Applied Mathematics 8
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³«»Ï¹Ô:
* ¤³¤ì¤Þ¤Ç¤ÎÉü½¬ [#q993033c]
¤³¤ì¤Þ¤Ç¤Î¼ø¶È¤ËÄɤ¤ÉÕ¤±¤Æ¤¤¤Ê¤¤¡¤¤â¤·¤¯¤ÏÍý²ò¤¬´°Á´¤Ç¤Ê...
¤½¤³¤Ç¾¯¤·»þ´Ö¤ò¼è¤ê¡¤¤³¤ì¤Þ¤Ç¤ÎÉü½¬¤ä²òÀâ¤ò¹Ô¤¦.
* DNS ¤ÎÍý²ò [#b9f8b40d]
¤µ¤Æ¡¤¤³¤³¤«¤é¤Ï DNS (Domain Name System) ¤Ë¤Ä¤¤¤Æ³Ø½¬¤·...
¤³¤ì¤Þ¤Ç¤Î¼ø¶ÈÆâÍÆ¤È DNS ¤¬¤ï¤«¤ì¤Ð¡¤¥µ¡¼¥ÐÀßÄê¤Î¡Ö¼çÍפÊ...
DNS ¤È¤Ï¥Û¥¹¥È̾(¾ÜºÙ¤Ï¸å½Ò¤¹¤ë)¤È IP address ¤ÎÂбþ¤ò¤Ï...
¥Û¥¹¥È̾¤È¥Í¥Ã¥È¥ï¡¼¥¯¹½Â¤¤ÎÂбþ´Ø·¸¤Ë´Ø¤¹¤ëʬ»¶¥Ç¡¼¥¿¥Ù...
Æüº¢ web ¤ò»È¤Ã¤¿¤ê¤·¤Æ¤¤¤Æ¡¤¤½¤ÎÁ´ÂΤλÅÁȤߤϴû¤Ë¤ª¤è¤½...
°Ê²¼¤Ç¹Ô¤¦¥µ¡¼¥Ð¤ÎÀßÄê¤â¡¤¾ÜºÙÉôʬ¤ò½ü¤±¤Ð¤½¤ó¤Ê¤ËÆñ¤·¤¯...
** ¤½¤â¤½¤â DNS ¤È¤¤¤¦¥Í¥Ã¥È¥ï¡¼¥¯¾å¤Îʬ»¶¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò...
»È¤Ã¤Æ¤¤¤ë¥Þ¥·¥ó¤ò¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤°¤Î¤Ç¤¢¤ì¤Ð¤Þ¤ºÉ¬Í×...
DNS ¤Ï¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Î¥Û¥¹¥È̾¤òÍѤ¤¤Æ¤½¤Î¥Û¥¹¥È¤Ø¥¢¥¯¥»...
µÕ¤Ë¸À¤¨¤Ð¡¤¡Ö¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤¬¤Ê¤±¤ì¤ÐÉÔÍפʤ³¤È¤â¤¢...
¤Þ¤¿¡¤¤½¤ÎÅÅÏÃÄ¢¤Î°ìÉôʬ¤ò¡Ö¼«Á°¤Î¥á¥â¤Ë½ñ¤¤¤Æ¤ª¤¯¡×¤È¤¤...
¤³¤ì¤Ï /etc/hosts ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤Ë¥Û¥¹¥È̾¤È IP Address ...
¤Ê¤ª¡¤/etc/hosts ¤Î¾ðÊó¤È DNS ¤Ø¤ÎÌ䤤¹ç¤ï¤»¤Î¤É¤Á¤é¤òÍ¥...
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï
hosts: files dns
¤È¤Ê¤Ã¤Æ¤ª¤ê¡¤/etc/hosts ¤òÍ¥À褹¤ë¤È¤¤¤¦ÂÅÅö¤ÊÀßÄê¤Ë¤Ê¤Ã...
** ¥Û¥¹¥È¡¤¥É¥á¥¤¥ó [#w0d85a12]
ºåÂç¤Îweb¥µ¡¼¥Ð¤Ï www.osaka-u.ac.jp ¤È¤¤¤¦Ì¾¾Î¤Ç¤¢¤ë¤¬¡¤...
¤Þ¤º¡¤¤³¤ì¤Ï www.osaka-u.ac.jp. ¤ÈºÇ¸å¤Ë¥É¥Ã¥È¤ò¤Ä¤±¤¿É½...
ºÇ¸å¤Î¥É¥Ã¥È¤Ï¡ÖÈó¾ï¤Ë¤·¤Ð¤·¤Ð¡×¾Êά¤µ¤ì¤Æ¤¤¤ë¤À¤±¤Ç¤¢¤ë.
Ä̾ï¥æ¡¼¥¶¤È¤·¤Æ¤Ï¤³¤ì¤Ïµ¤¤Ë¤¹¤ëɬÍפϤʤ¤¤¬¡¤DNS Server ...
¤µ¤Æ¼¡¤Ë¤³¤ÎÃæ¿È¤Ç¤¢¤ë¤¬¡¤¤³¤ì¤Ï osaka-u.ac.jp ¤È¤¤¤¦¥É¥á...
¤µ¤é¤Ë¥É¥á¥¤¥óÉôʬ¤ò¾Ü¤·¤¯²òÀ⤹¤ë¤È¡¤Àµ³Î¤Ë¤Ï¤³¤ì¤Ï .(¥É...
www.osaka-u.ac.jp. ¤ò¿Þ¤Ç½ñ¤¯¤È¼¡¤Î¤è¤¦¤Ë¤Ê¤ë(Îò»ËŪ¤Ë ¤è...
CENTER:&ref(./domain-structure.png);
³Æ³¬ÁؤˤÏÊ£¿ô(¤È¤¤¤¦¤«Èó¾ï¤Ë¿¤¯¤Î)¥É¥á¥¤¥ó¤¬´Þ¤Þ¤ì¤ë¤Î...
CENTER:&ref(./domain-structure-multi.png);
¤Á¤Ê¤ß¤Ë¡¤www.osaka-u.ac.jp ¤Î¤è¤¦¤Ë¡¤¥Û¥¹¥È̾+¥É¥á¥¤¥ó̾...
** DNS ¤ÎÌ䤤¹ç¤ï¤»¤Î¤ª¤ª¤¶¤Ã¤Ñ¤Ê»ÅÁÈ¤ß [#v149259d]
DNS ¤ÎÌ䤤¹ç¤ï¤»¤Ï¸úΨ¤ä°ÂÁ´À¤Î¤¿¤á¤Ë¼Â¤Ï·ë¹½Ê£»¨¤Ê»ÅÁÈ...
¾ï¤ËÂ礶¤Ã¤Ñ¤Ë¸À¤¨¤Ð¡¤³Æ¡¹¤Î³¬ÁؤΥɥᥤ¥ó¤Î¾ðÊó¤ò¼õ¤±»ý...
¤½¤·¤Æ¡¤DNS server ¤Ø¤ÎÌ䤤¹ç¤ï¤»¤È¤¤¤¦¤Î¤Ï¡¤¾å¤Î¥µ¡¼¥Ð¤«...
¤è¤êºÙ¤«¤¤¡¤Àµ³Î¤ÊÏäϸå½Ò¤¹¤ë.
¤³¤Î¤è¤¦¤Ë¡¤¥Ç¡¼¥¿¥Ù¡¼¥¹¤¬³¬Áع½Â¤¤ò¤â¤Ã¤Æʬ»¶¤µ¤ì¤Æ¤¤¤Æ...
** DNS Ì䤤¹ç¤ï¤»¤Î¼ïÎà(Æó¼ïÎढ¤ë) [#q89a5be2]
DNS ¥µ¡¼¥Ð¤Ø¤ÎÌ䤤¹ç¤ï¤»¤Ï¡¤Â礶¤Ã¤Ñ¤Ë¸À¤Ã¤ÆÆó¼ïÎढ¤ë.
ʬ¤«¤ê¤Ë¤¯¤¤¤Î¤Ç¤³¤³¤Ç½ñ¤¤¤Æ¤ª¤³¤¦.
: ºÆµ¢ÅªÌ䤤¹ç¤ï¤» | ´ÝÅꤲŪÌ䤤¹ç¤ï¤». ʹ¤«¤ì¤¿Êý¤Ï¡¤¼«...
: ÈóºÆµ¢ÅªÌ䤤¹ç¤ï¤» | ʹ¤«¤ì¤ëÊý¤ËÉéô¤Î¾¯¤Ê¤¤Ì䤤¹ç¤ï¤»...
