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[Àüüº¸±â]
ÄÄÇ»Å͹®Á¦ÇØ°á / ½ºÅ©¸³Æ®ÀÚ·á / ¸®´ª½ºÀÚ·á / Å×Å©³ëÆ®¼Ò½º / À¯Æ¿¸®Æ¼ / ¸ÖƼ¹Ìµð¾î / ÇàÁ¤¹®¼­ / À̹ÌÁö / ÀÎÅÍ³Ý /
¼ÒÇÁÆ®¿þ¾î / ±â¼úÀÚ·á / ÁÁÀºÀÚ·á / ÀüÅëÀÚ·á / Á÷¾÷ÀÚ·á / ±ÝÀ¶ÀÚ·á / ½º¸¶Æ®ÆùÀÚ·á / ±×´©º¸µå¼Ò½º / ¿©ÇàÀÚ·á/ ±âŸ

¤ýÀÛ¼ºÀÚ
¤ýÀÛ¼ºÀÏ 2005/06/09
¤ýºÐ ·ù ¸®´ª½º
¤ýÃßõ: 0  ¤ýÁ¶È¸: 1996      
DNS¼­¹ö ¼³Á¤Çϱâ_³×ÀÓ¼­¹ö ¼³Á¤Çϱâ

³×ÀÓ¼­¹ö´Â IPÁÖ¼Ò¸¦ »ç¶÷µéÀÌ ½±°Ô ±â¾ïÇÒ ¼ö Àִµµ¸ÞÀÎÁÖ¼Ò·Î ¸ÅÇνÃÄÑÁÖ´Â ¿ªÇÒÀ» ÇÕ´Ï´Ù.

¸®´ª½º¿¡¼­ ¾²ÀÌ´Â ³×ÀÓ¼­¹ö·Î´Â Bind(Barkeley Internet Name Domain)°¡ ¾²ÀÔ´Ï´Ù.
ÇÑÄĸ®´ª½º¿¡´Â ±âº»ÀûÀ¸·Î ¼³Ä¡°¡ µÇ¾î ÀÖÀ¸¹Ç·Î, ¼³Á¤À¸·Î ³Ñ¾î°¡½Ã¸é µË´Ï´Ù.
¸¸ÀÏÀ» À§ÇØ #rpm -qa|grep bind ·Î ÆÐÅ°Áö°¡ ¼³Ä¡µÇ¾î ÀÖ´ÂÁö È®ÀÎÇØ º¸½Ã°í, È®ÀεÇÁö ¾ÊÀ¸¸é ¼³Ä¡¸¦ ¸ÕÀú ÁøÇàÇϽñ⠹ٶø´Ï´Ù.

¸ÕÀú, ¼³Á¤¿¡ ÇÊ¿äÇÑ ÆÄÀϵéÀº ´ÙÀ½°ú °°½À´Ï´Ù.
- /etc/named.conf : ºÎÆ® ÆÄÀÏ, ù ¹ø° ¼³Á¤ ÆÄÀÏ
- /var/named/named.ca : ·çÆ® ³×ÀÓ¼­¹ö¿¡ ´ëÇÑ Á¤º¸°¡ ÀÖ´Â µ¥ÀÌÅͺ£À̽º ÆÄÀÏ(ij½Ã ÆÄÀÏ)
- /var/named/named.local : localhost¿¡ ´ëÇÑ ¼³Á¤ ÆÄÀÏ
- /var/named/forward.zone : Public Domain¿¡ ´ëÇÑ Forward zone ÆÄÀÏ
- /var/named/reverse.zone : Inverse Domain¿¡ ´ëÇÑ Reverse zone ÆÄÀÏ

1. namd.conf ¼³Á¤

¾Æ·¡´Â hancom.com µµ¸ÞÀο¡ ´ëÇÑ named.conf ÆÄÀÏÀÇ ¼³Á¤ÀÔ´Ï´Ù.
±âº»ÀûÀÎ ¼³Á¤ÆÄÀÏ¿¡¼­ ±½°Ô Ç¥½ÃµÈ ºÎºÐ¸¸, ½ÅûÇÑ µµ¸ÞÀο¡ ¸Â°Ô Ãß°¡¸¦ ÇÕ´Ï´Ù.

