DNS/DHCP Management Console

Additional Options for Zone

Use this tab to specify the additional options for this zone.
To configure or modify an option, select the option and click Modify. To delete the value of an existing option, select the option and click Clear.

The following list of options are available:

allow-notify

Specifies the list of IP addresses or network addresses of DNS servers that are allowed to notify the secondary servers servicing this zone, when changes occur to this zone, in addition to the zone master server. If this field is not configured, each DNS server servicing this zone will use its own allow-notify value (if configured), otherwise the default value none is used. This option is valid and can be configured only for a secondary zone.

empty forwarder

Controls the behavior of queries for the zones. It specifies that no forwarding is done for the zone

If this field is configured, each DNS server servicing this zone will not forward the queries of this zone.

forward

Controls the behavior of queries for which the zone is not authoritative and the answer does not exist in the cache. Values can be either First or Only. The default is First. If First is specified, the server will query the forwarders list first and, if the answer is not found, the server will search for the answer itself. If Only is specified, the server will query only the forwarders list.

max-journal-size

Sets a maximum size in bytes for the journal file. This should be configured only for a Linux zone.

notify

Specifies whether a notification has to be sent to the secondary servers hosting this zone, when changes occur in this zone database. You can select from the following options:

If this field is not configured, each DNS server servicing this zone will use its notify value (if configured), otherwise the default value yes is used.

Notify-source

Specifies the local source address and, optionally, the UDP port that are used to send notify messages. The local source address must appear in the slave servers' masters list or in an allow-notify list. Slave should also be configured to receive notify messages from this address.

If this field is not configured, each DNS server servicing this zone will use its allow-notify value (if configured), otherwise the default value.

transfer-source

Specifies the local addresses that are bound to IPv4 TCP connections used to search the zones transferred inbound by the server. It also specifies the source IPv4 address and, optionally, the UDP port. The UDP port is used to refresh queries and forward any dynamic updates.

If this field is not configured, each DNS server servicing this zone will use its allow-notify value (if configured), otherwise the default value. This option is valid only for a secondary zone.

zone-statistics

Specifies whether the query and memory statistics has to be collected for this zone. If this field is not configured, each DNS server servicing this zone will use its zone-statistics value (if configured), otherwise the default value.


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