DNS ¤Î»ÅÁȤߤ«¤é¤¤¤Ã¤Æ¡¤¡Ö狼°ì¿Í¤ÏºÆµ¢ÅªÌ䤤¹ç¤ï¤»¤ËÅú...
Ä̾ï¤Ï¡¤DNS ³¬ÁؤΤʤë¤Ù¤¯²¼¤Ëµï¤ÆºÆµ¢ÅªÌ䤤¹ç¤ï¤»¤ò½èÍý...
** DNS ¤«¤éÆÀ¤é¤ì¤ë¾ðÊó [#pda45248]
´ðËÜŪ¤Ë¤Ï¡¤DNS ¤Ç(ľÀܤË)ÆÀ¤é¤ì¤ë¾ðÊó¤Ï
| ¥Û¥¹¥È̾¤ò¼ê¤¬¤«¤ê¤È¤·¤¿¾ì¹ç¤Ï | ¤½¤Î¥Û¥¹¥È¤Î IP ¥¢¥É¥ì...
| IP Address ¤ò¼ê¤¬¤«¤ê¤È¤·¤¿¾ì¹ç¤Ï | ¤½¤Î¥Û¥¹¥È̾ |
¤È¤¤¤¦¤³¤È¤Ë¤Ê¤ë.
¤â¤Á¤í¤ó¡¤DNS ¤ËÌ䤤¹ç¤ï¤»¤ë²áÄø¤Ç´ÖÀÜŪ¤Ë¤Ï¤è¤ê¹¤¤¾ðÊó(...
¤³¤³¤Ç¡¤¾å¤Î¡ÖÆÀ¤é¤ì¤ë¾ðÊó¡×¤Ë¤Ä¤¤¤Æ¤â¤¦¾¯¤·¾ðÊó¤òµ¤·¤Æ...
¶ñÂÎŪ¤Ë¤Ï¡¤¼¡¤Î¡Ö¥ì¥³¡¼¥É̾¡×¤Ç¤¢¤ë. ¤³¤ì¤Ï¡¤DNS ¤Ç¤ÎÌä...
| ¥ì¥³¡¼¥É̾ | ²òÀâ |h
| SOA | ¤½¤Î¾ðÊó¤ÎÀÕǤ¸µ¤Î¾ðÊó. Start of Authority. ÀÕǤ...
| A | IP Address |
| AAAA | IP Address(IPv6) |
| NS | ¥Í¡¼¥à¥µ¡¼¥Ð |
| CNAME | ¤½¤Î¥Û¥¹¥È¤ÎÀµ½à̾(¢â¿¿¤Î̾Á°) |
| MX | ¤½¤Î¥¢¥É¥ì¥¹°¸¤Ë¥á¡¼¥ë¤¬Í褿¤é¤É¤Î¥á¡¼¥ë¥µ¡¼¥Ð¤ØÁ÷...
| PTR | ¥Û¥¹¥È̾ |
¤¢¤È¡¤DNS ¤Ë¤Ï»þ¡¹ "IN" ¤È¤¤¤¦¥¡¼¥ï¡¼¥É¤¬½Ð¤Æ¤¯¤ë¤¬¡¤¤³...
** Àµ°ú¤ [#c8d72fa1]
¥Û¥¹¥È̾¤«¤é IP Address ¤ä¾¤Î¾ðÊó¤òÃΤ뤿¤á¤Ë DNS Server...
Àµ°ú¤¤Ç¤¤Ê¤¤¥Û¥¹¥È¤È¤¤¤¦¤Î¤Ï¥¤¥ó¥¿¡¼¥Í¥Ã¥È¾å¤Ç¤Ï(°ì±þ)...
** µÕ°ú¤ [#m4d99afc]
µÕ¤Ë¡¤IP Address ¤«¤é¥Û¥¹¥È̾¤ä¾¤Î¾ðÊó¤òÃÎ¤í¤¦¤È¤¹¤ëÌ䤤...
¤Á¤Ê¤ß¤Ë¡¤µÕ°ú¤¤Ïɬ¤º½ÐÍè¤Ê¤±¤ì¤Ð¤¤¤±¤Ê¤¤¤Ï¤Èµ¬Äꤵ¤ì¤Æ...
¤Ä¤Þ¤ê¡¤µÕ°ú¤½ÐÍè¤Ê¤¤ IP Address ¤¬¤¢¤Ã¤Æ¤â DNS ¤Î¥ë¡¼¥ë...
¤¿¤À¡¤
- ¥Í¥Ã¥È¥ï¡¼¥¯¾å¤Ç¤½¤ì¤Ê¤ê¤Ë¤¤Á¤ó¤È¤·¤¿¥µ¡¼¥ÐÅù¤Ï¤Û¤È¤ó...
- µÕ°ú¤½ÐÍè¤Ê¤¤¥Û¥¹¥È¤ËÂФ·¤Æ¤Ï¢þ¢þ¤Î¥µ¡¼¥Ó¥¹¤ò¤·¤Ê¤¤¡¤¤È...
- Àµ°ú¤¤ÈµÕ°ú¤¤Î·ë²Ì¤¬À°¹ç¤·¤Ê¤¤¤È¤¤¤±¤Ê¤¤¡¤¤È¤¤¤¦¤µ¤é...
- ƱÍͤΥÁ¥§¥Ã¥¯¤ò¥Ñ¥¹¤·¤Ê¤¤¤ÈÆ°¤«¤Ê¤¤¥³¥Þ¥ó¥É¤â¤¢¤ë
¤Ê¤É¤Ê¤É¡¤µÕ°ú¤¤ò¤¤Á¤ó¤ÈÀßÄꤷ¤Ê¤¤¤Èº¤¤ë¾ìÌ̤⤢¤ë¤Î¤Ç...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(1) host [#i92bf37d]
¥µ¡¼¥Ð¤ÎÀßÄê°ÊÁ°¤Ë¡¤DNS ¾ðÊó¤òÃΤëÊýË¡¤ò°ìÈÌŪ¤ËÃΤäƤª...
¤¢¤Þ¤êÃΤé¤ì¤Æ¤¤¤Ê¤¤¤è¤¦¤Ë»×¤¦¤¬¡¤"host" ¥³¥Þ¥ó¥É¤¬Àµ°ú¤...
Î㤨¤Ð
host www.osaka-u.ac.jp
¤È¤¹¤ë¤È(Àµ°ú¤)
www.osaka-u.ac.jp has address 133.1.8.18
¤ÈÅú¤¨ "133.1.8.18" ¤¬Ê֤äƤ¯¤ë¤·,
host 133.1.8.18
¤È¤¹¤ë¤È(µÕ°ú¤)
18.8.1.133.in-addr.arpa domain name pointer www.osaka-u...
¤ÈÅú¤¨ "www.osaka-u.ac.jp." ¤¬Ê֤äƤ¯¤ë((host ¥³¥Þ¥ó¥É¤Ï...
¾åµ¤Î¤è¤¦¤Ë¡¤¥ª¥×¥·¥ç¥ó̵¤·¤À¤È host ¥³¥Þ¥ó¥É¤Ï¤½¤Ã¤±¤Ê...
Î㤨¤Ð¡¤
host -v www.osaka-u.ac.jp
¤È¤¹¤ë¤È, ¼¡¤Î¤è¤¦¤Ê½ÐÎϤ¬ÆÀ¤é¤ì¤ë((·ë²ÌŪ¤Ë A, AAAA, MX ...
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59886
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN A
;; ANSWER SECTION:
www.osaka-u.ac.jp. 250145 IN A 133.1.8...
;; AUTHORITY SECTION:
osaka-u.ac.jp. 250145 IN NS name-se...
osaka-u.ac.jp. 250145 IN NS ns1.ai3...
osaka-u.ac.jp. 250145 IN NS vanilla...
osaka-u.ac.jp. 250145 IN NS ns.osak...
osaka-u.ac.jp. 250145 IN NS vanilla...
;; ADDITIONAL SECTION:
vanilla-ice.gw.osaka-u.ac.jp. 83254 IN A 133.1.1...
vanilla-ice.odins.osaka-u.ac.jp. 83254 IN A 133.1.1...
ns.osaka-u.ac.jp. 83254 IN A 133.1.1...
name-server.suita.odins.osaka-u.ac.jp. 83254 IN A 133.1...
ns1.ai3.net. 103140 IN A 202.249...
Received 266 bytes from 192.168.125.14#53 in 0 ms
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37870
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN AAAA
;; AUTHORITY SECTION:
osaka-u.ac.jp. 1745 IN SOA vanilla...
Received 91 bytes from 192.168.125.14#53 in 0 ms
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30178
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN MX
;; AUTHORITY SECTION:
osaka-u.ac.jp. 1745 IN SOA vanilla...
