Created attachment 619018 [details]
error messages

fail2ban is in the repos. Easy as baking a cake. Zypper in..  No. Refuse to
start after install. Had a look with yast(not yast2)/software and I was
recommended 2 additional packages (firewall2 integration). But no.

See attached file(fail2ban) over errors.

The solution is to adjust the package writing the etc/fail2ban/jail.local in
the 4th row. Before:
#  test
[DEFAULT]
# a space delimited list of IP addresses, CIDR prefixes, or DNS
hostnames
# to bypass fail2ban protection
....

Should be:
#  test
[DEFAULT]
# a space delimited list of IP addresses, CIDR prefixes, or DNS
#hostnames
# to bypass fail2ban protection
....

regards