Get-ListeningPort.ps1
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<#
.Synopsis Enumerate local listening ports. .DESCRIPTION Enumerate all of the local listening ports on a computer (IPv4 only). Requires command Get-NetTCPConnection. .PARAMETER Ports The Ports parameter is defaulted to a list of popular server ports. .EXAMPLE Get-ListeningPort LocalAddress LocalPort RemoteAddress RemotePort State AppliedSetting OwningProcess ------------ --------- ------------- ---------- ----- -------------- ------------- 0.0.0.0 3389 0.0.0.0 0 Listen 1116 .EXAMPLE Get-ListeningPort -Ports 80,443 .NOTES Created by: Jason Wasser Modified: 1/23/2020 #> function Get-ListeningPort { param ( $Ports = @(22,25,443,465,587,636,993,995,3389) ) $IPv4Regex = '\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b' $ListeningPorts = Get-NetTCPConnection -State Listen | Where-Object -FilterScript {$_.LocalAddress -match $IPv4Regex} foreach ($Port in $ListeningPorts) { if ($Ports -contains $Port.LocalPort) { Write-Output $Port } } } |