Dear SCO Customer,

The enclosed Support Level Supplement (SLS) ODA377A addresses the following
issues:

        1. SLS ODA377A prevents non-root users from gaining root access
           via scosession, scoterm, xterm, and clean_screen.

        2. The logging feature of scoterm and xterm was disabled in
           SCO Open Desktop Release 3.0.  SLS ODA377A re-introduces
           this feature in a secure manner.

SLS ODA377A will install on:

    SCO Open Desktop Release 2.0
    SCO Open Desktop Release 3.0

SLS ODA377A is custom(ADM) installable and removable. 

SLS ODA377A consists of a single floppy volume.

                         INSTALLATION INSTRUCTIONS
                         =========================

To install SLS ODA377A, use custom(ADM) and take the following steps:

1.  Enter the command:

    custom

    NOTE:  If you are installing SLS ODA377A on your second floppy drive,
           enter the following command:

    custom -m /dev/rinstall1

2.  The main custom menu will appear.  Press <Return> to select "Install".

3.  A window of options opens in the lower right-hand corner of the screen.
    Press <Return> again to select "A New Product" from among these options.

4.  The next screen highlights the "Entire Product" option.  Press <Return> 
    to select this option.

5.  Custom prompts you to insert Floppy Volume 1.  Insert SLS ODA377A and
    press <Return>.  You will see the message:

         Installing custom data files...

    followed by:

        Executing Product Prep Script.
   
6.  The Prep Script will check the release of the operating system.  If
    the operating system is invalid, a message will be displayed indicating
    that the installation has been aborted, followed by the prompt:

        Press any key to continue

    Press <Return> and custom will display "ERROR" in the top right-hand corner
    of the screen and: 

        Error: Init script failed

    in the bottom left-hand corner.  Press <Esc> to be returned to the 
    "Products Currently Installed" screen of custom(ADM).

7.  Custom will briefly display the message "Creating file list ..." in
    the top left-hand corner of the screen.

8.  You will be prompted to: 

        Insert: Security Enhancements For Open Desktop 2.0 and 3.0
                Floppy Volume 1

    into the floppy drive.  Ensure that the correct volume is in the 
    floppy drive and select "Continue".

9.  Custom will display the message:

        Extracting files ...

    followed by:

        Executing Security Enhancements For Open Desktop 2.0 and 3.0 Init Script

10. After the Init Script has executed, custom then displays:

        Press any key to continue

    Press <Return>.

11. Custom will display the message "Checking file permissions..."
    before you are returned to the "Products Currently Installed" screen of 
    the custom(ADM) utility.  Press q to quit custom, or use the left arrow 
    key to select "Quit" and press <Return>.


                         REMOVAL INSTRUCTIONS
                         ====================

To remove SLS ODA377A, use custom(ADM) and take the following steps:

1.  Enter the command:

    custom

    NOTE:  If you are installing SLS ODA377A on your second floppy drive,
           enter the following command:

    custom -m /dev/rinstall1

2.  Use the left/right arrow keys to select "Remove" and press <Return>.

3.  A window of options opens.  Use the up/down arrow keys to select:

        Security Enhancements For Open Desktop 2.0 and 3.0

    from the list of options and press <Return>.

4.  A "Security Enhancements For Open Desktop 2.0 and 3.0" window opens.
    Use the up/down arrow keys to select the "ALL" option and press
    <Return>.

5.  Custom will then ask:

        Do you wish to continue?        [Yes]   No

    Select "Yes" and press <Return>.

6.  The removal script will then validate the operating system release and
    version and check for an SCO Open Desktop environment.  If the operating 
    system is not valid or the SLS is not removable you will be returned to 
    custom(ADM) with an error.

7.  custom(ADM) presents you with the prompt:

        Press any key to continue
        
    Press <Return>.

8.  Custom will display the message "Creating files list ..." in the top
    left-hand corner of the screen.

9.  Custom will briefly display the message "Removing files ..." in the
    top left-hand corner of the screen.

10. You are then returned to the "Products Currently Installed" screen of the
    custom(ADM) utility.  Press q to quit custom, or use the left arrow key
    to select "Quit" and press <Return>.


If you have any questions, please call our SCO Customer Services Department
at (408) 425-4726.  SCO Customer Service is available Monday through Friday,
6:00 A.M. to 5:00 P.M., Pacific Time.

We appreciate your business.

SCO Support Services