what is the policy regarding software that requires modifications to the
firewall in order to run?
Specifically, I'm packaging sshguard (a brute-force blocking software
similar to fail2ban, I've asked about it here before ), which
maintains a list of blocked ips/subnets in ipsets. When using firewalld
and nftables, these ipsets are created automatically when the program
first runs, but for iptables the user has to set them up beforehand.
- should the (iptables sub-)package set these up during first install
instead? If not, should the user be notified of the required steps in
e.g. a scriptlet?
- for all backends, should the ipsets be removed when the package is
I think similar arguments as for user creation/deletions apply, so would
go for create-automatically-and-never-delete, but maybe there already is
an existing policy on this? I had a look at the fail2ban spec, but
fail2ban seems to take care of firewall configuration entirely on its own.