Bug#1037437: From fresh bookworm install default sshd jail in fail2ban won’t work

[José Miguel Gonçalves]

Hi,

As Debian opted by systemd journal as the default logging mechanism for 
bookworm, maybe a better option would be to change the default 
configuration in '/etc/fail2ban/jail.conf' to select journal as the 
logging source, i.e., instead of setting 'backend = auto', set 'backend 
= systemd'.

Best regards,
José Gonçalves