Configuring general settings

The general settings configuration specifies the interfaces that listen for DNS requests. By default, the system listens on the IPv4 and IPv6 addresses of all configured interfaces for DNS requests.

The other settings in the general settings configuration are applied when traffic does not match a Global DNS policy.

Before you begin:

• You must have a good understanding of DNS and knowledge of the DNS deployment in your network.
• You must have Read-Write permission for Global Load Balance settings.

To configure general settings:

1. Go to Global Load Balance > Zone Tools.
2. Click the General Settings tab.
3. Complete the configuration as described in General configuration.
4. Save the configuration.

General configuration

Settings	Guidelines
Global DNS Configuration	Enables/disables this configuration.
Recursion	Enables/disables recursion. If enabled, the DNS server attempts to do all the work required to answer the query. If not enabled, the server returns a referral response when it does not already know the answer.
DNSSEC	Enables/disables DNSSEC.
DNSSEC Validation	Enables/disables DNSSEC validation.
Listen on IPv6	Enables/disables listening for DNS requests on the interface IPv6 address.
Listen on IPv4	Enables/disables listening for DNS requests on the interface IPv4 address.
Traffic Log	Enables/disables traffic log.
Listen on All Interface	Enables listening on all interfaces.
Forward	First—The DNS server queries the forwarder before doing its own DNS lookup. Only—Only queries the forwarder. Does not perform its own DNS lookups. Note: The internal server caches the results it learns from forwarders, which optimizes subsequent lookups.
Use System DNS Server	Forwards DNS requests to the system DNS server instead of the forwarders list.
Response Rate Limit	Selects a rate limit configuration object. See Configuring the response rate limit.