June 2018
Intermediate to advanced
368 pages
11h 1m
English
Content preview from Managing Mission - Critical Domains and DNS
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Constructing a zone
Different nameservers have differing representations of the DNS data being served, but for simplicity and because of its ubiquity, we'll use a traditional zone file format commonly used by BIND to display the components of a DNS zone:
;; This is an example zone file;; example.com;; generated: 02-Sep-2016 06:08:26 local time; 02-Sep-2016 10:08:26 GMT;$ORIGIN example.com.$TTL 86400@ IN SOA sns.dns.icann.org. noc.dns.icann.org. 2016110710 7200 3600 1209600 3600@ IN NS a.iana-servers.net.@ IN NS b.iana-servers.net.@ IN MX 0 mail.example.com.@ IN A 93.184.216.34@ IN AAAA 2606:2800:220:1:248:1893:25c8:1946www IN CNAME example.com.
The zone may have more than one $ORIGIN. The first $ORIGIN usually corresponds to the domain we ...
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