Ok I see this, I should have paid attention …
[INFO] Firewalld could not be installed because it conflicts with the
[INFO] installed ‘cloud-init’ package on this OS. Fail2ban requires a
[INFO] working firewall and has been disabled.
Is there something to do to fix this during install ? I guess not using cloud-init is not an option (I’m not familiar with it but I understand it might be used to deploy VM’s) ? Or may I install firewalld afterwards ?
Ok I found the answer …: Firewalld and cloud-init conflict on Debian 13 I’ll stick with D12 for the time being.