ZyXEL Communications Vantage CNM 2.3 User Manual page 231

The following table describes the labels in this screen.
Table 90 Device Operation > Device Configuration > Advanced > DNS > Name
Server Record > Add/Edit
LABEL
Domain Zone
DNS Server
Apply
Cancel
Vantage CNM User's Guide
DESCRIPTION
This field is optional.
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. For example, whenever the device receives needs
to resolve a zyxel.com.tw domain name, it can send a query to the
recorded name server IP address.
Leave this field blank if all domain zones are served by the specified DNS
server(s).
Select the DNS Server(s) from ISP WAN 1 or DNS Server(s) from
ISP WAN 2 radio button if your ISP dynamically assigns DNS server
information. The fields below display the (read-only) DNS server IP
address(es) that the ISP assigns. N/A displays for any DNS server IP
address fields for which the ISP does not assign an IP address. N/A
displays for all of the DNS server IP address fields if the device has a fixed
WAN IP address.
Select Public DNS Server if you have the IP address of a DNS server.
The IP address must be public or a private address on your local LAN.
Enter the DNS server's IP address in the field to the right.
Public DNS Server entries with the IP address set to 0.0.0.0 are not
allowed.
Select Private DNS Server if the DNS server has a private IP address
and is located behind a VPN peer. Enter the DNS server's IP address in the
field to the right.
With a private DNS server, you must also configure the first DNS server
entry in the DNS LAN screen to use DNS Relay.
You must also configure a VPN rule since the device uses a VPN tunnel
when it relays DNS queries to the private DNS server. The rule must
include the LAN IP address of the device as a local IP address and the IP
address of the DNS server as a remote IP address.
Private DNS Server entries with the IP address set to 0.0.0.0 are not
allowed.
Click this to save your changes back to the device.
Click this to exit this screen without saving.
Chapter 7 Device Advanced Settings
231