MSP Programs & Scripts Code

function Invoke-TCPScan {
    [CmdletBinding()]
    param (
        [string]$Subnet = "10.18.254",  # /24 base
        [int]$Port = 22,
        [int]$Timeout = 1000
    )

    Clear-Host

    $results = @()
    $total = 254
    $count = 0
    $rowIndex = 3  # Output starts at line 3

    # Reserve lines: 0 = Progress, 1 = blank, 2 = header
    Write-Host " "  # Line 0: progress (will be overwritten)
    Write-Host " "  # Line 1: spacing
    Write-Host "Scanning $Subnet.0/24 for TCP servers on port $Port..." -ForegroundColor Cyan

    function Show-Progress($percent) {
        if ($Host.Name -eq "ConsoleHost") {
            [Console]::SetCursorPosition(0, 0)
            $msg = ("Progress: {0,3}% complete" -f $percent).PadRight([console]::WindowWidth)
            Write-Host $msg -NoNewline
        } else {
            Write-Host ("Progress: {0,3}% complete" -f $percent)
        }
    }

    # Main scan loop
    1..254 | ForEach-Object {
        $ip = "$Subnet.$_"
        $count++
        $percent = [math]::Round(($count / $total) * 100)
        Show-Progress $percent

        $client = New-Object System.Net.Sockets.TcpClient
        try {
            $async = $client.BeginConnect($ip, $Port, $null, $null)
            $success = $async.AsyncWaitHandle.WaitOne($Timeout, $false)

            if ($success -and $client.Connected) {
                $client.EndConnect($async)

                if ($Host.Name -eq "ConsoleHost") {
                    [Console]::SetCursorPosition(0, $rowIndex)
                }

                Write-Host "SSH server found: $ip" -ForegroundColor Green
                $results += $ip
                $rowIndex++
            }
        } catch {
            # Silent error handling
        } finally {
            $client.Close()
        }
    }

    # Final progress update
    Show-Progress 100

    # Summary below results
    if ($Host.Name -eq "ConsoleHost") {
        [Console]::SetCursorPosition(0, $rowIndex + 1)
    }
    Write-Host "`nScan complete. Found $($results.Count) TCP server(s) on port $Port." -ForegroundColor Yellow

    if ($results.Count -gt 0) {
        $results | ForEach-Object { Write-Host $_ }
    }
}