Hello everybody,
I have the following setup:
A: Debian 11 (bullseye) – fail2ban 0.11.2-2 – Exim & nftables
B: Ubuntu 20.04.3 LTS – fail2ban 0.11.1-1 – Dovecot & nftables
IPv6 rules are created for Dovecot on the Ubuntu system:
table inet f2b-table {
set addr6-set-dovecot {
type ipv6_addr
elements = { xx:yy:zz }
}
set addr-set-dovecot {
type ipv4_addr
elements = { x.y.z.x }
}
IPv6 rules are not created for Exim on the Debian system:
table inet f2b-table {
set addr-set-exim {
type ipv4_addr
}
The configs are identical and only the filter rules (exim vs. dovecot)
are different. I have no idea why the IPv6 rule is not created for Exim
on the Debian system. Any clues or hints?
Regards,
Kai
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