ZyXEL 2WG 用户指南

 Chapter 22 DNS Screens

ZyWALL 2WG User’s Guide

Click Add in the System screen to open this screen. Use this screen to add an address record.
An address record contains the mapping of a fully qualified domain name (FQDN) to an IP 
address. Configure address records about the ZyWALL itself or another device to keep a 
record of DNS names and addresses that people on your network may use frequently. If the 
ZyWALL receives a DNS query for an FQDN for which the ZyWALL has an address record, 
the ZyWALL can send the IP address in a DNS response without having to query a DNS name 
server. See 

Figure 263   ADVANCED > DNS > Add (Address Record)

Name Server 

Record

A name server record contains a DNS server’s IP address. The ZyWALL can 

query the DNS server to resolve domain names for features like VPN, DDNS 

and the time server. 
When the ZyWALL needs to resolve a domain name, it checks it against the 

name server record entries in the order that they appear in this list. 
A “*” indicates a name server record without a domain zone. The default record 

is grayed out. The ZyWALL uses this default record if the domain name that 

needs to be resolved does not match any of the other name server records.
A name server record with a domain zone is always put before a record without 

a domain zone. 

#

This is the index number of the name server record.

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. 

From

This field displays whether the IP address of a DNS server is from a WAN 

interface (and which it is) or specified by the user. 

DNS Server

This is the IP address of a DNS server.

Modify

Click a triangle icon to move the record up or down in the list. 
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.

Insert

Click Insert to open a screen where you can insert a new name server record. 

Refer to 

 for information on the fields.

Table 134   ADVANCED > DNS > System