<\/path> \n<\/svg> <\/p>\nDNS\uff08Domain Name System\u57df\u540d\u7cfb\u7edf\uff09\u57fa\u7840\u90e8\u5206<\/p>\n
\u7535\u8111\u8bbf\u95eeInternet\u5177\u5907\u7684\u8981\u7d20\uff1aIP\u3001\u7f51\u5173\u3001DNS
DNS\u529f\u80fd\uff1a\u57df\u540d\u89e3\u6790
\u5b9e\u8d28\u5185\u5bb9\uff1a\u5c06\u5b8c\u5168\u5408\u683c\u57df\u540d\uff08\u5168\u9650\u5b9a\u57df\u540d\uff09\u8f6c\u6362\u4e3aIP<\/p>\n
\u4ec0\u4e48\u662f\u5b8c\u5168\u5408\u683c\u57df\u540d\uff08\u5168\u9650\u5b9a\u57df\u540d\uff09\uff1f
\u5982\uff1a\u201cwww.baidu.com.\u201d\u4e3a\u5b8c\u5168\u5408\u683c\u57df\u540d\uff08\u5168\u9650\u5b9a\u57df\u540d\uff09
\u201cwww\u201d\u4e3a\u4e3b\u673a\u540d\uff1b\u201cbaidu.com.\u201d\u4e3a\u57df\u540d
\u4e3b\u673a\u540d+\u57df\u540d=\u5b8c\u5168\u5408\u683c\u57df\u540d\uff08\u5168\u9650\u5b9a\u57df\u540d\uff09<\/p>\n
DNS\u53d1\u5c55\u8fc7\u7a0b\uff1a\u901a\u8fc7IP\u4e0a\u7f51\u2192\u672c\u673ahosts\u6587\u4ef6\uff08Linux\u4e2d\u4e5f\u6709\uff09\u2192DNS\u670d\u52a1\u5668
\u6ce8\uff1ahosts\u6587\u4ef6\uff0c\u53ea\u5bf9\u5f53\u524d\u8ba1\u7b97\u673a\u751f\u6548\u3002\u5f0a\u7aef\uff1a\u4e3b\u673a\u540d\u79f0\u53ef\u80fd\u91cd\u590d\uff1b\u4e3b\u673a\u7ef4\u62a4\u56f0\u96be<\/p>\n
DNS\u5de5\u4f5c\u539f\u7406\uff1a
1\u3001\u5ba2\u6237\u673a\u63d0\u51fa\u57df\u540d\u89e3\u6790\u8bf7\u6c42\uff0c\u5e76\u5c06\u8be5\u8bf7\u6c42\u53d1\u9001\u7ed9\u672c\u5730\u7684\u57df\u540d\u670d\u52a1\u5668\u3002
2\u3001\u5f53\u672c\u5730\u7684\u57df\u540d\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u5c31\u5148\u67e5\u8be2\u672c\u5730\u7684\u7f13\u5b58\uff0c\u5982\u679c\u6709\u8be5\u7eaa\u5f55\u9879\uff0c\u5219\u672c\u5730\u7684\u57df\u540d\u670d\u52a1\u5668\u5c31\u76f4\u63a5\u628a\u67e5\u8be2\u7684\u7ed3\u679c\u8fd4\u56de\u3002
3\u3001\u5982\u679c\u672c\u5730\u7684\u7f13\u5b58\u4e2d\u6ca1\u6709\u8be5\u7eaa\u5f55\uff0c\u5219\u672c\u5730\u57df\u540d\u670d\u52a1\u5668\u5c31\u76f4\u63a5\u628a\u8bf7\u6c42\u53d1\u7ed9\u6839\u57df\u540d\u670d\u52a1\u5668\uff0c\u7136\u540e\u6839\u57df\u540d\u670d\u52a1\u5668\u518d\u8fd4\u56de\u7ed9\u672c\u5730\u57df\u540d\u670d\u52a1\u5668\u4e00\u4e2a\u6240\u67e5\u8be2\u57df(\u6839\u7684\u5b50\u57df) \u7684\u4e3b\u57df\u540d\u670d\u52a1\u5668\u7684\u5730\u5740\u3002
