Automatischer Login per Telnet

function Invoke-Telnet{
param(
    [parameter(mandatory=$true)][string]$hostname,
    [int]$port = 23,
    [parameter(mandatory=$true)][string]$username,
    [parameter(mandatory=$true)][string]$password,
    [string[]]$commands,
    [int]$waittime = 1000
)
    $tcpclient = new-object System.Net.Sockets.TcpClient($hostname,$port)
    if ($tcpClient.Connected){
        write-host "Connected to $hostname" -ForegroundColor Green  
        $stream = $tcpclient.GetStream()
        $writer = new-Object System.IO.StreamWriter($stream)
        $buffer = new-Object Byte 1024
        $encoding = new-Object System.Text.ASCIIEncoding
        
        # Login
        write-host "Login..." -ForegroundColor Green  
        sleep -Milliseconds $waittime
        $writer.WriteLine($username)
        $writer.Flush()
        sleep -Milliseconds $waittime
        $writer.WriteLine($password)
        $writer.Flush()
        sleep -Milliseconds $waittime
        
        # invoke remote commands
        $commands | %{
            write-host "Invoking Command: $_" -ForegroundColor Yellow  
            $writer.WriteLine($_)
            $writer.Flush()
            sleep -Milliseconds $waittime
        }
        $output = ""  
        while ($stream.DataAvailable){
            [int32]$bytes = $stream.Read($buffer,0,$buffer.length)
            $output += $encoding.GetString($buffer,0,$bytes)
        }
        # release resources
        $writer.Close();$writer.Dispose()
        # return output
        write-host "Response:`n" -ForegroundColor Black -BackgroundColor Yellow  
        return $output
    }else{
        write-host "Could not connect to $hostname on Port $port" -ForegroundColor Red  
    }
    $tcpclient.Close()
    $tcpclient.Dispose()
}

Invoke-Telnet -hostname '169.254.102.184' -username 'bssaudio' -password 'GEHEIM' -commands 'reboot'