Shut down idle computers on your network automatically (IBM developerWorks)

Nathan Harrington discusses. automating remote shutdowns for power savings on IBM developerWorks. "Recent pushes for "green" technology focus mostly on talk, with little action for the typical home- or small-office environment. Many users leave their systems online continuously through laziness or ignorance, resulting in a significant source of power consumption, as well as an additional vector for malware propagation. The tools and code presented here allow you to find those inactive systems and securely start the shutdown process. With a Linux® box monitoring your network connections using Argus and some custom Perl code, any system that supports Perl can be set to be remotely shut down when a centralized set of inactivity rules are met."

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