25\uff0c\u539f\u56e0\u901a\u5e38\u6d89\u53ca<a href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/dns-resolution-process-local-vs-server-side-query-priority\/\" target=\"_blank\">DNS\u9519\u8bef<\/a>\u3001\u4e25\u683c\u7684\u9632\u706b\u5899\u89c4\u5219\u6216<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/\" target=\"_blank\">\u670d\u52a1\u5668\u914d\u7f6e<\/a>\u9519\u8bef\u3002\u4f60\u4e0d\u5fc5\u675f\u624b\u65e0\u7b56\uff0c\u8fd9\u7c7b\u95ee\u9898\u7684\u5927\u591a\u6570\u89e3\u51b3\u65b9\u6848\u90fd\u7b80\u5355\u6613\u64cd\u4f5c\u3002<\/p>\n<h2>DNS\u95ee\u9898\u4e0eIP\u53ef\u8bbf\u95ee\u7684\u539f\u56e0<\/h2>\n<h3>DNS\u89e3\u6790\u6d41\u7a0b<\/h3>\n<p>\u5f53\u4f60\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\u7f51\u7ad9\u57df\u540d\u65f6\uff0c\u8bbe\u5907\u65e0\u6cd5\u76f4\u63a5\u83b7\u77e5\u5176IP\u5730\u5740\uff0c\u9700\u8981\u501f\u52a9**\u57df\u540d\u7cfb\u7edf\uff08DNS\uff09** \u5b8c\u6210\u89e3\u6790\u3002DNS\u5c31\u50cf\u4e92\u8054\u7f51\u7684\u7535\u8bdd\u7c3f\uff0c\u5e38\u89c4\u89e3\u6790\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\n<p>\u4f60\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\u7f51\u5740\uff0c\u6d4f\u89c8\u5668\u5c06\u5176\u8f6c\u6362\u4e3a\u5b8c\u5168\u9650\u5b9a\u57df\u540d\uff08FQDN\uff09\u3002<\/p>\n<\/li>\n<li>\n<p>\u6d4f\u89c8\u5668\u5411\u89e3\u6790\u670d\u52a1\u5668\u8bf7\u6c42\u67e5\u8be2\u8be5\u5b8c\u5168\u9650\u5b9a\u57df\u540d\u5bf9\u5e94\u7684IP\u5730\u5740\u3002<\/p>\n<\/li>\n<li>\n<p>\u89e3\u6790\u670d\u52a1\u5668\u5411\u6839\u57df\u540d\u670d\u52a1\u5668\u67e5\u8be2\uff0c\u83b7\u53d6\u5bf9\u5e94\u9876\u7ea7\u57df\u540d\uff08TLD\uff09\u670d\u52a1\u5668\u7684\u5730\u5740\u3002<\/p>\n<\/li>\n<li>\n<p>\u89e3\u6790\u670d\u52a1\u5668\u8fde\u63a5\u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668\uff0c\u83b7\u53d6\u6743\u5a01\u57df\u540d\u670d\u52a1\u5668\u5730\u5740\u3002<\/p>\n<\/li>\n<li>\n<p>\u89e3\u6790\u670d\u52a1\u5668\u5411\u6743\u5a01\u57df\u540d\u670d\u52a1\u5668\u8bf7\u6c42\u7f51\u7ad9\u771f\u5b9eIP\u5730\u5740\u3002<\/p>\n<\/li>\n<li>\n<p>\u89e3\u6790\u670d\u52a1\u5668\u5c06IP\u5730\u5740\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\uff0c\u4f60\u5373\u53ef\u6b63\u5e38\u8bbf\u95ee\u7f51\u7ad9\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u53ea\u8981\u5176\u4e2d\u4efb\u610f\u4e00\u6b65\u5931\u8d25\uff0c\u5c31\u53ef\u80fd\u51fa\u73b0\u4ec5IP\u53ef\u8bbf\u95ee\u3001\u57df\u540d\u65e0\u6cd5\u6253\u5f00\u7684\u60c5\u51b5\u3002<\/p>\n<h3>\u5e38\u89c1DNS\u9519\u8bef<\/h3>\n<p>DNS\u95ee\u9898\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u901a\u8fc7\u57df\u540d\u8bbf\u95ee\u7f51\u7ad9\uff0c\u5373\u4fbfIP\u53ef\u6b63\u5e38\u8bbf\u95ee\u3002\u7f51\u7edc\u7814\u7a76\u6570\u636e\u663e\u793a\uff0c\u8fd9\u7c7b\u95ee\u9898\u5341\u5206\u5e38\u89c1\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5e38\u89c1DNS\u95ee\u9898<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8bf4\u660e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>DNS\u7f13\u5b58\u672a\u66f4\u65b0<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u65e7\u89e3\u6790\u8bb0\u5f55\u4f1a\u963b\u788d\u65b0\u914d\u7f6e\u751f\u6548\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>TTL\u503c\u8bbe\u7f6e\u4e0d\u5f53<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>TTL\u8fc7\u957f\u4f1a\