ZyXEL Communications USG FLEX H Series - Page 365

Chapter 24 System
USG FLEX H Series User’s Guide
365
The following table describes the labels in this screen.
Table 179 System > DNS & DDNS > 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 Zyxel Device confirms you want to
remove it before doing so. Note that subsequent entries move up by one when you take this
action.
Hostname This is the name of the host.
Domain This is the host’s fully qualified domain name.
IP Address This is the IP address of a host.
CNAME Record This record specifies an alias for a FQDN. Use this record to bind all subdomains with the same
IP address as the FQDN without having to update each one individually, which increases
chance for errors. See CNAME Record (
Section 24.4.5 on page 367) for more details.
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 Zyxel Device confirms you want to
remove it before doing so. Note that subsequent entries move up by one when you take this
action.
Hostname This is the name of the host.
Domain This is the host’s fully qualified domain name.
Alias Name This displays the alias name.
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 Zyxel Device confirms you want to
remove it before doing so. Note that subsequent entries move up by one when you take this
action.
Hostname This is the name of the host.
Domain 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.
Domain Zone
Forwarder
This specifies a DNS server’s IP address. The Zyxel Device can query the DNS server to resolve
domain zones for features like VPN, DDNS and the time server.
When the Zyxel Device 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 Zyxel Device confirms you want to
remove it before doing so. Note that subsequent entries move up by one when you take this
action.