Tips for Remotely Managing a Win2003 Server

In the past, I have been using Virtual Network Computing to connect to such servers or clients. However, using VNC requires opening certain specific ports on the firewall, which involves configuring the firewall and internal network, as well as setting up port forwarding on the firewall. Therefore, although VNC is free software with excellent cross-platform performance, it still requires me to spend a considerable amount of time on network accessibility.