Protocol

DNS

Domain Name System

Lab ready Full lab

Hierarchical name resolution with UDP/TCP queries and resource records (A/AAAA/CNAME/MX/TXT/…). Caching, EDNS, and DNSSEC affect both performance and security. Almost every internet protocol dependency starts with a DNS lookup.

Domains

Tags

namesrecordsresolvercache

Sources

  • RFC 1035
  • RFC 6891 (EDNS)

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