​Check Network Connections (netstat)

You can install and run netstat in Windows Server 2012 and later. The netstat command can be used to display active TCP/UDP connections, listening ports, Ethernet statistics, and IP routing tables.

You can find more details about netstat in this article: netstat

The following example PowerShell commands can be used to help diagnose network issues:

• ​​List active TCP connections and all TCP and UDP listening ports: netstat.exe -a
• ​​List active TCP connections and TCP (only) listening ports, and include the application PID: netstat.exe -a -p tcp -o
• ​​Display the IP routing table: netstat.exe -r
• ​​Display Ethernet statistics for bytes sent/received, packets, discards, and errors: netstat.exe -e