\u539f\u7406\uff1a\u5982\u679c\u53ef\u4ee5\u5192\u5145\u57df\u540d\u670d\u52a1\u5668\uff0c\u7136\u540e\u628a\u67e5\u8be2\u7684IP\u5730\u5740\u8bbe\u4e3a\u653b\u51fb\u8005\u7684IP\u5730\u5740\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u7528\u6237\u4e0a\u7f51\u5c31\u53ea\u80fd\u770b\u5230\u653b\u51fb\u8005\u7684\u4e3b\u9875\uff0c\u800c\u4e0d\u662f\u7528\u6237\u60f3\u8981\u53d6\u5f97\u7684\u7f51\u7ad9\u7684\u4e3b\u9875\u4e86\uff0c\u8fd9\u5c31\u662fDNS\u6b3a\u9a97\u7684\u57fa\u672c\u539f\u7406\u3002DNS\u6b3a\u9a97\u5176\u5b9e\u5e76\u4e0d\u662f\u771f\u7684\u201c\u9ed1\u6389\u201d\u4e86\u5bf9\u65b9\u7684\u7f51\u7ad9\uff0c\u800c\u662f\u5192\u540d\u9876\u66ff\u3001\u62db\u6447\u649e\u9a97\u7f62\u4e86\u3002<\/p>\n
\uff08<\/p>\n
\u5c31\u662f\u6076\u610f\u7a0b\u5e8f\u4fee\u6539\u4f60\u7535\u8111\u4e0aDNS\u7f13\u5b58\u4e2d\u7684\u5185\u5bb9\uff0c\u4e00\u662f\u8ba9\u4f60\u4e0d\u80fd\u6b63\u5e38\u4e0a\u7f51\uff0c\u6bd4\u5982\u628awww.sina.com.cn\u7684IP\u5730\u5740\u4fee\u6539\u4e3a127.0.0.1\uff0c\u8fd9\u6837\u65e0\u8bba\u5982\u4f55\u4e5f\u4e0d\u80fd\u627e\u5230\u65b0\u6d6a\u7f51\u4e86\uff0c\u4e8c\u662f\u5c06\u67d0\u4e9b\u6076\u610fIP\u5730\u5740\u653e\u8fdbDNS\u7f13\u5b58\uff0c\u6bd4\u5982\u628awww.sina.com.cn\u5bf9\u5e94\u7684IP\u5730\u5740\u4fee\u6539\u4e3a\u6076\u610f\u7f51\u7ad9\u5730\u5740\uff0c\u5f53\u4f60\u5728\u5730\u5740\u680f\u8f93\u5165www.sina.com.cn\u7684\u65f6\u5019\uff0c\u8bbf\u95ee\u7684\u5374\u662f\u6076\u610f\u7f51\u7ad9\u3002\u7531\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u5728\u8fdb\u884cDNS\u89e3\u6790\u7684\u65f6\u5019\u9996\u5148\u67e5\u8be2DNS\u7f13\u5b58\uff0c\u5982\u679c\u5728\u7f13\u5b58\u4e2d\u80fd\u67e5\u5230\uff0c\u5c31\u4e0d\u4f1a\u518d\u627eDNS\u670d\u52a1\u5668\u4e86\u3002\u8fd9\u6837\u4e00\u65e6dns\u7f13\u5b58\u88ab\u4fee\u6539\uff0c\u4f60\u53bb\u4fee\u6539DNS\u670d\u52a1\u5668\u4e4b\u7c7b\u7684\u7f51\u7edc\u53c2\u6570\u4e5f\u662f\u65e0\u6548\u7684\u3002
\n1.\u7528IPCONFIG\/displaydns\u547d\u4ee4\u680f\u67e5\u770b\u5f53\u524ddns\u7f13\u5b58\u91cc\u7684\u5185\u5bb9\u3002 \uff08\u53ef\u4ee5\u67e5\u770b\uff09
