Telnet using PowerShell (http://brianreiter.org/2011/06/08/cool-powershell-script-replicates-telnet/)

powershell telnet

try {
    $remoteHost = Read-Host "Enter IP / Hostname"
    $port = 23
    write-host "Connecting to $remoteHost on port $port"
    $socket = new-object System.Net.Sockets.TcpClient($remoteHost, $port) 
    if($socket -eq $null) { return; } 
 
    $stream = $socket.GetStream() 
    $writer = new-object System.IO.StreamWriter($stream) 
 
    $buffer = new-object System.Byte[] 1024 
    $encoding = new-object System.Text.AsciiEncoding 
 
    while($true) { 
       start-sleep -m 500 
 
       while($stream.DataAvailable) {  
          $read = $stream.Read($buffer, 0, 1024)    
          write-host -n ($encoding.GetString($buffer, 0, $read))  
       } 
 
       $command = read-host
       
       $writer.WriteLine($command) 
       $writer.Flush() 
    }
}
finally {
    $writer.Close() 
    $stream.Close()
}