Turn on remote computer via Wake-On-LAN [CentOS 6]

Here’s how you can wake up (turn on) a remote pc using the Wake-On-LAN function of its network card: you just have to issue a command against the remote machine MAC Address.
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Setting up two-factor authentication SSH on Fedora 16 x86_64 (with Google Authenticator)

Today we’ll take a look on how to setup SSH to take advantage of the one-time passcode support provided by Google Authenticator package.
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Enabling Security tab on Windows XP

On Windows XP if you are not joined to a domain there will be no Security tab option available.
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