A couple of days ago, Microsoft released a security bulletin regarding a vulnerability in the DNS server component of Windows Server 2000 and 2003. In it, a remote attacker can cause the DNS server system service to spawn a shell that one can then connect to and execute commands because there is a bug in the RPC (Remote Procedure Call) interface. Ordinarily, Windows is designed to be operated from the GUI that we all know and love, but if you open a command shell, there's an excellent suite of command line utilities that can perform the same operations, usually much …