I'm wondering is there any alternatives to a network KVM switch? I'm looking to use one on my home machine while away. I'd be using it on 1 or 2 machines with Fedora / Windows XP/7.
Well, you can set up linux to connect the console to the serial port (and I think there are ways to make this work with USB, but not sure), and many ups can be controlled from another computer, so if one is up, you can force a reboot.
VNC may also be what you are looking for.
What do you want to be able to do?