๐Ÿค” DNS

jaypyonยท2021๋…„ 3์›” 30์ผ
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Computer Networking

๋ชฉ๋ก ๋ณด๊ธฐ
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๋ถ„์‚ฐ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค

DNS๋Š” ๋ถ„์‚ฐ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค์ด๋ฉฐ Resource Records (RR)์„ ์ €์žฅํ•œ๋‹ค.

Resource Records ์˜ ํ˜•์‹

(name, value, type, ttl)

type=A
name : ํ˜ธ์ŠคํŠธ๋„ค์ž„ , value : IP address

type=NS
name : ๋„๋ฉ”์ธ๋„ค์ž„, value : ํ˜ธ์ŠคํŠธ๋„ค์ž„

type=CNAME
alias name for some canonical(the real) name,
www.dgu.cse is really servereast.backup2.dgu.com, canonical name

type=MX
value : ๋ฉ”์ผ์„œ๋ฒ„์ด๋ฆ„

์งˆ์˜ ๋ฐ ์‘๋‹ต


์‹๋ณ„์ž : 16๋น„ํŠธ๋กœ ๊ตฌ์„ฑ๋˜๋ฉฐ, ๊ฐ™์€ ์ˆœ๋ฒˆ์˜ ์งˆ์˜์ธ์ง€ ์‹๋ณ„ํ•œ๋‹ค.

questions : ์ฟผ๋ฆฌ์˜ ์ด๋ฆ„, ํƒ€์ž…
answers : RR๋“ค์˜ ์‘๋‹ต
authority : ์ฃผ ์„œ๋ฒ„์˜ ๋ ˆ์ฝ”๋“œ

์–ด๋–ค ์ •๋ณด๋ฅผ DNS์— ๋“ฑ๋กํ•ด์•ผํ•˜๋Š”๊ฐ€

.com TLD ์„œ๋ฒ„์— type=NS, type=A ์ •๋ณด๋ฅผ ๋“ฑ๋กํ•œ๋‹ค.
(dgucse.com, dns1.dgucse.com, NS)
(dns1.dgucse.com, dns1.dgucse.com, 212.231.214.1, A)

์ž์ฒด ๋„๋ฉ”์ธ์— www.dgucse.com์˜ Authoritative server type A record์™€
dgucse.com์˜ type MX record๋ฅผ ๋“ฑ๋กํ•œ๋‹ค.

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