How to configure new interfaces?

Hello!!
I am waiting to receive a mini PC with four 2.5-gigabit ports, which will replace the one I currently have with two 1-gigabit ports.

I use the mini PC to virtualize a Sophos firewall. Currently, I have the first port configured as a Linux Bridge (vmbr1) + Network Device (enp3s0) for the WAN, and the second port as a Linux Bridge (vmbr0) + Network Device (enp2s0) for the LAN with IP 192.168.3.7/24.

On the new mini PC, I want to reserve one of the ports for the WAN and the other...

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