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New Content #14317
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Add docs for Ethernet Filtering (Plus Only)
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Description
Ethernet/L2 filtering was added to Plus in #14308 and needs documentation.
A few notable items:
- Plus only feature
- Off by default, enabled via checkbox option on System > Advanced, Firewall & NAT tab
- Rules are managed on a single dedicated tab at Firewall > Rules, Ethernet tab that only appears when the option is enabled
- Only effective on interfaces that support L2 (e.g. they have a MAC address and operate at L2 with ARP and so on), would have no effect on interfaces that do not carry L2 info in packets.
- Passes by default
- Does not keep state, so recommend adding rules in pairs (one for each of in/out direction)
- Plugin hook is available for packages to add Ethernet rules.
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