Freebox Integration

Hi, I try to connect to my Freebox (Revolution). Why we need to create an “extern” access to integrate the box ?(need to open “accès a distance securise”…) The Home Assistant is IN my local network of the box and I don’t have extern access… (and I don’t want to give extern access…) Why is not possible to integrate directly (ex ; from home-assistant 192.168.1.20 to the box 192.168.1.1 ?)
Many thanks for your help.
Albert