Hello Martins,
you could always try, I believe you need a hostname at least, even if it's a local one.
Give your host a name, then add an entry for it, in the hosts file - then save.
/etc/hosts
Your host can now be accessed by name, on the same machine.
The rest will be up to the KeyHelp installer, which I believe will do checks on the hostname - at this point the process could fail...
Good luck!