u5ef6\u7f13\u89e3\u6790\u8bb0\u5f55\u66f4\u65b0\u901f\u5ea6\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u89e3\u6790\u8bb0\u5f55\u914d\u7f6e\u9519\u8bef<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>IP\u586b\u5199\u9519\u8bef\u6216\u8bb0\u5f55\u5f02\u5e38\u5bfc\u81f4\u89e3\u6790\u5931\u8d25\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u57df\u540d\u6ce8\u518c\u6d41\u7a0b\u672a\u5b8c\u6210<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u672a\u5b8c\u6210\u6ce8\u518c\u7684\u57df\u540d\u65e0\u6cd5\u88ab\u6b63\u5e38\u89e3\u6790\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>DNS\u670d\u52a1\u5546\u6545\u969c<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u670d\u52a1\u5668\u5b95\u673a\u6216\u540c\u6b65\u5ef6\u8fdf\u5bfc\u81f4\u89e3\u6790\u5f02\u5e38\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5168\u7403\u540c\u6b65\u5ef6\u8fdf<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u89e3\u6790\u4fee\u6539\u9700\u4e00\u5b9a\u65f6\u95f4\u540c\u6b65\u81f3\u5168\u7403\u8282\u70b9\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7f51\u7edc\u6216\u672c\u5730\u73af\u5883\u95ee\u9898<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u672c\u5730\u914d\u7f6e\u6216\u7f13\u5b58\u4f1a\u963b\u788d\u57df\u540d\u8bbf\u95ee\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>DNS\u7f13\u5b58\u4e0e\u89e3\u6790\u751f\u6548<\/h3>\n<p>DNS\u4fee\u6539\u4e0d\u4f1a\u7acb\u5373\u751f\u6548\uff0c\u901a\u5e38\u9700\u8981\u7b49\u5f85\u89e3\u6790\u8bb0\u5f55\u5728\u5168\u7f51\u540c\u6b65\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e3a**DNS\u89e3\u6790\u751f\u6548**\uff0c\u8017\u65f6\u4e0d\u56fa\u5b9a\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8017\u65f6<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8bf4\u660e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6570\u5206\u949f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u90e8\u5206\u4fee\u6539\u53ef\u5feb\u901f\u751f\u6548\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>24~48\u5c0f\u65f6<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5b8c\u6574\u7684\u5168\u7403\u540c\u6b65\u6700\u957f\u9700\u4e24\u5929\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u82e5\u51fa\u73b0IP\u53ef\u8bbf\u95ee\u4f46\u57df\u540d\u65e0\u6cd5\u6253\u5f00\u7684\u60c5\u51b5\uff0c\u53ef\u7b49\u5f85\u89e3\u6790\u5b8c\u5168\u540c\u6b65\uff0c\u4e5f\u53ef\u5c1d\u8bd5\u6e05\u9664\u8bbe\u5907DNS\u7f13\u5b58\u52a0\u901f\u751f\u6548\u3002<\/p>\n<h2>\u57df\u540d\u4e0e\u670d\u52a1\u5668\u914d\u7f6e\u95ee\u9898<\/h2>\n<h3>\u57df\u540d\u8bbe\u7f6e\u9519\u8bef<\/h3>\n<p>\u914d\u7f6e\u9519\u8bef\u4f1a\u5bfc\u81f4\u57df\u540d\u65e0\u6cd5\u8bbf\u95ee\uff0c\u4f46IP\u4ecd\u53ef\u6b63\u5e38\u6253\u5f00\u3002\u591a\u6570\u95ee\u9898\u6e90\u4e8e\u89e3\u6790\u8bb0\u5f55\u9519\u8bef\u6216\u751f\u6548\u5ef6\u8fdf\uff0c\u5e38\u89c1\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u57df\u540d\u89e3\u6790\u9519\u8bef\u5e38\u89c1\u539f\u56e0<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8bf4\u660e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>A\u8bb0\u5f55\u914d\u7f6e\u9519\u8bef<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>IP\u5730\u5740\u586b\u5199\u9519\u8bef\u6216\u6307\u5411\u4e0d\u5b58\u5728\u7684\u670d\u52a1\u5668\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