1) install plugin
2) setup redirect www
3) setup an external IP database automatically or for local just copy the GeoIP as readme says
4) tested with FoxyProxy IP adresses from various country...WORKS!
One thing: it should be defined as a Redirect IP tool as well, not just a ban IP.
Thanks for the cool rating and great comments!
I agree that we should list this under "Redirect IP tool", but somehow I could not find that category on joomla extensions.