http://www.linux.com/articles/28434
By Steven J. Vaughan-Nichols on March 25, 2003
With networking built in from the ground up and programs like telnet and SSH, Linux comes with remote control. But if you need to troubleshoot and administer Windows PCs from your Linux workstation or just run the occasional Windows program without worrying about Windows/Linux compatibility software, NetOp is the program for you. . .
> VNC
VNC is not secure.
However, you can wrap it in SSL using stunnel.
or if screen refresh is a big problem see:
tightvnc.org
Uses vnc base with jpg screen display and its open source…whehee
Scupper
To manage windoze boxes you have two options: rdesktop and vnc. I preffer rdesktop (RDP client for Linux, requires windows to be running terminal services) because it kicks ass! It also does somethign VNC can't do….lets you get to the login prompt. See with VNC even though its running as a service, unless someone is logged in on the windows box you can't controll the box. So if you just reboot the windows box running vnc service, you have to make sure it automatically logs someone in for vnc to kick in. rdesktop is awesome!
Rdesktop works with windows terminal services and has frontend GUI's.