PowerShell/Docs/scan-ports.md

scan-ports.ps1

This PowerShell script scans the network for open or closed ports.

Parameters

PS> ./scan-ports.ps1 [<CommonParameters>]

[<CommonParameters>]
    This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, 
    WarningVariable, OutBuffer, PipelineVariable, and OutVariable.

Example

PS> ./scan-ports

Notes

Author: Markus Fleschutz | License: CC0

Related Links

https://github.com/fleschutz/PowerShell

Script Content

<#
.SYNOPSIS
	Scans the network for open/closed ports
.DESCRIPTION
	This PowerShell script scans the network for open or closed ports.
.EXAMPLE
	PS> ./scan-ports
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

$network = "192.168.178"
$port = 8080
$range = 1..254
$ErrorActionPreference= "silentlycontinue"

foreach($add in $range) {
	$ip = "{0}.{1}" -F $network,$add
	write-progress "Scanning IP $ip" -PercentComplete (($add/$range.Count)*100)
	if (Test-Connection -BufferSize 32 -Count 1 -quiet -ComputerName $ip) {
		$socket = new-object System.Net.Sockets.TcpClient($ip, $port)
		if ($socket.Connected) {
			write-output "TCP port $port at $ip is open"
			$socket.Close()
		} else {
			write-output "TCP port $port at $ip is not open"
		}
	}
}
exit 0 # success

(generated by convert-ps2md.ps1 using the comment-based help of scan-ports.ps1 as of 08/06/2023 21:36:16)