>CNAME\u914d\u7f6e\u51b2\u7a81<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u522b\u540d\u8bbe\u7f6e\u9519\u8bef\u4f1a\u9020\u6210\u89e3\u6790\u5faa\u73af\u6216\u5f02\u5e38\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>MX\u8bb0\u5f55\u7f3a\u5931<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u90ae\u4ef6\u89e3\u6790\u9519\u8bef\u4f1a\u5bfc\u81f4\u90ae\u7bb1\u529f\u80fd\u5f02\u5e38\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>TTL\u8bbe\u7f6e\u4e0d\u5f53<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>TTL\u8fc7\u957f\u66f4\u65b0\u6162\uff0c\u8fc7\u77ed\u5219\u89e3\u6790\u8bf7\u6c42\u8fc7\u4e8e\u9891\u7e41\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>DNS\u670d\u52a1\u5546\u5f02\u5e38<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>DNS\u670d\u52a1\u5546\u81ea\u8eab\u51fa\u73b0\u670d\u52a1\u6545\u969c\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u89e3\u6790\u672a\u751f\u6548<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u914d\u7f6e\u4fee\u6539\u9700\u7b49\u5f85\u66f4\u957f\u65f6\u95f4\u751f\u6548\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u533a\u57df\u4f20\u8f93\u9519\u8bef<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>DNS\u670d\u52a1\u5668\u95f4\u6570\u636e\u540c\u6b65\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Web\u670d\u52a1\u5668\u865a\u62df\u4e3b\u673a\u95ee\u9898<\/h3>\n<p>Web\u670d\u52a1\u5668\u901a\u8fc7\u865a\u62df\u4e3b\u673a\u5b9e\u73b0\u5355IP\u642d\u8f7d\u591a\u4e2a\u57df\u540d\uff0c\u865a\u62df\u4e3b\u673a\u914d\u7f6e\u9519\u8bef\u4f1a\u76f4\u63a5\u5bfc\u81f4\u5f02\u5e38\uff1aIP\u53ef\u8bbf\u95ee\uff0c\u57df\u540d\u65e0\u6cd5\u6253\u5f00\u3002\u4f8b\u5982\u672a\u5c06\u57df\u540d\u6dfb\u52a0\u81f3\u670d\u52a1\u5668\u914d\u7f6e\u6e05\u5355\uff0c\u670d\u52a1\u5668\u5c06\u65e0\u6cd5\u8bc6\u522b\u8bf7\u6c42\u3002\u5efa\u8bae\u68c0\u67e5\u670d\u52a1\u5668\u865a\u62df\u4e3b\u673a\u914d\u7f6e\u3002<\/p>\n<h3>\u57df\u540d\u8fc7\u671f\u6216\u88ab\u5c01\u7981<\/h3>\n<p>\u57df\u540d\u9700\u4fdd\u6301\u6709\u6548\u72b6\u6001\u624d\u53ef\u6b63\u5e38\u4f7f\u7528\uff0c\u82e5\u57df\u540d\u8fc7\u671f\u6216\u88ab\u5c01\u7981\uff0c\u6d4f\u89c8\u5668\u5c06\u65e0\u6cd5\u6253\u5f00\uff0c\u4ec5\u670d\u52a1\u5668IP\u53ef\u8bbf\u95ee\uff08\u56e0\u670d\u52a1\u5668\u6b63\u5e38\u8fd0\u884c\uff09\uff0c\u4f46\u57df\u540d\u5df2\u4e0d\u518d\u6307\u5411\u8be5\u670d\u52a1\u5668\u3002<br \/>\n\u53ef\u5728\u57df\u540d\u6ce8\u518c\u5546\u5e73\u53f0\u67e5\u8be2\u57df\u540d\u72b6\u6001\uff0c\u63d0\u524d\u7eed\u8d39\u907f\u514d\u7f51\u7ad9\u505c\u8fd0\uff1b\u82e5\u57df\u540d\u88ab\u5c01\u7981\uff0c\u9700\u8054\u7cfb\u670d\u52a1\u5546\u5904\u7406\u3002<\/p>\n<h2>\u7f51\u7edc\u4e0e\u9632\u706b\u5899\u9650\u5236<\/h2>\n<h3>\u9632\u706b\u5899\u4e0e\u8fd0\u8425\u5546\u5c4f\u853d<\/h3>\n<p>\u9632\u706b\u5899\u6216\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\uff08ISP\uff09\u53ef\u80fd\u5c4f\u853d\u57df\u540d\u8bbf\u95ee\uff0c\u539f\u56e0\u591a\u6837\u3002\u90e8\u5206\u9632\u706b\u5899\u4f1a\u901a\u8fc7\u89c4\u5219\u8bc6\u522b\u8bf7\u6c42\u4e2d\u7684\u57df\u540d\uff0c\u5c4f\u853d\u7279\u5b9a\u57df\u540d\u4ee5\u4fdd\u969c\u5b89\u5168\u6216\u9075\u5b88\u4f01\u4e1a\u7b56\u7565\uff1b\u8fd0\u8425\u5546\u4e5f\u4f1a\u4f9d\u636e\u5f53\u5730\u6cd5\u89c4\u5c4f\u853d\u8fdd\u89c4\u6216\u6709\u5bb3\u5185\u5bb9\u3002<br \/>\n\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5c31\u4f1a\u51fa\u73b0**IP\u53ef\u8bbf\u95ee\u3001\u57df\u540d\u65e0\u6cd5\u6253\u5f00**\u7684\u73b0\u8c61\uff0c\u56e0\u4e3a\u9632\u706b\u5899\u6216\u8fd0\u8425\u5546\u4ec5\u6821\u9a8c\u57df\u540d\uff0c\u672a\u62e6\u622aIP\u8bf7\u6c42\u3002<\/p>\n<h3>ICMP\u4e0eHTTP\u8bbf\u95ee\u7684\u533a\u522b<\/h3>\n<p>\u5f88\u591a\u4eba\u7528`ping`\u547d\u4ee4\u6d4b\u8bd5\u8fde\u901a\u6027\uff0c\u8be5\u547d\u4ee4\u901a\u8fc7**\u4e92\u8054\u7f51\u63a7\u5236\u6d88\u606f\u534f\u8bae\uff08ICMP\uff09** \u5411\u670d\u52a1\u5668\u53d1\u9001\u6570\u636e\u5305\uff0c\u6536\u5230\u56de\u590d\u4ec5\u8bf4\u660e\u8bbe\u5907\u53ef\u8fde\u901a\u670d\u52a1\u5668\uff0c\u4e0d\u4ee3\u8868\u6d4f\u89c8\u5668\u80fd\u6b63\u5e38\u6253\u5f00\u7f51\u7ad9\u3002<br \/>\n\u6d4f\u89c8\u5668\u4f7f\u7528HTTP\/HTTPS\u534f\u8bae\uff0c\u4e0eICMP\u539f\u7406\u4e0d\u540c\uff0c\u9632\u706b\u5899\u53ef\u5355\u72ec\u5c4f\u853dHTTP\/HTTPS\u6d41\u91cf\uff0c\u540c\u65f6\u653e\u884cICMP\u6570\u636e\u5305\u3002\u56e0\u6b64\u4f1a\u51fa\u73b0ping\u901a\u670d\u52a1\u5668\u3001\u7f51\u7ad9\u5374\u65e0\u6cd5\u52a0\u8f7d\u7684\u60c5\u51b5\u3002<\/p>\n<ul>\n<li>\n<p><strong>Ping\uff08ICMP\uff09\uff1a<\/strong>\u4ec5\u68c0\u6d4b\u670d\u52a1\u5668\u662f\u5426\u53ef\u8fde\u901a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6d4f\u89c8\u5668\uff08HTTP\/HTTPS\uff09\uff1a<\/strong>\u52a0\u8f7d\u7f51\u7ad9\u5b8c\u6574\u5185\u5bb9\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u57df\u540d\u4e0eIP\u8bbf\u95ee\u89c4\u5219\u5dee\u5f02<\/h3>\n<p>\u7f51\u7edc\u8bbe\u5907\u5bf9\u57fa\u4e8e\u57df\u540d\u548c\u57fa\u4e8eIP\u7684\u8bf7\u6c42\u6267\u884c\u4e0d\u540c\u89c4\u5219\uff0c\u6838\u5fc3\u533a\u522b\u5982\u4e0b\u8868\uff1a<\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 75px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7279\u6027<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u670d\u52a1\uff08\u57fa\u4e8eIP\uff09<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8def\u7531\uff08\u57fa\u4e8e\u57df\u540d\uff09<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>OSI\u5c42\u7ea7<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7b2c4\u5c42<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7b2c7\u5c42<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6807\u8bc6\u65b9\u5f0f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f7f\u7528IP\u5730\u5740\u4e0e\u7aef\u53e3<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f7f\u7528\u57df\u540d\u4e0e\u8def\u5f84<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6838\u5fc3\u529f\u80fd<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u62bd\u8c61\u5e94\u7528\u540e\u7aef\u670d\u52a1<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7ba1\u7406API\u5bf9\u8c61\u4e0e\u670d\u52a1\u805a\u5408<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u534f\u8bae\u652f\u6301<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u652f\u6301TCP\u3001UDP<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4ec5\u652f\u6301HTTP\u3001HTTPS\u3001HTTP2<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>IP\u590d\u7528<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5355\u670d\u52a1\u9700\u72ec\u7acbIP<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u591a\u57df\u540d\u53ef\u5171\u7528