Chapter 37 System

The following table describes the labels in this screen.

Table 179 Configuration > System > DNS

LABEL

DESCRIPTION

Address/PTR

This record specifies the mapping of a Fully-Qualified Domain Name (FQDN) to an IP

Record

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.

 

 

Add

Click this to create a new entry.

 

 

Edit

Double-click an entry or select it and click Edit to be able to modify the entry’s settings.

 

 

Remove

To remove an entry, select it and click Remove. The ZyWALL confirms you want to

 

remove it before doing so. Note that subsequent entries move up by one when you take

 

this action.

 

 

#

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.

 

 

Domain Zone

This specifies a DNS server’s IP address. The ZyWALL can query the DNS server to

Forwarder

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.

 

 

Add

Click this to create a new entry. Select an entry and click Add to create a new entry after

 

the selected entry.

 

 

Edit

Double-click an entry or select it and click Edit to be able to modify the entry’s settings.

 

 

Remove

To remove an entry, select it and click Remove. The ZyWALL confirms you want to

 

remove it before doing so. Note that subsequent entries move up by one when you take

 

this action.

 

 

Move

To change an entry’s position in the numbered list, select the method and click Move to

 

display a field to type a number for where you want to put it and press [ENTER] to move

 

the rule to the number that you typed.

 

 

#

This is the index number of the domain zone forwarder record. The ordering of your rules

 

is important as rules are applied in sequence.

 

A hyphen (-) displays for the default domain zone forwarder record. 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.

 

 

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.

 

 

Type

This displays whether the DNS server IP address is assigned by the ISP dynamically

 

through a specified interface or configured manually (User-Defined).

 

 

DNS Server

This is the IP address of a DNS server. This field displays N/A if you have the ZyWALL

 

get a DNS server IP address from the ISP dynamically but the specified interface is not

 

active.

 

 

Query Via

This is the interface through which the ZyWALL sends DNS queries to the entry’s DNS

 

server. If the ZyWALL connects through a VPN tunnel, tunnel displays.

 

 

MX Record (for My

A MX (Mail eXchange) record identifies a mail server that handles the mail for a

FQDN)

particular domain.

 

 

Add

Click this to create a new entry.

 

 

Edit

Double-click an entry or select it and click Edit to be able to modify the entry’s settings.

 

 

Remove

To remove an entry, select it and click Remove. The ZyWALL confirms you want to

 

remove it before doing so. Note that subsequent entries move up by one when you take

 

this action.

 

 

 

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ZyWALL 110/310/1100 Series User’s Guide