Get Tcp Connections Info

Get-TcpConnectionsInfo.ps1

param(
    [switch]$ExportToCsv,
    [string]$CsvPath = "C:\ports_info.csv"
)

function Get-TcpConnections {
    try {
        $connections = Get-NetTCPConnection
        $processes = Get-Process

        $result = foreach ($connection in $connections) {
            $process = $processes | Where-Object { $_.Id -eq $connection.OwningProcess }
            [PSCustomObject]@{
                LocalAddress  = $connection.LocalAddress
                LocalPort     = $connection.LocalPort
                RemoteAddress = $connection.RemoteAddress
                RemotePort    = $connection.RemotePort
                State         = $connection.State
                ProcessId     = $connection.OwningProcess
                ProcessName   = if ($process) { $process.Name } else { "Unknown" }
            }
        }
    } catch {
        Write-Error "Failed to retrieve TCP connections. Error: $_"
        return $null
    }

    return $result
}

$tcpConnections = Get-TcpConnections

if ($tcpConnections) {
    if ($ExportToCsv) {
        if (-not [string]::IsNullOrWhiteSpace($CsvPath)) {
            try {
                $tcpConnections | Export-Csv -Path $CsvPath -NoTypeInformation
                Write-Host "TCP connections information exported to CSV file at $CsvPath"
            } catch {
                Write-Error "Failed to export TCP connections to CSV. Error: $_"
            }
        } else {
            Write-Error "CSV path is empty or null. Provide a valid path for the CSV file."
        }
    } else {
        $tcpConnections | Format-Table -AutoSize
    }
} else {
    Write-Host "No TCP connections information to display or export."
}