I have a network that runs 2 servers. Both are Server 2003 Standard. One is a DC. The other is a Terminal server running Citrix. On the Terminal Server, Citrix works, but I cannot RDP to the TS. I have opened a command line and Telneted localhost 3389, but could not connect. The only ports I have successfully been able to telnet to are 21 and 80. I have no firewall service running. I uninstalled the only known antivirus to eliminate that as a cause. I cannot see if there is any other installed program that may be blocking virtually all ports.