I am using Xubuntu as a dumb terminal for some Windows machines and I have a question about ctrl-alt-del passthrough. On Linux, all the other remote control packages I have seen, I am able to unmap ctrl-alt-del from the display manager/desktop environment and the remote control would no longer capture ctrl-alt-del locally and would pass the actual real keystrokes through to the machine being remotely controlled.
Is this possible with NoMachine? I am aware of the option to send keystrokes, but this is a training nightmare for non-tech savvy users. Especially when they see the Windows sign in screen asking them to press ctrl-alt-del.