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

# TCP/IP Configuration Notebook Online Help

### Configure TFTPD Access Page

Use this page to configure and enable remote users to access the TCP/IP server TFTPD on this computer. The server uses Trivial File Transfer Protocol to make data on this computer available to the remote user's computer. TFTP lets you define the remote computer's read, write, drive, and directory accesses. Like FTP, TFTP can transfer files in ASCII or binary form, but unlike FTP it can only transfer files one at a time and does not provide subcommands; for example, commands that list or change directories at a remote host. TFTP uses the less-reliable User Datagram Protocol (UDP), rather than TCP/IP, for data transfer and therefore should not be considered an equivalent substitute for FTP.

TFTP information is saved in TFTPAUTH.

The selections and fields for this page are:

Access... list box
  This box lists all the local directories, along with their associated read-write permissions, being made available to other computers with TFTPD access. Each directory record in the Access list has an associated list of remote computers authorized to read or write data in that directory. These authorized remote computers are identified in the Host Names... list box.

  When you highlight or select a directory record in the Access list box, the remote computers that can read or write to that directory appear in the Hosts Names... list box.

Host Names... list box
  This box lists the names of remote computers authorized to use the TFTP server to access local directories. At any one time, the Hosts Names box lists only those computers that can read or write to the directory highlighted in the Access... list box.

  To view other authorized computers you must select other directories in the Access... list box. When another directory is selected, its related list of authorized computers appears in the Host Names list box.

The push buttons for the Access... list box are:

Add
  Insert an entry into the list box. When you click Add, the TFTP Directory Entry window appears. Use this window to add a directory and the associated read/write access permissions intended for use only by those host computers authorized in the Host Names list.

  The fields on this window are:

  Directory

    Specify the directory you are providing access to for each individual host.

    Notes:

    - Specify only one directory.
    - Specify a maximum of 255 characters.
    - Spaces are not permitted in this field.
    - Entries are not case-sensitive.

    Examples:

        E:\TFTP\servinfo\oldstuff
        G:\TFTP\NEWINFO\goodinfo

  Read Authorities

    Select the Read-Only Access button to grant read-only access to any remote computers you intend to authorize for the specified directory.

    Select the Read/Write Access button to grant read/write access to any remote computers you intend to authorize for the specified directory.

    After you have completed the entries in this window and saved them by clicking OK, return to the Access... list box and select the directory you just added. Then click the Add button for the Host Names list box to grant directory access to a remote computer. Complete the entry in the Rhosts Entry window and click OK. Each time you add a host, it will appear in the Host Names list box whenever you select its associated directory in the Access list.

  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 an entry selected from the list box. When you click Change, the TFTP Directory Entry window appears. Use this window to modify a directory or the associated read/write permissions intended for use only by those host computers authorized in the Host Names list.

  The fields on this window are:

  Directory

    Specify the directory you are providing access to for each individual host.

    Notes:

    - Specify only one directory.
    - Specify a maximum of 255 characters.
    - Spaces are not permitted in this field.
    - Entries are not case-sensitive.

    Examples:

        E:\TFTP\servinfo\oldstuff
        G:\TFTP\NEWINFO\goodinfo

  Read Authorities

    Select the Read-Only Access button to grant read-only access to any remote computers authorized for the specified directory.

    Select the Read/Write Access button to grant read/write access to any remote computers authorized for the specified directory.

    After you have modified the entries in this window and saved them by clicking OK, return to the Access... list box and select the directory you just modified. Then view the Host Names list box to verify that only the intended remote computers have access to the modified directory.

  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.

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.

The push buttons for the Hosts Names... list box are:

Add
  Insert an entry into the list box. When you click Add, the TFTP Host Names Entry window appears. Use this window to grant a remote computer access, by way of the TFTP server, to the directory selected in the Access... list box.

  The fields on this window are:

  Host Name

    Type the host name of the remote computer you are authorizing to access the selected directory, by way of the TFTP server.

    Specify only the hostname portion of the fully qualified host name of your computer. A fully qualified host name includes both host and domain names, as follows:

        poe.eng.mit.edu

    The host name is poe and the domain name is eng.mit.edu.

    For the current field enter only the host name, which in this example would be:

        poe

  Additional push buttons for these windows 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 an entry selected from the list box. When you click the Change push button, the TFTP Host Names Entry window appears. Use this window to change the name of a remote computer that has access, by way of the TFTP server, to the directory selected in the Access... list box.

  The fields on this window are:

  Host Name

    Type the host name of the remote computer you are authorizing to access the selected directory, by way of the TFTP server.

    Specify only the hostname portion of the fully qualified host name of your computer. A fully qualified host name includes both host and domain names, as follows:

        poe.eng.mit.edu

    The host name is poe and the domain name is eng.mit.edu.

    For the current field enter only the host name, which in this example would be:

        poe

  Additional push buttons for these windows 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.

The push buttons for this page are:

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:

User Access
  Go to the Configure User Security page.

RSHD
  Go to the Configure RSHD Access page.

TFTPD
  Go to the Configure TFTPD Access page.

Admin PW
  Go to the IBM TCP/IP Administrator Password page.

TFTPD Authorization
  Go to the TFTPD Authorization page.

How Do I?

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

- Configuring TFTPD Access

- Adding a TFTP Directory Entry

- Changing a TFTP Directory Entry

- Deleting a TFTP Directory Entry

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