Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Chapter 11: DNS (Domain Name System)
Configuring hosted DNS servers
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2 [Conditional] If you are modifying a zone, do the following:
a In the Master Zones area, select the zone you want to modify.
b To add a host to the selected zone, click Add Entry. If you are adding a
host to a forward lookup zone, see “Adding a new forward lookup entry”
on page 335 for details. If you are adding a host to a reverse lookup
zone, see “Adding a new reverse lookup entry” on page 336.
c To delete a host from the selected zone, click Delete Entry. See
“Deleting a host entry from a zone” on page 336 for details.
3 [Conditional] If you are modifying a host in a reverse lookup zone, the
following two fields appear:
• Name (Host portion of IP): This field appears only if a host is selected in
the list. The field displays the host portion of either the IP address or of
the fully-qualified domain name of this entry. You cannot modify this
field. If you need to change the host name you must delete the entry
from the list, then add the entry back using the new name.
• Fully-Qualified Domain Name: This field displays the domain name of
the host. You can modify this field by typing in a new value. Be sure to
type the fully-qualified domain name of the host.
Note: The Name field and the Fully-Qualified Name Entry field collectively
define a PTR Record for the selected reverse lookup zone. The PTR record is
used in a Reverse Addresses table and maps an IP address to a host name.
4 [Conditional] If a host in a forward lookup zone is selected, the following
fields appear:
• Entry Name: This field defines the host portion of the fully-qualified
domain name of this entry.
• A Record IP: This field defines a DNS A record (an Address record),
which is used to map host names to IP addresses. In this case the field
displays the IP address of the selected host. You can modify this field by
typing in a new value. The address you specify must be entered using
standard dotted quad notation (for example 172.14.207.27).
• CNAME Rec: This field defines a DNS CNAME record, which is used to
map an alias to its canonical name.The field, if populated, displays the
name of the Canonical Record of the selected host. You can modify this
field by typing in a new name. The name you specify must be entered
using the fully-qualified primary name of the domain.
Important:A host in a forward lookup zone requires either an A Record or a
CNAME Record.
• TXT Record: This field allows you to enter comments or additional
information about this zone, such as sender id information.