\n2.\u7528ipconfig \/flushdns\u547d\u4ee4\u5237\u65b0dns\u7f13\u5b58\u4e2d\u7684\u5185\u5bb9\u3002 \uff08\u53ef\u4ee5\u4f7f\u7528\uff09
\n3.\u82e5\u8981\u9632\u6b62dns\u7f13\u5b58\u653b\u51fb\uff0c\u5e94\u7981\u7528dns\u7f13\u5b58\uff0c\u65b9\u6cd5\uff1a
\n\u7981\u7528\u5ba2\u6237\u7aef DNS \u7f13\u5b58
\n1. \u542f\u52a8\u6ce8\u518c\u8868\u7f16\u8f91\u5668 (Regedit.exe)\u3002
\n2. \u5728\u4ee5\u4e0b\u6ce8\u518c\u8868\u9879\u4e2d\u627e\u5230 MaxCacheEntryTtlLimit \u503c\uff1a \uff08\u7ecf\u8bd5\u9a8c\uff1a\u6211\u7684\u7535\u8111\u4e2d\u65e0\u6b64\u503c\uff09
\nHKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\Dnscache\\Parameters
\n3. \u5728\u7f16\u8f91\u83dc\u5355\u4e0a\uff0c\u5355\u51fb\u4fee\u6539\u3002\u952e\u5165 1\uff0c\u7136\u540e\u5355\u51fb\u786e\u5b9a\u3002
\n4. \u9000\u51fa\u6ce8\u518c\u8868\u7f16\u8f91\u5668\u3002<\/p>\n
\u4ee5\u4e0b\u4e3a\u767e\u5ea6\u767e\u79d1\u7684\u89e3\u91ca\uff1a
\n\u5b9a\u4e49\uff1a DNS\u6b3a\u9a97\u5c31\u662f\u653b\u51fb\u8005\u5192\u5145\u57df\u540d\u670d\u52a1\u5668\u7684\u4e00\u79cd\u6b3a\u9a97\u884c\u4e3a\u3002<\/p>\n
\uff09<\/p>\n
\u73b0\u5728\u7684Internet\u4e0a\u5b58\u5728\u7684DNS\u670d\u52a1\u5668\u6709\u7edd\u5927\u591a\u6570\u90fd\u662f\u7528bind\u6765\u67b6\u8bbe\u7684,\u4f7f\u7528\u7684bind\u7248\u672c\u4e3b\u8981\u4e3abind 4.9.5+P1\u4ee5\u524d\u7248\u672c\u548cbind 8.2.2-P5\u4ee5\u524d\u7248\u672c.\u8fd9\u4e9bbind\u6709\u4e2a\u5171\u540c\u7684\u7279\u70b9,\u5c31\u662fBIND\u4f1a\u7f13\u5b58(Cache)\u6240\u6709\u5df2\u7ecf\u67e5\u8be2\u8fc7\u7684\u7ed3\u679c,\u8fd9\u4e2a\u95ee\u9898\u5c31\u5f15\u8d77\u4e86\u4e0b\u9762\u7684\u51e0\u4e2a\u95ee\u9898\u7684\u5b58\u5728.
\n1>.DNS\u6b3a\u9a97
\n\u5728DNS\u7684\u7f13\u5b58\u8fd8\u6ca1\u6709\u8fc7\u671f\u4e4b\u524d,\u5982\u679c\u5728DNS\u7684\u7f13\u5b58\u4e2d\u5df2\u7ecf\u5b58\u5728\u7684\u8bb0\u5f55,\u4e00\u65e6\u6709\u5ba2\u6237\u67e5\u8be2,DNS\u670d\u52a1\u5668\u5c06\u4f1a\u76f4\u63a5\u8fd4\u56de\u7f13\u5b58\u4e2d\u7684\u8bb0\u5f55.
