Windows commands for port

Windows Command

netstat -an |find /i "listening"
netstat -an |find /i "established"
netstat -ao |find /i "listening"

1. netstat -aon | findstr ""

This shows if the specified is being used. The number in the last column is the process id (PID) of the process holding the socket. Once PID is determined, one can refer to "Windows Task Manager" to determine which application corresponds to the PID.

Windows Example

C:\>netstat -aon | findstr "50000"
TCP 0.0.0.0:50000 0.0.0.0:0 LISTENING 2564

C:\>pslist 2564

pslist v1.28 - Sysinternals PsList
Copyright ¬ 2000-2004 Mark Russinovich
Sysinternals

Process information for MACHINENAME:

Name Pid Pri Thd Hnd Priv CPU Time Elapsed Time
db2syscs 2564 8 15 366 30912 0:00:02.859 2:12:08.564

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