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dNS II

ravel@sparcs. dNS II. DNS. 1. 2. ravel. s parcs.org. org. 3. 10. 4. 6. 9. 5. 8. blog.naver.com. naver.com. com. 7. DNS. s parcs.org. DNS server 인 동시에 client!. as DNS client : resolver. search. nameserver. as DNS server : named. 부팅 때 named 가 시작 named.boot. named.boot.

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dNS II

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  1. ravel@sparcs dNSII

  2. DNS 1 2 ravel sparcs.org org 3 10 4 6 9 5 8 blog.naver.com naver.com com 7

  3. DNS sparcs.org DNS server인 동시에 client!

  4. as DNS client : resolver

  5. search

  6. nameserver

  7. as DNS server : named • 부팅 때 named가 시작 • named.boot

  8. named.boot

  9. DNS database • [name] [ttl] [class] type data

  10. DNS database - name • 이름 / 절대 이름 • 절대 이름은 .(period)으로 끝남 • Ex)domain : sparcs.org name : a  a.sparcs.org name : a.sparcs.org  a.sparcs.org.sparcs.org

  11. DNS database - class • IN / CH / HS • IN

  12. DNS database – type SOA • zone의 처음에 와야함 • @ IN SOA domain admin serial refresh retry expire minimum • @ IN SOA sparcs.kaist.ac.kr admin.sparcs.kaist.ac.kr 1001 21600 1800 1209600 432000

  13. DNS database – type NS • SOA 다음에… • Zone [ttl] [class] NS hostname • sparcs.kaist.ac.kr. IN NS ns.sparcs.kaist.ac.krsparcs.kaist.ac.kr. IN NS ns2.sparcs.kaist.ac.kr

  14. DNS database – type A • hostname [ttl] [class] A ipaddr • Ex)ravel IN A 143.248.234.112 • (geogy)

  15. DNS database – type PTR • Ipaddr [ttl] [class] PTR hostname • Ex)143.248.234.112 IN A ravel • 143.248.234.112.IN-ADDR.ARPA. • A와 짝

  16. DNS database – type MX • name [ttl] [class] preference hostname • Ex)ravel IN MX 10 ravel IN MX 20 mail IN MX 30 sparcs.org.

  17. DNS database – other types • CNAME (nickname) • HINFO (System information) • WKS (supported services) • TXT (comment) • …..

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