\n\u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50:
\n\u4e00\u53f0\u8fd0\u884c\u7740unix\u7684Internet\u4e3b\u673a,\u5e76\u4e14\u63d0\u4f9brlogin\u670d\u52a1,\u5b83\u7684IP\u5730\u5740\u4e3a123.45.67.89,\u5b83\u4f7f\u7528\u7684DNS\u670d\u52a1\u5668(\u5373\/etc\/resolv.conf\u4e2d\u6307\u5411\u7684DNS\u670d\u52a1\u5668)\u7684IP\u5730\u5740\u4e3a98.76.54.32,\u67d0\u4e2a\u5ba2\u6237\u7aef(IP\u5730\u5740\u4e3a38.222.74.2)\u8bd5\u56fe\u8fde\u63a5\u5230unix\u4e3b\u673a\u7684rlogin\u7aef\u53e3,\u5047\u8bbeunix\u4e3b\u673a\u7684\/etc\/hosts.equiv\u6587\u4ef6\u4e2d\u4f7f\u7528\u7684\u662fdns\u540d\u79f0\u6765\u5141\u8bb8\u76ee\u6807\u4e3b\u673a\u7684\u8bbf\u95ee,\u90a3\u4e48unix\u4e3b\u673a\u4f1a\u5411IP\u4e3a98.76.54.32\u7684DNS\u670d\u52a1\u5668\u53d1\u51fa\u4e00\u4e2aPTR\u8bb0\u5f55\u7684\u67e5\u8be2:
\n123.45.67.89 -> 98.76.54.32 [Query]
\nNQY: 1 NAN: 0 NNS: 0 NAD: 0
\nQY: 2.74.222.38.in-addr.arpa PTR
\nIP\u4e3a98.76.54.32\u7684DNS\u670d\u52a1\u5668\u4e2d\u6ca1\u6709\u8fd9\u4e2a\u53cd\u5411\u67e5\u8be2\u57df\u7684\u4fe1\u606f,\u7ecf\u8fc7\u4e00\u756a\u67e5\u8be2,\u8fd9\u4e2aDNS\u670d\u52a1\u5668\u627e\u523038.222.74.2\u548c38.222.74.10\u4e3a74.222.38.in-addr.arpa.\u7684\u6743\u5a01DNS\u670d\u52a1\u5668,\u6240\u4ee5\u5b83\u4f1a\u541138.222.74.2\u53d1\u51faPTR\u67e5\u8be2:<\/p>\n
98.76.54.32 -> 38.222.74.2 [Query]
\nNQY: 1 NAN: 0 NNS: 0 NAD: 0
\nQY: 2.74.222.38.in-addr.arpa PTR
\n\u8bf7\u6ce8\u610f,38.222.74.2\u662f\u6211\u4eec\u7684\u5ba2\u6237\u7aefIP,\u4e5f\u5c31\u662f\u8bf4\u8fd9\u53f0\u673a\u5b50\u662f\u5b8c\u5168\u638c\u63e1\u5728\u6211\u4eec\u624b\u4e2d\u7684.\u6211\u4eec\u53ef\u4ee5\u66f4\u6539\u5b83\u7684DNS\u8bb0\u5f55,\u8ba9\u5b83\u8fd4\u56de\u6211\u4eec\u6240\u9700\u8981\u7684\u7ed3\u679c:<\/p>\n
38.222.74.2 -> 98.76.54.32 [Answer]
\nNQY: 1 NAN: 2 NNS: 2 NAD: 2
\nQY: 2.74.222.38.in-addr.arpa PTR
\nAN: 2.74.222.38.in-addr.arpa PTR trusted.host.com
\nAN: trusted.host.com A 38.222.74.2
\nNS: 74.222.38.in-addr.arpa NS ns.sventech.com
\nNS: 74.222.38.in-addr.arpa NS ns1.sventech.com
\nAD: ns.sventech.com A 38.222.74.2
\nAD: ns1.sventech.com A 38.222.74.10
\n\u5f5398.76.54.32\u7684DNS\u670d\u52a1\u5668\u6536\u5230\u8fd9\u4e2a\u5e94\u7b54\u540e,\u4f1a\u628a\u7ed3\u679c\u8f6c\u53d1\u7ed9123.45.67.98,\u5c31\u662f\u90a3\u53f0\u6709rlogin\u670d\u52a1\u7684unix\u4e3b\u673a(\u4e5f\u662f\u6211\u4eec\u7684\u76ee\u6807 \ud83d\ude42 ),\u5e76\u4e1498.76.54.32\u8fd9\u53f0DNS\u670d\u52a1\u5668\u4f1a\u628a\u8fd9\u6b21\u7684\u67e5\u8be2\u7ed3\u679c\u7f13\u5b58\u8d77\u6765.<\/p>\n
\u8fd9\u65f6unix\u4e3b\u673a\u5c31\u8ba4\u4e3aIP\u5730\u5740\u4e3a38.222.74.2\u7684\u4e3b\u673a\u540d\u4e3atrusted.host.com,\u7136\u540eunix\u4e3b\u673a\u67e5\u8be2\u672c\u5730\u7684\/etc\/hosts.equiv\u6587\u4ef6,\u770b\u8fd9\u53f0\u4e3b\u673a\u662f\u5426\u88ab\u5141\u8bb8\u4f7f\u7528rlogin\u670d\u52a1,\u5f88\u663e\u7136,\u6211\u4eec\u7684\u6b3a\u9a97\u8fbe\u5230\u4e86.
