We have a bunch of Windows 2008R2 servers used as RDP servers that are (or at least should be) essentially identical in configuration (and are arranged in a RDP farm). When administrating from home, I use remmina on Ubuntu. For unknown reason, there is one server among these that I cannot connect to from home unless I use different client-side settings. So apparently there are server-side differences, but I'm unable to find them and would like to ask what I could be missing.
Specifically, I can connect to all servers (but one) with the following remmina settings (under advanced):
- Quality: low (fast)
- Sound: Off
- Security: Negotiate
- connect to console: checked
For the problematic host, I need to adjust the client-side setting to either TLS or RDP. I cannot use NLA or Negotiate.
Here are the server-side settings that I consider relevant (Properties of the connection, "general" tab) and are identical between "good" servers and the "bad" one:
- Security: Negotiate
- Encryption: Client compatible
- Accept connections only from computers with Network level Authentication: NOT(!) checked
- Certificate: (issued by our internal CA)
Who can explain the difference?
From the start menu, pick administrative tools, remote desktop services and then remote desktop session host configuration.
In that window there's a Connections panel with all of your network interfaces listed. Double click on the connection that you're accessing and check the settings on the general tab.
Confirm this is the same as you expect and the same as your other servers.