If you’re not using the USB cellular (or inbuilt cellular on an MX67C or MX68CW), then you can contact support and request that they make the Cellular firewall rules apply to WAN2. Then you can put in additional rules for when WAN2 is active.
If you’re not using the USB cellular (or inbuilt cellular on an MX67C or MX68CW), then you can contact support and request that they make the Cellular firewall rules apply to WAN2. Then you can put in additional rules for when WAN2 is active.