Failed: Remmina > Profile > Advanced > Security > Negotiate

[Lonnie Lee Best]

I'm running Remmina 0.9.99.1 The GTK+ Remote Desktop Client.

Typically, I'm able to connect to Windows servers if security is set to the default "Negotiate":

Remmina > Profile > Advanced > Security > Negotiate

However, I'm currently onsite at a company, and I'm unable to connect to their new server that's running Windows Server 2008 R2 Enterprise if I have security set to "Negotiate".

I eventually discovered that I can indeed connect if I set security to RDP:

Remmina > Profile > Advanced > Security > RDP

So I'm reporting this to suggest further testing with the "Negotiate" security feature with Window Server 2008 R2 Enterpise. In my case, it was unable to negotiate to discover that it could indeed connect over RDP. Instead, I had to discover this for myself and set the security manually to RDP.

[Lonnie Lee Best (launchpad-startport)]

I primarily use Remmia for remoting into Windows workstations and servers because I like its GUI for managing the numerous connection settings to all these various Windows machines.

However, sometimes Remmina won't connect to some servers or workstations. Oddly, when this occurs, I can successfully connect to the same machine (that Remmina can't connect to) using rdesktop:
sudo apt-get install rdesktop

With a command like this:
rdesktop 192.168.1.1 -a 16 -g 1370x850 -u UserName -d domain.local '-rdisk 'home'=/home/user/Share'

Why is rdesktop able to connect to some machines that Remmina can't?

Answer: [Remmina > Profile > Advanced > Security > Negotiate ] fails to negotiate the correct security (RDP).

[Lonnie Lee Best (launchpad-startport)]

This issue occurs with other versions of windows too:
http://askubuntu.com/questions/154121/why-wont-remmina-connect-to-windows-7-remote-desktop

[Lonnie Lee Best (launchpad-startport)]

I understand that is it the freerdp package (that Reminna relays on) that is responsible for these failure in negotiation:
https://github.com/FreeRDP/Remmina/issues/54

[Lonnie Lee Best (launchpad-startport)]

I'm not sure how to locate this upstream. I did submit this:

https://github.com/FreeRDP/FreeRDP/issues/1484

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.