Received 91 bytes from 192.168.125.14#53 in 0 ms
¤Á¤Ê¤ß¤Ë¡¤DNS Ì䤤¹ç¤ï¤»·ë²Ìɽ¼¨¤ÎÃæ¤Ç¡¤"IN" ¤ÎÁ°¤Ë¤·¤Ð¤·...
¾¤Ë¤â¡¤·ë¹½Â¿Íͤʥª¥×¥·¥ç¥ó¤¬¤¢¤ë¤Î¤Ç¡¤"man host" ¤È¤·¤Æ...
*** ¼Â½¬ [#q4bdba6f]
ŬÅö¤Ê¥Û¥¹¥È̾¤ËÂФ·¤Æ "host -v" ¤ÇÄ´¤Ù¤¿·ë²Ì¤ò¡¤¤³¤ì¤Þ¤Ç...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(2) dig [#je58fe1e]
¶áǯ¤Ç¤Ï¡¤DNS Ì䤤¹ç¤ï¤»¤ò¼ê¤Ç¹Ô¤¦¥³¥Þ¥ó¥É¤È¤·¤Æ¤Ï "dig" ...
»È¤¤Êý¤Ï host ¤Ë»÷¤Æ¤¤¤ë¤¬¤è¤êºÙ¤«¤¤((¤È¤¤¤¦¤«ºÙ¤«¤¹¤®¤ë)...
¾Ü¤·¤¯¤Ï "man dig" ¤È "dig -h" ¤ÇÄ´¤Ù¤Æ¤â¤é¤¦¤È¤·¤Æ¡¤Â礶...
Ä̾ï¤Îñ¤Ê¤ëÀµ°ú¤¤Ï
dig www.osaka-u.ac.jp
¤Ç¤è¤¤.
ñ¤Ê¤ëµÕ°ú¤¤Ï "-x" ¥ª¥×¥·¥ç¥ó¤òÍѤ¤¤Æ
dig -x 133.1.8.18
¤È¤¹¤ë.
Ì䤤¹ç¤ï¤»¤Ë»È¤¦ DNS server ¤ò»ØÄꤷ¤¿¤¤¤È¤¤Ï¡¤@¤½¤Î¥µ¡¼...
Î㤨¤Ð¡¤¾å¤Î·ë²Ì¤«¤é www.osaka-u.ac.jp ¤Î¾ðÊó¤ÎÀÕǤ¸µ¤Ç¤¢...
dig @vanilla-ice.gw.osaka-u.ac.jp www.osaka-u.ac.jp
¤È¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> @vanilla-ice.gw.osaka-u.ac.jp www...
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35527
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN A
;; ANSWER SECTION:
www.osaka-u.ac.jp. 259200 IN A 133.1.8...
;; AUTHORITY SECTION:
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS ns.osak...
osaka-u.ac.jp. 259200 IN NS name-se...
osaka-u.ac.jp. 259200 IN NS ns1.ai3...
;; ADDITIONAL SECTION:
vanilla-ice.gw.osaka-u.ac.jp. 259200 IN A 133.1.1...
vanilla-ice.odins.osaka-u.ac.jp. 259200 IN A 133.1.1...
ns.osaka-u.ac.jp. 259200 IN A 133.1.1...
name-server.suita.odins.osaka-u.ac.jp. 259200 IN A 133....
ns1.ai3.net. 127742 IN A 202.249...
;; Query time: 1 msec
;; SERVER: 133.1.192.4#53(133.1.192.4)
;; WHEN: Wed Jan 9 23:04:25 2008
;; MSG SIZE rcvd: 266
¤È¤Ê¤ê¡¤¼«Ê¬¤¬ÀÕǤ¼Ô¤Ç¤¢¤ë¾ðÊó¤Ë¤Ä¤¤¤Æ¤ÏÁÇľ¤Ë¶µ¤¨¤Æ¤¯¤ì...
¤Ç¤Ï¡¤¾¯¤·Ä´»Ò¤Ë¤Î¤Ã¤Æ¤³¤Î¥Í¡¼¥à¥µ¡¼¥Ð¤Ë¾¤ÎÌ䤤¹ç¤ï¤»¤ò...
Î㤨¤Ð¡¤
dig @vanilla-ice.gw.osaka-u.ac.jp www.yahoo.co.jp
¤È¤·¤Æ¤ß¤ë. ¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> @vanilla-ice.gw.osaka-u.ac.jp www...
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26515
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADD...
;; QUESTION SECTION:
;www.yahoo.co.jp. IN A
;; AUTHORITY SECTION:
yahoo.co.jp. 47426 IN NS ns10.ya...
yahoo.co.jp. 47426 IN NS dnsg01....
;; ADDITIONAL SECTION:
ns10.yahoo.co.jp. 67433 IN A 210.80....
dnsg01.yahoo.co.jp. 67870 IN A 211.14....
;; Query time: 2 msec
;; SERVER: 133.1.192.4#53(133.1.192.4)
;; WHEN: Wed Jan 9 23:11:31 2008
;; MSG SIZE rcvd: 105
¤È¤Ê¤ê("ANSWER SECTION" ¤¬Ìµ¤¤¤³¤È¡¤NS ¤Ïɽ¼¨¤µ¤ì¤Æ¤¤¤ë¤³...
¤Á¤Ê¤ß¤Ë¡¤DNS Server ¤¬¤É¤¦¤¤¤¦ÆâÍƤˤɤ¦ÊÖÅú¤·¤Æ¤¯¤ì¤ë¤«...
¾Ü¤·¤¯¤Ï DNS Server ¤ÎÀßÄê¤ò¹Ô¤¦¤ÈÍý²ò¤Ç¤¤ë¤Î¤Ç¡¤¤½¤³¤Þ...
¤Þ¤¿¡¤dig ¤Ï +trace ¤È¤¤¤¦¥ª¥×¥·¥ç¥ó¤ò¤Ä¤±¤ë¤ÈÀ¸¿¿ÌÌÌܤË...
¤â¤¦¾¯¤·¾Ü¤·¤¯½ñ¤¯¤È¡¤¤³¤Î¥ª¥×¥·¥ç¥óÉÕ¤¤Ç¤Î dig ¤Ï¡¤Ì䤤...
¤è¤Ã¤Æ³Æ¡¹¤Î¥µ¡¼¥Ð¤Ïñ¤Ë¼ê»ý¤Á¤ÎÃμ±¤ÇºÇ¤â¥Þ¥·¤ÊÅú¤¨¤òÊÖ...
Î㤨¤Ð¡¤
dig +trace www.osaka-u.ac.jp
¤È¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> +trace www.osaka-u.ac.jp
;; global options: printcmd
. 10482 IN NS l.root-...
. 10482 IN NS d.root-...
. 10482 IN NS a.root-...
. 10482 IN NS g.root-...
. 10482 IN NS i.root-...
. 10482 IN NS k.root-...
. 10482 IN NS m.root-...
. 10482 IN NS h.root-...
. 10482 IN NS j.root-...
. 10482 IN NS f.root-...
. 10482 IN NS b.root-...
. 10482 IN NS c.root-...
. 10482 IN NS e.root-...
;; Received 244 bytes from 192.168.125.14#53(192.168.12...
jp. 172800 IN NS a.dns.jp.
jp. 172800 IN NS b.dns.jp.
jp. 172800 IN NS d.dns.jp.
jp. 172800 IN NS e.dns.jp.
jp. 172800 IN NS f.dns.jp.
;; Received 311 bytes from 199.7.83.42#53(l.root-server...
osaka-u.ac.jp. 86400 IN NS ns1.ai3...
osaka-u.ac.jp. 86400 IN NS name-se...
osaka-u.ac.jp. 86400 IN NS vanilla...
osaka-u.ac.jp. 86400 IN NS vanilla...
osaka-u.ac.jp. 86400 IN NS ns.osak...
;; Received 234 bytes from 202.12.30.131#53(b.dns.jp) i...
www.osaka-u.ac.jp. 259200 IN A 133.1.8...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS ns.osak...
osaka-u.ac.jp. 259200 IN NS name-se...
osaka-u.ac.jp. 259200 IN NS ns1.ai3...
;; Received 266 bytes from 133.1.119.1#53(name-server.s...
¤Ê¤É¤Î¤è¤¦¤ÊÊÖÅú¤¬Ê֤äƤ¯¤ë.
¤³¤ì¤ò¤ß¤ë¤È¡¤
+ ¼«Ê¬¤¬¤¤¤Ä¤âÌ䤤¹ç¤ï¤»¤ëºÇ´ó¤ê¤Î¥µ¡¼¥Ð(192.168.125.14)...
