Connecting to linux-server with Remmina RDP gives error: Unable to establish a connection RDP server <server>

I have been trying to connect remotely to the server of my department using Remmina (my OS is Linux). I am able to connect to it via the terminal using SSH (ssh user@ip_adress). As the work I am supposed to do is relatively complex for me, I am trying to connect to the server with a more user-friendly interface (as if I am working on my own laptop). I have been working on other servers via Remmina (but only with SSH) for similar purposes, but this is the first time I am trying to set up an RDP-connection. Using SSH on the terminal, I would first connect to the university using Cisco, and then connect via "ssh username@ipadress". In Remmina, I am entering: protocol: RDP - Remote Desktop Protocol server: ipadress user name: username user password: mypassword I end up with the error: > Unable to establish a connection to RDP server -ipadress- I have browsed online for some time, but couldn't find anything related to my issue: - I tried to set the "Security" settings to "RDP" (I also tried with TLS, and others). - Keeping the "Enable SSH tunnel" unselected has not helped. I want to mention that I don't have sudo priviliges on the server. I was hoping that someone could help me with the following: 1. Do I need to prepare/setup anything on the server before connection from my laptop? 2. Is the way I entered the information into Remmina okay? 3. What would be a good way to proceed from here on? I started trying to connect with Remmina, but is there maybe a better option?