certificate error when initiating a RDP session using Remmina

Shortly after running the latest version of Remmina a new message “certificate changed” popped up.

remmina remote desktop protocol rdp certificate details

As I connect to different VMs with the same IP address (e.g. with client A I connect to host “KA” and client B I connect to host “KB” using the same IP address this message totally makes sense as each VM has a unique certificate. But when I click on “OK” to accept the new certificate I get an error message.

remmina remote desktop protocol rdp certificate details

Several posts on the web say that files in the folder ~/.freerdp/certs should be removed .. but this folder does not exist on my machine.

Others say they changed the RDP security from Negotiate to RDP .. but this also did not work for me.

Finally a blog post got me on the right track – there the programme xfreerdp was run via command line with the parameter /cert-ignore – this very parameter Ignore certificate can be configured right in Remmina .

remmina remote desktop protocol rdp certificate details

using Remote Desktop Gateway with Remmina

Previously I was starting a Windows VM to do nothing else but connect to other Windows machines or VMs using Remote Desktop Gateways. Several weeks ago I was asked why I don’t use Remmina as it uses FreeRDP and this has the feature implemented. With a quick search I found an answer (from 2014) that I would have to compile FreeRDP myself. It was also mentioned that there was a feature request on the Remmina GitHub repo which one should upvote. There I found the information that it was already implemented …

So I double-checked if I was running the current version of Remmina. The Linux Mint Update Manager also did not show any updates.

Remmina was installed in version 1.1.2 – support for Remote Desktop Gateway was added in version 1.2.0 (which is currently available as PreRelease).

The wiki mentions that there is an official PPA for Remmina 1.2 which one can add and install the latest PreRelease with the following commands:

sudo apt-add-repository ppa:remmina-ppa-team/remmina-next
sudo apt-get update
sudo apt-get install remmina remmina-plugin-rdp remmina-plugin-gnome libfreerdp-plugins-standard

After updating Remmina with the latest PreRelease I can now successfully connect using RDG without firing up a VM every time.

remmina rdg remote desktop gateway settings

Remmina Remote Desktop Manager Vnc Rdp

after trying grdesktop, vino and vinagre .. which all worked but you had to use one program for each protocol .. i was looking for something similar to http://remotedesktopmanager.com

finding this blog entry http://blog.computer-tipps.info/2010/12/07/remmina-fernwartung-aus-einer-hand/ showed me that there is a programme to do just what i wanted …

installing remmina as usual

sudo aptitude install remmina

and if you are missing the symbol in the systray you can install the following package …

sudo aptitude install remmina-gnome

to add it to the taskbar right-click on the taskbar, choose “Add to Panel…” and select “Remmina Remote Desktop Client Applet”