net.core.hot_list_length = 256

　　# Increase the tcp-time-wait buckets pool size

　　net.ipv4.tcp_max_tw_buckets = 360000

　　# This will increase the amount of memory available for socket input/output queues

　　net.core.rmem_default = 65535

　　net.core.rmem_max = 8388608

　　net.ipv4.tcp_rmem = 4096 87380 8388608

　　net.core.wmem_default = 65535

　　net.core.wmem_max = 8388608

　　net.ipv4.tcp_wmem = 4096 65535 8388608

　　net.ipv4.tcp_mem = 8388608 8388608 8388608

　　net.core.optmem_max = 40960

　　如果希望屏蔽别人 ping 你的主机，则加入以下代码：

　　# Disable ping requests