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for systems that acts as dedicated zoneminder box would be useful a button to shutdown the system from the web page (maybe using sudo or a suexec cgi), what do you think about?
If it was there, I would have to remove it. The thought of being able to shut down a security server from a web page just frightens me to the core of my being!
I have to agree with Lee, Also there would be no way to turn the machine back on without phsicaly being at the machine unless you trust and setup WOL. This would be a bad security risk.
Then I would suggest installing webmin, but if the problem it people turning it off, this will not help you turn it on nor will ssh or anything else other than pushing the button.
However, I do have my BIOS settings on all security systems set to 'power on resume' if they pull the plug, and 'power on time' as well. Any of my servers off at 6:00am turn on. This has only been a 'bad thing' once, and that was a late night and a drive array failure...