\n\nCU->S
\nS->Root
\nRoot->S
\nS->ARPA
\nARPA->S
\nS->in-addr.arpa.
\nin-addr.arpa.->S
\nS->122.in-addr.arpa.
\n122.in-addr.arpa.->S
\nS->136.61.in-addr.arpa.
\n136.61.in-addr.arpa.->S
\nS->135.136.61.in-addr.arpa.
\n135.136.61.in-addr.arpa.->S
\nS->CU<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u767c\u751f 12 \u6b21
\n(domain \u6108\u9577\u67e5\u6108\u591a\u6b21\u4e0d\u662f\u55ce !? )<\/p>\n \u5f88\u53ef\u60dc, CU \u7684 IP \u6c92\u6709\u53cd\u89e3,\u6700\u5f8c\u53ea\u5230 122.in-addr.arpa. \u800c\u4ee5,\u6240\u4ee5\u67e5\u8a62\u53ea\u5230
\n\u9019\u88cf\u800c\u4ee5,\u90a3\u4e5f\u767c\u751f\u4e868\u6b21\u5440.\u518d\u4f86\u770b,\u6b63\u89e3\u6703 Cache,\u88ab (S) Cache 6 \u5c0f\u6642,\u90a3\u53cd\u89e3
\n\u5462 ? \u8ddf\u672c\u662f\u5931\u6557\u7684\u5440…\u62b1\u6b49,\u591a\u6578\u7684 DNS \u5728\u767c\u751f\u6642\u6703\u518d\u67e5\u4e00\u6b21,\u5c11\u6578\u7684 DNS \u6703\u505a
\nnegative cache (ncache),\u82e5\u6709\u505a ncache,\u7b97\u4f60\u5e78\u904b,\u90a3 apnic \u628a\u9019\u500b\u503c\u8a2d\u6210\u5169\u5929,
\n\u4f46\u9019\u53ea\u662f\u5c11\u6578\u800c\u4ee5.<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n61.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 172800\u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a0ns1.apnic.net. read-TXT-record-of-zone-first-dns-admin.apnic.net.
\n2004081901 7200 1800 604800 172800<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u8a3b:ncache \u6703\u770b SOA \u7b2c\u4e94\u500b\u6578\u5b57,\u5728 bind 8 \u53eb min TTL,bind 9 \u53eb ncache TTL,
\nncache \u767c\u751f\u6642(\u5c31\u662f DNS \u77e5\u9053\u627e\u4e0d\u5230\u7b54\u6848),\u6703\u548c\u6b64\u503c\u548c SOA \u7684 TTL \u503c\u8ab0\u9ad8\u800c\u5b9a,
\n\u4f46\u662f\u4f60\u7684 DNS Server \u6709 ncache \u529f\u80fd\u55ce !? (\u9019\u500b\u8b70\u984c\u9019\u88cf\u5c31\u4e0d\u8ad6\u8ff0\u4e86,\u6703\u53d7\u592a\u591a
\n\u56e0\u7d20\u5f71\u97ff)<\/p>\n \u597d\u4e86,\u73fe\u5728\u6211\u5011\u77e5\u9053,\u4e0d\u50c5\u767c\u751f\u983b\u7387\u53cd\u89e3\u591a,Recusion \u4e5f\u662f\u53cd\u89e3\u591a,\u70ba\u4ec0\u9ebc\u4f60\u8981\u6d6a\u8cbb
\n\u9019\u9ebc\u591a\u7684 Traffic \u5462 !? \u66f4\u6709\u610f\u601d\u7684\u662f….\u5982\u679c\u5168\u4e2d\u570b\u4e0a\u5343\u842c\u500b IP \u53ef\u89e3\u7684\u4e0d\u5230
\n3%,\u90a3\u53c8\u662f\u4e00\u500b\u4ec0\u9ebc\u6a23\u7684\u60c5\u6cc1\u5462 !? \u53cd\u89e3\u771f\u6b63\u7684\u542b\u7fa9\u662f\u4ec0\u9ebc\u5462!? \u70ba\u4ec0\u9ebc\u53f0\u7063\u53ef
\n\u4ee5\u5230 50% \u5de6\u53f3\u7684\u53cd\u89e3\u7387\u5462 !?<\/p>\n 3. \u4e2d\u570b\u6709\u591a\u5c11\u500b IP ? \u53cd\u89e3\u60c5\u6cc1\u5982\u4f55 ?
\n\u9019\u500b\u6578\u5b57\u4f60\u53ef\u4ee5\u5f9e APNIC \u53d6\u5f97,\u4e26\u8a08\u7b97\u51fa\u4f86:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\nwget http:\/\/ftp.apnic.net\/stats\/apnic\/delegated-apnic-latest
\n(cat delegated-apnic-latest | grep\u00a0 -i ‘CN|ipv4′ |cut -f 5 -d’|’ | tr ‘\\n’ ‘+’;echo 0) | bc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nAns:54449664 (2004\/09\/04)
\n\u6211\u81ea\u5df1\u4e09\u5e74\u524d\u66fe\u505a\u904e\u9019\u6a23\u7684\u6e2c\u8a66,\u5c07\u4e2d\u570b\u7684\u6240\u6709 IP \u90fd\u67e5\u4e00\u6b21\u53cd\u89e3,\u5be6\u969b\u7684\u7e3d\u6578\u5df3\u4e0d
\n\u8a18\u5f97\u4e86,\u4f46\u8a18\u5f97\u7d50\u679c\u662f 2%,\u6240\u4ee5,\u6211\u5011\u5148\u4f86\u63a8\u8ad6\u73fe\u6cc1,\u4f46\u662f\u9019\u908a\u6211\u5011\u9084\u662f\u53ef\u4ee5\u4f86\u505a\u4e00\u500b
\n\u7c21\u55ae\u7684\u5be6\u9a57:<\/p>\n \u4e0a\u4e00\u7bc7\u767c\u73fe\u4e00\u4e9b\u5c0f\u932f\u8aa4,\u4ee5\u4e0b\u505a\u4e86\u4e00\u4e9b\u8abf\u6574,\u4ee5\u6c42\u5f97\u66f4\u6b63\u78ba\u7684\u503c,\u539f\u4f86\u7684 script \u6709\u9ede\u554f\u984c:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n#\u53d6\u5f97 IP (net_id) , \u5171 731 \u6bb5,\u6bcf\u6bb5IP\u6578\u91cf\u4e0d\u7b49
\ncat delegated-apnic-latest | grep\u00a0 -i ‘CN|ipv4′ |cut -f 4 -d’|’ >ipv4_cn
\n#\u628a .0 \u90fd\u63db\u6210 .1,\u4e3b\u8981\u662f\u8981 host,\u7528 .0 \u4f86\u67e5\u53ef\u80fd\u6703\u6709\u554f?#125;,\u96d6\u8aaa .0 \u90fd\u63db\u6210 .1 \u53ef\u80fd\u4e0d\u6e96,\u4f46\u4e5f\u53ea\u5b58\u5728 \/24 \u7684\u554f?#125;\u624d\u6709
\nreplace ‘.0’ ‘.1’ — ipv4_cn
\nfor ip in `cat ipv4_cn`
\ndo
\necho -e “$ip==>$(dig -x $ip |\u00a0 grep ‘IN.*NS’ | head -1)” >>ns_rr_cn
\ndone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u9019\u500b\u7b54\u6848\u662f 72 \u7b46,\u7d04\u70ba1\/10 ,\u4f9d\u7167\u7d04\u6578,\u4e2d\u570b\u7684\u53cd\u89e3\u7387\u6700\u591a\u50c5\u70ba 10%,\u5982\u679c\u9019\u5176\u4e2d\u4e26
\n\u6c92\u6709\u8a2d\u932f\u7684\u6216\u5c11\u8a2d\u7684,\u96a8\u610f\u8209\u500b “\u5317\u5927,pku.edu.cn” \u7684\u4f8b\u5b50\u597d\u4e86(\u7b2c\u4e00\u500b\u5c31\u6311\u4e2d\u597d
\nsample,\u9019\u500b sample \u6211\u5011\u5f8c\u9762\u518d\u8b1b\u6388\u6b0a\u6642\u9084\u6703\u7528\u5230,\u8acb\u52d9\u5fc5\u7406\u89e3):
\n\u5317\u5927\u7684 IP \u662f 162.105.x.x,\u6211\u5011\u5148\u4f86\u770b\u770b\u6388\u6b0a(NS delegation) \u53ca\u89e3\u6790\u60c5\u5f62\u5982\u4f55:<\/p>\n IP \u5728\u53cd\u67e5\u6642,\u4e00\u5b9a\u6703\u5148\u5230 in-addr.arpa. \u6211\u60f3\u9019\u662f\u5f88\u5e73\u5e38\u7684\u89c0\u5ff5,\u6240\u4ee5\u6211\u5011\u67e5\u8a62
\nin-addr.arpa \u6709\u90a3\u4e9b NameServer:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48366
\n;; flags: qr rd ra; QUERY: 1, ANSWER: 12, AUTHORITY: 0, ADDITIONAL: 1<\/p>\n ;; QUESTION SECTION:
\n;in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; ANSWER SECTION:
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 L.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 M.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 A.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 B.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 C.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 D.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 E.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 F.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 G.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 H.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 I.ROOT-SERVERS.NET.