\u540c\u4e00IP<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6d41\u91cf\u8def\u7531<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f9d\u636eIP\u4e0e\u7aef\u53e3\u8def\u7531<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f9d\u636e\u57df\u540d\u4e0e\u8def\u5f84\u8f6c\u53d1\u8bf7\u6c42<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u57fa\u4e8e\u57df\u540d\u7684\u6d41\u91cf\u89c4\u5219\u5de5\u4f5c\u5728\u66f4\u9ad8\u7f51\u7edc\u5c42\u7ea7\uff0c\u901a\u8fc7\u57df\u540d\u8c03\u5ea6\u6570\u636e\uff1bIP\u89c4\u5219\u4ec5\u4f9d\u8d56\u5730\u5740\u548c\u7aef\u53e3\uff0c\u56e0\u6b64\u7f51\u7edc\u53ef\u5355\u72ec\u5c4f\u853d\u5176\u4e2d\u4e00\u79cd\u8bbf\u95ee\u65b9\u5f0f\u3002\u9047\u5230\u6b64\u7c7b\u95ee\u9898\uff0c\u9700\u540c\u65f6\u68c0\u67e5\u9632\u706b\u5899\u4e0e\u8def\u7531\u5668\u7684\u4e24\u7c7b\u89c4\u5219\u3002<\/p>\n<h2>IP\u53ef\u8bbf\u95ee\u65f6\u7684\u6545\u969c\u6392\u67e5<\/h2>\n<p>\u82e5\u51fa\u73b0**IP\u53ef\u8bbf\u95ee\u4f46\u57df\u540d\u65e0\u6cd5\u6253\u5f00**\u7684\u60c5\u51b5\uff0c\u53ef\u6309\u6b65\u9aa4\u9010\u6b65\u6392\u67e5\uff0c\u65e0\u9700\u4e13\u4e1a\u6280\u672f\u5373\u53ef\u64cd\u4f5c\uff0c\u501f\u52a9\u7b80\u6613\u5de5\u5177\u5c31\u80fd\u5b9a\u4f4d\u95ee\u9898\u3002<\/p>\n<h3>\u68c0\u67e5DNS\u89e3\u6790\u8bb0\u5f55<\/h3>\n<p>\u9996\u5148\u6838\u67e5DNS\u89e3\u6790\u8bb0\u5f55\uff0c\u786e\u8ba4\u57df\u540d\u6307\u5411\u6b63\u786e\u7684**IP\u5730\u5740**\uff0c\u53ef\u901a\u8fc7\u547d\u4ee4\u884c\u5de5\u5177\u6216\u5728\u7ebf\u5e73\u53f0\u6bd4\u5bf9\u7ed3\u679c\u3002<\/p>\n<ul>\n<li>\n<p>DNS\u8bb0\u5f55\u68c0\u6d4b\u53ef\u5224\u65ad\u662f\u5426\u5b58\u5728DNS\u6c61\u67d3\uff0c\u5bf9\u6bd4\u672c\u5730\u4e0e\u516c\u5171\u89e3\u6790\u670d\u52a1\u5668\u7ed3\u679c\u5373\u53ef\u8bc6\u522b\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528`nslookup`\u3001`dig`\u7b49\u5de5\u5177\u67e5\u8be2\u516c\u5171\u89e3\u6790\u670d\u52a1\u5668\uff0c\u5982\u8c37\u6b4c8.8.8.8\u3001Cloudflare 1.1.1.1\u3002<\/p>\n<\/li>\n<li>\n<p>\u82e5\u7ed3\u679c\u4e0d\u4e00\u81f4\uff0c\u8bf4\u660e\u5b58\u5728\u89e3\u6790\u7be1\u6539\u6216\u914d\u7f6e\u9519\u8bef\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u7ebf\u68c0\u6d4b\u5de5\u5177\u53ef\u4fbf\u6377\u6bd4\u5bf9\u7ed3\u679c\u3001\u5b9a\u4f4d\u6545\u969c\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>DNS\u8bca\u65ad\u63a8\u8350\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li>\n<p>\u4f7f\u7528`nslookup`\u6216`dig`\u67e5\u8be2\u672c\u5730\u8bbe\u5907\u7684DNS\u89e3\u6790\u7ed3\u679c\u3002<\/p>\n<\/li>\n<li>\n<p>\u5411\u591a\u4e2a\u516c\u5171\u89e3\u6790\u670d\u52a1\u5668\u53d1\u8d77\u67e5\u8be2\uff0c\u6bd4\u5bf9\u5dee\u5f02\u3002<\/p>\n<\/li>\n<li>\n<p>\u501f\u52a9\u5728\u7ebf\u5de5\u5177\u6bd4\u5bf9\u672c\u5730\u4e0e\u6743\u5a01\u89e3\u6790\u7ed3\u679c\u3002<\/p>\n<\/li>\n<\/ol>\n<h3>\u6e05\u9664DNS\u7f13\u5b58<\/h3>\n<p>\u8bbe\u5907\u4f1a\u7559\u5b58\u65e7DNS\u4fe1\u606f\uff0c\u7f13\u5b58\u8fc7\u671f\u4f1a\u5bfc\u81f4\u5373\u4fbf**IP\u53ef\u8bbf\u95ee**\uff0c\u57df\u540d\u4ecd\u65e0\u6cd5\u6253\u5f00\u3002\u6e05\u9664DNS\u7f13\u5b58\u53ef\u8ba9\u8bbe\u5907\u91cd\u65b0\u83b7\u53d6\u6700\u65b0\u89e3\u6790\u6570\u636e\u3002<\/p>\n<p><strong>DNS\u7f13\u5b58\u6e05\u9664\u65b9\u6cd5\uff1a<\/strong><\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u64cd\u4f5c\u7cfb\u7edf<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6e05\u9664DNS\u7f13\u5b58\u547d\u4ee4<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Windows<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>ipconfig \/flushdns<\/code><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Mac<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>sudo dscacheutil -flushcache<\/code><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>Mac\uff08\u5907\u7528\uff09<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>sudo killall -HUP mDNSResponder<\/code><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u6253\u5f00\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\uff0c\u8f93\u5165\u5bf9\u5e94\u7cfb\u7edf\u7684\u547d\u4ee4\uff0c\u5373\u53ef\u8ba9\u8bbe\u5907\u83b7\u53d6\u6700\u65b0DNS\u6570\u636e\u3002<\/p>\n<h3>\u6838\u67e5\u57df\u540d\u4e0e\u670d\u52a1\u5668\u914d\u7f6e<\/h3>\n<p>\u68c0\u67e5\u670d\u52a1\u5668\u914d\u7f6e\uff0c\u9519\u8bef\u914d\u7f6e\u4f1a\u5bfc\u81f4\u57df\u540d\u8bbf\u95ee\u5f02\u5e38\uff0c\u800c**IP\u53ef\u6b63\u5e38\u8bbf\u95ee**\u3002<\/p>\n<ul>\n<li>\n<p>\u786e\u4fdd\u89e3\u6790\u8bb0\u5f55\u6b63\u786e\uff0c\u6838\u67e5A\u8bb0\u5f55\u3001MX\u8bb0\u5f55\u6307\u5411\u65e0\u8bef\u3002<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u57df\u540d\u72b6\u6001\uff0c\u786e\u8ba4\u57df\u540d\u6709\u6548\u3001\u672a\u8fc7\u671f\u6216\u88ab\u5c01\u7981\u3002<\/p>\n<\/li>\n<li>\n<p>\u82e5\u5b58\u5728\u7f13\u5b58\u95ee\u9898\uff0c\u5237\u65b0\u672c\u5730\u89e3\u6790\u7f13\u5b58\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528`nslookup`\u68c0\u6d4bDNS\uff0c\u901a\u8fc7`curl ifconfig.me`\u67e5\u8be2\u670d\u52a1\u5668\u516c\u7f51**IP\u5730\u5740**\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u57df\u540d\u4e0e\u670d\u52a1\u5668\u6838\u67e5\u6e05\u5355\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p>\u786e\u8ba4\u57df\u540d\u5df2\u5b8c\u6210\u6ce8\u518c\u5e76\u6b63\u5e38\u7eed\u8d39\u3002<\/p>\n<\/li>\n<li>\n<p>\u6838\u5bf9\u89e3\u6790\u8bb0\u5f55\u51c6\u786e\u6027\u3002<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u670d\u52a1\u5668\u914d\u7f6e\uff0c\u5305\u542b\u865a\u62df\u4e3b\u673a\u8bbe\u7f6e\u3002<\/p>\n<\/li>\n<li>\n<p>\u786e\u8ba4\u57df\u540d\u5df2\u6dfb\u52a0\u81f3\u670d\u52a1\u5668\u865a\u62df\u4e3b\u673a\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u68c0\u67e5\u9632\u706b\u5899\u4e0e\u7f51\u7edc\u89c4\u5219<\/h3>\n<p>\u9632\u706b\u5899\u4e0e\u7f51\u7edc\u8bbe\u5907\u53ef\u80fd\u5c4f\u853d\u57df\u540d\u6d41\u91cf\uff0c\u5374\u653e\u884cIP\u8bf7\u6c42\uff0c\u9700\u68c0\u67e5\u9632\u706b\u5899\u4e0e\u8def\u7531\u5668\u914d\u7f6e\u3002<\/p>\n<ul>\n<li>\n<p>\u67e5\u770b\u662f\u5426\u5b58\u5728\u5c4f\u853d\u57df\u540d\u6216\u7279\u5b9aURL\u7684\u89c4\u5219\u3002<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u662f\u5426\u6709\u8fc7\u6ee4HTTP\/HTTPS\u6d41\u91cf\u7684\u89c4\u5219\u3002<\/p>\n<\/li>\n<li>\n<p>\u786e\u8ba4\u7f51\u7edc\u672a\u56e0\u7b56\u7565\u6216\u5b89\u5168\u539f\u56e0\u5c4f\u853d\u57df\u540d\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u7f51\u7edc\u95ee\u9898\u8bca\u65ad\u5de5\u5177\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528`nslookup`\u3001`dig`\u68c0\u6d4bDNS\u89e3\u6790\u3002<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u89e3\u6790\u8bb0\u5f55\u914d\u7f6e\u662f\u5426\u6b63\u786e\u3002<\/p>\n<\/li>\n<li>\n<p>\u6e05\u9664\u672c\u5730\u7f13\u5b58\u5220\u9664\u8fc7\u671f\u89e3\u6790\u4fe1\u606f\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u5feb\u901f\u6392\u67e5\u8868<\/strong><\/p>\n<div