4\u3001\u672c\u5730\u670d\u52a1\u5668\u518d\u5411\u4e0a\u4e00\u6b65\u8fd4\u56de\u7684\u57df\u540d\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u7136\u540e\u63a5\u53d7\u8bf7\u6c42\u7684\u670d\u52a1\u5668\u67e5\u8be2\u81ea\u5df1\u7684\u7f13\u5b58\uff0c\u5982\u679c\u6ca1\u6709\u8be5\u7eaa\u5f55\uff0c\u5219\u8fd4\u56de\u76f8\u5173\u7684\u4e0b\u7ea7\u7684\u57df\u540d\u670d\u52a1\u5668\u7684\u5730\u5740\u3002
5\u3001\u91cd\u590d\u7b2c\u56db\u6b65\uff0c\u76f4\u5230\u627e\u5230\u6b63\u786e\u7684\u7eaa\u5f55\u3002
6\u3001\u672c\u5730\u57df\u540d\u670d\u52a1\u5668\u628a\u8fd4\u56de\u7684\u7ed3\u679c\u4fdd\u5b58\u5230\u7f13\u5b58\uff0c\u4ee5\u5907\u4e0b\u4e00\u6b21\u4f7f\u7528\uff0c\u540c\u65f6\u8fd8\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u673a\u3002<\/p>\n
DNS\u670d\u52a1\u5668\u4e3a\u5206\u5e03\u5f0f\uff1b\u5177\u6709\u5c42\u6b21\u6027
\u5206\u5e03\u5f0f
\u5c42\u6b21\u6027\uff1a\u5c42\u5c42\u5bfb\u627e\uff1a\u6839\u2192\u9876\u7ea7\u57df\u540d\u2192\u4e8c\u7ea7\u57df\u540d\u2192\u4e3b\u673a\u540d<\/p>\n
www.baidu.com.\uff08\u4ece\u6839\u5f00\u59cb\u627e\uff09\uff08\u4ece\u53f3\u5f80\u5de6\uff0c\u7ea7\u6570\u9012\u51cf\uff09
\u672b\u5c3e\u7684\u201c.\u201d\u662f\u6307\u6839\u670d\u52a1\u5668\uff08\u5168\u740313\u53f0DNS\u6839\u670d\u52a1\u5668\uff09\u3002NDS\u670d\u52a1\u5668\u53ea\u5b58\u9876\u7ea7\u57df\u540d
\u201c.com\u201d\u662f\u9876\u7ea7\u57df\u540d
\u201c.baidu\u201d\u4e8c\u7ea7\u57df\u540d
\u201cwww\u201d\u4e3b\u673a\u540d
DNS\u670d\u52a1\u5668\u7684\u5206\u7c7b:
1\u3001\u4e3b\u8981\u540d\u79f0\u670d\u52a1\u5668\uff1a
a\u3001\u5b58\u653e\u8be5\u533a\u57df\u4e2d\u76f8\u5173\u8bbe\u7f6e\u7684DNS\u670d\u52a1\u5668
b\u3001\u5176\u5b58\u653e\u7684\u662f\u533a\u57df\u6587\u4ef6\u7684\u6b63\u672c\u6570\u636e
2\u3001\u8f85\u52a9\u540d\u79f0\u670d\u52a1\u5668\uff1a
a\u3001\u4ece\u5176\u5b83\u670d\u52a1\u5668\u4e2d\u590d\u5236\u6570\u636e
b\u3001\u6570\u636e\u4e3a\u526f\u672c\u65e0\u6cd5\u4fee\u6539
3\u3001\u4e3b\u63a7\u540d\u79f0\u670d\u52a1\u5668
a\u3001\u63d0\u4f9b\u8d8b\u4e8e\u6570\u636e\u590d\u5236\u7684DNS\u670d\u52a1\u5668
4\u3001Cache-Only\u540d\u79f0\u670d\u52a1\u5668