+ ¤½¤Î 13Âæ¤ÎÃæ¤Î l.root-servers.net ¤Ë "jp." ôÅö¤Î NS ...
+ ¤½¤Î5Âæ¤ÎÃæ¤Î b.dns.jp ¤Ë "osaka-u.ac.jp." ôÅö¤Î NS ¤¬...
+ ¤½¤Î5Âæ¤ÎÃæ¤Î name-server.suita.odins.osaka-u.ac.jp ¤Ë ...
¤È¤¤¤¦Î®¤ì¤Ç¸¡º÷¤·¤¿¤³¤È¤¬Ê¬¤«¤ë.
¤¿¤À¤·¡¤Ä̾ï¤Ï¡¤¤Ê¤ë¤Ù¤¯¥Í¥Ã¥È¥ï¡¼¥¯¾å¤òή¤ì¤ë¾ðÊ󤬾¯¤Ê...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(3) nslookup [#yf048a41]
dig ¤¬¹¤¯ÃΤé¤ì¤ëÁ°¤Ï¤è¤¯»È¤ï¤ì¤Æ¤¤¤¿¤Î¤¬¤³¤Î "nslookup"...
¤¢¤ë¾ò·ï¤òËþ¤¿¤µ¤Ê¤¤Ì䤤¹ç¤ï¤»¤ò¤½¤â¤½¤â¼õ¤±ÉÕ¤±¤Ê¤¤¤³¤È...
¤à¤·¤íÄ̾ï¥æ¡¼¥¶¤Ë¤È¤Ã¤Æ¤Î¼ÂÍѾå¤Î°ìÈ֤ηçÅÀ¤Ï¡¤(¸Å¤á¤Î n...
*** ¼Â½¬ [#p4862efb]
dig, nslookup ¤Ë¤Ä¤¤¤Æ¥Þ¥Ë¥å¥¢¥ë¤ÇÄ´¤Ù¤¿¸å¡¤¤¤¤¯¤Ä¤«¤Î¥Û...
¤Þ¤¿¡¤¤ª¤è¤ÓÆÀ¤é¤ì¤¿ IP ¥¢¥É¥ì¥¹¤ò¸µ¤ËµÕ°ú¤¤ò¹Ô¤Ã¤Æ¤ß¤è.
¤Þ¤¿¡¤¼«Ê¬¤Î·ÈÂӤΥ᡼¥ë¥¢¥É¥ì¥¹¤Ë¥á¡¼¥ë¤ò½Ð¤¹¾ì¹ç¡¤¤½¤Î...
* DNS server ¤ÎÀßÄê(¾ÜºÙ¤Ï¼¡²ó°Ê¹ß) [#le925ce9]
¤µ¤Æ¡¤DNS server ((¾¤Ë¤Ï¡¤¥Í¡¼¥à¥µ¡¼¥Ð¤È¤¤¤¦Ì¾Á°¤âÎɤ¯»È...
** DNS server ¤È¤·¤Æ²¿¤ò»È¤¦¤« [#ucf80c44]
DNS server ¥½¥Õ¥È¥¦¥§¥¢¤È¤·¤Æ¤Ï¼ç¤Ë BIND (Berkeley Intern...
¤³¤Î BIND ¤Ï¡¤BSD ͳÍè¤Î¥½¥Õ¥È¥¦¥§¥¢¤Ç¤¢¤ê¡¤FreeBSD ¤Ç¤Ï...
¤¿¤À¤·¡¤¸å½Ò¤¹¤ë¥»¥¥å¥ê¥Æ¥£¤ÎÌäÂ꤬¤¢¤ë¤Î¤Ç¡¤¤½¤Î»þÍøÍÑ...
¤¢¤È¡¤º®Í𤷤¬¤Á¤Ç¤¢¤ë¤¬¡¤BIND ¤¬ºî¤ë¥³¥Þ¥ó¥É¤Ï named (̾...
** BIND ÀßÄê¤Î¤¿¤á¤Î»ñÎÁ [#r82d4e3e]
¤Ê¤Ë¤·¤í BIND ¤Ï¸Å¤¯¤«¤é¤¢¤ë¥½¥Õ¥È¥¦¥§¥¢¤Î¤¿¤á¡¤¿Ê²½¤·¤Æ...
DNS ¤ËÂФ¹¤ëÍý²ò¤¬¤Ç¤¤Æ¤¤¤Ê¤¤¾õÂÖ¤ÇÀßÄê¥Õ¥¡¥¤¥ë¤òÆɤà¤È...
| ̾¾ÎÅù | È÷¹Í |h
| FreeBSD ¥·¥¹¥Æ¥à´ÉÍý¤È¥Á¥å¡¼¥Ë¥ó¥°(½ñÀÒ), page 341--374...
| FreeBSD ¥Ó¥®¥Ê¡¼¥º¥Ð¥¤¥Ö¥ë(²þÄûÂèÆóÈÇ)(½ñÀÒ), page 543-...
| BIND 9 ¤Ë¤è¤ë DNS ¥µ¡¼¥Ð¹½ÃÛ(½ñÀÒ) | ¤È¤Æ¤â¤ï¤«¤ê¤ä¤¹...
| DNS & BIND (½ñÀÒ) | ÄêÈÖÃæ¤ÎÄêÈÖ. ¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤¬...
** DNS server ¤È¥»¥¥å¥ê¥Æ¥£ [#h01adc2d]
DNS server ¤È¤¤¤¦¤Î¤Ï¸ÅÍè¤è¤ê cracker ¤Î¼ç¤Ê¹¶·âÂоݤΰì...
¤Ê¤¼ÁÀ¤ï¤ì¤ë¤«¤È¤¤¤¦¤È¡¤°Ê²¼¤Î¤è¤¦¤ÊÍýͳ¤Ë¤è¤ë.
: (Íýͳ) | (²òÀâ)
: ¥Í¥Ã¥È¥ï¡¼¥¯¤Î¾ðÊó¤ò»ý¤Ã¤Æ¤¤¤ë | ¤¦¤Þ¤¯¤¹¤ì¤Ð DNS serve...
: root ¸¢¸Â¤ÇÆ°ºî¤·¤Æ¤¤¤ë¤³¤È¤¬Â¿¤¤ | ¾è¤Ã¼è¤ì¤ì¤Ð¥·¥¹¥Æ...
: ¥Í¥Ã¥È¥ï¡¼¥¯¾ðÊó¤òÄ󶡤·¤Æ¤¤¤ë | server ¤¬¡Ö±³¤Î¾ðÊó¡×...
¤â¤Á¤í¤ó¡¤DNS server ¥½¥Õ¥È¥¦¥§¥¢¤â(¤½¤ì¤òÍѤ¤¤ë OS ¦¤â)...
¤Ç¤¢¤ë¤Î¤Ç¡¤DNS server ¤ÎÀßÄê¤Ë¤ÏÃí°Õ¤òʧ¤ª¤¦.
FreeBSD ¤Ç¤Ï¡¤¥»¥¥å¥ê¥Æ¥£¸þ¾å¤Î¤¿¤á¡¤BIND ¤Ë¤Ä¤¤¤Æ¤Ï¥Ç¥Õ...
+ ÆÃÊ̤ʥ桼¥¶ bind ¤Î¸¢¸Â¤ÇÆ°ºî¤¹¤ë. root¸¢¸Â¤Ç¤Ï¤Ê¤¤.
+ /var/named ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¤Ë BIND Æ°ºî´Ä¶¤¬¡ÖÊÄ...
*** ¼Â½¬ [#bfd525ef]
DNS ¥µ¡¼¥Ð¤ÎÄ󶡤¹¤ë¥Í¥Ã¥È¥ï¡¼¥¯¾ðÊó¤ò¡Öµ¶Áõ¡×¤¹¤ë¤³¤È¤Ç...
/etc/namedb ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤¬¼ÂºÝ¤Ë¤Ï¤É¤³¤Ë¤¢¤ë¤«Ä´¤Ù¤è.
* ¥ì¥Ý¡¼¥È [#y7497769]
¤³¤³¤Þ¤Ç¤Î¼Â½¬¤ò¹Ô¤¤¡¤Êó¹ð¤»¤è.
¤Þ¤¿¡¤13 ¤Î¥ë¡¼¥È¥µ¡¼¥Ð¤¬º£¤É¤³¤Ë¤¢¤ë¤«(¹ñ̾¡¤ÅÔ»Ô̾)¤òÄ´...
¤Þ¤¿¡¤2002ǯ¡¤2007ǯ¤Î¥ë¡¼¥È¥µ¡¼¥Ð¤Ø¤Î¹¶·â¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤è.