\nin-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 K.ROOT-SERVERS.NET.<\/p>\n ;; ADDITIONAL SECTION:
\nM.ROOT-SERVERS.NET.\u00a0 \u00a0 \u00a058742\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0202.12.27.33<\/p>\n ;; Query time: 14 msec
\n;; SERVER: 211.72.210.250#53(211.72.210.250)
\n;; WHEN: Tue Sep\u00a0 7 13:16:06 2004
\n;; MSG SIZE\u00a0 rcvd: 254<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e26\u4e14 DNS \u662f\u96a8\u6a5f\u9078\u4e00\u90e8\u4f86\u67e5,\u6240\u4ee5\u6211\u5011\u8981\u67e5 162.105.x.x \u5c31\u96a8\u4fbf\u9078\u4e00\u90e8,\u4f46\u662f
\n\u5148\u5f9e IP \u7684\u7b2c\u4e00\u78bc\u67e5\u8d77:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @L.ROOT-SERVERS.NET. 162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @202.12.27.33 162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58133
\n;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 0<\/p>\n ;; QUESTION SECTION:
\n;162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; AUTHORITY SECTION:
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 chia.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 dill.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 BASIL.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 henna.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 indigo.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 epazote.ARIN.NET.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 figwort.ARIN.NET.<\/p>\n ;; Query time: 385 msec
\n;; SERVER: 202.12.27.33#53(202.12.27.33)
\n;; WHEN: Tue Sep\u00a0 7 13:16:21 2004
\n;; MSG SIZE\u00a0 rcvd: 185<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u518d\u4f86\u9019\u4e00\u6b65,\u6211\u5011\u9084\u662f\u67e5 162,\u9a57\u8b49\u4e0a\u5c64\u8207\u4e0b\u5c64\u7684 NS RRs \u662f\u5426\u4e00\u81f4,\u4e0d\u4e00\u81f4\u6211\u5011
\n\u901a\u5e38\u6703\u7a31\u70ba Lame Server,\u9019\u6703\u9020\u6210\u89e3\u6790\u4e0a\u7684\u554f\u984c:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @chia.arin.net 162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @chia.arin.net 162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30464
\n;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 8<\/p>\n ;; QUESTION SECTION:
\n;162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; ANSWER SECTION:
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 figwort.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 chia.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 dill.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 basil.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 henna.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 indigo.arin.net.
\n162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 epazote.arin.net.<\/p>\n ;; ADDITIONAL SECTION:
\nchia.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.5.6.32
\nchia.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 AAAA\u00a0 \u00a0 2001:440:2000:1::21
\ndill.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.35.51.32
\nbasil.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 \u00a010800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.55.83.32
\nhenna.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 \u00a010800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.26.92.32
\nindigo.arin.net.\u00a0 \u00a0 \u00a0 \u00a0 10800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.31.80.32
\nepazote.arin.net.\u00a0 \u00a0 \u00a0 \u00a010800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.41.162.32
\nfigwort.arin.net.\u00a0 \u00a0 \u00a0 \u00a010800\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0192.42.93.32<\/p>\n ;; Query time: 227 msec
\n;; SERVER: 192.5.6.32#53(chia.arin.net)
\n;; WHEN: Tue Sep\u00a0 7 13:16:43 2004
\n;; MSG SIZE\u00a0 rcvd: 325<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u7531\u6b64\u53ef\u77e5,\u4e0a\u4e0b\u662f\u4e00\u81f4\u7684,\u4e5f\u5c31\u662f\u5728 in-addr.arpa \u4e2d\u5c07 162 \u6307\u5411\u4e86\u4e03\u90e8 NS,\u9019
\n\u4e03\u90e8 NS \u90fd\u6709\u8a2d\u7acb\u8d77\u4f86,\u4e14\u4e03\u90e8\u7684\u540d\u7a31\u8207\u4e0a\u5c64\u7684\u540d\u7a31\u7686\u5b8c\u5168\u6b63\u78ba\u7684\u5c0d\u61c9,\u81f3\u65bc AAAA
\n\u9019\u662fIPv6 \u7684\u8a18\u9304,\u60f3\u4f86\u662f\u9019\u90e8\u4e3b\u6a5f\u540c\u6642\u6709 IPv4\/IPv6 \u4f4d\u5740.<\/p>\n \u518d\u4f86,\u6211\u5011\u5f9e chia.arin.net \u770b,162.105.x.x \u5206\u914d\u7d66\u5317\u5927\u4f7f\u7528\u7684\u60c5\u5f62,\u5f97\u5230\u4e0b\u5217\u7d50\u679c:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @chia.arin.net 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @chia.arin.net 105.162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8873
\n;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 0<\/p>\n ;; QUESTION SECTION:
\n;105.162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; AUTHORITY SECTION:
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 sun1000e.pku.edu.cn.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns.pku.edu.cn.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 pkuns.pku.edu.cn.<\/p>\n ;; Query time: 225 msec
\n;; SERVER: 192.5.6.32#53(chia.arin.net)
\n;; WHEN: Tue Sep\u00a0 7 13:17:31 2004
\n;; MSG SIZE\u00a0 rcvd: 108<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u9019\u4ee3\u8868\u8457\u7531 162 \u4e0b\u9577\u51fa\u4f86\u7684 105 (162.105.x.x) \u57fa\u672c\u4e0a\u90fd\u7531\u5317\u5927\u7ba1\u7406,\u90a3\u5317\u5927\u9019\u4e09\u90e8
\nNS \u5462,\u4e0d\u77e5\u662f\u4ec0\u9ebc\u6a23\u7684\u60c5\u5f62 ?<\/p>\n \u6240\u4ee5\u6211\u5011\u5c31\u67e5\u8a62\u5317\u5927\u9019\u4e09\u90e8 NS ,\u770b\u770b\u6709\u4ec0\u9ebc\u72c0\u6cc1:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @sun1000e.pku.edu.cn 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @sun1000e.pku.edu.cn 105.162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; connection timed out; no servers could be reached<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Time Out,\u8a66\u4e86 N \u6b21\u90fd\u662f Timeout …\u6388\u6b0a\u5931\u6557,\u61c9\u8a72\u662f\u9663\u4ea1\u6216\u662f\u63db\u6389\u4e86\u5427..
