Chapter 18 DNS Inbound LB
ZyWALL ATP Series User’s Guide
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Figure 262
Configuration > Network > DNS Inbound LB > Add
The following table describes the labels in this screen.
Table 151 Configuration > Network > DNS Inbound LB > Add/Edit
LABEL
DESCRIPTION
Create New Object
Use this to configure any new setting objects that you need to use in this screen.
General Settings
Enable
Select this to enable this DNS load balancing rule.
DNS Settings
Query Domain Name
Type up to 255 characters for a domain name for which you want the Zyxel Device to
manage DNS load balancing. You can use a wildcard (*) to let multiple domains match
the name. For example, use *.example.com to specify any domain name that ends with
“example.com” would match.
Time to Live
Enter the number of seconds the Zyxel Device recommends DNS request hosts to keep
the DNS entry in their caches before removing it. Enter 0 to have the Zyxel Device not
recommend this so the DNS request hosts will follow their DNS server’s TTL setting.
Query From Setting
IP Address
Select the name of an P address object, including geographic address object, of a
computer or a DNS server which makes the DNS queries upon which to apply this rule.
DNS servers process client queries using recursion or iteration:
• In recursion, DNS servers make recursive queries on behalf of clients. So you have to
configure this field to the DNS server’s IP address when recursion is used.
• In iteration, a client asks the DNS server and expects the best and immediate answer
without the DNS server contacting other DNS servers. If the primary DNS server cannot
provide the best answer, the client makes iteration queries to other configured DNS
servers to resolve the name. You have to configure this field to the client’s IP address
when iteration is used.
