Chapter 33 System
NXC5200 User’s Guide
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33.5.3 Address Record
An address record contains 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 is a fully qualified domain name, where “www” is the host, “zyxel”
is the second-level domain, and “com” is the top level domain.
mail.myZyXEL.com.tw is also a FQDN, where “mail” is the host, “myZyXEL” is the
third-level domain, “com” is the second-level domain, and “tw” is the top level
domain.
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 NXC 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.
IP/FQDN
This is the IP address or Fully-Qualified Domain Name (FQDN) of a mail
server that handles the mail for the domain specified in the field above.
Service Control
This specifies from which computers and zones you can send DNS
queries to the NXC.
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 NXC 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 the index number of the service control rule. The ordering of your
rules is important as rules are applied in sequence.
The entry with a hyphen (-) instead of a number is the NXC’s (non-
configurable) default policy. The NXC applies this to traffic that does not
match any other configured rule. It is not an editable rule. To apply
other behavior, configure a rule that traffic will match so the NXC will
not have to use the default policy.
Zone
This is the zone on the NXC the user is allowed or denied to access.
Address
This is the object name of the IP address(es) with which the computer
is allowed or denied to send DNS queries.
Action
This displays whether the NXC accepts DNS queries from the computer
with the IP address specified above through the specified zone
(Accept) or discards them (Deny).
Table 179
Configuration > System > DNS (continued)
LABEL
DESCRIPTION