www.debian.org instead of 130.89.148.77 or 2001:67c:2564:a119::77.
A (adresseoppføring): IPv4-adresse. Dette er den vanligste måten å peke et domene til en IPv4-adresse.
CNAME (canonical name record): alias
MX (mail exchange): an email server. This information is used by other email servers to find where to send email addressed to a given address. Each MX record has a priority. The highest-priority server (with the lowest number) is tried first (see sidebar DET GRUNNLEGGENDE SMTP); other servers are contacted in order of decreasing priority if the first one does not reply.
PTR (pointer): mapping of an IP address to a name. Such a record is stored in a “reverse DNS” zone named after the IP address range. For example, 1.168.192.in-addr.arpa is the zone containing the reverse mapping for all addresses in the 192.168.1.0/24 range.
AAAA (IPv6-adresseoppføring): IPv6 address.
NS (name server): maps a name to a name server. Each domain must have at least one NS record. These records point at a DNS server that can answer queries concerning this domain; they usually point at the primary and secondary servers for the domain. These records also allow DNS delegation; for instance, the falcot.com zone can include an NS record for internal.falcot.com, which means that the internal.falcot.com zone is handled by another server. Of course, this server must declare an internal.falcot.com zone.
bind, uavhengig av versjon, har den samme strukturen.
falcot.com-sone for å lagre informasjon relatert til dette domenet, og en 168.192.in-addr.arpa-sone for reversert kartlegging av IP-adresser i de lokale nettverkene.
Eksempel 10.12. Utdag av /etc/bind/named.conf.local
zone "falcot.com" {
type master;
file "/etc/bind/db.falcot.com";
allow-query { any; };
allow-transfer {
195.20.105.149/32 ; // ns0.xname.org
193.23.158.13/32 ; // ns1.xname.org
};
};
zone "internal.falcot.com" {
type master;
file "/etc/bind/db.internal.falcot.com";
allow-query { 192.168.0.0/16; };
};
zone "168.192.in-addr.arpa" {
type master;
file "/etc/bind/db.192.168";
allow-query { 192.168.0.0/16; };
};Eksempel 10.13. Utdrag av /etc/bind/db.falcot.com
; falcot.com-sonen ; admin.falcot.com. => zone contact: [email protected] $TTL 604800 @ IN SOA falcot.com. admin.falcot.com. ( 20040121 ; Seriellnummer 604800 ; Fornying 86400 ; Nytt forsøk 2419200 ; Utløp 604800 ) ; Negativ mellomglagrings-TTL ; ; @ refererer til sonenavnet ("falcot.com" her) ; eller til $ORIGIN hvis det uttrykket har vært brukt ; @ IN NS ns @ IN NS ns0.xname.org. internal IN NS 192.168.0.2 @ IN A 212.94.201.10 @ IN MX 5 mail @ IN MX 10 mail2 ns IN A 212.94.201.10 mail IN A 212.94.201.10 mail2 IN A 212.94.201.11 www IN A 212.94.201.11 dns IN CNAME ns
Eksempel 10.14. Utdrag fra /etc/bind/db.192.168
; Reverssone for 192.168.0.0/16 ; admin.falcot.com. => zone contact: [email protected] $TTL 604800 @ IN SOA ns.internal.falcot.com. admin.falcot.com. ( 20040121 ; Seriellnummer 604800 ; Fornying 86400 ; Nytt forsøk 2419200 ; Utløp 604800 ) ; Negativ mellomlagrings-TTL IN NS ns.internal.falcot.com. ; 192.168.0.1 -> arrakis 1.0 IN PTR arrakis.internal.falcot.com. ; 192.168.0.2 -> neptune 2.0 IN PTR neptune.internal.falcot.com. ; 192.168.3.1 -> pau 1.3 IN PTR pau.internal.falcot.com.