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Chapter 43 System
ZyWALL USG 1000 User’s Guide
581
Figure 420 System > DNS
The following table describes the labels in this screen.
Table 200 System > DNS
LABEL DESCRIPTION
Address/PTR
Record
This record specifies the mapping of a fully qualified domain name (FQDN) to an IP
address. An FQDN consists of a host and domain name. For example,
www.zyxel.com.tw is a fully qualified domain name, where “www” is the host,
“zyxel” is the third-level domain, “com” is the second-level domain, and “tw” is the
top level domain.
# This is the index number of the address/PTR record.
FQDN This is a host’s fully qualified domain name.
IP Address This is the IP address of a host.
Add icon Click the Add icon in the heading row to open a screen where you can add a new
address/PTR record. Refer to Table 201 on page 583 for information on the fields.
Click the Edit icon to go to the screen where you can edit the record.
Click the Delete icon to remove an existing record. A window display asking you to
confirm that you want to delete the record. Note that subsequent records move up
by one when you take this action.
Domain Zone
Forwarder
This specifies a DNS server’s IP address. The ZyWALL can query the DNS server
to resolve domain zones for features like VPN, DDNS and the time server.
When the ZyWALL needs to resolve a domain zone, it checks it against the domain
zone forwarder entries in the order that they appear in this list.
# This is the index number of the domain zone forwarder record. The ordering of your
rules is important as rules are applied in sequence.
Domain Zone A domain zone is a fully qualified domain name without the host. For example,
zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified domain
name.
A “*” means all domain zones. The default record is not configurable. The ZyWALL
uses this default record if the domain zone that needs to be resolved does not
match any of the other domain zone forwarder records.