Windows: List applications binding a TCP Port

27.12.2022 00:00 Windows Networking PowerShell

Have you ever needed to know what executable is binding to a specific port on windows?

Here is how, with a little bit of PowerShell:

 1# buffer result in this list
 2$list = @();
 3
 4# loop over all LISTEN ports
 5foreach ($listener in Get-NetTCPConnection -State Listen | Sort-Object LocalPort) {
 6
 7    # get the owning process
 8    $proc = Get-Process -Id (Get-NetTCPConnection -LocalPort $listener.LocalPort).OwningProcess
 9
10    $ref = @{
11        'Port' = $listener.LocalPort
12        'Id' = $proc.Id
13        'ProcessName' = $proc.ProcessName
14        'Exe' = $proc.path # path to executable
15        'Type' = $proc.GetType()
16    }
17
18    # create object from hash for easier display inf Format-Table
19    $list += new-object psobject -Property $ref
20}
21
22# output
23$list | Format-Table
24