\n\u5728unix\u7684\u73af\u5883\u4e2d,\u6709\u53e6\u5916\u4e00\u79cd\u6280\u672f\u6765\u9632\u6b62\u8fd9\u79cd\u6b3a\u9a97\u7684\u53d1\u751f,\u5c31\u662f\u67e5\u8be2PTR\u8bb0\u5f55\u540e,\u4e5f\u67e5\u8be2PTR\u8fd4\u56de\u7684\u4e3b\u673a\u540d\u7684A\u8bb0\u5f55,\u7136\u540e\u6bd4\u8f83\u4e24\u4e2aIP\u5730\u5740\u662f\u5426\u76f8\u540c:
\n123.45.67.89 -> 98.76.54.32 [Query]
\nNQY: 1 NAN: 0 NNS: 0 NAD: 0
\nQY: trusted.host.com A
\n\u5f88\u4e0d\u5e78,\u572898.76.54.32\u7684DNS\u670d\u52a1\u5668\u4e0d\u4f1a\u53bb\u67e5\u8be2\u8fd9\u4e2a\u8bb0\u5f55,\u800c\u4f1a\u76f4\u63a5\u8fd4\u56de\u5728\u67e5\u8be22.74.222.38.in-addr.arpa\u65f6\u5f97\u5230\u7684\u5e76\u4e14\u5b58\u5728\u7f13\u5b58\u4e2d\u7684\u4fe1\u606f:
\n98.76.54.32 -> 123.45.67.89 [Query]
\nNQY: 1 NAN: 1 NNS: 2 NAD: 2
\nQY: trusted.host.com A
\nAN: trusted.host.com A 38.222.74.2
\nNS: 74.222.38.in-addr.arpa NS ns.sventech.com
\nNS: 74.222.38.in-addr.arpa NS ns1.sventech.com
\nAD: ns.sventech.com A 38.222.74.2
\nAD: ns1.sventech.com A 38.222.74.10
\n\u90a3\u4e48\u73b0\u5728unix\u4e3b\u673a\u5c31\u8ba4\u4e3a38.222.74.2\u5c31\u662f\u771f\u6b63\u7684trusted.host.com\u4e86,\u6211\u4eec\u7684\u76ee\u7684\u8fbe\u5230\u4e86!
