GB-OS FIREWALL SOFTWARE
                            VERSION 3.7.2
                            RELEASE NOTES

Author:     Global Technology Associates, Inc.
Product:    GB-OS version 3.7.2
Date:       15 December 2005

-------------------------------------------------------------------------
GB-OS version 3.7.2 includes support for the GB-2000X Firewall Appliance
as well as updated versions of the following GTA products and utilities:

    GB-OS                       3.7.2
    GBAdmin                     3.7.1

Release notes are located on the installation CD and on GTA's web site.

For more about upgrading related software, see individual product
release notes.

-------------------------------------------------------------------------
CONTENTS
Release Notes sections are categorized first by feature addressed, then
by the type of change.

1.  INSTALL NOTES

2.  SERVICES

3.  SYSTEM ACTIVITY

4.  SYSTEM

5.  RELEASE NOTES HISTORY

-------------------------------------------------------------------------

1.  INSTALL NOTES

    1.1 Entering New Activation Codes
    
        If upgrading from 3.6.2 or below, new activation codes must be
        entered. GB-OS version 3.7.2 is available at no charge to
        customers with a GTA support contract or annual maintenance
        agreement, or who purchased a GTA firewall operating on GB-OS
        version 3.7.0 or higher. Other users should contact their local 
        GTA channel partner or email sales@gta.com for information and
        pricing of upgrade options.

    1.2 Upgrading Hard Drive GB-Ware Installations from 3.5.x to 3.7.2

        When upgrading a hard drive GB-Ware firewall from version 3.5.x 
        to 3.7.2:

            1.  Back up the firewall configuration.
            2.  Reinstall the firewall software completely from the CD.
            3.  Restore the configuration.

        The GB-Ware CD image (ISO-9660) is available for download from 
        GTA's Online Support Center 
        (https://www.gta.com/support/center/login/). Failure to reinstall
        from CD may cause hard drive geometry errors that prevent the 
        upgrade.

    1.3 SSL Certificate Replacement

        Version 3.7.x will install a new default security/SSL
        certificate. Some browsers, including Netscape and Mozilla,
        will not recognize the new certificate if the original has
        never been replaced. If you are unable to log on to the
        firewall after upgrading, delete the browser's cached security
        certificate, then close and restart your browser before
        reattempting remote access to your firewall.
        
2.  SERVICES

    2.1 Bug Fixes
    
        2.1.1   Mail Sentinel now uses all updated rules. 
                GBSS3720003065
                
        2.1.2   Memory leak in Mail Sentinel Anti-Spam resolved.
                GBSS3720003079
                
3.  SYSTEM ACTIVITY

    3.1 Bug Fixes
    
        3.1.1   Non-management events are no longer logged as being of
                type management.
                GBSS3720003058


4.  SYSTEM

    4.1 Bug Fixes
    
        4.1.1   Tunnels using PPPoE with Source Routing enabled no
                longer crash when accessed.
                GBSS3720003062
                
        4.1.2   The firewall no longer crashes when form data is
                submitted and the firewall is in bridging mode with Surf
                Sentinel configured to run using a transparent proxy.
                GBSS3720003140
                
        4.1.3   Hardened IKE daemon to address potential denial of
                service (DoS) vulnerablity (Cert VU#226364)
                GBSS3720003148


5.  RELEASE NOTES HISTORY

    5.1     Previous Release Notes
            These notes cover the 3.7.2 release of GB-OS. Release notes 
            for previous versions can be found at GTA's web site, 
            http://www.gta.com.

-------------------------------------------------------------------------
Global Technology Associates, Inc.
3525 Lake Lynda Drive, Suite 109
Orlando, Florida 32817
www.gta.com
407.380.0220