예제 : 경원전문대(kyungwon-c.ac.kr)에서 새로운 호스트를
(hostname : sky, ip-address : 203.234.40.100)
등록하고자 하는경우
1. KRNIC에 등록되어 있는 자기 기관의 네임서버를 확인합니다.
# nslookup
Default Server: kwcsun.kyungwon-c.ac.kr
Address: 203.234.40.20
> server ns.krnic.net
Default Server: ns.krnic.net
Address: 202.30.64.21
> set type=ns
> kyungwon-c.ac.kr
Server: ns.krnic.net
Address: 202.30.64.21
Non-authoritative answer:
kyungwon-c.ac.kr nameserver = kwcsun.kyungwon-c.ac.kr
kyungwon-c.ac.kr nameserver = ns.kren.ne.kr
Authoritative answers can be found from:
kyungwon-c.ac.kr nameserver = kwcsun.kyungwon-c.ac.kr
kyungwon-c.ac.kr nameserver = ns.kren.ne.kr
kwcsun.kyungwon-c.ac.kr internet address = 203.234.40.20
ns.kren.ne.kr internet address = 147.47.1.1
>
위에서 kwcsun.kyungwon-c.ac.kr이 primary네임서버입니다.
2. 네임서버시스템의 /etc/named.boot를 보고 zone file과 inverse서비스
file의 위치와 file명을 확인합니다.
; /etc/named.boot
;
directory /home/DNS
; ^^^^^^^^^ DNS관련 file들이 위치하게 될 directory
domain kyungwon-c.ac.kr
; ^^^^^^^^^^^^^^^^ 자기기관의 도메인네임
;
; Type Domain Host / File Backup file
;
cache . root.cache
;
primary kyungwon-c.ac.kr kyungwon-c.zone
^^^^^^^^^^^^^^^ host들을 등록할 file이름
;
primary 0.0.127.in-addr.arpa localhost.rev
primary 40.234.203.in-addr.arpa 203.234.40.rev
; ^^^^^^^^^^^^^^ 203.234.40.0에 호스트를
; 등록할 경우 수정해야 할 file
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
3. 해당 디렉토리에서 kyungwon-c.zone과, 203.234.40.rev를 수정합니다.
수정후 Serial number를 날짜에 맞게 수정합니다.(단, 이전숫자보다 커야함)
;kyungwon-c.zone
@ IN SOA kwcsun.kyungwon-c.ac.kr. root.kwcsun.kyungwon-c.ac.kr. (
96040101 ;Serial
10800 ;Refresh
3600 ;Retry
86400 ;Expire
32400) ;Minimum
;
IN NS kwcsun.kyungwon-c.ac.kr.
IN NS ns.kren.ne.kr.
;
;
$ORIGIN kyungwon-c.ac.kr.
kwcsun IN A 203.234.40.20
sky IN A 203.234.40.100
////////////
;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.
20 IN PTR kwcsun.kyungwon-c.ac.kr.
100 IN PTR sky.kyungwon-c.ac.kr.
4. 네임데몬을 reset합니다.
# ps -ef|grep named
root 20756 1 2 10:11:47 ? 11:27 in.named
user1 24690 23676 0 16:45:24 pts/10 0:00 grep named
# kill -9 20756
# in.named
5. nslookup을 이용하여 제대로 등록이 되었는지 확인합니다.
# nslookup
Default Server: kwcsun.kyungwon-c.ac.kr
Address: 203.234.40.20
> sky.kwcsun.kyungwon-c.ac.kr
Server: kwcsun.kyungwon-c.ac.kr
Address: 203.234.40.20
Name: sky.kyungwon-c.ac.kr
Address: 203.234.40.100
> set type=ptr
> 100.40.234.203.in-addr.arpa
Server: kwcsun.kyungwon-c.ac.kr
Address: 203.234.40.20
100.40.234.203.in-addr.arpa name = sky.kyungwon-c.ac.kr
>