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http://openvpn.net/index.php/open-source/documentation/howto.html
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http://dangerousprototypes.com/docs/Common_Bus_Pirate_cable_pinouts
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https://github.com/cjbaar/LPD8806
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http://www.linuxjournal.com/content/tcpdump-fu?page=0,0
Use timer1 on Atmega
http://www.electronicsblog.net/exampl...-bit-hardware-timer-for-digital-clock
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http://www.teholabs.com/docs/knowledge:uartsaya
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http://www.ikeahackers.net
ssh web gateway
https://github.com/liftoff/GateOne
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http://www.worldometers.info