Sorry for the delay – I expected email notification of updates to thread.
I have the freebie version so I’m connecting to the physical display.
On the desktop of the 4.1 server I’m running Gnome on RHEL 6.5.
I use System/Preferences/Keyboard/Layouts/Layout Options/Contorl Key Position/Swap Ctrl and Caps Lock.
Done on both server and client (my laptop at home running Ubuntu 12.4/Gnome.
Remember: the “Caps Lock” key does function as Ctrl, but on each press it toggles caps lock. Really annoying.