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Trustix Enterprise FirewallScreenshot 

 

Free Trustix Enterprise Firewall - the only WYSIWYG (What You See Is What You Get) firewall in the world. A fully-featured packet-filtering router, Trustix Enterprise Firewall has advanced capabilities including the intuitive Xsentry graphical user interface (GUI) for visualizing and editing the firewall policy and behaviour that provides total security for Enterprise Networks

Screenshot of Trustix Enterprise Firewall