\n\u53cd\u89e3\u67e5\u8a62\u82e5\u4e09\u9078\u4e00\u9078\u5230\u9019\u90e8,\u5c31\u67e5\u4e0d\u51fa\u4f86\u4e86,\u5373\u6703\u8b8a\u6210\u6c92\u6709\u53cd\u89e3\u72c0\u6cc1.<\/p>\n \u518d\u4f86\u6211\u5011\u9078\u7b2c\u4e8c\u90e8(DNS \u67e5\u8a62\u6642\u4e0d\u6703\u81ea\u52d5\u5207\u5230\u7b2c\u4e8c\u90e8,\u9078\u5230 sun1000e ,\u6c92\u6709\u67e5\u5230\u4e0d\u6703\u81ea\u52d5
\nSwitch \u5230\u7b2c\u4e8c\u90e8\u7684,\u6b64\u8655\u6211\u5011\u610f\u5728\u8b1b\u89e3,\u6240\u4ee5\u53ef\u4ee5\u7528\u624b\u52d5\u7684\u65b9\u5f0f\u4f86\u9a57\u8b49):<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @ns.pku.edu.cn 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @ns.pku.edu.cn 105.162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45872
\n;; flags: qr aa rd; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 3<\/p>\n ;; QUESTION SECTION:
\n;105.162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; ANSWER SECTION:
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns.PKU.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 dns.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns2.cuhk.hk.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 pkuns.PKU.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 sun1000e.PKU.EDU.CN.<\/p>\n ;; ADDITIONAL SECTION:
\nns.PKU.EDU.CN.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 86400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0202.112.7.13
\npkuns.PKU.EDU.CN.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0162.105.129.27
\nsun1000e.PKU.EDU.CN.\u00a0 \u00a0 86400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0162.105.129.26<\/p>\n ;; Query time: 523 msec
\n;; SERVER: 202.112.7.13#53(ns.pku.edu.cn)
\n;; WHEN: Tue Sep\u00a0 7 13:18:16 2004
\n;; MSG SIZE\u00a0 rcvd: 199<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u54e6\u8036~\u6709\u56de\u61c9\u8036…\u4e0d\u904e\u70ba\u4ec0\u9ebc\u662f\u4e94\u90e8…162.in-addr.arpa. \u4e0a\u5c64\u4e0d\u662f\u8aaa\u6709\u4e09\u90e8\u7ba1
\n162.105.x.x \u55ce? \u4f60(ns.pku.edu.tw) \u53c8\u8aaa\u6709\u4e94\u90e8,\u6211\u8981\u76f8\u4fe1\u8ab0 !? \u8ab0\u544a\u8a34\u6211\u4f60\u5011
\n\u90a3\u500b\u8aaa\u7684\u662f\u771f\u7684 ><”<\/p>\n \u7b97\u4e86,\u6211\u5011\u770b 162.in-addr.arpa. \u4e0a\u8b1b\u7684\u7b2c\u4e09\u90e8\u597d\u4e86:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @pkuns.pku.edu.cn 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @pkuns.pku.edu.cn 105.162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; connection timed out; no servers could be reached<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n timeout ….\u7121\u8a00\u7684\u7d50\u5c40,\u56e0\u70ba\u5982\u679c\u6709\u4eba\u8981\u67e5 162.105.1.1,\u5373\u4f7f\u771f\u6709\u9019\u500b\u7684\u53cd\u89e3\u8a18\u9304(PTR),\u6709
\n\u4e09\u5206\u4e4b\u4e8c\u7684\u6a5f\u6703\u6703\u67e5\u4e0d\u5230…,\u5982\u679c\u662f\u9019\u6a23\u90a3\u67e5\u8a62\u5931\u6557\u7387\u53ef\u5c31\u592a\u9ad8\u4e86.<\/p>\n \u597d\u5427,\u90a3\u524d\u9762 ns.pku.edu.tw \u4f60\u8aaa\u6709\u4e94\u90e8,\u5176\u4e2d\u4e09\u90e8\u6211\u5011\u770b\u904e\u4e86,\u90a3\u6211\u5011\u770b\u4f60\u8aaa\u7684\u5929\u5916\u90a3\u5169\u90e8\u597d\u4e86
\nSIP> dig @dns.EDU.CN 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @dns.EDU.CN 105.162.in-addr.arpa. ns
\n;; global options: printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 40192
\n;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0<\/p>\n ;; QUESTION SECTION:
\n;105.162.in-addr.arpa. IN NS<\/p>\n ;; Query time: 560 msec
\n;; SERVER: 202.112.0.35#53(dns.EDU.CN)
\n;; WHEN: Tue Sep 7 13:45:50 2004
\n;; MSG SIZE rcvd: 38
\n[\/code]
\n\u9a19\u4eba~\u9019\u90e8\u6839\u672c\u5c31\u6c92\u6709\u7ba1 105.162.in-addr.arpa. \u4f60\u8aaa\u5047\u8a71!<\/p>\n \u518d\u4f86\u770b\u6700\u5f8c\u4e00\u500b\u5e0c\u671b:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \nSIP> dig @ns2.cuhk.hk. 105.162.in-addr.arpa. ns<\/p>\n ; <<>> DiG 9.2.3 <<>> @ns2.cuhk.hk. 105.162.in-addr.arpa. ns
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31411
\n;; flags: qr aa rd; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 5<\/p>\n ;; QUESTION SECTION:
\n;105.162.in-addr.arpa.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 IN\u00a0 \u00a0 \u00a0 NS<\/p>\n ;; ANSWER SECTION:
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 pkuns.PKU.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 sun1000e.PKU.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns.PKU.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 dns.EDU.CN.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns2.cuhk.hk.<\/p>\n ;; ADDITIONAL SECTION:
\npkuns.PKU.EDU.CN.\u00a0 \u00a0 \u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0162.105.129.27
\nsun1000e.PKU.EDU.CN.\u00a0 \u00a0 86400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0162.105.129.26
\nns.PKU.EDU.CN.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 86400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0202.112.7.13
\ndns.EDU.CN.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0172800\u00a0 IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0202.112.0.35
\nns2.cuhk.hk.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 86400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 A\u00a0 \u00a0 \u00a0 \u00a0137.189.6.21<\/p>\n ;; Query time: 64 msec
\n;; SERVER: 137.189.6.21#53(ns2.cuhk.hk.)
\n;; WHEN: Tue Sep\u00a0 7 13:46:36 2004
\n;; MSG SIZE\u00a0 rcvd: 231<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u9084\u597d,\u6709\u4e86\u7b54\u6848\u4e86,\u770b\u4f86 ns2.cuhk.hk \u4ee3\u7ba1\u7684 domain \u9084\u771f\u4e0d\u5c11, TTL \u90fd\u4e0d\u6703\u6e1b\u5c11,
\n\u904e\u7a0b\u4e2d\u5171\u6709\u4e94\u90e8 NS,\u53ea\u6709\u5169\u90e8\u6b63\u78ba Work (\u9019\u5169\u90e8\u6709\u4e00\u90e8\u4e0d\u5728\u4e0a\u5c64\u51fa\u73fe),\u6709\u4e8c\u90e8\u4e0d\u80fd
\n\u9023,\u6709\u4e00\u90e8\u4e0d\u7ba1\u9019\u500b\u53cd\u89e3\u7684 zone , \u5c31\u901a\u7b97\u4f60 2\/5 \u53ef\u89e3\u5427!<\/p>\n \u4ee5\u4e0a\u6709\u4e9b\u90e8\u4efd\u5f8c\u9762\u6211\u5011\u9084\u6703\u770b\u5230,\u4f46\u662f\u5f9e\u9019\u500b\u4f8b\u5b50\u4f86\u770b,105.162.in-addr.arpa. \u7684\u53cd\u89e3\u6709
\nN \u500b\u554f\u984c,\u5982\u679c\u9023 pku \u90fd\u9019\u6a23…<\/p>\n \u53e6\u4e00\u500b\u91cd\u9ede,\u5c31\u662f\u975e edu\/ac doamin \u90e8\u4efd,<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n#\u6211\u5011\u53ea\u8981 NS \u8a18\u9304,\u4e26\u4e14\u628a edu.cn\/ac.cn \u53bb\u6389,\u4f86\u770b\u770b\u6700\u591a\u4eba\u4f7f\u7528\u7684 ISP \u72c0\u6cc1
\nSIP>cat ns_rr_tw | grep NS|grep -Eiv ‘edu.cn|ac.cn’
\n161.207.1.1==>207.161.in-addr.arpa. 85037 IN NS dns2.cnpc.com.cn.
\n202.1.176.1==>176.1.202.in-addr.arpa. 20252 IN NS pijin.com.sb.
\n202.3.77.1==>77.3.202.in-addr.arpa. 51124 IN NS ns2.yahoo.com.
\n202.38.184.1==>1.184.38.202.in-addr.arpa. 85052 IN PTR ANS.CERNET.NET.
\n202.93.1.1==>1.93.202.in-addr.arpa. 51113 IN NS netmgr.cninfo.com.cn.
\n202.96.136.1==>136.96.202.in-addr.arpa. 85067 IN NS dns.guangzhou.gd.cn.
\n202.97.8.1==>8.97.202.in-addr.arpa. 85067 IN NS ns1.cn.net.
\n202.97.16.1==>16.97.202.in-addr.arpa. 85066 IN NS ns1.cn.net.
\n202.99.64.1==>64.99.202.in-addr.arpa. 62844 IN NS ns.tpt.net.cn.
\n202.100.112.1==>112.100.202.in-addr.arpa. 85086 IN NS euro2000.yc.nx.cn.
\n202.100.200.1==>200.100.202.in-addr.arpa. 85094 IN NS ns.hihkptt.net.cn.
