Managing DNS Settings
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Managing DNS Settings

The Domain Name System tab enables management of the system DNS configuration.

Host name

The name by which the host will be known on the subnetwork.

Domain name

The network domain in which the host resides.

Domain Name Servers

A list of DNS servers in order of preference (see the section called “Managing DNS Servers”).

Static hosts

A list of known hosts on the subnetwork system (see the section called “Managing Static (Known) Hosts”).

Managing DNS Servers

A computer running DNS matches up a fully qualified domain with a proper IP address. This is necessary because computers only understand the IP addresses. When a computer requests http://www.somedomain.com the DNS resolves this name to an IP-address such as 123.45.678.90.

The Domain Name Servers part of the Domain Name System tab enables easy management of the list. Server properties can be added, removed and edited. DNS records can be arranged in order of preference by selecting a record and promoting or demoting the record in the list using the Move Up or Move Down buttons as required.

Procedure 2.1. Adding a DNS server

  1. From the Domain Name Servers group click the Add button. The Add new DNS dialog is displayed.


    Adding a DNS server
  2. Enter the IP-address of the DNS server then click Add. The record is added to the DNS list.

Procedure 2.2. Editing a DNS server record

  1. From the Domain Name Servers group select a DNS record then click the Edit button. The Edit Server dialog is displayed.


    Editing a DNS server record
  2. Modify the IP-address then click OK. The record is updated to the DNS list.

Managing Static (Known) Hosts

The Static hosts list describes a number of hostname-to-address mappings for the TCP/IP subsystem. It is mostly used at boot time, when no name servers are running. On small, closed network systems, it can be used instead of Domain Name Servers.

By default, the Static hosts list contains some records describing the 'localhost' and a handful of special records for hosts that support IPv6. This still-experimental version of IP is destined to replace version 4.

Procedure 2.3. Adding Static Hosts

  1. Click the Add button. The Add new Static host dialog is displayed.


    Adding static hosts
  2. Enter the IP-address of the known host then click Add. The Add New Alias is displayed.


    Adding a static host
  3. Enter the name of the known host then click the Add button. If the known host has multiple aliases click the Add button again and enter another alias.

  4. When finished click OK to update the Static Hosts list.

Procedure 2.4. Editing Static Hosts

  1. Select a static host record from the list, then click the Edit button. The Edit Static Host dialog is displayed.


    Editing static hosts
  2. Perform any of the following tasks, then click OK to update the Static Hosts list.

    • To change the IP-address, enter a new IP-address, then click OK.

    • To add a new alias, click the Add button.

    • To change an alias value, select the alias record, then click Edit.

    • To remove an alias, select an alias record then click Remove.

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