Port Scanning with Powershell

It's been a few weeks since my last post so I've decided to try out some more Powershell scripting. Here is a script to do some port scanning from a Windows system with Powershell. Right now it only allows for IP Addresses to be used.

###############################################################################################
#
# Script: PSPortScanner.ps1
# By: Tim Muniz
# Date: 20160120
#
###############################################################################################
<#

.SYNOPSIS

This script scans a remote host to check what ports are open.


.DESCRIPTION

This script scans a remote host to check what ports are open.


.PARAMETER Target

Remote host to scan


.PARAMETER SPort

Port to start scan with.

.PARAMETER EPort

Port to end scan with.


.EXAMPLE

Scan remote host to check what ports are open.

PSPortScanner.ps1  1  1024 10.1.1.2


.NOTES

Please let me know what you think or if it isn't working.

#>
[CmdletBinding()]
Param(
 
    [Parameter(Mandatory=$True,Position=1)]
    [int] $SPort,
    [Parameter(Mandatory=$True,Position=2)]
    [int] $EPort,
    [Parameter(Mandatory=$True,Position=3)]
    [System.Net.IPAddress] $TargetIP,

    [Switch] $ShowClosed = $false

)

$range = $SPort..$EPort

foreach ($port in $range){
    $TCPConn = New-Object System.Net.Sockets.TcpClient;
    Try
    {
        $TCPConn.Connect($TargetIP, $port);
        Write-Host "Port $port is OPEN";
    }
    Catch [System.Net.Sockets.SocketException]
    {
        Write-Host "Port $port is CLOSED";
    }
    Finally
    {
        $TCPConn.Dispose();
    }
 }