\n202.100.208.1==>208.100.202.in-addr.arpa. 85093 IN NS ns.hisyptt.net.cn.
\n202.101.96.1==>96.101.202.in-addr.arpa. 85093 IN NS dns.fz.fj.cn.
\n202.102.128.1==>128.102.202.in-addr.arpa. 5908 IN NS ns.spt.net.cn.
\n202.103.224.1==>224.103.202.in-addr.arpa. 9511 IN NS ns.lzptt.gx.cn.
\n202.130.224.1==>224.130.202.in-addr.arpa. 34811 IN NS ns2.east.net.cn.
\n202.165.96.1==>96.165.202.in-addr.arpa. 51258 IN NS ns3.yahoo.com.
\n203.81.16.1==>16.81.203.in-addr.arpa. 85212 IN NS ns1.net-infinity.net.
\n203.93.16.1==>16.93.203.in-addr.arpa. 600 IN NS ns.gb.com.cn.
\n210.21.1.1==>1.21.210.in-addr.arpa. 85225 IN NS gz1-dns.gdgz.cncnet.net.
\n211.101.128.1==>128.101.211.in-addr.arpa. 42074 IN NS ns.capitalnet.com.cn.
\n218.64.1.1==>1.64.218.in-addr.arpa. 85284 IN NS ns.jxjjptt.net.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u9019\u500b\u90e8\u4efd\u6211\u5c31\u4e0d\u77e5\u8ab0\u6709\u540d\u4e86,\u4e0d\u904e\u770b\u5230 capitalnet.com.cn \u770b\u540d\u5b57\u597d\u50cf\u898f\u6a21\u4e0d\u5c0f\u7684\u611f\u89ba,
\n\u4f60\u53ef\u4ee5\u7528\u50cf\u4e0a\u9762\u4e00\u6a23\u7684\u6d41\u7a0b,\u4e00\u76f4\u67e5\u4e0b\u4f86,\u6703\u767c\u73fe\u5230 capitalnet.com.cn \u9019\u4e00\u5c64\u6642,\u53ea\u6709\u4e00\u500b
\nNS RRs,\u4f46\u662f\u4ed6\u4e0a\u5c64\u767b\u8a18\u7684\u662f\u5169\u500b….\u4e5f\u662f\u4e0d\u4e00\u81f4,\u7576\u7136,\u4e5f\u6709\u5f88\u591a\u505a\u7684\u975e\u5e38\u597d\u7684,\u50cfeast.net.cn
\n\u5c31 100 \u5206!<\/p>\n \u8a3b:NS \u4e0a\u4e0b\u4e0d\u4e00\u81f4\u60c5\u5f62,\u4e0d\u540c\u7684 Bind \u7248\u672c\u5728\u67e5\u8a62\u8655\u7406\u4e0a\u7565\u6709\u4e0d\u540c,\u975e\u672c\u8655\u91cd\u9ede\u6240\u5728,\u500b\u4eba
\n\u4ea6\u4e0d\u6253\u7b97\u53e6\u8d77\u4e3b\u984c\u8aaa\u660e<\/p>\n \u53e6\u5916\u4e00\u500b\u91cd\u9ede\u5c31\u662f, Reverse Domain \u7684 SOA \u4e2d Email \u4e5f\u662f\u8981\u6ce8\u610f\u4e4b\u8655 !<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \n64.119.202.in-addr.arpa. 10800\u00a0 IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a064.119.202.in-addr.arpa. root.localhost.64.119.202.in-addr.arpa. 2 28800 7200 604800 86400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e0a\u9762 202 \u7d50\u679c sample \u7684\u7b2c
\n\u56db\u500b,\u770b\u5230\u9019\u6a23\u7684\u5167\u5bb9\u5176\u5be6\u5927\u6982\u9019\u500b\u53cd\u89e3\u6388\u6b0a\u6703\u6709\u554f\u984c,\u56e0\u70ba\u7ba1\u7406\u4eba\u54e1\u89c0\u5ff5\u4e0d\u597d,\u901a\u5e38\u6211\u5011\u5728
\nSOA \u4e2d\u7684 email address \u6703\u8981\u6c42\u81f3\u5c11\u662f\u500b\u53ef\u8cc7\u9023\u7d61\u7684 email,\u4f46\u9019\u500b sample \u7684 email \u662f\u5bc4
\n\u7d66\u81ea\u5df1,\u5982\u679c\u662f\u6b63\u89e3\u6a94,\u4f60\u9084\u53ef\u4ee5\u53cd\u61c9\u904e\u4f86,\u4f46\u53cd\u89e3\u4f60\u6c92\u6cd5\u5c07 localhost \u60f3\u50cf\u6210\u4ec0\u9ebc domain.
\n\u6240\u4ee5,\u9019\u662f\u500b\u771f\u5be6\u932f\u8aa4\u7684\u793a\u7bc4.\u4f60\u81ea\u5df1\u5728\u505a\u6642,\u4e5f\u8981\u6ce8\u610f\u9019\u4e00\u9ede,zone contact email \u8981\u5c0d.<\/p>\n \u6240\u4ee5,\u7d9c\u5408\u524d\u9762\u8ad6\u9ede,\u53cd\u89e3\u7d55\u5c0d\u6c92\u6709 1\/10 ,\u5373\u4f7f\u6709 NS \u6307\u5411\u7684\u9054\u5230 1\/10 !<\/p>\n \u518d\u4f86,\u6211\u5011\u770b\u770b ISC \u7684\u5e74\u5ea6\u8abf\u67e5\u5831\u544a, http:\/\/www.isc.org\/ops\/ds\/reports\/2004-01\/dist-bynum.php<\/a>
\n\u4f60\u6703\u767c\u73fe\u6578\u5b57\u975e\u5e38\u4f4e,\u4e0d\u5230 20 \u842c\u500b ip \u53ef\u89e3\u6210 .cn , \u6211\u5011\u5047\u8a2d, CN \u4e0b\u7684 IP,\u5f88\u591a\u90fd\u89e3\u6210
\ncom\/net\/org \u597d\u4e86,\u5c07\u9019\u500b\u6578\u5b57x10,\u7d50\u679c\u70ba 1604210 ,1604210\/54449664,\u7b54\u6848\u662f\u591a\u5c11\u81ea\u5df1\u7b97\u4e00\u4e0b
\n(\u60f3\u4e00\u4e0b,x10 \u662f\u9ad8\u4f30\u9084\u662f\u4f4e\u4f30\u4e86,\u70ba\u4ec0\u9ebc)<\/p>\nCN \u53cd\u89e3\u6388\u6b0a\u5c0f\u7d50:
\n\u5f97\u5230 72 \u884c\u8cc7\u6599\u610f\u5473\u8457\u4ec0\u9ebc,\u4ee3\u8868\u8457\u6709600 \u9918\u6bb5 APNIC \u5206\u914d\u7d66 CN \u7684 IP \u6c92\u6709\u6388\u6b0a\u51fa\u53bb,
\n\u4f60\u60f3\u8981\u505a\u53cd\u89e3,\u6216\u53cd\u89e3\u6388\u6b0a,\u800c\u4f60\u5728\u9019 600 \u9918\u6bb5\u4e2d,\u90a3\u5c31\u4e0d\u5fc5\u4e86,\u9019\u5167\u5bb9\u6211\u5c31\u4e0d\u6574\u7406\u4e86
\n,\u4f60\u53ef\u4ee5\u81ea\u5df1\u8a66 dig -x your_IP ,\u82e5 SOA \u51fa\u73fe apnic \u5c31\u662f\u6c92\u6709\u4e86,(\u6211\u731c\u5927\u90e8\u4efd\u6709\u5728\u770b\u9019
\n\u4e00\u7bc7\u7684\u4eba,\u5927\u6982\u90fd\u6703\u51fa\u73fe apnic ,\u90a3\u53ef\u4ee5\u4e0d\u7528\u518d\u5beb\u4e0b\u53bb\u4e86\u55ce!!? ccc)
\n\u70ba\u4ec0\u9ebc APNIC \u6c92\u628a IP \u53cd\u89e3\u6388\u6b0a\u51fa\u4f86!!! \u7b54\u6848\u8981\u53bb\u554f\u4f60\u7684 ISP \u70ba\u4ec0\u9ebc\u6c92\u6709\u53bb\u7533\u8acb\u53cd\u89e3\u6388\u6b0a
\n\u6b0a,APNIC \u90fd\u6709\u8aaa\u600e\u9ebc\u505a,\u505a\u8d77\u4f86\u4e5f\u5f88\u7c21\u55ae,\u4f46\u4f60\u7684 ISP \u53ea\u60f3\u8cfa\u9322,\u4e0d\u60f3\u76e1\u7fa9\u52d9,\u4e5f\u6709\u53ef
\n\u80fd\u662f\u6559\u80b2\u9762\u7684\u554f\u984c,\u6c92\u6709\u4eba\u6559\u904e ISP \u9019\u6a23\u7684\u89c0\u5ff5,\u4f46\u500b\u4eba\u7684\u60f3\u6cd5\u8f03\u50be\u5411\u524d\u8005.<\/p>\n \u53f0\u7063\u7684\u6578\u5b57\u548c\u53f0\u7063 Internet \u6b77\u53f2\u767c\u5c55\u6709\u95dc,\u5f9e TANET (\u5b78\u8853\u7db2\u8def) \u8208\u8d77 ,1996 \u5e74\u5c31\u6559\u80b2
\nUser \u53cd\u89e3\u610f\u7fa9,\u4e26\u4e14\u8981\u6c42\u9023\u7dda\u55ae\u4f4d\u4e00\u5b9a\u8981\u8a2d\u53cd\u89e3,\u4e0d\u7136\u9023\u4e0d\u5230 BBS\/FTP …,\u5230\u4eca\u5929,\u7576\u5e74\u7684\u5b78\u751f
