Chapter 41 System
UAG5100 User’s Guide
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The following table describes the labels in this screen.
Table 189
Configuration > 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.
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 UAG 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
Forwarder
This specifies a DNS server’s IP address. The UAG can query the DNS server to resolve
domain zones for features like VPN, DDNS and the time server.
When the UAG 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 UAG 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 UAG 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 UAG 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 UAG sends DNS queries to the entry’s DNS server.
If the UAG connects through a VPN tunnel, tunnel displays.
MX Record (for My
FQDN)
A MX (Mail eXchange) record identifies a mail server that handles the mail for a 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 UAG 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 MX record.
Domain Name
This is the domain name where the mail is destined for.