Stopping remote Dude server

This seems so obvious that I must be missing something, tho’ I can’t find the answer on this board or in the Wiki.

How do I stop a remote Dude server?

I had it installed on a remote PC with RouterOS and would occasionally point a local client at it to see what was going on. I was also noticing periods of quite high activity on my wireless network between two routers with no obvious sources or destinations. A sniff of the packets revealed it to be icmp pinging of a network nothing like anything I have.

I guess it to be the Dude server doing something obscure, but can’t find any way short of uninstalling the whole package to stop it running on the server.