\n\u73fe\u5728\u591a\u5df3\u5165\u884c…\u9019\u90fd\u5f97\u611f\u8b1d TANET \u524d\u8f29\u7684\u52aa\u529b\u5440 ! \u5176\u4e2d\u8457\u529b\u6700\u6df1\u7684\u500b\u4eba\u8a8d\u70ba\u7576\u5c6c nschen
\n(\u9673\u660c\u76db\u8001\u5e2b),\u5728\u7db2\u8def\u4e0a\u7684\u9f13\u5439!! \u4eca\u65e5,\u82e5\u5728\u53f0\u7063\u7684 ISP \u82e5\u4e0d\u505a\u53cd\u89e3(\u6216\u53cd\u89e3\u6388\u6b0a\u6216\u53ef\u81ea\u884c\u4fee\u6539),
\n\u662f\u7121\u6cd5\u88ab\u7528\u6236\u63a5\u53d7\u7684.\u82e5\u5c6c\u52d5\u614bIP,ISP \u4e5f\u6703\u4ee5 IP_addr.dynamic.ISP_domain \u6a19\u793a\u51fa\u4f86,\u8b93 Mail
\nServer admin \u81ea\u884c\u6c7a\u5b9a\u662f\u5426 Reject.<\/p>\n 4. \u53cd\u89e3\u7684\u610f\u7fa9\u4f55\u5728? \u53cd\u89e3\u5c0d\u884c\u70ba\u7684\u5f71\u97ff
\n\u6700\u91cd\u8981\u7684\u89e3\u91cb\u5c31\u662f\u9019\u500b IP \u7684\u7684\u7db2\u8def\u8eab\u4efd\u662f\u88ab\u8a8d\u53ef\u7684 ! \u53ea\u662f\u4f60\u7684 Server \u8a8d\u4e0d\u8a8d\u53ef
\n\u4ed6\u7531\u4f60\u81ea\u5df1 config \u6c7a\u5b9a,\u5982\u524d\u8a00 netman \u5144\u7684\u4f8b\u5b50, mail server \u5fc5\u7136\u6703 check \u53cd\u89e3,check
\n\u4e0d\u5230,\u4f60\u53ef\u4ee5\u6536\u6216\u4e0d\u6536, check \u5230\u662f\u67d0\u500b\u540d\u7a31,\u60a8\u4e5f\u53ef\u4ee5\u6c7a\u5b9a\u6536\u6216\u4e0d\u6536,\u4f8b\u5982,\u4f60\u5c0d xxx \u96fb\u4fe1\u5f88
\n\u4e0d\u6eff,\u62d2\u7d55\u4ed6\u5011\u7684\u9023\u7dda\u6216\u662f\u4fe1\u4ef6,\u4f60\u6703\u60f3\u5230\u4e00\u500b\u554f\u984c,\u4ed6\u5011\u6709\u591a\u5c11IP,\u4f60\u8981\u600e\u9ebc\u67e5,\u8981\u5982\u4f55\u7dad\u8b77\u5440 !?
\n\u4f46\u662f\u82e5\u4ed6\u5011\u6bcf\u500b IP \u90fd\u6709\u53cd\u89e3\u8a2d\u5b9a\u6216\u662f\u53cd\u89e3\u8a2d\u5b9a\u6709\u4e00\u500b\u898f\u5247\u53ef\u5faa,\u4f60\u5c31\u6703\u5f88\u597d\u505a,\u4e5f\u4e0d\u7528\u7279\u5225\u53bb
\n\u7dad\u8b77,\u50cf\u524d\u9762\u8209\u7684\u4f8b\u5b50 IP_addr.dynamic.hinet.net,\u9019\u7a2e Reverse Domain \u53ef\u4ee5\u7528\u5728\u5404\u7a2e\u5730\u65b9,
\n\u5982 DNS \u7684 allow-query,view,allow-update …,Proxy \u7684 ACL …,Firewall ,FTP,
\ntcp_warpper(hosts.allow\/hosts.deny),Apache \u7684 allow\/deny…,\u57fa\u672c\u4e0a\u5beb\u6210\u53cd\u89e3\u683c\u5f0f,\u597d
\n\u4e00\u9ede\u7684\u6aa2\u67e5 rule \u90fd\u662f double check \u7684,\u4f8b\u5982\u4e5f\u5c31\u662f\u9023\u7dda\u7531 IP \u767c\u8d77, Proxy \u4e0a\u6709\u689d ACL \u662f
\n\u540c\u610f mydomain.com.cn \u4ee3\u7406\u670d\u52d9,Proxy \u6703\u67e5\u53cd\u89e3,\u5f97\u5230\u4e00\u500b\u540d\u7a31,\u518d\u5c07\u540d\u7a31\u62ff\u53bb\u67e5\u4e00\u6b21 A \u8a18\u9304,
\n\u9a57\u8b49\u662f\u5426\u70ba mydomain.com.cn, \u6b63\u53cd\u89e3\u7684\u4e00\u81f4\u6027\u4e5f\u5c31\u8b8a\u5f97\u5fc5\u8981.\u6240\u4ee5,\u4e0d\u8ad6\u5c0d IP \u7684\u8a8d\u8b49\u5b58\u53d6\u6709
\n\u7528,\u5c0d\u65bc\u5927\u91cf\u4e0d\u9023\u7e8c\u7684 IP \u66f4\u6709\u7d71\u5408\u7684\u6548\u679c.\u53e6\u5916,\u5c0d\u65bc\u5916\u9762\u7684\u4eba\u4f86\u8aaa,\u7528 IP \u67e5\u4eba\u6216\u516c\u53f8\u5169\u5927\u9014
\n\u5f91,\u53cd\u89e3\u548c whois,CN \u5728\u9019\u65b9\u9762\u7684\u8868\u9762\u90fd\u4e0d\u5920\u597d,\u9019\u662f\u503c\u5f97\u5927\u5bb6\u52aa\u529b\u7684,\u7d66 ISP \u58d3\u529b\u5427,\u773e\u5fd7\u6210\u57ce.<\/p>\n \u53cd\u89e3\u9020\u6210\u7684 delay time sample,\u7531\u672a\u53cd\u89e3\u7684 CU \u6240\u5bc4\u4f86\u7684\u4e09\u5c01\u4e3b\u984c\u56de\u8986\u901a\u77e5:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\nReceived: from chinaunix ([61.135.136.123])
\nby domain (8.13.1\/8.13.1) with SMTP id i83BNOBs031000
\nfor <my_email@domain>; Fri, 3 Sep 2004 19:23:26 +0800
\nReceived: (qmail 29635 invoked by uid 80); 3 Sep 2004 11:23:12 -0000<\/p>\nReceived: from chinaunix ([61.135.136.123])
\nby domain (8.13.1\/8.13.1) with SMTP id i83BcPXZ012844
\nfor <my_email@domain>; Fri, 3 Sep 2004 19:38:27 +0800
\nReceived: (qmail 30479 invoked by uid 80); 3 Sep 2004 11:38:12 -0000<\/p>\n Received: from chinaunix ([61.135.136.123])
\nby domain (8.13.1\/8.13.1) with SMTP id i83HY8iR013736
\nfor <my_email@domain>; Sat, 4 Sep 2004 01:34:10 +0800
\nReceived: (qmail 48488 invoked by uid 80); 3 Sep 2004 17:33:55 -0000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4f60\u6703\u767c\u73fe, Received \u6b04\u4f4d,\u5728\u6211\u6536\u5230\u6642,\u548c CU \u767c\u51fa\u6642,\u5dee\u4e86\u7d04 14~15 \u79d2,\u9019\u4e2d\u9593\u4e3b\u8981\u5373\u662f\u56e0\u70ba\u6c92
\n\u6709\u53cd\u89e3\u6240\u81f4,\u540c\u6642\u6211\u627e\u4e86\u4e00\u500b\u6709\u53cd\u89e3\u7684,\u540c\u6a23\u7528 qmail \u7684 sample \u5982\u4e0b:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\nReceived: from dragon.xxx.net (dragon.xxx.net [202.145.xxx.193])
\nby mydomain (8.13.1\/8.13.1) with SMTP id i828lXoU006975
\nfor <my_email@mydomain>; Thu, 2 Sep 2004 16:47:33 +0800
\nReceived: (qmail 22562 invoked from network); 2 Sep 2004 08:47:30 -0000
\nReceived: from gate.noc.xxx.net (HELO jj) ([202.145.xxx.34]) (envelope-sender <xxx@ttn.xxx.tw>)
\nby 0 (qmail-ldap-1.03) with SMTP
\nfor <my_email@mydomain>; 2 Sep 2004 08:47:30 -0000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u4e00\u500b\u5dee3\u79d2,\u4e00\u500b\u5dee15\u79d2\u5de6\u53f3(\u7576\u7136\u6709\u53ef\u80fd\u662f\u6642\u9593\u5dee\u7684\u554f\u984c,\u6211\u5011 Server \u90fd\u6703\u8dd1 ntp,\u76f8\u4fe1\u50cf CU \u9019
\n\u7a2e\u5927\u7ad9\u4e5f\u6703\u8dd1 ntp,\u81f3\u65bc\u4e0b\u9762\u7684 sample \u6709\u7121\u6211\u5c31\u4e0d\u77e5\u4e86),\u6240\u4ee5\u6642\u9593\u4e0a\u4f86\u8aaa\u61c9\u90fd\u662f\u540c\u6b65\u7684.