\n\u8fd9\u79cdIP\u6b3a\u9a97\u7684\u6761\u4ef6\u662f:\u4f60\u5fc5\u987b\u6709\u4e00\u53f0Internet\u4e0a\u7684\u6388\u6743\u7684DNS\u670d\u52a1\u5668,\u5e76\u4e14\u4f60\u80fd\u63a7\u5236\u8fd9\u53f0\u670d\u52a1\u5668,\u81f3\u5c11\u8981\u80fd\u4fee\u6539\u8fd9\u53f0\u670d\u52a1\u5668\u7684DNS\u8bb0\u5f55,\u6211\u4eec\u7684\u6b3a\u9a97\u624d\u80fd\u8fdb\u884c.<\/p>\n
2>.\u62d2\u7edd\u670d\u52a1\u653b\u51fb Denial of service
\n\u8fd8\u662f\u4e0a\u9762\u7684\u4f8b\u5b50,\u5982\u679c\u6211\u4eec\u66f4\u6539\u4f4d\u4e8e38.222.74.2\u7684\u8bb0\u5f55,\u7136\u540e\u5bf9\u4f4d\u4e8e98.76.54.32\u7684DNS\u670d\u52a1\u5668\u53d1\u51fa2.74.222.38.in-addr.arpa\u7684\u67e5\u8be2,\u5e76\u4f7f\u5f97\u67e5\u8be2\u7ed3\u679c\u5982\u4e0b:
\n\u56e0\u4e3a74.222.38.in-addr.arpa\u5b8c\u5168\u7531\u6211\u4eec\u63a7\u5236,\u6240\u4ee5\u6211\u4eec\u80fd\u5f88\u65b9\u4fbf\u7684\u4fee\u6539\u8fd9\u4e9b\u4fe1\u606f\u6765\u5b9e\u73b0\u6211\u4eec\u7684\u76ee\u7684.
\n38.222.74.2 -> 98.76.54.32 [Answer]
\nNQY: 1 NAN: 2 NNS: 2 NAD: 2
\nQY: 2.74.222.38.in-addr.arpa PTR
\nAN: 2.74.222.38.in-addr.arpa PTR trusted.host.com
\nAN: www.company.com A 0.0.0.1
\nNS: 74.222.38.in-addr.arpa NS ns.sventech.com
\nNS: 74.222.38.in-addr.arpa NS ns1.sventech.com
\nAD: ns.sventech.com A 38.222.74.2
\nAD: ns1.sventech.com A 38.222.74.10
\n\u8fd9\u6837\u4e00\u6765,\u4f7f\u752898.76.54.32\u8fd9\u53f0DNS\u670d\u52a1\u5668\u7684\u7528\u6237\u5c31\u4e0d\u80fd\u8bbf\u95eewww.company.com\u4e86,\u56e0\u4e3a\u8fd9\u4e2aIP\u6839\u672c\u5c31\u4e0d\u5b58\u5728!
\n3>.\u5077\u53d6\u670d\u52a1 Theft of services
\n\u8fd8\u662f\u4e0a\u9762\u7684\u4f8b\u5b50,\u53ea\u662f\u66f4\u6539\u7684\u67e5\u8be2\u7ed3\u679c\u5982\u4e0b:
\n38.222.74.2 -> 98.76.54.32 [Answer]
\nNQY: 1 NAN: 3 NNS: 2 NAD: 2
\nQY: 2.74.222.38.in-addr.arpa PTR
\nAN: 2.74.222.38.in-addr.arpa PTR trusted.host.com
\nAN: www.company.com CNAME www.competitor.com
\nAN: company.com MX 0 mail.competitor.com
\nNS: 74.222.38.in-addr.arpa NS ns.sventech.com
\nNS: 74.222.38.in-addr.arpa NS ns1.sventech.com
\nAD: ns.sventech.com A 38.222.74.2
\nAD: ns1.sventech.com A 38.222.74.10<\/p>\n
\u8fd9\u6837\u4e00\u6765,\u4e00\u4e2a\u672c\u60f3\u8bbf\u95eehttp:\/\/www.competitor.com\u7684\u7528\u6237\u4f1a\u88ab\u5e26\u5230\u53e6\u5916\u4e00\u4e2a\u5730\u65b9,\u751a\u81f3\u662f\u654c\u5bf9\u7684\u516c\u53f8\u7684\u7af9\u53f6(\u60f3\u60f3\u628a\u534e\u4e3a\u548c\u5317\u7535\u8054\u8d77\u6765\u662f\u4ec0\u4e48\u6837\u7684\u611f\u89c9. \ud83d\ude42 ).\u5e76\u4e14\u53d1\u7ed9company.com\u7684\u90ae\u4ef6\u4f1a\u88ab\u53d1\u9001\u7ed9mail.compertitor.com.(\u8d8a\u6765\u8d8a\u89c9\u5f97\u5728\u7f51\u7edc\u4e0a\u7684\u65e5\u5b50\u4e0d\u8e0f\u5b9e! xxbin\u8fd9\u6837\u60f3).
