Red Hat ENTERPRISE LINUX 5 - DEPLOYMENT Deployment Manual page 235

allow-query
Specifies the clients that are allowed to request information about this zone. The default is to allow
all query requests.
allow-transfer
Specifies the slave servers that are allowed to request a transfer of the zone's information. The
default is to allow all transfer requests.
allow-update
Specifies the hosts that are allowed to dynamically update information in their zone. The default is
to deny all dynamic update requests.
Be careful when allowing hosts to update information about their zone. Do not enable this option
unless the host specified is completely trusted. In general, it is better to have an administrator
manually update the records for a zone and reload the named service.
file
Specifies the name of the file in the named working directory that contains the zone's configuration
data.
masters
Specifies the IP addresses from which to request authoritative zone information and is used only if
the zone is defined as typeslave.
notify
Specifies whether or not named notifies the slave servers when a zone is updated. This directive
accepts the following options:
• yes — Notifies slave servers.
• no — Does not notify slave servers.
• explicit — Only notifies slave servers specified in an also-notify list within a zone
statement.
type
Defines the type of zone.
Below is a list of valid options:
• delegation-only — Enforces the delegation status of infrastructure zones such as COM,
NET, or ORG. Any answer that is received without an explicit or implicit delegation is treated as
NXDOMAIN. This option is only applicable in TLDs or root zone files used in recursive or caching
implementations.
• forward — Forwards all requests for information about this zone to other nameservers.
• hint — A special type of zone used to point to the root nameservers which resolve queries
when a zone is not otherwise known. No configuration beyond the default is necessary with a
hint zone.
• master — Designates the nameserver as authoritative for this zone. A zone should be set as
the master if the zone's configuration files reside on the system.
Common Statement Types
209