\n(\u82e5\u4f60\u8a8d\u70ba\u662f\u8def\u9014\u592a\u9060,\u90a3\u5c31\u4e0d\u53ca\u683c\u4e86)<\/p>\n \u6240\u4ee5,\u4f60\u82e5\u9084\u6709\u8dd1\u4ec0\u9ebc Mail Gateway,\u6216 Smart Relay,\u57fa\u672c\u4f60\u7d93\u904e\u7684\u9ede\u6108\u591a,\u6642\u9593\u5dee\u8ddd\u5c31\u6703\u6108\u5927
\nCU \u7684\u4f8b\u5b50,15 \u79d2\u9084\u5728\u53ef\u63a5\u53d7\u7684\u7bc4\u570d\u5167.
\n\u8a3b1: \u82e5\u8981\u7e2e\u77ed\u9019 15 \u79d2,\u53ef\u4ee5\u5728\u81ea\u5df1\u7684 \/etc\/hosts \u5c07 CU \u7d66\u6307\u51fa\u4f86,\u6c92\u8a66\u904e,\u7406\u8ad6\u61c9\u53ef\u884c
\n\u8a3b2: \u82e5\u4f60\u9001\u4e86\u4fe1,\u4f46\u8981\u534a\u5929\u4e00\u5929\u624d\u5230,\u90a3\u5927\u591a\u4e8b DNS delegation \u7684\u554f\u984c\u70ba\u4e3b<\/p>\n 5.\u53cd\u89e3\u5982\u4f55\u6388\u6b0a
\n\u6211\u60f3\u672c\u7bc0\u624d\u662f\u91cd\u9ede,\u6211\u5011\u5c31\u4ee5 pku.edu.cn \u90a3\u500b sample \u70ba\u4f8b\u597d\u4e86,105.162.in-addr.arpa.
\n\u7531\u65bc\u9019\u662f\u6574\u500b Class B \u7684\u898f\u6a21,\u6240\u4ee5\u4ed6\u8981\u505a\u6388\u6b0a\u7684\u8a71,\u4ee5 C \u70ba\u55ae\u4f4d\u662f\u5f88\u7c21\u55ae\u7684,\u548c\u6b63\u89e3\u7684\u601d\u8003
\n\u662f\u4e00\u6a23\u7684,<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n$TTL=86400
\n$ORIGIN 105.162.in-addr.arpa.
\n105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a0ns.PKU.EDU.CN. hostmaster.PKU.EDU.CN.
\n(2004090602
\n3600
\n900
\n604800
\n86400)<\/p>\nIN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 dns.EDU.CN.
\nIN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns2.cuhk.hk.
\nIN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 pkuns.PKU.EDU.CN.
\nIN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 sun1000e.PKU.EDU.CN.
\nIN\u00a0 \u00a0 \u00a0 NS\u00a0 \u00a0 \u00a0 ns.PKU.EDU.CN.<\/p>\n 0\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\n0\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\n1\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.ee.pku.edu.cn.
\n1\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.ee.pku.edu.cn.
\n2\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.gg.pku.edu.cn.
\n2\u00a0 \u00a0IN\u00a0 \u00a0NS\u00a0 \u00a0ns1.gg.pku.edu.cn.
\n…<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n 5.1 \u6eff\u4e00\u500b Class C<\/p>\n \u6240\u4ee5,\u53ef\u4ee5\u8b93 cc \u4e00\u500b\u7cfb\u6240\u6709\u4e00\u500b Class C (255 \u500b IP) \u7684\u6388\u6b0a,\u6b64\u6642 cc \u7cfb\u5728\u67b6 DNS \u6642\u5c31\u8981\u6709\u5169\u90e8<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n$TTL=86400
\n0.105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a0ns1.cc.PKU.EDU.CN. hostmaster.PKU.EDU.CN.
\n(2004090602
\n3600
\n900
\n604800
\n86400)
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns2.cc.pku.edu.cn.
\n$ORIGIN 0.105.162.in-addr.arpa.
\n1\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0ns1.cc.pku.edu.cn.
\n2\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0ns2.cc.pku.edu.cn.
\n3\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0pc3.cc.pku.edu.cn.
\n…
\n254\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0pc254.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u76ee\u524d\u70ba\u6b62\u6211\u76f8\u4fe1\u5404\u4f4d\u90fd\u80fd\u9ad4\u6703,\u5982\u679c\u4e0d\u80fd\u9ad4\u6703\u8acb\u5148\u5c07\u6b63\u89e3\u5f04\u719f,\u5f04\u61c2,\u4f60\u5c31\u6703\u4e86\u89e3.<\/p>\n \u4e0a\u9762\u9019\u6a23\u7684\u8a2d\u6cd5,\u57fa\u672c\u4e0a\u53ef\u80fd\u5c0d\u7ba1\u7406\u9019\u90e8\u4e3b\u6a5f\u7684\u4eba\u800c\u8a00\u592a\u91cd\u8986,\u6240\u4ee5 BIND 9 \u6642\u5c31\u52a0\u4e86\u4e00\u500b
\n$GENERATE \u7684\u529f\u80fd\u8b8a\u6578<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n;SOA NS \u5982\u4e0a\u4f8b
\n$ORIGIN 0.105.162.in-addr.arpa.
\n$GENERATE 3-254 $ PTR pc$.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5176\u8aaa\u660e\u4e86 $ \u662f\u7531 3 \u81f3 254 \u7d44\u6210,\u8981\u64f4\u5c55\u70ba 252 (254-3+1=252) \u884c(\u4f60\u5c07 $=3,$=4 \u4ee3\u9032\u53bb
\n\u5c31\u662f\u4e86,IN \u4e0d\u7528\u5beb)<\/p>\n 5.2 \u4e0d\u6eff\u4e00\u500b Class C<\/p>\n \u597d\u4e86,\u4ee5\u4e0a\u90fd\u662f\u6a19\u6e96\u7684\u72c0\u6cc1,\u4f46\u662f\u73fe\u5728\u8ab0\u6709 Class C \u5462 !?
