но я так и не понял, что это за раздел Float
в чем специфика?
Т.н. "плавающие правила", к-ый применяются ранее правил на конкретных интерфейсах (LAN, WAN, OPT etc.)
https://doc.pfsense.org/index.php/What_are_Floating_Rules :
What are Floating Rules
Floating rules are advanced Firewall Rules which can apply in any direction to any (or multiple) interfaces. Some more advanced/low-level options are available on Floating Rules than exist for the normal per-interface rules.
Using Floating Rules you can control/restrict traffic from the firewall itself, you can have rules which apply to multiple interfaces in the same way, you can have traffic shaping rules which match traffic but do not affect it's pass/block action, and much more.
Many firewalls do not need any floating rules, or may only have them for the traffic shaper. For those choosing to use them, they can make some complex filtering scenarios easier, at the cost of being a little harder to follow logically in the GUI.
Floating rules are parsed before rules on other interfaces. Thus, if a packet matches a floating rule and the Quick option is active on that rule, pfsense will not attempt to filter that packet against any rule on any other interface.
Rules using the Queue action do not work with 'quick' checked.
