This is not exactly my area of speciality, but could you use iptables to limit incoming connections to your Node.js port? http://www.cyberciti.biz/tips/howto-l

This is not exactly my area of speciality, but could you use iptables to limit incoming connections to your Node.js port? http://www.cyberciti.biz/tips/howto-limit-linux-syn-attacks.html http://www.cyberciti.biz/tips/howto-limit-linux-syn-attacks....