ZyXEL Communications 2 Plus User Manual

 Chapter 20 DNS

ZyWALL 2 Plus User’s Guide

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 

 for more on address records.

Figure 237   ADVANCED > DNS > Add (Address Record)

The following table describes the labels in this screen.  

Click Insert in the System screen to open this screen. Use this screen to insert a 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. A 
domain zone may also be included. 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.  

Table 115   ADVANCED > DNS > Add (Address Record)

FQDN

Type a fully qualified domain name (FQDN) of a server. An FQDN starts with a 

host name and continues all the way up to the top-level domain name. For 

example, www.zyxel.com.tw is a fully qualified domain name, where “www” is the 

host, “zyxel” is the second-level domain, and “com.tw” is the top level domain. 

IP Address

If this entry is for the WAN port on the ZyWALL, select WAN Interface.
For entries that are not for the WAN port, select Custom and enter the IP address 

of the host in dotted decimal notation.

Enable Wildcard

Select the check box to enable DNS wildcard.

Apply

Click Apply to save your changes back to the ZyWALL.

Cancel

Click Cancel to exit this screen without saving.