Don't tell anyone, but back in the days, before NAT routers took over completely, it happened that I found remote Amiga systems of users on IRC that had netfs running and would allow sinister people like me to mount their RAM:, so I could mess with their ENV:sys/palette.prefs etc and see them complain on IRC about how their Amiga was behaving strangely. Good old times 
Yeah, I didn't do any harm to anyone, but sometimes if someone asked for some file, I dumped it to their RAM: disk, and told to check there

Had to explain two times after that.
But this new version is password protected, and permissions are given in other way, so it's more safe now, and not open by default

And of course most people are behind NAT too.
How do i find the files for Envoy?
Find lots of related stuff on aminet. patches and such...
but seemingly i cant find the actual files.....
It's a commercial product... I don't remember if it's been given away for free at any point, maybe still under copyrights. And it has some problems with NG systems.