How to check what RDP-like tools are on the server?

Question

RDP

Hello.
I'm still just getting to know the networks and a question arose.
We have a server. And there are security guards who try to cut off everything they can.
(Not the essence. This is just a context for understanding what is happening).
I want to somehow connect to the server.
Question: if I run a port scanner and compare the numbers with the list from wikipedia, can I understand if RDP / SSH / what-there-else happens on the server?
Does it make sense? Can something come of this?
Many questions may arise from security as a result of my hectic activities? :)
Or, besides RDP & SSH, nothing else exists at all and you can not fuss at all? :))

Answer 1

Question: if I run a port scanner and compare the numbers with the list from wikipedia, can I understand if RDP / SSH / what-there-else happens on the server?
No. Some protocols are not trivial.
Specifically SSH, yes you can.
So it depends on what you want.
Depends on what kind of relationship you have with them.
Depends on what position you have.
Depends on how seriously they do it all, or maybe just for show.
And so on and so forth.
There is a lot.
VNC, X11, Citrix Metaframe, naked Telnet, proprietary Ammy / Teamviewer / RAdmin, etc.
You won’t find even 10% of this with a simple port scan.