Authoritative-only Name Server

named.conf에 recursion no 해주면
자신이 가지고 있는 정보에 대해서만 네임서버 조회가 가능하다

# vi /etc/named.conf

options {
directory "/var/named";
pid-file "named.pid";
recursion no;
};

[root@s92 /var/named/chroot/var/named]# dig @ns.s92.sist.co.kr www.s92.sist.co.kr

; <<>> DiG 9.3.0 <<>> @ns.s92.sist.co.kr www.s92.sist.co.kr
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63508
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;www.s92.sist.co.kr. IN A

;; ANSWER SECTION:
www.s92.sist.co.kr. 2 IN A 211.63.89.92

;; AUTHORITY SECTION:
s92.sist.co.kr. 2 IN NS ns.s92.sist.co.kr.

;; ADDITIONAL SECTION:
ns.s92.sist.co.kr. 2 IN A 211.63.89.92

;; Query time: 0 msec
;; SERVER: 211.63.89.92#53(ns.s92.sist.co.kr)
;; WHEN: Tue Dec 6 09:33:31 2005
;; MSG SIZE rcvd: 85

[root@s92 /var/named/chroot/var/named]# dig @ns.s92.sist.co.kr www.tland.co.kr

; <<>> DiG 9.3.0 <<>> @ns.s92.sist.co.kr www.tland.co.kr
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17697
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 0

;; QUESTION SECTION:
;www.tland.co.kr. IN A

;; AUTHORITY SECTION:
kr. 172299 IN NS F.DNS.kr.
kr. 172299 IN NS G.DNS.kr.
kr. 172299 IN NS A.DNS.kr.
kr. 172299 IN NS B.DNS.kr.
kr. 172299 IN NS C.DNS.kr.
kr. 172299 IN NS D.DNS.kr.
kr. 172299 IN NS E.DNS.kr.

;; Query time: 0 msec
;; SERVER: 211.63.89.92#53(ns.s92.sist.co.kr)
;; WHEN: Tue Dec 6 09:33:50 2005
;; MSG SIZE rcvd: 149