\n\u4f8b\u5982, cc \u7cfb\u6240\u4e0b\u9762\u9084\u6709\u56db\u500b\u55ae\u4f4d(ex:64,32,32,128 \u500b IP \u5206\u914d\u597d\u4e86,cc \u672c\u8eab\u662f\u7b2c\u4e00\u500b), cc \u7cfb
\n\u6240\u8981\u5982\u4f55\u6388\u6b0a\u51fa\u53bb\u5462 !?<\/p>\n \u6700\u7c21\u55ae\u7684\u65b9\u6cd5\u5c31\u662f(\u4e0d\u77e5\u5927\u5bb6\u662f\u5426\u61c2 $ORIGIN \u610f\u601d,\u5c31\u662fFQDN\u6700\u5f8c\u82e5\u6c92\u6709 . \u8981\u88dc\u9019\u500b\u5b57) \u76f4\u63a5 NS
\n\u518d\u6388\u6b0a\u4e0b\u53bb,\u4f46\u9019\u4e5f\u662f\u6700\u4e0d\u7d93\u6fdf\u7684\u65b9\u6cd5:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n$TTL=86400
\n0.105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a0ns1.cc.PKU.EDU.CN. hostmaster.cc.PKU.EDU.CN.
\n(2004090602
\n3600
\n900
\n604800
\n86400)
\n$ORIGIN 0.105.162.in-addr.arpa.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns2.cc.pku.edu.cn.
\n$GENERATE 3-63\u00a0 \u00a0 $ PTR pc$.cc.pku.edu.cn.
\n$GENERATE 64-95\u00a0 \u00a0$ NS ns1.unit2.cc.pku.edu.cn.
\n$GENERATE 64-95\u00a0 \u00a0$ NS ns2.unit2.cc.pku.edu.cn.
\n$GENERATE 96-127\u00a0 $ NS ns1.unit3.cc.pku.edu.cn.
\n$GENERATE 96-127\u00a0 $ NS ns2.unit3.cc.pku.edu.cn.
\n$GENERATE 128-254 $ NS ns1.unit4.cc.pku.edu.cn.
\n$GENERATE 128-254 $ NS ns2.unit4.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n$GENERATE \u529f\u80fd\u81ea\u5df1\u591a\u9ad4\u6703\u5c31\u53ef\u4ee5\u5f88\u5feb\u4e0a\u624b\u4e86,\u800c\u9019\u500b\u6642\u5019, ns1.unit2.cc.pku.edu.cn \u5c31\u5f97\u8981
\n\u628a zone \u5efa\u51fa\u4f86\u4e86,\u9019\u500b zone \u8981\u5beb\u6eff\u6574\u500b IP,<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n#\/etc\/named.conf \u4e2d\u7684\u5167\u5bb9
\n….
\nzone “64.0.105.162.in-addr.arpa” {type master;file “64.ggyy_ip_zone”;};
\nzone “65.0.105.162.in-addr.arpa” {type master;file “65.ggyy_ip_zone”;};
\nzone “66.0.105.162.in-addr.arpa” {type master;file “66.ggyy_ip_zone”;};
\nzone “67.0.105.162.in-addr.arpa” {type master;file “67.ggyy_ip_zone”;};
\n….<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u7136\u5f8c\u90a3\u500b zone file \u5167\u90fd\u53ea\u6709\u4e00\u884c PTR \u8cc7\u6599,\u56e0\u70ba\u662f\u5c07 IP (4 octets) \u6307\u4e86\u904e\u4f86:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n$TTL=86400
\n@ 86400 IN\u00a0 SOA ns1.unit2.cc.PKU.EDU.CN. hostmaster.unit2.cc.PKU.EDU.CN.
\n(2004090602
\n3600
\n900
\n604800
\n86400)
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns2.cc.pku.edu.cn.
\n@\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0pc64.unit2.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u90a3\u4e0d\u5c31\u760b\u4e86~\u62ff\u5230 128 \u500b IP \u8981\u8a2d 128 \u6b21 zone , \u53ca\u5efa 128 \u500b zone file ..
\n\u7684\u78ba\u662f\u9019\u6a23,\u5982\u679c\u6709 128 \u500b IP \u4ed6\u4e5f\u7518\u9858,\u4e14\u9019\u7a2e\u65b9\u6cd5\u9084\u6709\u4e0d\u5c11\u4eba\u7528.\u800c\u5f88\u591a\u4eba\u5728
\n\u9019\u7a2e\u60c5\u6cc1\u4e0b,\u6703\u4e0d\u660e\u6240\u4ee5,\u53cd\u800c\u8a2d\u6210\u4e00\u500b C (255 \u500b IP ) \u7684\u53cd\u89e3:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n#ns1 of unit4 \u5728 \/etc\/named.conf \u4e2d\u5beb
\nzone “0.105.162.in-addr.arpa” ;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5728 zone file \u4e2d\u53ea\u5beb\u81ea\u5df1\u90a3\u4e00\u6bb5 128-254,\u9019\u4e5f\u662f\u4e0d\u5c0d\u7684,\u56e0\u70ba\u7576\u4ed6\u78b0\u5230\u53e6\u4e00\u534a\u6642(0-127),
\n\u4ed6\u5c31\u6703\u89e3\u4e0d\u51fa\u4f86,\u4e14\u4e0a\u5c64\u7684 NS \u6307\u5411\u662f [128-254].0.105.162.in-addr.arpa \u5171 128 \u500b
\nNS,\u4f60\u7528\u6bd4\u4ed6\u5927\u7684 NS \u53bb\u63a5\u662f\u6703\u51fa\u932f\u7684(\u60f3\u60f3,\u4f60\u6709\u4e00\u500b domain:xxx.com.cn,\u90a3\u4f60\u7684 zone
\n\u4f55\u4e0d\u8a2d\u6210 cn \u5c31\u597d\u6216 com.cn ,\u4e0d\u51fa\u554f\u984c\u624d\u602a\u54e9),dns log \u6703\u51fa\u73fe
\n0.105.162.in-addr.arpa >=1.0.105.162.in-addr.arpa \u9019\u7a2e bad referral \u8a0a\u606f,\u76f8\u4fe1
\n\u6709\u7d93\u9a57\u7684\u4eba\u4e00\u5b9a\u898b\u904e.<\/p>\n 5.3 \u4e0d\u6eff\u4e00\u500b Class C \u6a19\u6e96\u89e3\u6cd5<\/p>\n \u6240\u4ee5,\u7528\u4e00\u500b IP \u53bb\u6307 NS \u6388\u6b0a\u662f\u4e0d\u7d93\u6fdf\u7684\u4f5c\u6cd5,\u6b63\u78ba\u7684\u505a\u6cd5\u662f\u5728 Class C
\n(0.105.162.in-addr.arpa) \u9019\u4e00\u5c64\u4ee5 CNAME \u53bb\u5b9a\u7fa9,\u8a73\u60c5\u53ef\u898b RFC2317
\nhttp:\/\/www.ietf.org\/rfc\/rfc2317<\/a><\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n;\u5728 ns1.cc.pku.edu.cn \u4e0a\u7684 0.105.162.in-addr.arpa
\n$TTL=86400
\n0.105.162.in-addr.arpa.\u00a0 \u00a086400\u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 SOA\u00a0 \u00a0 \u00a0ns1.cc.PKU.EDU.CN. hostmaster.cc.PKU.EDU.CN.
\n(2004090602
\n3600
\n900
\n604800
\n86400)
\n$ORIGIN 0.105.162.in-addr.arpa.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns1.cc.pku.edu.cn.
\nIN\u00a0 \u00a0NS\u00a0 \u00a0ns2.cc.pku.edu.cn.
\n$GENERATE 3-63\u00a0 \u00a0 $ PTR pc$.cc.pku.edu.cn.
\n$GENERATE 64-95\u00a0 \u00a0$ CNAME pc$.unit2.cc.pku.edu.cn.
\n$GENERATE 96-127\u00a0 $ CNAME pc$.unit3.cc.pku.edu.cn.
