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I'm no expert but I believe it goes something like this: If your pf rules are static then I don't see a great way to use persist but if they are dynamic (meaning you use anchors in your rules) then rules spring into and out of existence. Persist is what keeps tables alive when the rule set changed and there are no longer any rules that reference them. I ...


Any other firewall will have have the same issue as PF as they all have to keep some type of 'state' to enable packets to come back in to a device behind a NAT or other kind of inbound block that lets replies though but stops new packets.

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