Hi, been searching for a while and I have found some other people with these same problems but no fix yet:
First problem I have is that the disable feature has no documentation, so when I try to use it this is what I get:
# sh install.sh --disable fail2ban
Unknown feature fail2ban: exiting
Couldn't find a working list of features to be disabled either so this doesn't seem to solve the problem with fail2ban nor Firewalld, which is why I'm posting.
Fresh install and it looks like there's a bug with Debian installation and Firewalld, probably because this package seems to be from fedora repos (If so this install script shouldn't say the distro is supported)
Found this useful: https://www.virtualmin.com/node/64425
No solution (since 2017) and it seems there's no one paying attention to this.
This could be easily fixed by disabling the plugin at the installation but again, disable is not working or I'm doing it wrong, so the only option left is to manually edit the script.
Are you not even concerned that the installation is failing on one of the most used distros?
Also firewalld is useless.