Hello,
How to group interfaces (for using these groups in Rules)?
i.e.: put eth1 and eth2 to “Internet_interfaces” group, and put eth5 and eth6 to “Local_interfaces” group, and use groups in Firewall Filter Rules.
You can make your own firewall rule sets, e.g. input-internet, and direct the traffic on some interfaces
to the same rule set by using several rules that each match one interface and “jump” to the rule set.