½ªÎ»¹Ô:
* ¤³¤ì¤Þ¤Ç¤ÎÉü½¬ [#q993033c]
¤³¤ì¤Þ¤Ç¤Î¼ø¶È¤ËÄɤ¤ÉÕ¤±¤Æ¤¤¤Ê¤¤¡¤¤â¤·¤¯¤ÏÍý²ò¤¬´°Á´¤Ç¤Ê...
¤½¤³¤Ç¾¯¤·»þ´Ö¤ò¼è¤ê¡¤¤³¤ì¤Þ¤Ç¤ÎÉü½¬¤ä²òÀâ¤ò¹Ô¤¦.
* DNS ¤ÎÍý²ò [#b9f8b40d]
¤µ¤Æ¡¤¤³¤³¤«¤é¤Ï DNS (Domain Name System) ¤Ë¤Ä¤¤¤Æ³Ø½¬¤·...
¤³¤ì¤Þ¤Ç¤Î¼ø¶ÈÆâÍÆ¤È DNS ¤¬¤ï¤«¤ì¤Ð¡¤¥µ¡¼¥ÐÀßÄê¤Î¡Ö¼çÍפÊ...
DNS ¤È¤Ï¥Û¥¹¥È̾(¾ÜºÙ¤Ï¸å½Ò¤¹¤ë)¤È IP address ¤ÎÂбþ¤ò¤Ï...
¥Û¥¹¥È̾¤È¥Í¥Ã¥È¥ï¡¼¥¯¹½Â¤¤ÎÂбþ´Ø·¸¤Ë´Ø¤¹¤ëʬ»¶¥Ç¡¼¥¿¥Ù...
Æüº¢ web ¤ò»È¤Ã¤¿¤ê¤·¤Æ¤¤¤Æ¡¤¤½¤ÎÁ´ÂΤλÅÁȤߤϴû¤Ë¤ª¤è¤½...
°Ê²¼¤Ç¹Ô¤¦¥µ¡¼¥Ð¤ÎÀßÄê¤â¡¤¾ÜºÙÉôʬ¤ò½ü¤±¤Ð¤½¤ó¤Ê¤ËÆñ¤·¤¯...
** ¤½¤â¤½¤â DNS ¤È¤¤¤¦¥Í¥Ã¥È¥ï¡¼¥¯¾å¤Îʬ»¶¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò...
»È¤Ã¤Æ¤¤¤ë¥Þ¥·¥ó¤ò¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤°¤Î¤Ç¤¢¤ì¤Ð¤Þ¤ºÉ¬Í×...
DNS ¤Ï¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Î¥Û¥¹¥È̾¤òÍѤ¤¤Æ¤½¤Î¥Û¥¹¥È¤Ø¥¢¥¯¥»...
µÕ¤Ë¸À¤¨¤Ð¡¤¡Ö¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤¬¤Ê¤±¤ì¤ÐÉÔÍפʤ³¤È¤â¤¢...
¤Þ¤¿¡¤¤½¤ÎÅÅÏÃÄ¢¤Î°ìÉôʬ¤ò¡Ö¼«Á°¤Î¥á¥â¤Ë½ñ¤¤¤Æ¤ª¤¯¡×¤È¤¤...
¤³¤ì¤Ï /etc/hosts ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤Ë¥Û¥¹¥È̾¤È IP Address ...
¤Ê¤ª¡¤/etc/hosts ¤Î¾ðÊó¤È DNS ¤Ø¤ÎÌ䤤¹ç¤ï¤»¤Î¤É¤Á¤é¤òÍ¥...
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï
hosts: files dns
¤È¤Ê¤Ã¤Æ¤ª¤ê¡¤/etc/hosts ¤òÍ¥À褹¤ë¤È¤¤¤¦ÂÅÅö¤ÊÀßÄê¤Ë¤Ê¤Ã...
** ¥Û¥¹¥È¡¤¥É¥á¥¤¥ó [#w0d85a12]
ºåÂç¤Îweb¥µ¡¼¥Ð¤Ï www.osaka-u.ac.jp ¤È¤¤¤¦Ì¾¾Î¤Ç¤¢¤ë¤¬¡¤...
¤Þ¤º¡¤¤³¤ì¤Ï www.osaka-u.ac.jp. ¤ÈºÇ¸å¤Ë¥É¥Ã¥È¤ò¤Ä¤±¤¿É½...
ºÇ¸å¤Î¥É¥Ã¥È¤Ï¡ÖÈó¾ï¤Ë¤·¤Ð¤·¤Ð¡×¾Êά¤µ¤ì¤Æ¤¤¤ë¤À¤±¤Ç¤¢¤ë.
Ä̾ï¥æ¡¼¥¶¤È¤·¤Æ¤Ï¤³¤ì¤Ïµ¤¤Ë¤¹¤ëɬÍפϤʤ¤¤¬¡¤DNS Server ...
¤µ¤Æ¼¡¤Ë¤³¤ÎÃæ¿È¤Ç¤¢¤ë¤¬¡¤¤³¤ì¤Ï osaka-u.ac.jp ¤È¤¤¤¦¥É¥á...
¤µ¤é¤Ë¥É¥á¥¤¥óÉôʬ¤ò¾Ü¤·¤¯²òÀ⤹¤ë¤È¡¤Àµ³Î¤Ë¤Ï¤³¤ì¤Ï .(¥É...
www.osaka-u.ac.jp. ¤ò¿Þ¤Ç½ñ¤¯¤È¼¡¤Î¤è¤¦¤Ë¤Ê¤ë(Îò»ËŪ¤Ë ¤è...
CENTER:&ref(./domain-structure.png);
³Æ³¬ÁؤˤÏÊ£¿ô(¤È¤¤¤¦¤«Èó¾ï¤Ë¿¤¯¤Î)¥É¥á¥¤¥ó¤¬´Þ¤Þ¤ì¤ë¤Î...
CENTER:&ref(./domain-structure-multi.png);
¤Á¤Ê¤ß¤Ë¡¤www.osaka-u.ac.jp ¤Î¤è¤¦¤Ë¡¤¥Û¥¹¥È̾+¥É¥á¥¤¥ó̾...
** DNS ¤ÎÌ䤤¹ç¤ï¤»¤Î¤ª¤ª¤¶¤Ã¤Ñ¤Ê»ÅÁÈ¤ß [#v149259d]
DNS ¤ÎÌ䤤¹ç¤ï¤»¤Ï¸úΨ¤ä°ÂÁ´À¤Î¤¿¤á¤Ë¼Â¤Ï·ë¹½Ê£»¨¤Ê»ÅÁÈ...
¾ï¤ËÂ礶¤Ã¤Ñ¤Ë¸À¤¨¤Ð¡¤³Æ¡¹¤Î³¬ÁؤΥɥᥤ¥ó¤Î¾ðÊó¤ò¼õ¤±»ý...
¤½¤·¤Æ¡¤DNS server ¤Ø¤ÎÌ䤤¹ç¤ï¤»¤È¤¤¤¦¤Î¤Ï¡¤¾å¤Î¥µ¡¼¥Ð¤«...
¤è¤êºÙ¤«¤¤¡¤Àµ³Î¤ÊÏäϸå½Ò¤¹¤ë.
¤³¤Î¤è¤¦¤Ë¡¤¥Ç¡¼¥¿¥Ù¡¼¥¹¤¬³¬Áع½Â¤¤ò¤â¤Ã¤Æʬ»¶¤µ¤ì¤Æ¤¤¤Æ...
** DNS Ì䤤¹ç¤ï¤»¤Î¼ïÎà(Æó¼ïÎढ¤ë) [#q89a5be2]
DNS ¥µ¡¼¥Ð¤Ø¤ÎÌ䤤¹ç¤ï¤»¤Ï¡¤Â礶¤Ã¤Ñ¤Ë¸À¤Ã¤ÆÆó¼ïÎढ¤ë.
ʬ¤«¤ê¤Ë¤¯¤¤¤Î¤Ç¤³¤³¤Ç½ñ¤¤¤Æ¤ª¤³¤¦.
: ºÆµ¢ÅªÌ䤤¹ç¤ï¤» | ´ÝÅꤲŪÌ䤤¹ç¤ï¤». ʹ¤«¤ì¤¿Êý¤Ï¡¤¼«...
: ÈóºÆµ¢ÅªÌ䤤¹ç¤ï¤» | ʹ¤«¤ì¤ëÊý¤ËÉéô¤Î¾¯¤Ê¤¤Ì䤤¹ç¤ï¤»...
DNS ¤Î»ÅÁȤߤ«¤é¤¤¤Ã¤Æ¡¤¡Ö狼°ì¿Í¤ÏºÆµ¢ÅªÌ䤤¹ç¤ï¤»¤ËÅú...
