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powershell script to test the response of a computer to a specific TCP port (After Windows 8.1 use Test-NetConnection)
<#
.SYNOPSIS
Test the response of a computer to a specific TCP port
.DESCRIPTION
Test the response of a computer to a specific TCP port
.PARAMETER ComputerName
Name of the computer to test the response for
.PARAMETER Port
TCP Port number(s) to test
.INPUTS
System.String.
System.Int.
.OUTPUTS
None
.EXAMPLE
PS C:\> Test-TCPPortConnection -ComputerName Server01
.EXAMPLE
PS C:\> Get-Content Servers.txt | Test-TCPPortConnection -Port 22,443
#>
[CmdletBinding()][OutputType('System.Management.Automation.PSObject')]
param(
[Parameter(Position=0,Mandatory=$true,HelpMessage="Name of the computer to test",
ValueFromPipeline=$True,ValueFromPipelineByPropertyName=$true)]
[Alias('CN','__SERVER','IPAddress','Server')]
[String[]]$ComputerName,
[Parameter(Position=1)]
[ValidateRange(1,65535)]
[Int[]]$Port = 3389
)
begin {
$TCPObject = @()
}
process
{
foreach ($Computer in $ComputerName)
{
foreach ($TCPPort in $Port)
{
$Connection = New-Object Net.Sockets.TcpClient
try
{
$time = Measure-Command -Expression {
$Connection.Connect($Computer, $TCPPort)
$stream = $Connection.Close()
$Response = "OK: Opened"
}
if ($Connection.Connected) {
$Connection.Close()
$Response = "OK: Opened and Closed"
}
}
catch [System.Management.Automation.MethodInvocationException]
{
$Response = "Error: "+$_.Exception.Message
}
$Connection = $null
$hash = @{
ComputerName = $Computer
Port = $TCPPort
Response = $Response
Duration = $time
DurationMs = $time.Milliseconds
}
$Object = New-Object PSObject -Property $hash
$TCPObject += $Object
}
}
}
end {
Write-Output $TCPObject
}
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