详谈--TCP三次握手四次挥手(转载)

图片：

tcp三次握手

tcp四次挥手

文档见附件:tcp_ip.rar(1.48 MB)

参考文档：

http://wenku.baidu.com/view/5d57cc63caaedd3383c4d3d6.html

http://wenku.baidu.com/view/01fdda83e53a580216fcfee6.html

http://wenku.baidu.com/view/cb80a84469eae009581bec95.html

http://baike.baidu.com/view/7649.htm

内核tcp/ip参数调整：

http://www.iteye.com/topic/624598

http://niyunjiu.iteye.com/blog/731404

Linux内核 tcp/ip 调优：

net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 5000 65000
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_max_syn_backlog = 2048
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2