Cloudron Forum

An important first line of defense here is to prohibit SSH login via password, but using keys instead. You can read up on how to do this for your Cloudron instance at https://cloudron.io/documentation/security/#securing-ssh-access
This page also contains further information about how to harden your setup, so it might be worth it to read the whole document.

@staypath Continuing my conversation with myself 🙂

Posting this here in case anyone else comes across this with the same question: I found that configuring fail2ban to use systemd was the trick:

[sshd] port = ssh #logpath = %(sshd_log)s #backend = %(sshd_backend)s backend = systemd enabled = true maxretry = 1 bantime = 14d

@girish The update for Cloudron was installed now, then the location in the Nextcloud app was saved again. Now it is error-free. Thanks for your personal support!

@dieter if you add an ssh key whilst buying the Hetzner server then they don't even create a root pw