Global Load Balancing : Configuring general settings
 
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 DNS Server 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 Table 44.
4. Save the configuration.
Table 44: 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.
Listen on All Interface
Enables listening on all interfaces.
Interface List
If you do not listen on all interfaces, select one or more ports to listen on.
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
Forward DNS requests to the system DNS server instead of the forwarders list.
Forwarders
If the DNS server zone has been configured as a forwarder, select the remote DNS servers to which it forwards requests. See “Configuring remote DNS servers”.
Response Rate Limit
Select a rate limit configuration object. See “Configuring the response rate limit”.