I personally did not find any app or settings which could easily do this, though this is not an app or gui, but its the simplest and easiest way at least for me.
A year or so ago i wrote how to create PEM file and login to your server with it to take advantage of disabling password based logins.
By default NextCloud has index.php in the urls, it’s not a show stopper at all but it’s good to have nice clean urls when sharing.
On Oct 12 ONLYOFFICE announced that their desktop editors are going open source and the source code is available on Github. If you are keen to checkout the repository, https://github.com/ONLYOFFICE/.
Objective: To disable password based logins and login only using key based authentication. Will create a pem file which will be used to access the server. OS used is CentOS 7 64bit.
