目录
rate
increase
https://www.cnblogs.com/xiaolincoding/p/12995358.html?spm=a2c65.11461447.0.0.556649dfrnaZcc
https://wpbolt.com/syn-cookies-ate-my-dog-breaking-tcp-on-linux/
http://www.jauu.net/2010/06/24/tcp-window-scaling-and-syn-cookies/
Improving syncookies
kernel: Possible SYN flooding on port #. Sending cookies.