Hopper has an IBM service processor card. You can access it at
https://hopper-sp.hcoop.net/
The username is "root" and the password is the same as mire's root password (which is also the password for all other service processors).
Service Processor Information at Wikipedia
1. Remote Power On/Off
You can use hopper's service processor to power it on and off. To do so, go to http://hopper-sp.hcoop.net/, log in as user "root" (same password as hopper's root password). Then click "Power/Restart" on the left hand side.
2. Remote Keyboard/Video
This isn't working right now; I havent figured out why --Adam
You can use hopper's service processor control the keyboard and mouse, independently of our KVM units. To do so, go to http://hopper-sp.hcoop.net/, log in as user "root" (same password as hopper's root password), and click "Remote Control". A java applet will open. I strongly recommend using Firefox; the web interface is pretty ancient and not very browser-compatible.
IMPORTANT: the service processor's remote control functionality uses a proprietary UDP protocol. Make sure you are not on a network that filters UDP packets (many NATs and corporate firewalls do this).