a\u3001\u5c06\u67e5\u8be2\u5230\u7684\u6570\u636e\u4fdd\u5b58\u5728\u9ad8\u901f\u7f13\u5b58\u4e2d
\uff08\u6bcf\u6761\u4fe1\u606f\u6709\u4e00\u4e2a\u5b58\u50a8\u65f6\u95f4\uff09<\/p>\n
DNS\u67e5\u8be2\u8fc7\u7a0b\uff1a
\u6ce8\uff1a\u57df\u540d\u89e3\u6790\u914d\u7f6e\u5b8c\u6210\u4e0d\u4e00\u5b9a\u80fdping\u901a\uff0c\u5b83\u4eec\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u670d\u52a1<\/p>\n
DNS\u67e5\u8be2\u65b9\u5f0f
\u4ece\u67e5\u8be2\u65b9\u5f0f\u5206\u7c7b\uff1a\u9012\u5f52\u67e5\u8be2\uff08\u65e5\u5e38\u7528\u5230\u6700\u591a\uff09\u3001\u8fed\u4ee3\u67e5\u8be2\uff08\u8e22\u76ae\u7403\u67e5\u8be2\uff09
\u9012\u5f52\u67e5\u8be2\uff1a\u5ba2\u6237\u7aef\u5f97\u5230\u7ed3\u679c\u53ea\u80fd\u662f\u6210\u679c\u6216\u5931\u8d25
\u8fed\u4ee3\u67e5\u8be2\uff1aDNS\u670d\u52a1\u5668\u5982\u6709\u5ba2\u6237\u673a\u8bf7\u6c42\u6570\u636e\uff0c\u5219\u8fd4\u56de\u6b63\u786e\u5730\u5740\uff1b\u82e5\u65e0\u6570\u636e\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u6307\u9488<\/p>\n
\u4ece\u67e5\u8be2\u5185\u5bb9\u5206\u7c7b\uff1a\u6b63\u5411\u67e5\u8be2\u3001\u53cd\u5411\u67e5\u8be2
\u6b63\u5411\u67e5\u8be2\uff1a\u7531\u57df\u540d\u67e5IP
\u53cd\u5411\u67e5\u8be2\uff1a\u7531IP\u67e5\u57df\u540d<\/p>\n
\u63d0\u4f9bDNS\u5fc5\u8981\u6761\u4ef6\uff1a\u6709\u56fa\u5b9a\u7684IP\u3001\u5b89\u88c5\u5e76\u542f\u52a8DNS\u670d\u52a1\u3001\u6709\u533a\u57df\u6587\u4ef6\uff0c\u914d\u7f6e\u8f6c\u53d1\u5668\uff08\u505a\u7f13\u5b58DNS\uff09\uff0c\u6216\u8005\u914d\u7f6e\u6839\u63d0\u793a
\u663e\u793a\u201c\u975e\u6743\u5a01\u56de\u7b54\u201d\u662f\u56e0\u4e3a\u8be5IP\u662f\u901a\u8fc7\u7f13\u5b58DNS\u670d\u52a1\u5668\u8fdb\u884c\u57df\u540d\u89e3\u6790\u3002<\/p>\n
Windows server 2008 r2\u4e2dDNS\u670d\u52a1\u5b89\u88c5\u53ca\u4ecb\u7ecd
\u4e00\u3001DNS\u5b89\u88c5\u53ca\u65b0\u5efa\u4e3b\u673a
1\u3001 \u5728\u5b9e\u9a8c\u73af\u5883\u4e0b\u5148\u5173\u95ed\u9632\u706b\u5899
2\u3001 \u624b\u52a8\u66f4\u6539DNS\u670d\u52a1\u5668\u7684IP\uff1a\u201c\u6253\u5f00\u7f51\u7edc\u548c\u5171\u4eab\u4e2d\u5fc3\u201d\u2192\u201c\u66f4\u6539\u9002\u914d\u5668\u8bbe\u7f6e\u201d\u2192\u627e\u5230\u76f8\u5e94\u7f51\u5361\uff0c\u53f3\u51fb\u2192\u201c\u5c5e\u6027\u201d\u2192\u201cInternet\u534f\u8bae\u7248\u672c4\uff08TCP\/IPv4\uff09\u201d\u2192\u201c\u5c5e\u6027\u201d\uff0c\u5728\u5176\u4e2d\u66f4\u6539IP\u53ca\u9996\u9009DNS\uff0cDNS\u670d\u52a1\u5668\u7684IP\u53ef\u4ee5\u586b127.0.0.1
3\u3001 \u201c\u670d\u52a1\u5668\u7ba1\u7406\u5668\u201d\u2192\u201c\u89d2\u8272\u201d\u2192\u201c\u6dfb\u52a0\u89d2\u8272\u201d
4\u3001 \u5728\u8fd9\u4e00\u6b65\u9009\u62e9\u201cDNS\u670d\u52a1\u5668\u201d\uff0c\u5176\u5b83\u6b65\u9aa4\u9ed8\u8ba4\u201c\u4e0b\u4e00\u6b65\u201d\uff0c\u7136\u540e\u70b9\u51fb\u201c\u5b89\u88c5\u201d\u5c31\u597d
5\u3001 \u5b89\u88c5\u5b8c\u6210\u540e\u6211\u4eec\u4f1a\u770b\u5230\u201c\u5f00\u59cb\u201d\u83dc\u5355\u4e2d\u591a\u4e86\u4e00\u4e2a\u201cDNS\u201d\u7684\u9009\u9879\uff0c\u6211\u4eec\u6253\u5f00\u5b83\u8fdb\u884c\u914d\u7f6e
6\u3001 \u5728\u8fd9\u91cc\u6211\u4eec\u5148\u8fdb\u884c\u6b63\u5411\u67e5\u627e\u533a\u57df\u7684\u521b\u5efa
7\u3001 \u53f3\u51fb\u201c\u6b63\u5411\u67e5\u627e\u533a\u57df\u201d\u2192\u201c\u65b0\u5efa\u533a\u57df\u201d\uff0c\u8fd9\u91cc\u6839\u636e\u9700\u6c42\u9009\u62e9
8\u3001 \u8fd9\u91cc\u8f93\u5165\u533a\u57df\u540d\u79f0\uff08\u6ce8\uff1a\u5982www.baidu.com\u7684\u533a\u57df\u540d\u79f0\u662fbaidu.com\uff09
9\u3001 \u4ee5\u4e0b\u6b65\u9aa4\u6ca1\u6709\u7279\u6b8a\u9700\u6c42\u53ef\u4ee5\u9ed8\u8ba4\u4e0b\u4e00\u6b65
10\u3001\u5230\u8fd9\u6211\u4eec\u5c31\u521b\u5efa\u5b8c\u6210\u4e86
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\u8d77\u59cb\u6388\u6743\u673a\u6784\uff08SOA\uff09\uff1a\u653e\u5728\u516c\u7f51\u4e0a\u662f\uff0c\u53bb\u201c.com\u201d\u6ce8\u518c\uff0c\u8d77\u59cb\u6388\u6743\u673a\u6784\u5c31\u662f\u544a\u8bc9\u201c\u3002com\u201d\u6ce8\u518c\u4fe1\u606f\uff0cwsnd.com\u8fd9\u4e2a\u57df\u540d\u7531\u8fd9\u53f0\u670d\u52a1\u5668\u521b\u5efa
\u540d\u79f0\u670d\u52a1\u5668\uff08NS\uff09\uff1a\u771f\u6b63\u7528\u4e8e\u89e3\u6790<\/p>\n
\u4e8c\u3001\u65b0\u5efa\u4e3b\u673a
1\u3001\u5728\u5f53\u524d\u57df\u4e2d\u70b9\u51fb\u53f3\u952e\u2192\u201c\u65b0\u5efa\u4e3b\u673a\uff08A\u6216AAAA\uff09\u201d
2\u3001\u4e3b\u673a\u540d\u4ece\u4f20\u7edf\u610f\u4e49\u4e0a\u8bb2\uff0c\u521b\u5efa\u4e3b\u673a\u540d\u4e3a\u201cwww\u201d\uff0cIP\u5730\u5740\u53ef\u4ee5\u4efb\u610f\u6307\u5b9a\uff08\u539f\u5219\u4e0a\u586b\u5199\u63d0\u4f9b\u4e07\u7ef4\u7f51\u7684\u4e3b\u673aIP\u3002\u5728\u8fd9\u91cc\u6211\u6307\u5b9aIP\u4e3a\u672c\u673a\uff09\uff0c\u7136\u540e\u201c\u6dfb\u52a0\u4e3b\u673a\u201d\u2192\u201c\u5b8c\u6210\u201d\u5373\u53ef\u521b\u5efa\u76f8\u5e94\u7684\u89e3\u6790\u6587\u4ef6
3\u3001\u6d4b\u8bd5
1\uff09\u6211\u4eec\u7528\u7269\u7406\u673a\u6765\u6d4b\u8bd5\u4e00\u4e0b\uff1a\u5148\u5c06\u6211\u4eec\u7684DNS\u6539\u4e3a\u865a\u62df\u673aIP
2\uff09\u7136\u540e\u7528\u7269\u7406\u673aping\u6211\u4eec\u7684\u865a\u62df\u673a\uff1a192.168.8.28\uff0c\u53ef\u4ee5ping\u901a
3\uff09\u76f4\u63a5nslookup\u4ee5\u4e0b\u6211\u4eec\u7684\u57df\u540d\uff0c\u53d1\u73b0\u53ef\u4ee5\u89e3\u6790\u51fa\u6765\uff0c\u8bc1\u660e\u5b9e\u9a8c\u6210\u529f
4\u3001\u5927\u5bb6\u53d1\u73b0\uff0c\u6211\u4eecnslookup\u767e\u5ea6\u7684\u65f6\u5019\uff0c\u5b83\u4f1a\u51fa\u73b0\u201c\u540d\u79f0\uff1awww.a.shifen.com\u201d\u548c\u4e24\u4e2a\u5730\u5740
\u8fd9\u4e2a\u540d\u79f0\u662f\u767e\u5ea6\u7684\u771f\u540d\uff0c\u6211\u4eec\u73b0\u5728\u4f7f\u7528\u7684www.baidu.com\u662f\u5b83\u7684\u522b\u540d
\u6dfb\u52a0\u4e24\u6761\u4e3b\u673a\u8bb0\u5f55\uff0c\u5206\u522b\u5bf9\u5e94\u4e24\u4e2aIP\u5730\u5740\uff08\u57fa\u4e8eDNS\u7684\u8d1f\u8f7d\u5747\u8861\uff09\u3002<\/p>\n
\u4e8c\u3001\u65b0\u5efa\u522b\u540d\uff08\u8fd9\u91cc\u6211\u65b0\u5efa\u4e86\u4e3b\u673a\uff1a\u201cjzd\u201d\uff0c\u6211\u4eec\u5bf9\u5b83\u505a\u65b0\u5efa\u522b\u540d\uff09
1\u3001\u5728\u5f53\u524d\u57df\u4e2d\u70b9\u51fb\u53f3\u952e\u2192\u201c\u65b0\u5efa\u522b\u540d\uff08CNAME\uff09\u201d
2\u3001\u6ca1\u5565\u8bf4\u7684\uff0c\u8f93\u5165\u522b\u540d\uff0c\u7136\u540e\u5728\u76f8\u5e94\u533a\u57df\u627e\u5230\u8981\u521b\u5efa\u522b\u540d\u7684\u4e3b\u673a\uff08\u5982\u56fe\uff09
3\u3001\u521b\u5efa\u5b8c\u6210
4\u3001\u6d4b\u8bd5
1\uff09\u56e0\u4e3a\u521a\u624d\u6211\u4eec\u6539\u8fc7DNS\u5730\u5740\u4e86\uff0c\u5728\u8fd9\u91cc\u6211\u4e0d\u518d\u505a\u4fee\u6539
2\uff09\u8fdb\u5165nslookup\uff0c\u5148\u89e3\u6790\u4e00\u4e0bjzd.wsnd.com
3\uff09\u7136\u540e\u89e3\u6790\u4e00\u4e0bqishi.wsnd.com
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