1、查看windows已经建立的连接数

netstat -n | find /C /I "established"

2、windows服务器连接数常见连接数配置参数，注册表  [HKEY_LOCAL_MACHINE \System \CurrentControlSet \Services \Tcpip \Parameters]

MaxUserPort = 65534 (Decimal)

MaxHashTableSize = 65536 (Decimal)

MaxFreeTcbs = 16000 (Decimal)