class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 75px\">\n<colgroup>\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<col style=\"min-width: 25px\">\n<\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6b65\u9aa4<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5de5\u5177\/\u547d\u4ee4<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7528\u9014<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u68c0\u67e5DNS\u8bb0\u5f55<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p><code>nslookup<\/code>\u3001<code>dig<\/code><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5b9a\u4f4dDNS\u9519\u8bef<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6e05\u9664DNS\u7f13\u5b58<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7cfb\u7edf\u4e13\u5c5e\u547d\u4ee4<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5220\u9664\u65e7DNS\u4fe1\u606f<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6838\u67e5\u57df\u540d\u72b6\u6001<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u57df\u540d\u6ce8\u518c\u5546\u540e\u53f0<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u786e\u8ba4\u57df\u540d\u6709\u6548<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u68c0\u67e5\u670d\u52a1\u5668\u914d\u7f6e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u865a\u62df\u4e3b\u673a\u914d\u7f6e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u786e\u8ba4\u57df\u540d\u5df2\u7ed1\u5b9a<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u68c0\u6d4b\u7f51\u7edc\u89c4\u5219<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u9632\u706b\u5899\/\u8def\u7531\u5668\u540e\u53f0<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u67e5\u627e\u57df\u540d\u5c4f\u853d\u89c4\u5219<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u53ef\u80fd\u4f1a\u7591\u60d1\uff0c\u4e3a\u4f55\u4f7f\u7528\u6570\u5b57\u5f62\u5f0f\u7684IP\u80fd\u8bbf\u95ee\u7f51\u7ad9\uff0c\u8f93\u5165\u57df\u540d\u5374\u65e0\u6cd5\u6253\u5f00\u3002\u8fd9\u4e2a\u95ee\u9898\u5e38\u5e38\u8ba9\u4eba\u56f0\u60d1\u3002\u5f88\u591a\u65f6\u5019IP\u53ef\u6b63\u5e38\u8bbf\u95ee\uff0c\u57df\u540d\u5374\u52a0\u8f7d\u5931\u8d25\uff0c\u539f\u56e0\u901a\u5e38\u6d89\u53caDNS\u9519\u8bef\u3001\u4e25\u683c\u7684\u9632\u706b\u5899\u89c4\u5219\u6216\u670d\u52a1\u5668\u914d\u7f6e\u9519\u8bef\u3002\u4f60\u4e0d\u5fc5\u675f\u624b\u65e0\u7b56\uff0c\u8fd9\u7c7b\u95ee\u9898\u7684\u5927\u591a\u6570\u89e3\u51b3\u65b9\u6848\u90fd\u7b80\u5355\u6613\u64cd\u4f5c\u3002 DNS\u95ee\u9898\u4e0eIP\u53ef\u8bbf\u95ee\u7684\u539f\u56e0 DNS\u89e3\u6790\u6d41\u7a0b \u5f53\u4f60\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\u7f51\u7ad9\u57df\u540d\u65f6\uff0c\u8bbe\u5907\u65e0\u6cd5\u76f4\u63a5\u83b7\u77e5\u5176IP\u5730\u5740\uff0c\u9700\u8981\u501f\u52a9**\u57df\u540d\u7cfb\u7edf\uff08DNS\uff09** \u5b8c\u6210\u89e3\u6790\u3002DNS\u5c31\u50cf\u4e92\u8054\u7f51\u7684\u7535\u8bdd\u7c3f\uff0c\u5e38\u89c4\u89e3\u6790\u6d41\u7a0b\u5982\u4e0b\uff1a \u4f60\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\u7f51\u5740\uff0c\u6d4f\u89c8\u5668\u5c06\u5176\u8f6c\u6362\u4e3a\u5b8c\u5168\u9650\u5b9a\u57df\u540d\uff08FQDN\uff09\u3002 \u6d4f\u89c8\u5668\u5411\u89e3\u6790\u670d\u52a1\u5668\u8bf7\u6c42\u67e5\u8be2\u8be5\u5b8c\u5168\u9650\u5b9a\u57df\u540d\u5bf9\u5e94\u7684IP\u5730\u5740\u3002 \u89e3\u6790\u670d\u52a1\u5668\u5411\u6839\u57df\u540d\u670d\u52a1\u5668\u67e5\u8be2\uff0c\u83b7\u53d6\u5bf9\u5e94\u9876\u7ea7\u57df\u540d\uff08TLD\uff09\u670d\u52a1\u5668\u7684\u5730\u5740\u3002 \u89e3\u6790\u670d\u52a1\u5668\u8fde\u63a5\u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668\uff0c\u83b7\u53d6\u6743\u5a01\u57df\u540d\u670d\u52a1\u5668\u5730\u5740\u3002 \u89e3\u6790\u670d\u52a1\u5668\u5411\u6743\u5a01\u57df\u540d\u670d\u52a1\u5668\u8bf7\u6c42\u7f51\u7ad9\u771f\u5b9eIP\u5730\u5740\u3002 \u89e3\u6790\u670d\u52a1\u5668\u5c06IP\u5730\u5740\u8fd4\u56de\u7ed9\u6d4f\u89c8\u5668\uff0c\u4f60\u5373\u53ef\u6b63\u5e38\u8bbf\u95ee\u7f51\u7ad9\u3002 \u53ea\u8981\u5176\u4e2d\u4efb\u610f\u4e00\u6b65\u5931\u8d25\uff0c\u5c31\u53ef\u80fd\u51fa\u73b0\u4ec5IP\u53ef\u8bbf\u95ee\u3001\u57df\u540d\u65e0\u6cd5\u6253\u5f00\u7684\u60c5\u51b5\u3002 \u5e38\u89c1DNS\u9519\u8bef DNS\u95ee\u9898\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u901a\u8fc7\u57df\u540d\u8bbf\u95ee\u7f51\u7ad9\uff0c\u5373\u4fbfIP\u53ef\u6b63\u5e38\u8bbf\u95ee\u3002\u7f51\u7edc\u7814\u7a76\u6570\u636e\u663e\u793a\uff0c\u8fd9\u7c7b\u95ee\u9898\u5341\u5206\u5e38\u89c1\uff1a \u5e38\u89c1DNS\u95ee\u9898 \u8bf4\u660e DNS\u7f13\u5b58\u672a\u66f4\u65b0 \u65e7\u89e3\u6790\u8bb0\u5f55\u4f1a\u963b\u788d\u65b0\u914d\u7f6e\u751f\u6548\u3002 TTL\u503c\u8bbe\u7f6e\u4e0d\u5f53 TTL\u8fc7\u957f\u4f1a\u5ef6\u7f13\u89e3\u6790\u8bb0\u5f55\u66f4\u65b0\u901f\u5ea6\u3002 \u89e3\u6790\u8bb0\u5f55\u914d\u7f6e\u9519\u8bef IP\u586b\u5199\u9519\u8bef\u6216\u8bb0\u5f55\u5f02\u5e38\u5bfc\u81f4\u89e3\u6790\u5931\u8d25\u3002 \u57df\u540d\u6ce8\u518c\u6d41\u7a0b\u672a\u5b8c\u6210 \u672a\u5b8c\u6210\u6ce8\u518c\u7684\u57df\u540d\u65e0\u6cd5\u88ab\u6b63\u5e38\u89e3\u6790\u3002 DNS\u670d\u52a1\u5546\u6545\u969c \u670d\u52a1\u5668\u5b95\u673a\u6216\u540c\u6b65\u5ef6\u8fdf\u5bfc\u81f4\u89e3\u6790\u5f02\u5e38\u3002 \u5168\u7403\u540c\u6b65\u5ef6\u8fdf \u89e3\u6790\u4fee\u6539\u9700\u4e00\u5b9a\u65f6\u95f4\u540c\u6b65\u81f3\u5168\u7403\u8282\u70b9\u3002 \u7f51\u7edc\u6216\u672c\u5730\u73af\u5883\u95ee\u9898 \u672c\u5730\u914d\u7f6e\u6216\u7f13\u5b58\u4f1a\u963b\u788d\u57df\u540d\u8bbf\u95ee\u3002 DNS\u7f13\u5b58\u4e0e\u89e3\u6790\u751f\u6548 DNS\u4fee\u6539\u4e0d\u4f1a\u7acb\u5373\u751f\u6548\uff0c\u901a\u5e38\u9700\u8981\u7b49\u5f85\u89e3\u6790\u8bb0\u5f55\u5728\u5168\u7f51\u540c\u6b65\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e3a**DNS\u89e3\u6790\u751f\u6548**\uff0c\u8017\u65f6\u4e0d\u56fa\u5b9a\uff1a \u8017\u65f6 \u8bf4\u660e \u6570\u5206\u949f \u90e8\u5206\u4fee\u6539\u53ef\u5feb\u901f\u751f\u6548\u3002 24~48\u5c0f\u65f6 \u5b8c\u6574\u7684\u5168\u7403\u540c\u6b65\u6700\u957f\u9700\u4e24\u5929\u3002 \u82e5\u51fa\u73b0IP\u53ef\u8bbf\u95ee\u4f46\u57df\u540d\u65e0\u6cd5\u6253\u5f00\u7684\u60c5\u51b5\uff0c\u53ef\u7b49\u5f85\u89e3\u6790\u5b8c\u5168\u540c\u6b65\uff0c\u4e5f\u53ef\u5c1d\u8bd5\u6e05\u9664\u8bbe\u5907DNS\u7f13\u5b58\u52a0\u901f\u751f\u6548\u3002 \u57df\u540d\u4e0e\u670d\u52a1\u5668\u914d\u7f6e\u95ee\u9898 \u57df\u540d\u8bbe\u7f6e\u9519\u8bef 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