Orange Funbox 3.0 + Asus DSL-N55U Router: Transition from Neostrada 20Mb to Fiber Optic 100Mb

Hello.
I have been very pleased with the Asus DSL-N55U router for over 4 years. Asus RP-AC55 helps me cover the WiFi of a large, multi-story house. Because I am changing the service neostrada Orange 20Mb to Orange Fiber Optic 100Mb, in the current configuration the router will become useless for me. First of all, that Orange gives a router with 4xLAN and WiFi and secondly that my Asus router does not have WAN input.
I wouldn't write this post if it wasn't for "BUT"
Because Orange provides the service with a router that has a built-in optical terminal (optical fiber is connected directly to FunBox), I will not be able to use only my own router. Because I really care about remote management of my network over VPN, as well as the configuration options that Asus perfectly enables me, that's why, of course, the easiest way would be to sell the current router and replace it with RT-AC68U and connect it to Funbox.
That's why I have this plan:
In Funbox (with the address 192.168.1.1) I will turn off WiFi and connect only the Orange TV decoder after LAN to it. DHCP will be enabled and set to pool 192.168.1.100-199). For a second LAN with fixed internal address 192.168.1.2 I would connect an Asus router (DHCP disabled). On it I would implement the remaining traffic and all LAN and WiFi management.
And in theory it should work. But how to connect to Asus after VPN when it will not be the first but the second after Funbox? How to make Funbox "transparent" and Asus visible on the network with assigned dynamic public IP (which will get Funbox). This is necessary for the Asus server (on which I have a VPN domain) to see the router in the network so that I can connect to it via VPN regardless of the assigned dynamic IP. I know that Funbox management can also be carried out with the help of one of 4 free services (e.g. no-ip), but that's not all I mean. Being abroad, I can easily connect with my Asus and then continue to make connections within the "Polish" network by accessing websites such as sport.tvp or using the Orange TV Go service (which is only available in our country).

I have one more question - are you sure I need to sell the current Asus DSL-N55U router?
Is there any possibility to change 1 of the 4 LAN ports to WAN port so that I can continue to enjoy the great features of the router and above all the possibilities of managing it over a VPN?

Regards

Tell them to give yourself Funbox 2.0 + ONT. Then you crash Funbox and you have your router. I don't know about TV. The router must have options to set VLAN to WAN. Alternatively, connect Asus to LAN-WAN Funbox, Asus dynamic WAN address, in Funbox you do DMZ on Asus IP WAN and turn off WiFi in it. And Asus will be available from outside. Look in Asus if there is an option to change one of the LAN ports in WAN.

ONT separately with the older model Funbox 2.0 Orange no longer gives. I learned that such a direct connection to the ONT of another router guarantees problems with starting the TV and VOIP.

Asus Technical Support informed me that if I want to further manage the Asus router over VPN, then:
"this requires a public address on the WAN port. It is worth contacting Orange technical support asking if it is possible to obtain a public address on the WAN port on the router connected to the Funbox - this functionality is called Half Bridge".

So the option of leaving DSL-N55U with management over VPN is definitely a foregone conclusion. I need to buy another router with a WAN port.
I suspect that I can dream of the Bridge option on Funbox, so what he wrote will remain @makosuu , regarding WAN connection (new) Asus to LAN Funbox and setting DMZ to Asus WAN IP.
I hope this really allows you to manage it over a VPN and it will be visible on the network with a dynamic public address.

And if I sell my current Asus for miserable money, it's better if I use it only as an Access Point, further strengthening the range of the Internet at home, connecting it to Funbox LAN -> LAN, disabling the DHCP server in Asus.

In Funbox, there will never be a bridge mode. The only option is DMZ on Asus. Asus will not have a public address but will be accessible from the internet.

But how do I get to Asus, since he will not present himself in the public IP network?
How will my domain at asuscomm.com know how to connect to it?

If you do DMZ, all Funbox ports will be redirected to Asus.

marti_5 wrote:

ONT separately with the older model Funbox 2.0 Orange no longer gives

They give. No further than in May I got such a set.