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Umhloli weDNS

Faka igama lesizinda ukuze ulande yonke irekhodi ye-DNS epapashayo - iidilesi (A, AAAA), i-alias (CNAME), i-mail routing (MX), amaseva egama (NS), imibhalo yokuqinisekisa (TXT) kunye nemigaqo-nkqubo yokhuseleko (CAA, SOA).

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Luthetha ukuthini uhlobo ngalunye lwerekhodi ye-DNS

I-Domain Name System igcina okuninzi kunedilesi yendawo. Lo mkhangeli ubuza i-DNS ephilayo ngaphezulu kwe-DNS efihliweyo ngaphezulu kwe-HTTPS kwaye ixela lonke uhlobo lwerekhodi olupapashayo idomeyini:

  • A / AAAA — IPv4 / IPv6 idilesi indawo kwindawo. Ngaphandle kokunye kwezi, i-domain ayikwazi ukubamba iwebhusayithi.
  • CNAME - isiteketiso esikhomba elinye igama kwelinye. Ayivumelekanga kwi-zone apex, ngoko example.com ayizukubonisa nanye.
  • MX — iiseva zeposi ezifumana i-imeyile yedomeyini, nganye inokubaluleka. Akukho MX ngokuqhelekileyo ithetha ukuba akukho imeyile.
  • NS — iiseva zamagama ezigunyazisiweyo eziphendula indawo.
  • TXT - isicatshulwa samahhala: Imigaqo-nkqubo ye-SPF echasene ne-spoofing, ukusayinwa kwe-DKIM (kwi-subdomains), iithokheni zokuqinisekisa ubunini.
  • CAA — ngawaphi amagunya esatifikethi avumelekileyo ukuba akhuphe izatifikethi ze-TLS zesizinda.
  • SOA — Imethadatha yolawulo lwezowuni: iseva yegama esisiseko, umfowunelwa kunye nezibali-xesha ezifihliweyo.

Kutheni ujonga iirekhodi zeDNS?

  • Emva kokufuduka okanye ukuhlela kweDNS - qinisekisa ukuba iirekhodi ezintsha zihlala kwizisombululi zoluntu, hayi kwicache yekhompyuter yakho kuphela.
  • Ukuhanjiswa kwe-imeyile — qinisekisa ukuba amangeno e-SPF/MX achanekile phambi kokuba imiyalezo iqale ukugxwala.
  • Uphononongo lokhuseleko — jonga utshintsho olungalindelekanga lwe-TXT/NS, kwaye uqinisekise ukuba i-CAA idwelisa kuphela ii-CA ozisebenzisayo.

Ingcebiso: Ukuhlelwa kwe-DNS akuveli ngoko nangoko kuyo yonke indawo - irekhodi nganye i-TTL ixelela abasombululi ukuba bazakufihla ixesha elingakanani impendulo endala. Yehlisa i-TTL phambi kotshintsho olucwangcisiweyo, uze uyiphakamise kwakhona emva koko.

Uzifumene iidilesi? 'Yabona Domain ukuya IP kwiprofayile yokusingatha epheleleyo yedilesi, sebenzisa i jonga uluhlu lwabamnyama kuyo, okanye uyifunde umva i-DNS.

FAQ

Imibuzo ye-DNS checker

Yintoni umkhangeli we-DNS?

Umhloli we-DNS ubuza iNkqubo yegama leDomain kulo lonke uhlobo lwerekhodi lwesizinda - iidilesi ezikhomba kuyo (A, AAAA), iiseva zayo zeposi (MX), iiseva zamagama (NS), iintambo zokuqinisekisa (TXT) kunye nemigaqo-nkqubo yokhuseleko (CAA) - kwaye ingxelo ngokuchanekileyo oko kupapashwayo.

Kutheni ndingaboni irekhodi ye-CNAME yengcambu yendawo yam?

I-DNS ayivumeli i-CNAME kwi-zone apex (example.com ngokwayo) - ingcambu kufuneka isebenzise iirekhodi ze-A/AAAA. CNAME iirekhodi zivela kuphela subdomains ezifana www.umzekelo.com.

Utshintsho lweDNS luthatha ixesha elingakanani ukubonakala?

Irekhodi ngalinye liphethe i-TTL (ixesha lokuphila) exelela abasombululi ukuba bangayigcina ixesha elingakanani - ukusuka kwimizuzwana ukuya kwiintsuku. Emva kokuhlela irekhodi, abasombululi bakawonke-wonke baqhubeka benika impendulo endala de i-TTL iphelelwe lixesha, ngoko ke usasazo lunokuthatha ixesha elide njenge-TTL yangaphambili.