[root@ns root]# cat /etc/named.conf
// generated by named-bootconf.pl

options {
directory "/var/named";
/*
* If there is a firewall between you and nameservers you want
* to talk to, you might need to uncomment the query-source
* directive below. Previous versions of BIND always asked
* questions using port 53, but BIND 8.1 uses an unprivileged
* port by default.
*/
// query-source address * port 53;
};

//
// a caching only nameserver config
//
zone "." IN {
type hint;
file "named.ca";
};

zone "localhost" IN {
type master;
file "localhost.zone";
allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
type master;
file "named.local";
allow-update { none; };
};

zone "hancom.com" IN {
type master;
file "hancom.zone";
allow-update { none; };
};

zone "0.168.192.in-addr.arpa" IN {
type master;
file "hancom.rev";
allow-update { none; };
};
[root@ns root]#

À§¿Í °°ÀÌ ½ÅûÇÑ µµ¸ÞÀÎÀÎ hancom.com¿¡ ´ëÇÑ Æ÷¿öµå Á¸ ÆÄÀÏÀÎ hancom.zoneÀ» ÁöÁ¤ÇÏ¿´°í, ³×ÀÓ¼­¹ö¸¦ ¸¸µé È£½ºÆ®ÀÇ IPÀÎ 192.168.0.2ÀÇ ¿ªÀ¸·Î 0.168.192.in-addr-arpa¸¦ ÁöÁ¤ÇÏ°í ¸®¹ö½º Á¸ ÆÄÀÏ·Î hancom.rev ÆÄÀÏÀ» ÁöÁ¤ÇÏ¿´½À´Ï´Ù.

2. hancom.zone »ý¼º

named.conf ÆÄÀÏ¿¡¼­ ÁöÁ¤ÇÑ hancom.com¿¡ ´ëÇÑ Forward zone ÆÄÀÏ°ú Reverser zone ÆÄÀÏÀº °¢°¢ hancom.zone°ú hancom.rev·Î ¼³Á¤ÇÏ¿´½À´Ï´Ù. ÁöÁ¤ÇÑ ÆÄÀÏÀº /var/named µð·ºÅ丮¿¡ ÆÄÀÏÀ» »ý¼ºÇÕ´Ï´Ù.
/var/named À¸·Î À̵¿ÇÏ¿© »ìÆ캸¸é. ±âº»ÀûÀ¸·Î named.ca, localhost.zone, named.local ÆÄÀÏÀº »ý¼ºµÇ¾î ÀÖ½À´Ï´Ù.

hancom.zone ÆÄÀÏÀ» »ý¼ºÇϱâ À§ÇØ, named.local ÆÄÀÏÀ» hancom.zoneÆÄÀÏ·Î º¹»çÇÕ´Ï´Ù.
[root@ns root]# cd /var/named
[root@ns named]# ls
localhost.zone named.ca named.local
[root@ns named]# cp named.local hancom.zone

Çü½Ä¿¡ ¸Â°Ô hancom.zone ÆÄÀÏÀ» ÆíÁýÇÕ´Ï´Ù.
[root@ns named]# vi /var/named/hancom.zone
$TTL    86400
@ IN SOA ns.hancom.com. root.ns.hancom.com. (
2002062500 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS ns.hancom.com.
IN MX 10 mail.hancom.com.

ns IN A 192.168.0.2
hancom.com. IN A 192.168.0.2
mail IN A 192.168.0.3
www IN A 192.168.0.4
ftp IN A 192.168.0.5

[ÁÖÀÇ] ÆíÁý½Ã µµ¸ÞÀÎ ¸í ´ÙÀ½Àº ¹Ýµå½Ã ÄÞ¸¶(.)À» Âï¾î¾ß ÇÕ´Ï´Ù.

