Recently we had an apache server which was responding very slowly due to SYN flooding. The workaround for this was to enable tcp_syncookies (net.ipv4.tcp_syncookies=1 in /etc/sysctl.conf). I posted a ...
My server (http://monitor.wingify.com/munin/visualwebsiteoptimizer.com/app.visualwebsiteoptimizer.com.html) recently had an outrage. One of the suspecious things I found was loads of SYN flooding ...