Internet UTM Firewall Appliances developed by Global Technology Associates, Inc, GTA include IPS, VPN, Virus Blocking, Spam Filtering and URL Filtering.
Unified Threat Management - Support | GTA, Inc.
Please Choose Documentation Version
Documentation for GB-OS Version 5.0.0
Secure Firewall OS
Documentation for GB-OS Version 4.x.x
Secure Firewall OS
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GTA released GB-OS 5.0 in June 2007. This new operating system offers IPS and many exciting new features. If you have updated your GTA firewall to GB-OS 5.0 (or higher) please select the GB-OS 5.0 icon above. It will provide you with GB-OS 5.0 documentation and updated documentation for GTA's products and features based on utilization with GB-OS 5.0.

If you have not yet updated to GB-OS 5.0 and are running an older version of GB-OS on your firewall, such as GB-OS 4.0 or earlier, please select the GB-OS 4.0 icon above. The documentation provided here will assist you with operation of your firewall and associated features running pre-GB-OS 5.0 versions.
Looking for documentation for previous GB-OS versions? Click here.

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'GB-OS', 'Surf Sentinel', 'Mail Sentinel' and 'GB-Ware' are registered trademarks of Global Technology Associates, Incorporated. 'GB Commander' is a trademark of Global Technology Associates, Incorporated. 'Global Technology Associates' and 'GTA' are service marks of Global Technology Associates, Incorporated.