3. hancom.rev »ý¼º

Æ÷¿öµå Á¸ ÆÄÀÏÀÎ hancom.zoneÀ» »ý¼ºÇß´Ù¸é, ³ª¸ÓÁö Çϳª ¸®¹ö½º Á¸ ÆÄÀÏÀÎ hancom.revÆÄÀϸ¸ »ý¼ºÇÏ¸é µË´Ï´Ù.
hancom.rev ÆÄÀÏÀ» »ý¼ºÇϱâ À§ÇØ, named.local ÆÄÀÏÀ» hancom.rev ÆÄÀÏ·Î º¹»çÇÕ´Ï´Ù
[root@ns root]# cd /var/named
[root@ns named]# ls
hancom.zone localhost.zone named.ca named.local
[root@ns named]# cp named.local hancom.rev

hancom.rev ÆÄÀÏÀ» ´ÙÀ½°ú °°ÀÌ ÆíÁýÇÕ´Ï´Ù.
[root@ns named]# vi /var/named/hancom.rev
$TTL    86400
@ IN SOA ns.hancom.com. root.ns.hancom.com. (
2002062500 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS ns.hancom.com.

2 IN PTR ns
3 IN PTR mail
4 IN PTR www
5 IN PTR ftp

Çü½Ä

±âº»ÀûÀÎ Çü½ÄÀº °°À¸¸ç, IP¸¦ µµ¸ÞÀÎÀ¸·Î ¸ÅÇÎÇÒ ¼ö ÀÖµµ·Ï PTR(Pointer) ·¹Äڵ带 »ç¿ëÇÏ¿©, µµ¸ÞÀο¡ ´ëÇÑ IP¸¦ ÁöÁ¤ÇÏ¸é µË´Ï´Ù.

4. ±× ¿Ü ¼³Á¤

³×ÀÓ¼­¹ö¸¦ ¼³Á¤ÇÏ´Â ¼­¹öÀÇ /etc/resolve.confÆÄÀÏÀ» Àá½Ã »ìÆ캸°í, ³×ÀÓ¼­¹ö ¼³Á¤¿¡ ¸Â°Ô ¼öÁ¤À» ÇÕ´Ï´Ù. /etc/hostsÆÄÀÏ°ú /etc/host.confÆÄÀÏÀº Âü°í·Î »ìÆ츸 º¸½Ã¸é µË´Ï´Ù.

/etc/resolve.conf

¼­¹öÀÇ ³×ÀÓ¼­¹ö¸¦ ÁöÁ¤ÇÏ´Â °ÍÀ¸·Î, ÀÔ·ÂµÈ ¼ø¼­´ë·Î ÁöÁ¤µÈ ³×ÀÓ¼­¹ö¿¡ ÁúÀǸ¦ ÇÏ°Ô µË´Ï´Ù. ù ¹ø° µî·ÏµÉ ³×ÀÓ¼­¹ö´Â NICÀ̳ª KRNIC¿¡ µî·ÏµÈ 1Â÷ ³×ÀÓ¼­¹ö·Î ns.hancom.comÀ» ¼ÂÆÃÇϴ ȣ½ºÆ®ÀÇ IP¸¦ µî·ÏÇÕ´Ï´Ù.
[root@ns named]# cat /etc/resolv.conf
nameserver 192.168.0.2
nameserver 168.126.63.1

/etc/hosts

hosts´Â °£´ÜÇÑ ³×ÀÓ¼­¹öÀÇ ¿ªÇÒÀ» ÇÏ´Â °ÍÀ¸·Î, ÀÚÁÖ ¾²´Â µµ¸ÞÀο¡ ´ëÇÑ ¾Ë¸®¾Æ½º¸¦ ÁöÁ¤ÇÒ ¼ö ÀÖ½À´Ï´Ù. ¸¸ÀÏ http://www.hancom.com À¥ »çÀÌÆ® Á¢¼ÓÀÌ ºó¹øÇÒ °æ¿ì, °£´ÜÈ÷ /etc/hosts ÆÄÀÏ¿¡ ¾Æ·¡¿Í °°ÀÌ µî·ÏÇϹǷνá www¸¸À¸·Î www.hancom.com ¼­¹ö·Î Á¢¼ÓÇÏ°Ô µË´Ï´Ù.
[root@ns named]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
192.168.0.2 ns.hancom.com. ns
211.233.3.59 kr.hancom.com www

