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My employer switched from VPN and RDP to using what our admin calls "RDP over HTTPS". Since that switch I find myself unable to connect to the "new" RDP server.

I think the progress is as follows:

  • A RDP gateway-server is connected via TLS
  • the requested sever (different from the gateway-server) is then connected through the TLS connection.

In Windows mstsc-settings the server name is the "internal network name" of the machine I wish to connect to. And on the last tab (in German it is called "leistung" - could be "activity"), I go to the "connection from everywhere" settings and set the gateway-server under "gateway-server".

Now: Is there any way to use this scenario under Linux (apart from a virtual machine running Windows)?

I am interested in

  • free ideas (e.g. is it possible to create a TLS tunnel and connect through that using freerdp/rdesktop?)
  • non-free ideas. As long as they work I'll worry about the costs later.
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I hope they implemented the client auth part of it and not just the server part... – Ignacio Vazquez-Abrams Oct 10 '10 at 14:13
I am not familiar with neither rdp, nor the the "windows-stuff", where is the difference between "client auth" and "server part"? (well, I do know the difference between client and server...) – Nils Oct 10 '10 at 17:44
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3 Answers

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Proxy the RDP connection over an SSH connection to a machine on the border.

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You mean exposing a ssh-server to the internet so I could use that one as a "proxy"? – Nils Oct 10 '10 at 17:42
That is correct. – Ignacio Vazquez-Abrams Oct 10 '10 at 17:44
good solution, however not feasible for me as my employer would not allow it. – Nils Oct 10 '10 at 19:16
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up vote 0 down vote

freerdp is supposed to work in the TLS connection mode if you compile it with openSSL support.

FreeRDP is a fork of the rdesktop project that intends to rapidly start moving forward and implement features that rdesktop lacks the most.

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up vote 0 down vote accepted

There is one (!) software that can do this:
http://itap-mobile.com/desktop/rdp/ brings iTap - an rdp connection software that comes for 20 € plus tax. It is not open source but it is a solution to my "problem"... They have a test-version, too.

iTap seems to run under GNU/Linux and Mac.
I have tried it with my employers setup and it works flawlessly.

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iTap do not work! (Taken from site link): Important release information: iTap mobile RDP does not yet fully support all available virtual channels and redirections available with Microsoft's own clients (it does support features Microsoft does not support on Mac or Linux though, e.g. TS Gateway). Please see the following list of currently unsupported features, we are working hard to include each and every of those features in future versions. – warkum Feb 10 at 10:35
@warkum: iTap does work, I am using it daily now. The quote you gave is regarding iTap mobile RDP, whereas I wrote about iTap desktop RDP. – Nils Feb 12 at 10:53
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