FREERDP

root@oco:~$ sudo apt-get install freerdp2-x11

root@oco:~$ which xfreerdp
root@oco:~$ xfreerdp -h
 * /v:<server>[:port] Server hostname
    - the /v specifies the target to connect to
root@oco:~$ xfreerdp /v:10.129.1.13:3389 /cert:ignore /u:Administrator
 password: {blank}
  - it is uncommon to find a blank password for rdp connections, but worth a try

 * /cert:ignore will disregard all security certificate usage
 * /u:Administrator specifies the login username