reNixos/s0meMiniPC-nix/networking/firewall.nix

{...}: {
    networking = {
        firewall = {
            allowPing = true;
            enable = true;
            checkReversePath = false;
            allowedUDPPorts = [
                80
                8080
                8443
                53350
                53351
                53353
            ];

            allowedTCPPorts = [
                80
                8080
                8443
                53350
                53351
                53353
            ];
        };
    };
}