I am installing a Windows 2003 Small Business Server on a relatively small network of 14 clients. The network itself access the internet via an ISDN router. I will be setting DNS/DHCP services on the server and directly allow the clients access to the router as a gateway. I am looking for an appliance to place between the router and internal network that can handle antivirus, firewall, as well as keep a log of visited websites if there is such a device.
Big picture is that I want to be able to monitor internet usage for each client while at the same time not put my server as a direct tie to the router.