I am runing Windows XP on some ancient Dell Optiplex machine, and I use PrivateFirewall for securing my system and filtering ports with best results so far, at least as far as a beginner like myself can get. Still, there is one port that PrivateFirewall cannot filter, it is closed but not filtered, and I have no idea how to adjust settings in PrivateFirewall to include this port in my firewall configuration. The port I want to filter is port 3389/tcp aka IANA registered for Microsoft WBT Server, used for Windows Remote Desktop and Remote Assistance connections (RDP - Remote Desktop Protocol). All the other ports are filtered by PrivateFirewall which added during the installation process a nice and quite useful Privacyware Filter Driver to my network configuration. My ISP provider forces us, its clients, to use RASMAN service and the RASPPPOE protocol, and I suspect this to be the cause for my failure in filtering port 3389/tcp. I cannot disable rasman service or rasauto service because these services along with telephony service are needed for the internet connection to work. Is there a solution out there for me to be able to filter this port 3389/tcp? I don't run a server, I am just an average home user, and it is not imperative to find a solution to this problem but I don't mind learning new things especially when it comes to firewalls and network security which are topics way out of my league.