\n$GENERATE 128-254 $ CNAME pc$.unit4.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u4ee5\u4e0a\u8acb\u60a8\u5148\u5145\u4efd\u7406\u89e3 $GENERATE \u7684\u529f\u80fd,\u8981\u5230\u7528\u770b\u7684\u4e5f\u770b\u7684\u51fa\u4f86\u7684\u7a0b\u5ea6,\u4e14\u4e0d\u7528\u5beb
\n\u5169\u6b21(\u539f\u4f86\u5beb\u5169\u6b21\u662f\u56e0\u70ba\u4e00\u500b domain \u4e00\u5b9a\u8981\u6709\u5169\u90e8\u4ee5\u4e0a\u7684 NameServer),\u56e0\u70ba\u5168\u90e8
\n\u90fd\u6703\u8f49\u5230\u6b63\u89e3\u6a94\u53bb<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n;$GENERATE 128-254 $ CNAME pc$.unit4.cc.pku.edu.cn. \u7684\u64f4\u5c55
\n128\u00a0 \u00a0IN\u00a0 \u00a0CNAME\u00a0 \u00a0pc128.unit4.cc.pku.edu.cn.
\n129\u00a0 \u00a0IN\u00a0 \u00a0CNAME\u00a0 \u00a0pc129.unit4.cc.pku.edu.cn.
\n130\u00a0 \u00a0IN\u00a0 \u00a0CNAME\u00a0 \u00a0pc130.unit4.cc.pku.edu.cn.
\n131\u00a0 \u00a0IN\u00a0 \u00a0CNAME\u00a0 \u00a0pc131.unit4.cc.pku.edu.cn.
\n…
\n254\u00a0 \u00a0IN\u00a0 \u00a0CNAME\u00a0 \u00a0pc254.unit4.cc.pku.edu.cn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u9019\u88cf\u4e00\u5b9a\u6709\u4eba\u72af\u7591,\u53cd\u89e3\u6a94\u53ef\u4ee5\u7528 CNAME \u55ce ? \u8ab0\u8aaa\u4e0d\u884c\u7684\u5440,\u5c31\u50cf MX \u53ef\u4e0d\u53ef\u4ee5\u662f\u63a5 IP
\n\u4e00\u6a23,\u6b63\u89e3\u6a94\u88cf\u4e5f\u662f\u53ef\u4ee5\u653e PTR \u7684,\u91cd\u9ede\u53ea\u5728,\u4ed6\u5011\u90fd\u662f DNS \u7684 zone,\u6b63\u89e3\/\u53cd\u89e3 \u53ea\u662f\u4eba
\n\u5011\u5340\u5206\u4e0a\u7684\u5dee\u5225\u800c\u4ee5:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\n;\u539f\u4f86 unit4.cc.pku.edu.tw zone,NS SOA \u7b49\u4e0d\u5217
\n$ORIGIN unit4.cc.pku.edu.tw.
\n@\u00a0 \u00a0IN\u00a0 \u00a0MX\u00a0 \u00a0mail
\nmail\u00a0 \u00a0IN\u00a0 \u00a0A\u00a0 \u00a0162.105.0.143
\nwww\u00a0 \u00a0IN\u00a0 \u00a0A\u00a0 \u00a0162.105.0.133
\n….
\n;\u4ee5\u4e0b\u88dc\u4e0a
\n$GENERATE 128-254 pc$\u00a0 \u00a0PTR\u00a0 \u00a0pc$<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u597d\u4e86,\u9019\u6a23\u5c31\u53ef\u4ee5\u4e86,\u7576\u4f60 dig -x 162.105.0.143 \u6642,\u5c31\u6703\u51fa\u73fe\u89e3\u5230 CNAME (\u53c3\u95b1\u4e0a\u9762),
\n\u63db\u5230 CNAME \u5f8c\u6703\u67e5\u539f\u4f86\u7684 FQDN,\u5c31\u6703\u627e\u5230 pc143.unit4.cc.pku.edu.cn.
\n\u7528 $GENERATE \u53ea\u662f\u9069\u7528\u6709\u898f\u5247\u7684\u8b8a\u5316,\u5728\u672c\u4f8b\u4e2d,\u4e00\u822c\u6703\u5efa\u8b70\u4f60\u4f9d\u9806\u5e8f\u6392\u5217,\u4ee5\u4fbf\u65e5\u5f8c\u7ba1\u7406:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\nwww\u00a0 \u00a0IN\u00a0 \u00a0A\u00a0 \u00a0162.105.0.133
\npc133\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0www
\n;…134,135….
\nmail\u00a0 \u00a0IN\u00a0 \u00a0A\u00a0 \u00a0162.105.0.143
\npc143\u00a0 \u00a0IN\u00a0 \u00a0PTR\u00a0 \u00a0mail
\n;…<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u6240\u4ee5 pc133 \u7b49\u9019\u7a2e\u540d\u7a31,\u7d14\u7cb9\u5c31\u6703\u8b8a\u6210\u4e00\u7a2e “\u63a5\u53d6” \u7684\u72c0\u6cc1,\u4e3b\u8981\u662f\u8981 “\u4e32\u9023” \u8d77\u4f86.
\n\u5be6\u4f8b:<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n| \n[root@twnic joanna]# dig @168.95.1.1 -x 210.17.9.228<\/p>\n ; <<>> DiG 9.2.1 <<>> @168.95.1.1 -x 210.17.9.228
\n;; global options:\u00a0 printcmd
\n;; Got answer:
\n;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55880
\n;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2<\/p>\n ;; QUESTION SECTION: \u627e PTR
\n;228.9.17.210.in-addr.arpa.\u00a0 \u00a0 \u00a0IN\u00a0 \u00a0 \u00a0 PTR<\/p>\n ;; ANSWER SECTION: \u627e\u5230 CNAME, \u518d\u5c0d\u61c9\u6210 PTR
\n228.9.17.210.in-addr.arpa. 3600 IN\u00a0 \u00a0 \u00a0 CNAME\u00a0 \u00a0228.sub224-255.9.17.210.in-addr.arpa.
\narpa.
\n228.sub224-255.9.17.210.in-addr.arpa. 77747 IN PTR www.twnic.net.tw<\/a>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nsyslog \u4e2d\u6703\u51fa\u73fe\u50cf(\u6709\u7684 OS \u7248\u672c\u4e0d\u6703\u51fa\u73fe):<\/p>\n \n\n\n\u4ee3\u7801:<\/strong><\/td>\n<\/tr>\n\n\nSep 6 10:40:11 SIP syslog: gethostby*.getanswer: asked for “228.9.17.210.in-addr.arpa IN PTR” , got type “CNAME”
\nSep 6 10:40:11 SIP syslog: gethostby*.getanswer: asked for “228.9.17.210.in-addr.arpa”, got “228.sub224-255.9.17.210.in-addr.arpa.”<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u5927\u6982\u5c31\u9019\u6a23,\u4f60\u6703\u767c\u73fe,\u5230\u5f8c\u9762\u8b1b CNAME \u7684\u5730\u65b9\u6709\u9ede\u96e3\u7406\u89e3,\u9019\u662f\u6b63\u5e38\u7684,\u6709\u7a0b\u5ea6\u7684\u4eba\u7528\u529b\u770b
\n\u5927\u6982\u53ef\u4ee5\u770b\u5f97\u61c2,\u82e5\u666e\u901a\u7684\u8a71,\u5be6\u4f5c\u5373\u53ef\u77e5\u9053,\u82e5\u9023\u6b63\u89e3\u90fd\u4e0d\u61c2\u5927\u6982\u5f88\u96e3\u9ad4\u6703.
\nDNS \u9019\u7a2e\u6771\u897f\u82e5\u4f60\u4ee5\u70ba\u7528\u770b\u7684\u5c31\u5168\u770b\u7684\u61c2\u8868\u793a\u4f60\u592a\u770b\u8f15\u5b83\u4e86.<\/p>\n","protected":false},"excerpt":{"rendered":" \u53cd\u89e3\u8207\u6b63\u89e3\u672c\u4f86\u662f\u5206\u958b\u7684… \u4f60\u4e0d\u5fc5\u8981\u6c42\u6b63\u53cd\u5169\u89e3\u4e4b\u4e00\u81f4\u6027, \u53ea\u662f, \u82e5\u67e5\u8a62\u7684\u7a0b\u5f0f\u82e5\u767c\u73fe\u4e0d\u4e00\u81f4(PARA […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3508],"tags":[1289,2920,3612,2630],"class_list":{"0":"post-3475","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-dnssec-and-dns-","7":"tag-dns","8":"tag-ip","10":"tag-2630","11":"category-3508-id","12":"post-seq-1","13":"post-parity-odd","14":"meta-position-corners","15":"fix"},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3475"}],"version-history":[{"count":1,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3475\/revisions"}],"predecessor-version":[{"id":3476,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3475\/revisions\/3476"}],"wp:attachment":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |