Rdesktop Internal Licensing Error

If you get the following error message when running rdesktop to connect to a Remote Desktop to a Windows server

Autoselected keyboard map en-us
disconnect: Internal licensing error.

Then try running

rm ~/.rdesktop/licence* && rdesktop <windows server name>

There is a license file that gets created when using rdesktop. At some point Microsoft changed their remote desktop authentication, so you need to remove the license file each time before starting rdesktop.

PuTTY and GSSAPI

The new version of PuTTY has a new authentication GSSAPI feature. This allows users to log in with out a password but will not mount a users home directory. We have had several users using the new version of PuTTY who could not log in to kerbNFSv4 system.

To overcome this problem you must disable GSSAPI authentication.

To do this in PuTTY go to
Connection –> SSH –> Auth –> uncheck “Attempt Kerberos 5 GSSAPI/SSPI auth (SSH-2)”
or
Connection –> SSH –> Auth –> GSSAPI –> uncheck “Allow GSSAPI Authentication (SSH-2 only)”

See the following images.

Putty_sshAuthentication

Putty-gssapi

WinSCP

WinSCP is an open source free SFTP client, SCP client, FTPS client and FTP client for Windows. Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality.

Currently, the best way to connect to your ENGR home directory from off campus is to utilize some form of SCP client. Windows users can obtain a free client called WinSCP to connect to their files.

To download WinSCP, go to: http://winscp.net/

After starting WinSCP you should see a window similar to this one:

Image:Win1.png

Type “linux-1.ece.iastate.edu” into the Host name box and enter your username and password when prompted and select “Login”. Since this is the likely the first time you have connected to this file server a warning message may pop up warning you that the security keys provided by the server are unknown. It is ok to proceed past this warning.

After login you will see a window similar to this one:

Image:Win2.png

In this image the left pane represents your local desktop system and the right pane represents the files in your home directory. You can navigate to the desired files/location in either pane and drag and drop to begin your file transfer.

 

To watch a how to video please refer to: http://www.youtube.com/watch?v=8j6VdlVlYiw

PuTTY

There are several good SSH client programs for Windows. A very simple and easy to install SSH client program for Windows is called PuTTY. PuTTY is a free and open source terminal emulator application which can act as a client for the SSH, Telnet, rlogin, and raw TCP computing protocols and as a serial console client. You can download a version here:

Download

Tip

If you are having a problem using ssh to a machine and it will not allow you to enter a password try this below:

Connection –> SSH –> Auth –> uncheck “Attempt Kerberos 5 GSSAPI/SSPI auth (SSH-2)”
or
Connection –> SSH –> Auth –> GSSAPI –> uncheck “Allow GSSAPI Authentication (SSH-2 only)”

[HTML3]

To watch a how to video please refer to: http://www.youtube.com/watch?v=jYUp0nJMZMM