Ä̾ï¤Ï¡¤DNS ³¬ÁؤΤʤë¤Ù¤¯²¼¤Ëµï¤ÆºÆµ¢ÅªÌ䤤¹ç¤ï¤»¤ò½èÍý...
** DNS ¤«¤éÆÀ¤é¤ì¤ë¾ðÊó [#pda45248]
´ðËÜŪ¤Ë¤Ï¡¤DNS ¤Ç(ľÀܤË)ÆÀ¤é¤ì¤ë¾ðÊó¤Ï
| ¥Û¥¹¥È̾¤ò¼ê¤¬¤«¤ê¤È¤·¤¿¾ì¹ç¤Ï | ¤½¤Î¥Û¥¹¥È¤Î IP ¥¢¥É¥ì...
| IP Address ¤ò¼ê¤¬¤«¤ê¤È¤·¤¿¾ì¹ç¤Ï | ¤½¤Î¥Û¥¹¥È̾ |
¤È¤¤¤¦¤³¤È¤Ë¤Ê¤ë.
¤â¤Á¤í¤ó¡¤DNS ¤ËÌ䤤¹ç¤ï¤»¤ë²áÄø¤Ç´ÖÀÜŪ¤Ë¤Ï¤è¤ê¹¤¤¾ðÊó(...
¤³¤³¤Ç¡¤¾å¤Î¡ÖÆÀ¤é¤ì¤ë¾ðÊó¡×¤Ë¤Ä¤¤¤Æ¤â¤¦¾¯¤·¾ðÊó¤òµ¤·¤Æ...
¶ñÂÎŪ¤Ë¤Ï¡¤¼¡¤Î¡Ö¥ì¥³¡¼¥É̾¡×¤Ç¤¢¤ë. ¤³¤ì¤Ï¡¤DNS ¤Ç¤ÎÌä...
| ¥ì¥³¡¼¥É̾ | ²òÀâ |h
| SOA | ¤½¤Î¾ðÊó¤ÎÀÕǤ¸µ¤Î¾ðÊó. Start of Authority. ÀÕǤ...
| A | IP Address |
| AAAA | IP Address(IPv6) |
| NS | ¥Í¡¼¥à¥µ¡¼¥Ð |
| CNAME | ¤½¤Î¥Û¥¹¥È¤ÎÀµ½à̾(¢â¿¿¤Î̾Á°) |
| MX | ¤½¤Î¥¢¥É¥ì¥¹°¸¤Ë¥á¡¼¥ë¤¬Í褿¤é¤É¤Î¥á¡¼¥ë¥µ¡¼¥Ð¤ØÁ÷...
| PTR | ¥Û¥¹¥È̾ |
¤¢¤È¡¤DNS ¤Ë¤Ï»þ¡¹ "IN" ¤È¤¤¤¦¥¡¼¥ï¡¼¥É¤¬½Ð¤Æ¤¯¤ë¤¬¡¤¤³...
** Àµ°ú¤ [#c8d72fa1]
¥Û¥¹¥È̾¤«¤é IP Address ¤ä¾¤Î¾ðÊó¤òÃΤ뤿¤á¤Ë DNS Server...
Àµ°ú¤¤Ç¤¤Ê¤¤¥Û¥¹¥È¤È¤¤¤¦¤Î¤Ï¥¤¥ó¥¿¡¼¥Í¥Ã¥È¾å¤Ç¤Ï(°ì±þ)...
** µÕ°ú¤ [#m4d99afc]
µÕ¤Ë¡¤IP Address ¤«¤é¥Û¥¹¥È̾¤ä¾¤Î¾ðÊó¤òÃÎ¤í¤¦¤È¤¹¤ëÌ䤤...
¤Á¤Ê¤ß¤Ë¡¤µÕ°ú¤¤Ïɬ¤º½ÐÍè¤Ê¤±¤ì¤Ð¤¤¤±¤Ê¤¤¤Ï¤Èµ¬Äꤵ¤ì¤Æ...
¤Ä¤Þ¤ê¡¤µÕ°ú¤½ÐÍè¤Ê¤¤ IP Address ¤¬¤¢¤Ã¤Æ¤â DNS ¤Î¥ë¡¼¥ë...
¤¿¤À¡¤
- ¥Í¥Ã¥È¥ï¡¼¥¯¾å¤Ç¤½¤ì¤Ê¤ê¤Ë¤¤Á¤ó¤È¤·¤¿¥µ¡¼¥ÐÅù¤Ï¤Û¤È¤ó...
- µÕ°ú¤½ÐÍè¤Ê¤¤¥Û¥¹¥È¤ËÂФ·¤Æ¤Ï¢þ¢þ¤Î¥µ¡¼¥Ó¥¹¤ò¤·¤Ê¤¤¡¤¤È...
- Àµ°ú¤¤ÈµÕ°ú¤¤Î·ë²Ì¤¬À°¹ç¤·¤Ê¤¤¤È¤¤¤±¤Ê¤¤¡¤¤È¤¤¤¦¤µ¤é...
- ƱÍͤΥÁ¥§¥Ã¥¯¤ò¥Ñ¥¹¤·¤Ê¤¤¤ÈÆ°¤«¤Ê¤¤¥³¥Þ¥ó¥É¤â¤¢¤ë
¤Ê¤É¤Ê¤É¡¤µÕ°ú¤¤ò¤¤Á¤ó¤ÈÀßÄꤷ¤Ê¤¤¤Èº¤¤ë¾ìÌ̤⤢¤ë¤Î¤Ç...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(1) host [#i92bf37d]
¥µ¡¼¥Ð¤ÎÀßÄê°ÊÁ°¤Ë¡¤DNS ¾ðÊó¤òÃΤëÊýË¡¤ò°ìÈÌŪ¤ËÃΤäƤª...
¤¢¤Þ¤êÃΤé¤ì¤Æ¤¤¤Ê¤¤¤è¤¦¤Ë»×¤¦¤¬¡¤"host" ¥³¥Þ¥ó¥É¤¬Àµ°ú¤...
Î㤨¤Ð
host www.osaka-u.ac.jp
¤È¤¹¤ë¤È(Àµ°ú¤)
www.osaka-u.ac.jp has address 133.1.8.18
¤ÈÅú¤¨ "133.1.8.18" ¤¬Ê֤äƤ¯¤ë¤·,
host 133.1.8.18
¤È¤¹¤ë¤È(µÕ°ú¤)
18.8.1.133.in-addr.arpa domain name pointer www.osaka-u...
¤ÈÅú¤¨ "www.osaka-u.ac.jp." ¤¬Ê֤äƤ¯¤ë((host ¥³¥Þ¥ó¥É¤Ï...
¾åµ¤Î¤è¤¦¤Ë¡¤¥ª¥×¥·¥ç¥ó̵¤·¤À¤È host ¥³¥Þ¥ó¥É¤Ï¤½¤Ã¤±¤Ê...
Î㤨¤Ð¡¤
host -v www.osaka-u.ac.jp
¤È¤¹¤ë¤È, ¼¡¤Î¤è¤¦¤Ê½ÐÎϤ¬ÆÀ¤é¤ì¤ë((·ë²ÌŪ¤Ë A, AAAA, MX ...
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59886
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN A
;; ANSWER SECTION:
www.osaka-u.ac.jp. 250145 IN A 133.1.8...
;; AUTHORITY SECTION:
osaka-u.ac.jp. 250145 IN NS name-se...
osaka-u.ac.jp. 250145 IN NS ns1.ai3...
osaka-u.ac.jp. 250145 IN NS vanilla...
osaka-u.ac.jp. 250145 IN NS ns.osak...
osaka-u.ac.jp. 250145 IN NS vanilla...
;; ADDITIONAL SECTION:
vanilla-ice.gw.osaka-u.ac.jp. 83254 IN A 133.1.1...
vanilla-ice.odins.osaka-u.ac.jp. 83254 IN A 133.1.1...
ns.osaka-u.ac.jp. 83254 IN A 133.1.1...
name-server.suita.odins.osaka-u.ac.jp. 83254 IN A 133.1...
ns1.ai3.net. 103140 IN A 202.249...
Received 266 bytes from 192.168.125.14#53 in 0 ms
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37870
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN AAAA
;; AUTHORITY SECTION:
osaka-u.ac.jp. 1745 IN SOA vanilla...
Received 91 bytes from 192.168.125.14#53 in 0 ms
Trying "www.osaka-u.ac.jp"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30178
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN MX
;; AUTHORITY SECTION:
osaka-u.ac.jp. 1745 IN SOA vanilla...
