VBrick dme, Руководство администратора

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70 © Vbrick Systems, Inc.
Network address translation is the method by which private IP address are held and
referenced in a network translation table. It is common practice to hide an entire IP address
space, usually consisting of private IP addresses, behind a single IP address.
To avoid ambiguity in the handling of packets, a one-to-many NAT alters higher level
information such as TCP/UDP ports in outgoing communications and maintains a
translation table so that return packets can be handled correctly. The DME allows stream
access through a direct IP address, a Natted IP address, or both.
Domain Name Server

To access the Domain Name Server fields:
1. Navigate to
System Configuration
>
Network
>
Domain Name Server
section.
Field Description
NAT Public IP Address The public IP address in a network translation table.
Field Description
Primary Server IP Address This is the primary server used for DNS lookups. This
service will resolve a Fully Qualified Domain Name (FQDN)
into numerical IP addresses.
If the user interface pages are loading slowly, make sure this
is a valid IP address. If you are not using a DNS server, leave
this field blank. Please consult your Network Administrator
if you have questions.
Note: An invalid IP address will adversely impact the operation of
the user interface.
Note: DNS server addresses are automatically supplied if you
have Network DHCP enabled. Any changes to these
addresses will be overwritten at boot up if DHCP is enabled.
Secondary Server IP Address This is the secondary server used for DNS. It serves the
same purpose as the primary server, but will be used if the
primary server is unable to resolve the FQDN to an IP
address.