SocketBlock ActiveX Firewall SDK for Windows 2000 Use SocketBlock to add firewall capabilities to applications that will operate on the internet to ensure that your application is safe from various attacks, and that once identified, an intruder can be ... Cost: $695 Buy full version       Trial version       Publisher: DataWizard Technologies     Descriptions SocketBlock ActiveX Firewall SDK for Windows 2000: Use SocketBlock to add firewall capabilities to applications that will operate on the internet to ensure that your application is safe from various attacks, and that once identified, an intruder can be blocked from accessing the system without incurring high CPU usage.