With IPHost Network Monitor you can run WMI Number Of Active Connections monitoring of various devices in your network.
To create a WMI monitor for Number Of Active Connections, provide host name (it must be a Windows host) and specify custom WQL query:
The number of connections currently in-use
Counters for System.Data.OracleClient
IPHost Network Monitor is an advanced and easy tool for monitoring LAN and WAN networks, network servers, workstations and TCP/IP devices. Use IPHost Network Monitor to monitor your servers, domains, computers and devices.