??? ??????? ?????? ?????? ?? ????? ???????:

• ?????? ??????? ???? ???? ??????

• ??? ???????? ??????? ???? ?? ??????? ?? ????.

????? ?? ???? ??? ??????? ??? ??????? ???? ?? ???? ?? ??????? DNS ??? ??????? ?? ??? ??????? ?????? ??????. ???????? ??????? ???? ?????? ???????? ???????? DNS ?????? ??????? ???????? ?? ????? ????? DNS ????? ????? ???? ????.

?? ??? ??????? ??????? ????? ???? ???????? ??????? ????? ???? ?????? ??????? ????? ????? ????? ???????? ??????? ?????? ???????.

????? ????? ???????? ??????? ????? DNS ??????

???????? ??????? ???? ?????? ???????? ??????? ???????

??? ???? ????? DNS ???????? ????? ???? ?????? ?? ?? ??????? ???? ??? ????? ??? ??? ??? ??? ?? ??? ?????? ??????? ???? ???? ???.

??????? ??????? ???? ???????? ???????

• ??? ???? ????? A ?? CNAME ?????? ??????

• ??????? DNS ??? ????? ?????? ??????

• ????? DNS ??? ???? ?? ????? (????? ???????? ??????? ??? ???????? ??????? ????????)

????? ????? DNS ??????? ???? ???? ??? ???????? ???????

1. ????? DNS ?????? ?? ??? ?????

??? ?? ??? ?????? ?????? ??? DNS ?????? ?? ??? ??? ????? ??????? ?????? ?? ????. ???? ??????? ??????? ?? ????? DNS:

• ??? A: ???? ??? ?????? ?????? ??? ????? IP (??? subdomain.example.com → 192.0.2.1).

• ??? CNAME: ???? ??? ?????? ?????? ??? ???? ??? (??? subdomain.example.com → example.com).

??? ???? ??? ??????? ?????? ?? ??? ?????? ??? ????????? DNS ?? ???? ????? IP ??????? ??? ???? ??? ?????? ?????? ????.

??? ?? ???? ????? ?????? ?????? ????? ???? ????. ??? ???? ??????? ???? ??? ????? ????? ???: trial.example.com.example.com???? ????.

??? ?? ????? ??????? ?????? ?????? ?????? ???: trial.example.com?

????? ??????? ???? ?? ???? ????? DNS ?? ?????? ??? ????? ??????.

????? ?????? ??????: ????? ????? ?????? ?????? ??? ??????? DNS ??????

?? ??? ???????? ????? ?????? ?????? ??? ????????? ??? ???? DNS ????? ?? ????? ??? ?????? ???? ?? ????? DNS.

??? ???? ??????? ??? ??? ???? ???? ???? sub.example.com ????? ?? ?????? ?????? ???? DNS ??????? ??? ??? ?????? ??????? (example.com) ?? ????? ??? ??? NS (???? ???????) ???? ??? ???? DNS ?????? ?????? ??????.

??? ?? ????? ??? ??????? ??? ??? ?? ?????? ?????? ???? ????.

??? ??? ????? ????? DNS ???? ???? ?????? ??????? ?? ????? ????? ??? DNS ?? ?? ??????.

????? ??? ????? ??? DNS ????:

• ????????? ?? DNS ???? ?????.

• ?? ???? ?????? DNS ??????? ????? ????? ????? (TTL — ??? ??????).

• ?? ??? ??? ?????????? ????? DNS ???????? ????? ????? ??????? ?? ?????? ??? ??????? ??????? ??????.

????? ????? ?????? ?? ?????? ?? ???? ?????? ??????? ???? ????? ????? ????? ????? ?????? ?????? ?????.

??? ????? 1: "?????? ??????? ????? ???? ??? ?? ???? ?????? ?????? ?????"

????? ?? ???? ?? ?????? ?????? ??? ?? ???? ???????? ??? ??? ?????? ??????? ????? ??? ??? ??????. ???????? ??????? ????? ????? DNS ????? ??? ???? ??? ??????? ?????? ????? ??? ???????.

??? ????? 2: "???????? ??????? ??? ????????? ???????? ?? ?????? ???????"

???????? ??????? ?? ?? ?????? ?????? ?????? ?? DNS. ?? ??? ???????? ????????? ?? ??????? ?? ?????? ??????? ??? ??? ?? ??????? ?????.

??? ????? 3: "????? ??????? DNS ?????? ??????? ???? ????? ?????? ??????"

????? ????????? ?????? ??????? ?? ???? ???????? ??? ???????? ???????. ??? ???? ????? ?? ????? ????? DNS ?????? ?????? ??????.

????? ???????? ?????? ?????? ??????

??? ?????? ?????? ??????? ???? ??? ???????:

1. ???? ?? ????? DNS ?????? ??????: ?????? ???? ??? DNS (??? dig ?? nslookup) ?????? ?? ???? ????? DNS ?????? ?????? ??????.

2. ???? ?? ??? ?????: ???? ?? ?? ??? ????? (A? CNAME? ???) ?????? ?? ??????? ?????? ??????.

3. ???? ?? ????? ????? ??? ?????? ??????: ???? ????? ?? ?? ????? ???? ??? ????? DNS ??????? (?????? ??????? ?? ?????? ??????).

4. ????? ??? DNS: ??? ?? ????? ??????? ??????? ???? ????? ?????? ???? DNS ????? ??????.

?????? ??? ???????? ????? ????? ????? ???? ??????? ????? ??????? ??????? ??? ???????.

???? ????? DNS ???????? ????????? ??????? ?????? ????? ?????? DNS ???????? ?? ??????? ???????. ??? ??? ???????? ????????? ????? ???????? ??????? ????? ????? ????? ???? ????. ?? ???? ??? ????? ????? DNS? ????? ?????? ??????? ???? DNS? ????? ??????? ?????? ?????? ?????? ????? ?????? ??? ??? ??? ??? ?????.

?????? ????? ??????? ?? ?????? ??? DNS ? ????? ????????? ????? ??? ????? ?????? ??? ?? ???????? ???????? ????????? ???????. ?????? ???? ????? ?? ICANN? ???? ??????? ?? ????? ??????? DNS ????? ?????????? ??? ????????.

?????? ????? ??? ?????? ??????? ?? ???????? ???????? ????????? ????? ??????? ???????? ?? ???? ????? ??????.