/etc/host.conf

¾Æ·¡ ±×¸²°ú °°ÀÌ hosts¿Í bind ¿¡ ´ëÇÑ ÂüÁ¶ ¼ø¼­¸¦ °áÁ¤ÇÕ´Ï´Ù. ¸¸ÀÏ, ¼ø¼­°¡ ¹Ù²î¾î ÀÖ´Ù¸é, /etc/hostsÆÄÀÏÀº ¹«¿ëÁö¹°ÀÌ µÇ°ÚÁÒ?
[root@ns named]# cat /etc/host.conf
order hosts,bind
[root@ns named]#

5. ³×ÀÓ ¼­¹ö µ¥¸ó Àç °¡µ¿

º¯°æÀÌ ¿Ï·á µÇ¾ú´Ù¸é, µ¥¸óÀ» Àç ½ÇÇàÇÕ´Ï´Ù.

[root@ns root]# /etc/rc.d/init.d/named stop
named ¸¦ Á¤ÁöÇÔ: [ È®ÀÎ ]
[root@ns root]# /etc/rc.d/init.d/named start
named (À»)¸¦ ½ÃÀÛÇÕ´Ï´Ù: [ È®ÀÎ ]
[root@ns root]#

6. ³×ÀÓ ¼­¹ö ¼³Á¤ ¿À·ù üũ

³×ÀÓ¼­¹ö¸¦ ±¸ÃàÇÏ°í ¹®Á¦Á¡À» üũÇÏ´Â µµ±¸´Â ¿©·¯ °¡Áö°¡ ¸¹½À´Ï´Ù. ±× Áß °¡Àå ¸¹ÀÌ ¾²ÀÌ´Â nslookupÀ¸·Î ³×ÀÓ¼­¹ö¸¦ üũÇÏ´Â ¹æ¹ýÀ» ¾Ë¾Æº¸µµ·Ï ÇÏ°Ú½À´Ï´Ù.

¸í·ÉÇà¿¡¼­ nslookup¸¦ ÀÔ·ÂÇÕ´Ï´Ù.
[root@ns root]# nslookup
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
>

>¿¡ ¼ÂÆÃµÈ ³×ÀÓ ¼­¹ö¸íÀ» ÀÔ·ÂÇÕ´Ï´Ù.

¾Æ·¡¿Í °°ÀÌ hancom.comÀ» ÀÔ·ÂÇÒ °æ¿ì Á¦´ë·Î µÈ 192.168.0.2ÀÇ ³×ÀÓ¼­¹ö°¡ Ãâ·ÂµË´Ï´Ù.
> hancom.com
Server: 192.168.0.2
Address: 192.168.0.2#53

Name: hancom.com
Address: 192.168.0.2
>

¸¸ÀÏ, server cant't find ns.hancom.com : NXDOMAIN À̶ó°í ¸Þ½ÃÁö°¡ ³ª¿À¸é Á¦´ë·ÎµÈ ¼³Á¤ÀÌ ¾Æ´Ï¹Ç·Î, ¼³Á¤ ÆÄÀϵéÀ» ´Ù½Ã »ìÆ캼 ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù.

 
À­±Û DNS¼­¹ö_ÇϳªÀÇ ¼­¹ö¿¡ 2°³ÀÌ»óÀÇ µµ¸ÞÀÎ ¼³Á¤Çϱâ
¾Æ·¡±Û who(ÇöÀç »ç¿ëÀÚ º¸±â)

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