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primary name server¶õ ÀÚ±â±â°ü µµ¸ÞÀÎ(¿¹¸¦ µé¸é, °æ¿øÀü¹®´ëÀÇ °æ¿ì´Â kyungwon-c.ac.kr) ³»ÀÇ ¿©·¯ È£½ºÆ®µéÀÇ È£½ºÆ®³×ÀÓÀ» ½Å±Ôµî·ÏÇÒ ¼öµµ ÀÖ°í, º¯°æÇÒ ¼öµµ ÀÖ´Â write±ÇÇÑÀÌ ÀÖ´Â ½Ã½ºÅÛÀ» ¸»Çϸç, ÀÚüÀûÀ¸·Î ¿î¿µÇÏ´Â °ÍÀÌ °¡Àå ÀÌ»óÀûÀÔ´Ï´Ù.
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================================================================ ********* Domain main field (Domain Data) ********** 1. (N)ew, (M)odify, (D)elete for domain ... : N 1a. Domain-Name ........................... : KYUNGWON-C.AC.KR 1b. Organization-Name ..................... : Kyung Won College 1c. Hangul-Organization-Name .............. : °æ¿øÀü¹®´ëÇÐ 1d. Organization-Postal ................... : San 65 Pokjong-dong Sujong-gu Song nam-shi Kyonggi-do 1e. Hangul-Organization-Postal ............ : °æ±âµµ ¼º³²½Ã ¼öÁ¤±¸ º¹Á¤µ¿ »ê 65 1f. Zip-Code .............................. : 461-702 1g. Organization-State-Or-Province ........ : kyonggi 1h. Hangul-Organization-State-Or-Province . : °æ±â 1i. Organization-Country-Code ............. : KR 1j. Primary Domain-Name Server ............ : kwcsun.kyungwon-c.ac.kr 1k. Secondary Domain-Name Server .......... : ns.kren.ne.kr ********* inverse field(network data) ********** 4. (N)ew, (M)odify, (D)elete for inverse .. : N 4a. Handle (if Modify or Delete) .......... : 4b. Network-Name .......................... : kwc-net 4c. Organization-Name ..................... : Kyung Won College 4d. Hangul-Organization-Name .............. : °æ¿øÀü¹®´ëÇÐ 4e. Organization-Postal ................... : San 65 Pokjong-dong Sujong-gu Song nam-shi Kyonggi-do 4f. Hangul-Organization-Postal ............ : °æ±âµµ ¼º³²½Ã ¼öÁ¤±¸ º¹Á¤µ¿ »ê 65 4g. Zip-Code .............................. : 461-702 4h. Organization-State-Or-Province ........ : kyonggi 4i. Hangul-Organization-State-Or-Province . : °æ±â 4j. Organization-Country-Code ............. : KR 4k. Connect-ISP ........................... : KREN 4l. IP-Network ............................ : 203.232.168.0 4l. IP-Network ............................ : 203.232.169.0 4l. IP-Network ............................ : 203.232.170.0 4l. IP-Network ............................ : 203.232.171.0 4l. IP-Network ............................ : 203.234.40.0 4m. Connect-Speed ......................... : T1 4n. Default-Route ......................... : 203.242.9.13 4o. Domain-Name ........................... : KYUNGWON-C.AC.KR ================================================================= <<< ´ÙÀ½¿¡ fileµéÀº ³×ÀÓ¼¹ö¼ÂÆÿ¡ ÇÊ¿äÇÑ fileÀ̸ç, fileÀÇ ½ÃÀÛ°ú ³¡À» ±¸ºÐÇϱ⠽±°Ô Çϱâ À§ÇØ @@@@@@@@@@·Î Ç¥½ÃµË´Ï´Ù. file³»¿ë Áß ';'·Î ½ÃÀ۵Ǵ ¶óÀÎÀº commentÀ̸ç, °¢ ±â°ü¿¡¼ ¼öÁ¤ÇØ¾ß ÇÒ ºÎºÐÀº ^^^^^^^^^Ç¥½Ã¿Í ÇÔ²² ¿·¿¡ ¼³¸íÀÌ µÇ¾îÀÖ½À´Ï´Ù.>>> ÁÖÀÇ : ´ÙÀ½ÀÛ¾÷Àº ¸ðµÎ superuser±ÇÇÑÀ¸·Î ÇÕ´Ï´Ù. 1. /etc/named.boot ¸¦ ÀÛ¼ºÇÕ´Ï´Ù. @@@@@@@@@@ ; /etc/named.boot ; directory /home/DNS ; ^^^^^^^^^ DNS°ü·Ã fileµéÀÌ À§Ä¡ÇÏ°Ô µÉ directory domain kyungwon-c.ac.kr ; ^^^^^^^^^^^^^^^^ ÀÚ±â±â°üÀÇ µµ¸ÞÀγ×ÀÓ ÁöÁ¤ ; ; Type Domain Host / File Backup file ; cache . root.cache ; primary kyungwon-c.ac.kr kyungwon-c.zone ^^^^^^^^^^^^^^^^ÀÚ±â±â°üµµ¸ÞÀÎ ^^^^^^^^^^^^^^^ hostµéÀ» µî·ÏÇÒ fileÀ̸§ ; primary 0.0.127.in-addr.arpa localhost.rev primary 40.234.203.in-addr.arpa 203.234.40.rev ; ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^ µî·ÏÇÒ fileÀ̸§ ; ÇÒ´ç¹ÞÀº C class IP¸¦ ¿ªÀ¸·Î primary 168.232.203.in-addr.arpa 203.232.168.rev primary 169.232.203.in-addr.arpa 203.232.169.rev primary 170.232.203.in-addr.arpa 203.232.170.rev primary 171.232.203.in-addr.arpa 203.232.171.rev @@@@@@@@@@ 2. /etc/named.boot¿¡¼ ÁöÁ¤ÇÑ directory(/home/DNS)¿¡ ´ÙÀ½ÀÇ 8°¡Áö fileµéÀ» ÀÛ¼ºÇÕ´Ï´Ù. root.cache -> ¼öÁ¤ ÇÊ¿ä¾øÀÌ »ç¿ë localhost.rev -> óÀ½ ¼ÂÆýø¸ ¼öÁ¤ kyungwon-c.zone -> È£½ºÆ® Ãß°¡½Ã ¸¶´Ù º¯°æ 203.234.40.rev -> È£½ºÆ® Ãß°¡½Ã ¸¶´Ù º¯°æ 203.232.168.rev -> " 203.232.169.rev -> " 203.232.170.rev -> " 203.232.171.rev -> " *** À§ÀÇ fileµéÀº ftp://ftp.kren.ne.kr/pub/KREN/DNS/sample/¿¡¼ download ¹ÞÀ¸½Ç ¼öµµ ÀÖÀ¸¸ç, ???.rev filÀÎ °æ¿ì´Â 203.234.40.rev¸¦ copyÇÏ¿© Àû´çÈ÷ ¼öÁ¤ÇÏ¸é µË´Ï´Ù. (°èÁ¤Àº anonymous) ¿ì¼±, root.cache¸¦ ¸¸µå¼¼¿ä. @@@@@@@@@@ ;/user2/etc/domain/root.cache 99999999 IN NS ns.krnic.net. 99999999 IN NS ns.internic.net. 99999999 IN NS aos.arl.army.mil. 99999999 IN NS kava.nisc.sri.com. 99999999 IN NS c.nyser.net. 99999999 IN NS terp.umd.edu. 99999999 IN NS ns.nasa.gov. 99999999 IN NS nic.nordu.net. 99999999 IN NS ns.nic.ddn.mil. ns.krnic.net. 99999999 IN A 202.30.64.21 ns.internic.net. 99999999 IN A 198.41.0.4 aos.arl.army.mil. 99999999 IN A 128.63.4.82 99999999 IN A 192.5.25.82 kava.nisc.sri.com. 99999999 IN A 192.33.33.24 c.nyser.net. 99999999 IN A 192.33.4.12 terp.umd.edu. 99999999 IN A 128.8.10.90 ns.nasa.gov. 99999999 IN A 128.102.16.10 99999999 IN A 192.52.195.10 nic.nordu.net. 99999999 IN A 192.36.148.17 ns.nic.ddn.mil. 99999999 IN A 