SmoothWall Corporate Server is an extremely effective way of turning a PC into a dedicated hardware firewall sitting on its own hardened operating system. The company has now released a bolt-on to the Corporate Server to provide even more protection - Smooth Guardian, a multi-layered content filtering package.
At the heavy duty end of the market, SSH Secure Shell for Windows Server offers enough security for even the most paranoid network administrator. Already recognized as one of the most popular applications for creating secure sessions in Unix, it is now available for Windows, replacing such protocols as Telnet or FTP with a hardened connectivity solution for those businesses that require more than usual security for data transfer.
TFS Technology has taken a holistic approach to the whole subject of internet and email security, and the result is the extremely powerful Secure Messaging Server. The server acts as a firewall, ensuring that infected inbound emails don't get anywhere near your network.
Installation and configuration (Windows only) are simple and an application, TFS Administrator, does most of the hard work for you. This application is used for all configuration tasks, unless you want to do this remotely, in which case another product, TFS Secure Messaging Manager, allows this through a web browser. The Manager is also responsible for the security functions of the product.