lectures.alex.balgavy.eu

Lecture notes from university.
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dns.md (399B)

      1 +++
      2 title = 'DNS'
      3 +++
      4 
      5 ## DNS
      6 resolves hostnames to IP addresses.
      7 
      8 DNS query:
      9 - query local DNS server
     10 - if not found, go to root nameserver
     11 - root says to contact TLD nameserver (e.g. "com")
     12 - TLD nameserver says to contact domain nameserver
     13 - domain nameserver gives IP address
     14 
     15 DNS types:
     16 - resolution: AAAA (IPv6), A (IPv4)
     17 - nameserver: NS
     18 - alias (canonical hostname): CNAME
     19 - mail server: MX