Received 91 bytes from 192.168.125.14#53 in 0 ms
¤Á¤Ê¤ß¤Ë¡¤DNS Ì䤤¹ç¤ï¤»·ë²Ìɽ¼¨¤ÎÃæ¤Ç¡¤"IN" ¤ÎÁ°¤Ë¤·¤Ð¤·...
¾¤Ë¤â¡¤·ë¹½Â¿Íͤʥª¥×¥·¥ç¥ó¤¬¤¢¤ë¤Î¤Ç¡¤"man host" ¤È¤·¤Æ...
*** ¼Â½¬ [#q4bdba6f]
ŬÅö¤Ê¥Û¥¹¥È̾¤ËÂФ·¤Æ "host -v" ¤ÇÄ´¤Ù¤¿·ë²Ì¤ò¡¤¤³¤ì¤Þ¤Ç...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(2) dig [#je58fe1e]
¶áǯ¤Ç¤Ï¡¤DNS Ì䤤¹ç¤ï¤»¤ò¼ê¤Ç¹Ô¤¦¥³¥Þ¥ó¥É¤È¤·¤Æ¤Ï "dig" ...
»È¤¤Êý¤Ï host ¤Ë»÷¤Æ¤¤¤ë¤¬¤è¤êºÙ¤«¤¤((¤È¤¤¤¦¤«ºÙ¤«¤¹¤®¤ë)...
¾Ü¤·¤¯¤Ï "man dig" ¤È "dig -h" ¤ÇÄ´¤Ù¤Æ¤â¤é¤¦¤È¤·¤Æ¡¤Â礶...
Ä̾ï¤Îñ¤Ê¤ëÀµ°ú¤¤Ï
dig www.osaka-u.ac.jp
¤Ç¤è¤¤.
ñ¤Ê¤ëµÕ°ú¤¤Ï "-x" ¥ª¥×¥·¥ç¥ó¤òÍѤ¤¤Æ
dig -x 133.1.8.18
¤È¤¹¤ë.
Ì䤤¹ç¤ï¤»¤Ë»È¤¦ DNS server ¤ò»ØÄꤷ¤¿¤¤¤È¤¤Ï¡¤@¤½¤Î¥µ¡¼...
Î㤨¤Ð¡¤¾å¤Î·ë²Ì¤«¤é www.osaka-u.ac.jp ¤Î¾ðÊó¤ÎÀÕǤ¸µ¤Ç¤¢...
dig @vanilla-ice.gw.osaka-u.ac.jp www.osaka-u.ac.jp
¤È¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> @vanilla-ice.gw.osaka-u.ac.jp www...
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35527
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ...
;; QUESTION SECTION:
;www.osaka-u.ac.jp. IN A
;; ANSWER SECTION:
www.osaka-u.ac.jp. 259200 IN A 133.1.8...
;; AUTHORITY SECTION:
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS ns.osak...
osaka-u.ac.jp. 259200 IN NS name-se...
osaka-u.ac.jp. 259200 IN NS ns1.ai3...
;; ADDITIONAL SECTION:
vanilla-ice.gw.osaka-u.ac.jp. 259200 IN A 133.1.1...
vanilla-ice.odins.osaka-u.ac.jp. 259200 IN A 133.1.1...
ns.osaka-u.ac.jp. 259200 IN A 133.1.1...
name-server.suita.odins.osaka-u.ac.jp. 259200 IN A 133....
ns1.ai3.net. 127742 IN A 202.249...
;; Query time: 1 msec
;; SERVER: 133.1.192.4#53(133.1.192.4)
;; WHEN: Wed Jan 9 23:04:25 2008
;; MSG SIZE rcvd: 266
¤È¤Ê¤ê¡¤¼«Ê¬¤¬ÀÕǤ¼Ô¤Ç¤¢¤ë¾ðÊó¤Ë¤Ä¤¤¤Æ¤ÏÁÇľ¤Ë¶µ¤¨¤Æ¤¯¤ì...
¤Ç¤Ï¡¤¾¯¤·Ä´»Ò¤Ë¤Î¤Ã¤Æ¤³¤Î¥Í¡¼¥à¥µ¡¼¥Ð¤Ë¾¤ÎÌ䤤¹ç¤ï¤»¤ò...
Î㤨¤Ð¡¤
dig @vanilla-ice.gw.osaka-u.ac.jp www.yahoo.co.jp
¤È¤·¤Æ¤ß¤ë. ¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> @vanilla-ice.gw.osaka-u.ac.jp www...
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26515
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADD...
;; QUESTION SECTION:
;www.yahoo.co.jp. IN A
;; AUTHORITY SECTION:
yahoo.co.jp. 47426 IN NS ns10.ya...
yahoo.co.jp. 47426 IN NS dnsg01....
;; ADDITIONAL SECTION:
ns10.yahoo.co.jp. 67433 IN A 210.80....
dnsg01.yahoo.co.jp. 67870 IN A 211.14....
;; Query time: 2 msec
;; SERVER: 133.1.192.4#53(133.1.192.4)
;; WHEN: Wed Jan 9 23:11:31 2008
;; MSG SIZE rcvd: 105
¤È¤Ê¤ê("ANSWER SECTION" ¤¬Ìµ¤¤¤³¤È¡¤NS ¤Ïɽ¼¨¤µ¤ì¤Æ¤¤¤ë¤³...
¤Á¤Ê¤ß¤Ë¡¤DNS Server ¤¬¤É¤¦¤¤¤¦ÆâÍƤˤɤ¦ÊÖÅú¤·¤Æ¤¯¤ì¤ë¤«...
¾Ü¤·¤¯¤Ï DNS Server ¤ÎÀßÄê¤ò¹Ô¤¦¤ÈÍý²ò¤Ç¤¤ë¤Î¤Ç¡¤¤½¤³¤Þ...
¤Þ¤¿¡¤dig ¤Ï +trace ¤È¤¤¤¦¥ª¥×¥·¥ç¥ó¤ò¤Ä¤±¤ë¤ÈÀ¸¿¿ÌÌÌܤË...
¤â¤¦¾¯¤·¾Ü¤·¤¯½ñ¤¯¤È¡¤¤³¤Î¥ª¥×¥·¥ç¥óÉÕ¤¤Ç¤Î dig ¤Ï¡¤Ì䤤...
¤è¤Ã¤Æ³Æ¡¹¤Î¥µ¡¼¥Ð¤Ïñ¤Ë¼ê»ý¤Á¤ÎÃμ±¤ÇºÇ¤â¥Þ¥·¤ÊÅú¤¨¤òÊÖ...
Î㤨¤Ð¡¤
dig +trace www.osaka-u.ac.jp
¤È¤¹¤ë¤È¡¤
; <<>> DiG 9.3.3 <<>> +trace www.osaka-u.ac.jp
;; global options: printcmd
. 10482 IN NS l.root-...
. 10482 IN NS d.root-...
. 10482 IN NS a.root-...
. 10482 IN NS g.root-...
. 10482 IN NS i.root-...
. 10482 IN NS k.root-...
. 10482 IN NS m.root-...
. 10482 IN NS h.root-...
. 10482 IN NS j.root-...
. 10482 IN NS f.root-...
. 10482 IN NS b.root-...
. 10482 IN NS c.root-...
. 10482 IN NS e.root-...
;; Received 244 bytes from 192.168.125.14#53(192.168.12...
jp. 172800 IN NS a.dns.jp.
jp. 172800 IN NS b.dns.jp.
jp. 172800 IN NS d.dns.jp.
jp. 172800 IN NS e.dns.jp.
jp. 172800 IN NS f.dns.jp.
;; Received 311 bytes from 199.7.83.42#53(l.root-server...
osaka-u.ac.jp. 86400 IN NS ns1.ai3...
osaka-u.ac.jp. 86400 IN NS name-se...
osaka-u.ac.jp. 86400 IN NS vanilla...
osaka-u.ac.jp. 86400 IN NS vanilla...
osaka-u.ac.jp. 86400 IN NS ns.osak...
;; Received 234 bytes from 202.12.30.131#53(b.dns.jp) i...
www.osaka-u.ac.jp. 259200 IN A 133.1.8...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS vanilla...
osaka-u.ac.jp. 259200 IN NS ns.osak...
osaka-u.ac.jp. 259200 IN NS name-se...
osaka-u.ac.jp. 259200 IN NS ns1.ai3...
;; Received 266 bytes from 133.1.119.1#53(name-server.s...
¤Ê¤É¤Î¤è¤¦¤ÊÊÖÅú¤¬Ê֤äƤ¯¤ë.
