How to Log Off a Computer Via the Internet

There are a few ways to shutdown a computer remotely, but a lot of those methods require logon details (username and password).
 

Steps

1.
Use the shutdown command. A Windows XP computer can be remotely shut down, using the shutdown command. Open a command prompt, and type:
  • shutdown \\
  •  Example: shutdown \\64.23.132.1 or shutdown \\kitchencomputer (you must use an ip address unless the computer is on the same network as you, as the computer name will not resolve over the internet)
2.
Write a program to do it. If you know how to use a programming language compiler, you can compile and execute exploits to take advantage of security flaw of software or the operating system on the computer. When an exploit is successfully executed you can run a command remotely, that includes the shutdown command mentioned previously. In this case though, you would simply enter "shutdown" (without quotes).




Warnings

  • Most websites/corporate computers have either patched or block obvious/easy methods to execute commands remotely, and of course attempting to do so is illegal.
  • Newer versions of Windows XP (and Vista, Windows 7) require by default that you provide a username and password when attempting to execute the shutdown command.