192.112.36.4 @@@@@@@@@@ ´ÙÀ½Àº localhost.rev¸¦ ¼öÁ¤ÇÕ´Ï´Ù. @@@@@@@@@@ ;localhost.rev @ IN SOA kwcsun.kyungwon-c.ac.kr. root.kwcsun.kyungwon-c.ac.kr. ( ; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ÀÚ½ÅÀÇ ³×ÀÓ¼¹ö ÁöÁ¤ 96040101 ;Serial ; ^^^^^^^^Çش糯¥¿¡ ¸Â°Ô ¼öÁ¤(96³â4¿ù1ÀϼöÁ¤ÇÑ °æ¿ì ; °°Àº ³¯¿¡ Çѹø ´õ ¼öÁ¤ÇÏ¿´À¸¸é, 96040102°¡ µÊ) 360000 ;Refresh 360000 ;Retry 360000 ;Expire 129600 ) ;Minimum ; IN NS kwcsun.kyungwon-c.ac.kr. ; ^^^^^^^^^^^^^^^^^^^^^^^^ ; ³×ÀÓ¼¹ö ÁöÁ¤ 1 IN PTR localhost. @@@@@@@@@@ ´ÙÀ½ ´Ü°è´Â, kyungwon-c.zone fileÀ» ¼öÁ¤ÇÕ´Ï´Ù. @@@@@@@@@@ ;kyungwon-c.zone @ IN SOA kwcsun.kyungwon-c.ac.kr. root.kwcsun.kyungwon-c.ac.kr. ( ; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ÀÚ½ÅÀÇ ³×ÀÓ¼¹ö ÁöÁ¤ 96040101 ;Serial ; ^^^^^^^^ Çش糯¥¿¡ ¸Â°Ô ¼öÁ¤ 10800 ;Refresh 3600 ;Retry 86400 ;Expire 32400) ;Minimum ; IN NS kwcsun.kyungwon-c.ac.kr. ; ^^^^^^^^^^^^^^^^^^^^^^^^ ÀÚ½ÅÀÇ ³×ÀÓ¼¹ö ÁöÁ¤ IN NS ns.kren.ne.kr. ; ^^^^^^^^^^^^^^ ¼¼ÄÁ´õ¸® ³×ÀÓ¼¹ö ÁöÁ¤ ; ; $ORIGIN kyungwon-c.ac.kr. ; ^^^^^^^^^^^^^^^^ ÀÚ½ÅÀÇ µµ¸ÞÀγ×ÀÓ ÁöÁ¤ kwcsun IN A 203.234.40.20 ;^^^^^È£½ºÆ® ³×ÀÓ µî·Ï ^^^^^^^^^^^^^ È£½ºÆ®ÀÇ IP addressÁöÁ¤ @@@@@@@@@@ ´ÙÀ½Àº 203.234.40.rev¸¦ ¼öÁ¤ÇÕ´Ï´Ù. @@@@@@@@@@ ;203.234.40.rev @ IN SOA kwcsun.kyungwon-c.ac.kr. root.kwcsun.kyungwon-c.ac.kr. ( ; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 96040101 ; Serial ; ^^^^^^^^ 10800 ; Refresh 3600 ; Retry 432000 ; Expire 86400) ; Minimum IN NS kwcsun.kyungwon-c.ac.kr. ; ^^^^^^^^^^^^^^^^^^^^^^^ ; $ORIGIN 40.234.203.in-addr.arpa. ; ^^^^^^^^^^^ ÇÒ´ç¹ÞÀº C class IP address¸¦ ¿ª¼øÀ¸·Î ¾¸ 20 IN PTR kwcsun.kyungwon-c.ac.kr. ;^^ ^^^^^^^^^^^^^^^^^^^^^^^ È£½ºÆ®³×ÀÓ+µµ¸ÞÀγ×ÀÓ ;À§ÀÇ °æ¿ì kwcsun.kyungwon-c.ac.krÀÇ IP address´Â 203.234.40.20ÀÓ @@@@@@@@@@ ÁÖÀÇ : /etc/named.boot¿¡ ¸í½ÃµÈ 4°³ÀÇ file-name°ú ½ÇÁ¦·Î ÀÛ¼ºÇÑ file-nameÀÌ ÀÏÄ¡µÇµµ·Ï ÇÕ´Ï´Ù. <<< fileÀÌ ´Ù ¼öÁ¤µÈ ÈÄ¿¡ DNS daemonÀ» ¶ç¿ì¸é µË´Ï´Ù.>>> <<< ³×ÀÓ¼¹ö ¼ÂÆÃÀÌ Á¦´ë·Î µÇ¾ú´ÂÁö È®ÀÎÇÏ´Â ¹æ¹ýÀº nslookupÀ̶ó´Â command¸¦ »ç¿ëÇÕ´Ï´Ù.>>> kwcsun# nslookup Default Server: kwcsun.kyungwon-c.ac.kr Address: 203.234.40.20 > kwcsun.kyungwon-c.ac.kr Server: kwcsun.kyungwon-c.ac.kr Address: 203.234.40.20 Name: kwcsun.kyungwon-c.ac.kr Address: 203.234.40.20 ; -----> O.K > set type=ptr > 20.40.234.203.in-addr.arpa Server: kwcsun.kyungwon-c.ac.kr Address: 203.234.40.20 *** kwcsun.kyungwon-c.ac.kr can't find 20.40.234.203.in-addr.arpa: Server failed ; ---> ¸¸¾à ÀÌ·¸°Ô ³ª¿À¸é ¼ÂÆûóÀÇ error°¡ ÀÖ´Â °ÍÀÔ´Ï´Ù.