\n4>.\u9650\u5236
\n\u5bf9\u8fd9\u4e9b\u653b\u51fb,\u4e5f\u6709\u4e00\u5b9a\u7684\u9650\u5236.
\n\u9996\u5148,\u653b\u51fb\u8005\u4e0d\u80fd\u66ff\u6362\u7f13\u5b58\u4e2d\u5df2\u7ecf\u5b58\u5728\u7684\u8bb0\u5f55.\u6bd4\u5982\u8bf4,\u5982\u679c\u572898.76.54.32\u8fd9\u4e2aDNS\u670d\u52a1\u5668\u4e0a\u5df2\u7ecf\u6709\u4e00\u6761www.company.com\u7684CNAME\u8bb0\u5f55,\u90a3\u4e48\u653b\u51fb\u8005\u8bd5\u56fe\u66ff\u6362\u4e3awww.competitor.com\u5c06\u4e0d\u4f1a\u6210\u529f.\u7136\u800c,\u4e00\u4e9b\u8bb0\u5f55\u53ef\u4ee5\u7d2f\u52a0,\u6bd4\u5982A\u8bb0\u5f55,\u5982\u679c\u5728DNS\u7684\u7f13\u5b58\u4e2d\u5df2\u7ecf\u5b58\u5728\u4e00\u6761www.company.com\u7684A\u8bb0\u5f55\u4e3a1.2.3.4,\u800c\u653b\u51fb\u8005\u5374\u6b3a\u9a97DNS\u670d\u52a1\u5668\u8bf4www.company.com\u7684A\u8bb0\u5f55\u4e3a4.3.2.1,\u90a3\u4e48www.company.com\u5c06\u4f1a\u6709\u4e24\u4e2aA\u8bb0\u5f55,\u5ba2\u6237\u7aef\u67e5\u8be2\u65f6\u4f1a\u968f\u673a\u8fd4\u56de\u5176\u4e2d\u4e00\u4e2a.(\u5475\u5475,\u8fd9\u4e0d\u662floading balance\u4e48?)
\n\u5176\u6b21,DNS\u670d\u52a1\u5668\u6709\u4e2a\u7f13\u5b58\u5237\u65b0\u65f6\u95f4\u95ee\u9898,\u5982\u679cwww.netbuddy.org\u7684TTL\u4e3a7200,\u90a3\u4e48DNS\u670d\u52a1\u5668\u4ec5\u4ec5\u4f1a\u628awww.netbuddy.org\u7684\u4fe1\u606f\u7f13\u5b587200\u79d2\u6216\u8005\u8bf4\u4e24\u4e2a\u5c0f\u65f6.\u5982\u679c\u653b\u51fb\u8005\u653e\u5165\u4e00\u6761TLL\u4e3a604800\u7684A\u8bb0\u5f55,\u90a3\u4e48\u8fd9\u6761\u8bb0\u5f55\u5c06\u4f1a\u5728\u7f13\u5b58\u4e2d\u4fdd\u5b58\u4e00\u5468\u65f6\u95f4,\u8fc7\u4e86\u9ed8\u8ba4\u7684\u4e24\u5929\u540e,\u8fd9\u4e2aDNS\u670d\u52a1\u5668\u5c31\u4f1a\u5230\u5904\"\u5206\u53d1\"\u653b\u51fb\u8005\u5047\u9020\u7684\u8bb0\u5f55.
\n\u4e0b\u9762\u662f\u5e38\u7528\u7684\u51e0\u79cd\u53ef\u4ee5\u7d2f\u52a0\u548c\u4e0d\u80fd\u7d2f\u52a0\u7684\u8bb0\u5f55:
\nA can add
\nNS can add
\nMX can add
\nPTR cannot add<\/p>\n
------------------------------------------------------------------------------------------------------------------------------------------------------<\/p>\n
dig +trace baidu.com<\/p>\n
; <<>> DiG 9.6.1-P1 <<>> +trace baidu.com
\n;; global options: +cmd
\n. 513704 IN NS M.ROOT-SERVERS.NET.
\n. 513704 IN NS J.ROOT-SERVERS.NET.
\n. 513704 IN NS L.ROOT-SERVERS.NET.
\n. 513704 IN NS C.ROOT-SERVERS.NET.
\n. 513704 IN NS D.ROOT-SERVERS.NET.
\n. 513704 IN NS F.ROOT-SERVERS.NET.
\n. 513704 IN NS A.ROOT-SERVERS.NET.
\n. 513704 IN NS K.ROOT-SERVERS.NET.
\n. 513704 IN NS H.ROOT-SERVERS.NET.
\n. 513704 IN NS E.ROOT-SERVERS.NET.
\n. 513704 IN NS G.ROOT-SERVERS.NET.
\n. 513704 IN NS I.ROOT-SERVERS.NET.
\n. 513704 IN NS B.ROOT-SERVERS.NET.
\n;; Received 260 bytes from 127.0.0.1#53(127.0.0.1) in 15 ms<\/p>\n
com. 172800 IN NS F.GTLD-SERVERS.NET. baidu.com. 172800 IN NS dns010.d.register.com. baidu.com. 14400 IN SOA dns204.a.register.com. root.register.com. 2010011107 28800 7200 604800 14400 \u539f\u7406\uff1a\u5982\u679c\u53ef\u4ee5\u5192\u5145\u57df\u540d\u670d\u52a1\u5668\uff0c\u7136\u540e\u628a\u67e5\u8be2\u7684IP\u5730\u5740\u8bbe\u4e3a\u653b\u51fb\u8005\u7684IP\u5730\u5740\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u7528\u6237\u4e0a\u7f51\u5c31\u53ea\u80fd\u770b\u5230\u653b\u51fb\u8005\u7684\u4e3b\u9875\uff0c\u800c\u4e0d\u662f\u7528\u6237\u60f3\u8981\u53d6\u5f97\u7684\u7f51\u7ad9\u7684\u4e3b\u9875\u4e86\uff0c\u8fd9\u5c31\u662fDNS\u6b3a\u9a97\u7684\u57fa\u672c\u539f\u7406\u3002DNS\u6b3a\u9a97\u5176\u5b9e\u5e76\u4e0d\u662f\u771f\u7684...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-745","post","type-post","status-publish","format-standard","hentry","category-hacker"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=745"}],"version-history":[{"count":0,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/745\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liangliang.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\ncom. 172800 IN NS G.GTLD-SERVERS.NET.
\ncom. 172800 IN NS I.GTLD-SERVERS.NET.
\ncom. 172800 IN NS L.GTLD-SERVERS.NET.
\ncom. 172800 IN NS J.GTLD-SERVERS.NET.
\ncom. 172800 IN NS D.GTLD-SERVERS.NET.
\ncom. 172800 IN NS C.GTLD-SERVERS.NET.
\ncom. 172800 IN NS M.GTLD-SERVERS.NET.
\ncom. 172800 IN NS K.GTLD-SERVERS.NET.
\ncom. 172800 IN NS A.GTLD-SERVERS.NET.
\ncom. 172800 IN NS B.GTLD-SERVERS.NET.
\ncom. 172800 IN NS E.GTLD-SERVERS.NET.
\ncom. 172800 IN NS H.GTLD-SERVERS.NET.
\n;; Received 487 bytes from 192.228.79.201#53(B.ROOT-SERVERS.NET) in 185 ms<\/p>\n
\nbaidu.com. 172800 IN NS dns050.c.register.com.
\nbaidu.com. 172800 IN NS dns190.b.register.com.
\nbaidu.com. 172800 IN NS dns204.a.register.com.
\n;; Received 192 bytes from 192.43.172.30#53(I.GTLD-SERVERS.NET) in 93 ms<\/p>\n
\n;; Received 89 bytes from 216.21.231.204#53(dns204.a.register.com) in 283 ms<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"