¤³¤ì¤ò¤ß¤ë¤È¡¤
+ ¼«Ê¬¤¬¤¤¤Ä¤âÌ䤤¹ç¤ï¤»¤ëºÇ´ó¤ê¤Î¥µ¡¼¥Ð(192.168.125.14)...
+ ¤½¤Î 13Âæ¤ÎÃæ¤Î l.root-servers.net ¤Ë "jp." ôÅö¤Î NS ...
+ ¤½¤Î5Âæ¤ÎÃæ¤Î b.dns.jp ¤Ë "osaka-u.ac.jp." ôÅö¤Î NS ¤¬...
+ ¤½¤Î5Âæ¤ÎÃæ¤Î name-server.suita.odins.osaka-u.ac.jp ¤Ë ...
¤È¤¤¤¦Î®¤ì¤Ç¸¡º÷¤·¤¿¤³¤È¤¬Ê¬¤«¤ë.
¤¿¤À¤·¡¤Ä̾ï¤Ï¡¤¤Ê¤ë¤Ù¤¯¥Í¥Ã¥È¥ï¡¼¥¯¾å¤òή¤ì¤ë¾ðÊ󤬾¯¤Ê...
** DNS ¤Î¾õÂÖÅù¤òÃΤë¥Ä¡¼¥ë(3) nslookup [#yf048a41]
dig ¤¬¹¤¯ÃΤé¤ì¤ëÁ°¤Ï¤è¤¯»È¤ï¤ì¤Æ¤¤¤¿¤Î¤¬¤³¤Î "nslookup"...
¤¢¤ë¾ò·ï¤òËþ¤¿¤µ¤Ê¤¤Ì䤤¹ç¤ï¤»¤ò¤½¤â¤½¤â¼õ¤±ÉÕ¤±¤Ê¤¤¤³¤È...
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*** ¼Â½¬ [#p4862efb]
dig, nslookup ¤Ë¤Ä¤¤¤Æ¥Þ¥Ë¥å¥¢¥ë¤ÇÄ´¤Ù¤¿¸å¡¤¤¤¤¯¤Ä¤«¤Î¥Û...
¤Þ¤¿¡¤¤ª¤è¤ÓÆÀ¤é¤ì¤¿ IP ¥¢¥É¥ì¥¹¤ò¸µ¤ËµÕ°ú¤¤ò¹Ô¤Ã¤Æ¤ß¤è.
¤Þ¤¿¡¤¼«Ê¬¤Î·ÈÂӤΥ᡼¥ë¥¢¥É¥ì¥¹¤Ë¥á¡¼¥ë¤ò½Ð¤¹¾ì¹ç¡¤¤½¤Î...
* DNS server ¤ÎÀßÄê(¾ÜºÙ¤Ï¼¡²ó°Ê¹ß) [#le925ce9]
¤µ¤Æ¡¤DNS server ((¾¤Ë¤Ï¡¤¥Í¡¼¥à¥µ¡¼¥Ð¤È¤¤¤¦Ì¾Á°¤âÎɤ¯»È...
** DNS server ¤È¤·¤Æ²¿¤ò»È¤¦¤« [#ucf80c44]
DNS server ¥½¥Õ¥È¥¦¥§¥¢¤È¤·¤Æ¤Ï¼ç¤Ë BIND (Berkeley Intern...
¤³¤Î BIND ¤Ï¡¤BSD ͳÍè¤Î¥½¥Õ¥È¥¦¥§¥¢¤Ç¤¢¤ê¡¤FreeBSD ¤Ç¤Ï...
¤¿¤À¤·¡¤¸å½Ò¤¹¤ë¥»¥¥å¥ê¥Æ¥£¤ÎÌäÂ꤬¤¢¤ë¤Î¤Ç¡¤¤½¤Î»þÍøÍÑ...
¤¢¤È¡¤º®Í𤷤¬¤Á¤Ç¤¢¤ë¤¬¡¤BIND ¤¬ºî¤ë¥³¥Þ¥ó¥É¤Ï named (̾...
** BIND ÀßÄê¤Î¤¿¤á¤Î»ñÎÁ [#r82d4e3e]
¤Ê¤Ë¤·¤í BIND ¤Ï¸Å¤¯¤«¤é¤¢¤ë¥½¥Õ¥È¥¦¥§¥¢¤Î¤¿¤á¡¤¿Ê²½¤·¤Æ...
DNS ¤ËÂФ¹¤ëÍý²ò¤¬¤Ç¤¤Æ¤¤¤Ê¤¤¾õÂÖ¤ÇÀßÄê¥Õ¥¡¥¤¥ë¤òÆɤà¤È...
| ̾¾ÎÅù | È÷¹Í |h
| FreeBSD ¥·¥¹¥Æ¥à´ÉÍý¤È¥Á¥å¡¼¥Ë¥ó¥°(½ñÀÒ), page 341--374...
| FreeBSD ¥Ó¥®¥Ê¡¼¥º¥Ð¥¤¥Ö¥ë(²þÄûÂèÆóÈÇ)(½ñÀÒ), page 543-...
| BIND 9 ¤Ë¤è¤ë DNS ¥µ¡¼¥Ð¹½ÃÛ(½ñÀÒ) | ¤È¤Æ¤â¤ï¤«¤ê¤ä¤¹...
| DNS & BIND (½ñÀÒ) | ÄêÈÖÃæ¤ÎÄêÈÖ. ¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ë·Ò¤¬...
** DNS server ¤È¥»¥¥å¥ê¥Æ¥£ [#h01adc2d]
DNS server ¤È¤¤¤¦¤Î¤Ï¸ÅÍè¤è¤ê cracker ¤Î¼ç¤Ê¹¶·âÂоݤΰì...
¤Ê¤¼ÁÀ¤ï¤ì¤ë¤«¤È¤¤¤¦¤È¡¤°Ê²¼¤Î¤è¤¦¤ÊÍýͳ¤Ë¤è¤ë.
: (Íýͳ) | (²òÀâ)
: ¥Í¥Ã¥È¥ï¡¼¥¯¤Î¾ðÊó¤ò»ý¤Ã¤Æ¤¤¤ë | ¤¦¤Þ¤¯¤¹¤ì¤Ð DNS serve...
: root ¸¢¸Â¤ÇÆ°ºî¤·¤Æ¤¤¤ë¤³¤È¤¬Â¿¤¤ | ¾è¤Ã¼è¤ì¤ì¤Ð¥·¥¹¥Æ...
: ¥Í¥Ã¥È¥ï¡¼¥¯¾ðÊó¤òÄ󶡤·¤Æ¤¤¤ë | server ¤¬¡Ö±³¤Î¾ðÊó¡×...
¤â¤Á¤í¤ó¡¤DNS server ¥½¥Õ¥È¥¦¥§¥¢¤â(¤½¤ì¤òÍѤ¤¤ë OS ¦¤â)...
¤Ç¤¢¤ë¤Î¤Ç¡¤DNS server ¤ÎÀßÄê¤Ë¤ÏÃí°Õ¤òʧ¤ª¤¦.
FreeBSD ¤Ç¤Ï¡¤¥»¥¥å¥ê¥Æ¥£¸þ¾å¤Î¤¿¤á¡¤BIND ¤Ë¤Ä¤¤¤Æ¤Ï¥Ç¥Õ...
+ ÆÃÊ̤ʥ桼¥¶ bind ¤Î¸¢¸Â¤ÇÆ°ºî¤¹¤ë. root¸¢¸Â¤Ç¤Ï¤Ê¤¤.
+ /var/named ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤Î²¼¤Ë BIND Æ°ºî´Ä¶¤¬¡ÖÊÄ...
*** ¼Â½¬ [#bfd525ef]
DNS ¥µ¡¼¥Ð¤ÎÄ󶡤¹¤ë¥Í¥Ã¥È¥ï¡¼¥¯¾ðÊó¤ò¡Öµ¶Áõ¡×¤¹¤ë¤³¤È¤Ç...
/etc/namedb ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¤¬¼ÂºÝ¤Ë¤Ï¤É¤³¤Ë¤¢¤ë¤«Ä´¤Ù¤è.
* ¥ì¥Ý¡¼¥È [#y7497769]
¤³¤³¤Þ¤Ç¤Î¼Â½¬¤ò¹Ô¤¤¡¤Êó¹ð¤»¤è.
¤Þ¤¿¡¤13 ¤Î¥ë¡¼¥È¥µ¡¼¥Ð¤¬º£¤É¤³¤Ë¤¢¤ë¤«(¹ñ̾¡¤ÅÔ»Ô̾)¤òÄ´...
¤Þ¤¿¡¤2002ǯ¡¤2007ǯ¤Î¥ë¡¼¥È¥µ¡¼¥Ð¤Ø¤Î¹¶·â¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤è.
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