DDOS时需要改的一些参数

echo 2 > /proc/sys/net/ipv4/synack_retries echo 3 > /proc/sys/net/ipv4/tcp_fin_timeout echo 8000 > /proc/sys/net/ipv4/tcp_max_syn_backlog echo 2 > /proc/sys/net/ipv4/tcp_syn_retries echo 2 > /proc/sys/net/ipv4/tcp_synack_retries echo 1 > /proc/sys/net/ipv4/tcp_syncookies echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse echo 1 > /proc/sys/net/ipv4/tcp_window_scaling