What your posts indicate is that you may not understand that there are multiple applications in the world use port 2222.
The site you're looking at (
http://www.speedguide.net/port.php?port=2222) is showing you a list of all of the applications they know of that use that port.
It's up to
you to figure out if any of those apps actually apply in
your situation.
Regarding Rockwell CSP2, I know the description on that site mentions TROJANS and BackDoors (two terms that really seem to have your attention), but if you further research the description, none of it seems to apply to your situation. The 3rd paragraph talks about one variant being an .EXE. Macs don't run EXEs, Windows computers do. Doing a Google for "rockwell CSP2 Mac OS X" turns up zero information about this affecting Macs.
So scratch that off the list and go to the next one. DirectAdmin. Quick Google seems to indicate that this isn't applicable to Macs, not that it was a bad thing. Apparently this application (on Linux) runs on port 2222 for admin functions. Not applicable to your situation.
The third entry for port 2222 shows this:
Microsoft Office OS X antipiracy network monitor (unofficial)
Doing a Google search about that turns up information about how Microsoft, in an effort to prevent people from installing one licensed copy of Microsoft Office on multiple computers in their house/office, has the Office programs broadcast out (across the local network) the license key, and takes some sort of action (shuts an app down?) if it seems multiple apps on different computers using a product key that's for individual use.
Hmmm, this seems to directly apply to your situation.