DNS

Record types, zones, TTL, zone transfer and DNSSEC.

• What is DNS; where is it used in TR7?GEN-05-001
• What is a DNS zone; how does it relate to a domain and a DNS record?GEN-05-002
• What is the difference between an A record and an AAAA record?GEN-05-003
• What is a CNAME record?GEN-05-004
• What is TTL; on which TR7 screens does it appear, and with what meaning?GEN-05-005
• What is the difference between an authoritative DNS server and a recursive resolver?GEN-05-006
• What is an MX record?GEN-05-007
• What is an NS record?GEN-05-008
• What is an SOA record; what do its fields mean?GEN-05-009
• What is a TXT record; how does it differ from the SPF record type?GEN-05-010
• What is an SRV record?GEN-05-011
• What are the PTR record and reverse DNS?GEN-05-012
• What is a CAA record; why does it matter when obtaining certificates with ACME?GEN-05-013
• What is a wildcard DNS record?GEN-05-014
• What do the DNS response codes (NOERROR, NXDOMAIN, SERVFAIL, REFUSED) mean?GEN-05-015
• What is a Zone Transfer (AXFR)?GEN-05-016
• What are master and slave DNS servers?GEN-05-017
• What is DNSSEC?GEN-05-018
• What is DNS NOTIFY?GEN-05-019
• What is a DS record; why is it submitted to the registrar in DNSSEC?GEN-05-020
• What are DNSKEY, RRSIG and NSEC records?GEN-05-021
• What is TSIG?GEN-05-022