Copyright (C) 1997, 1998 by International Business Machines Corporation

# TCP/IP Configuration Notebook Online Help

### Configure Hosts Information Page

Use the Configure Hosts Information page to maintain entries in the list of hosts you access without a name server.

The selections on this page are:

Hosts list box

  This box lists internet addresses (IP addresses) and host names for hostname resolution if a name server is not available or the host is not identified to the name server.

  For each entry in the Hosts list, you can define the following:

  - IP address
  - Host name
  - Alias
  - Comment

  A HOSTS file containing this information is saved in the directory specified by the SET ETC= environment variable, which is set in the CONFIG.SYS file.

Look through Hosts List before Going to Name Server

  Check this box if you want the host names in the HOSTS file to be searched before querying the name servers, to resolve host names from the IP addresses or the IP addresses from the host names in the RESOLV2 file.

  When this box is checked, the following environment variable is added to your CONFIG.SYS file:

      SET USE_HOSTS_FIRST=1

  You will have to restart your computer for this change to take effect.

The push buttons on this page are:

Add
  Insert an entry into the list box. When you click Add, the Hosts Entry window appears. Use this window to insert your new Hosts list entry.

  The fields on this window are:

  IP Address

    Specify the 32-bit dotted-decimal notation internet protocol (IP) address for the host you want to access without a name server. For example, 9.67.43.126 is an IP Address. This field is required.

  Host Name

    Specify the name of the host that corresponds to the entry in the IP Address field. This field is required.

  Alias

    Specify an alternate host name for the host that corresponds to the entry in the IP address field. You can have more than one alias. This field is optional.

  Comment

    Specify a description of up to 256 characters for this entry. This field is optional.

  Additional push buttons for this window are:

  OK
    Close the window and save any changes.

  Cancel
    Close the window and discard any changes.

  Help
    Get help information for this notebook page.

Change
  Modify a Hosts list entry selected from the list box. When you click Change, the Hosts Entry window appears.

  The fields you can change from this window are:

  IP Address

    Specify the 32-bit dotted-decimal notation internet protocol (IP) address for the host you want to access without a name server. For example, 9.67.43.126 is an IP address. This field is required.

  Host Name

    Specify the name of the host that corresponds to the entry in the IP Address field. This field is required.

  Alias

    Specify an alternate host name for the host that corresponds to the entry in the IP Address field. You can have more than one alias. This field is optional.

  Comment

    Specify a description of up to 256 characters for this entry. This field is optional.

  Additional push buttons are:

  OK
    Close the window and save any changes.

  Cancel
    Close the window and discard any changes.

  Help
    Get help information for this notebook page.

Delete
  Erase the list box entry you selected, which will be displayed in a Delete window. You cannot modify the displayed entry; click OK to delete it, or Cancel to close the window without deleting.

Undo
  Remove any changes made since you last accessed this page.

OK
  Close the TCP/IP Configuration Notebook and save all changes made since opening it.

Cancel
  Close the TCP/IP Configuration Notebook and discard any changes made since opening it.

Help
  Get help information for this notebook page.

The subtabs on this page are:

Name Resolution
  Go to the Configure Name Resolution Services page.

Hosts
  Go to the Configure Hosts Information page.

How Do I?

For a step-by-step description of key tasks you can do from this page, go to:

- Configuring Hosts Information

- Adding a Hosts Entry

- Changing a Hosts Entry

- Deleting a Hosts Entry

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